1 # SOME DESCRIPTIVE TITLE
2 # Copyright (C) YEAR Free Software Foundation, Inc.
3 # This file is distributed under the same license as the PACKAGE package.
4 # FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
9 "Project-Id-Version: PACKAGE VERSION\n"
10 "POT-Creation-Date: 2013-07-15 16:08+0900\n"
11 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
12 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
13 "Language-Team: LANGUAGE <LL@li.org>\n"
16 "Content-Type: text/plain; charset=CHARSET\n"
17 "Content-Transfer-Encoding: 8bit\n"
20 #: build/C/man3/INFINITY.3:25
26 #: build/C/man3/INFINITY.3:25
32 #: build/C/man3/INFINITY.3:25 build/C/man3/abs.3:34 build/C/man3/acos.3:35 build/C/man3/acosh.3:35 build/C/man3/asin.3:35 build/C/man3/asinh.3:35 build/C/man3/atan.3:35 build/C/man3/atan2.3:35 build/C/man3/atanh.3:35 build/C/man3/cbrt.3:30 build/C/man3/ceil.3:27 build/C/man3/copysign.3:31 build/C/man3/cos.3:34 build/C/man3/cosh.3:36 build/C/man3/div.3:34 build/C/man3/erf.3:35 build/C/man3/erfc.3:26 build/C/man3/exp.3:36 build/C/man3/exp10.3:35 build/C/man3/exp2.3:36 build/C/man3/expm1.3:30 build/C/man3/fabs.3:32 build/C/man3/fdim.3:9 build/C/man3/fenv.3:27 build/C/man3/finite.3:25 build/C/man3/floor.3:27 build/C/man3/fma.3:12 build/C/man3/fmax.3:9 build/C/man3/fmin.3:9 build/C/man3/fmod.3:35 build/C/man3/fpclassify.3:10 build/C/man3/frexp.3:33 build/C/man3/gamma.3:9 build/C/man3/hypot.3:33 build/C/man3/ilogb.3:29 build/C/man3/infnan.3:33 build/C/man3/isgreater.3:10 build/C/man3/j0.3:36 build/C/man3/ldexp.3:34 build/C/man3/lgamma.3:11 build/C/man3/log.3:36 build/C/man3/log10.3:36 build/C/man3/log1p.3:29 build/C/man3/log2.3:36 build/C/man3/logb.3:29 build/C/man3/lrint.3:27 build/C/man3/lround.3:27 build/C/man7/math_error.7:26 build/C/man3/matherr.3:27 build/C/man3/modf.3:33 build/C/man3/nan.3:11 build/C/man3/nextafter.3:11 build/C/man3/pow.3:35 build/C/man3/pow10.3:25 build/C/man3/remainder.3:37 build/C/man3/remquo.3:12 build/C/man3/rint.3:27 build/C/man3/round.3:27 build/C/man3/scalb.3:27 build/C/man3/scalbln.3:27 build/C/man3/signbit.3:11 build/C/man3/significand.3:9 build/C/man3/sin.3:35 build/C/man3/sincos.3:9 build/C/man3/sinh.3:36 build/C/man3/sqrt.3:34 build/C/man3/tan.3:35 build/C/man3/tanh.3:35 build/C/man3/tgamma.3:13 build/C/man3/trunc.3:25 build/C/man3/y0.3:36
34 msgid "Linux Programmer's Manual"
38 #: build/C/man3/INFINITY.3:26 build/C/man3/abs.3:35 build/C/man3/acos.3:36 build/C/man3/acosh.3:36 build/C/man3/asin.3:36 build/C/man3/asinh.3:36 build/C/man3/atan.3:36 build/C/man3/atan2.3:36 build/C/man3/atanh.3:36 build/C/man3/cbrt.3:31 build/C/man3/ceil.3:28 build/C/man3/copysign.3:32 build/C/man3/cos.3:35 build/C/man3/cosh.3:37 build/C/man3/div.3:35 build/C/man3/erf.3:36 build/C/man3/erfc.3:27 build/C/man3/exp.3:37 build/C/man3/exp10.3:36 build/C/man3/exp2.3:37 build/C/man3/expm1.3:31 build/C/man3/fabs.3:33 build/C/man3/fdim.3:10 build/C/man3/fenv.3:28 build/C/man3/finite.3:26 build/C/man3/floor.3:28 build/C/man3/fma.3:13 build/C/man3/fmax.3:10 build/C/man3/fmin.3:10 build/C/man3/fmod.3:36 build/C/man3/fpclassify.3:11 build/C/man3/frexp.3:34 build/C/man3/gamma.3:10 build/C/man3/hypot.3:34 build/C/man3/ilogb.3:30 build/C/man3/infnan.3:34 build/C/man3/isgreater.3:11 build/C/man3/j0.3:37 build/C/man3/ldexp.3:35 build/C/man3/lgamma.3:12 build/C/man3/log.3:37 build/C/man3/log10.3:37 build/C/man3/log1p.3:30 build/C/man3/log2.3:37 build/C/man3/logb.3:30 build/C/man3/lrint.3:28 build/C/man3/lround.3:28 build/C/man7/math_error.7:27 build/C/man3/matherr.3:28 build/C/man3/modf.3:34 build/C/man3/nan.3:12 build/C/man3/nextafter.3:12 build/C/man3/pow.3:36 build/C/man3/pow10.3:26 build/C/man3/remainder.3:38 build/C/man3/remquo.3:13 build/C/man3/rint.3:28 build/C/man3/round.3:28 build/C/man3/scalb.3:28 build/C/man3/scalbln.3:28 build/C/man3/signbit.3:12 build/C/man3/significand.3:10 build/C/man3/sin.3:36 build/C/man3/sincos.3:10 build/C/man3/sinh.3:37 build/C/man3/sqrt.3:35 build/C/man3/tan.3:36 build/C/man3/tanh.3:36 build/C/man3/tgamma.3:14 build/C/man3/trunc.3:26 build/C/man3/y0.3:37
44 #: build/C/man3/INFINITY.3:28
45 msgid "INFINITY, NAN, HUGE_VAL, HUGE_VALF, HUGE_VALL - floating-point constants"
49 #: build/C/man3/INFINITY.3:28 build/C/man3/abs.3:37 build/C/man3/acos.3:38 build/C/man3/acosh.3:38 build/C/man3/asin.3:38 build/C/man3/asinh.3:38 build/C/man3/atan.3:38 build/C/man3/atan2.3:38 build/C/man3/atanh.3:38 build/C/man3/cbrt.3:33 build/C/man3/ceil.3:31 build/C/man3/copysign.3:34 build/C/man3/cos.3:37 build/C/man3/cosh.3:39 build/C/man3/div.3:38 build/C/man3/erf.3:38 build/C/man3/erfc.3:29 build/C/man3/exp.3:39 build/C/man3/exp10.3:38 build/C/man3/exp2.3:39 build/C/man3/expm1.3:33 build/C/man3/fabs.3:35 build/C/man3/fdim.3:12 build/C/man3/fenv.3:33 build/C/man3/finite.3:29 build/C/man3/floor.3:30 build/C/man3/fma.3:15 build/C/man3/fmax.3:12 build/C/man3/fmin.3:12 build/C/man3/fmod.3:38 build/C/man3/fpclassify.3:14 build/C/man3/frexp.3:37 build/C/man3/gamma.3:12 build/C/man3/hypot.3:36 build/C/man3/ilogb.3:32 build/C/man3/infnan.3:36 build/C/man3/isgreater.3:14 build/C/man3/j0.3:40 build/C/man3/ldexp.3:37 build/C/man3/lgamma.3:15 build/C/man3/log.3:39 build/C/man3/log10.3:39 build/C/man3/log1p.3:32 build/C/man3/log2.3:39 build/C/man3/logb.3:32 build/C/man3/lrint.3:30 build/C/man3/lround.3:31 build/C/man7/math_error.7:29 build/C/man3/matherr.3:30 build/C/man3/modf.3:37 build/C/man3/nan.3:14 build/C/man3/nextafter.3:15 build/C/man3/pow.3:38 build/C/man3/pow10.3:28 build/C/man3/remainder.3:41 build/C/man3/remquo.3:15 build/C/man3/rint.3:31 build/C/man3/round.3:30 build/C/man3/scalb.3:31 build/C/man3/scalbln.3:31 build/C/man3/signbit.3:14 build/C/man3/significand.3:13 build/C/man3/sin.3:38 build/C/man3/sincos.3:12 build/C/man3/sinh.3:39 build/C/man3/sqrt.3:37 build/C/man3/tan.3:38 build/C/man3/tanh.3:38 build/C/man3/tgamma.3:16 build/C/man3/trunc.3:28 build/C/man3/y0.3:40
55 #: build/C/man3/INFINITY.3:31
57 msgid "B<#define _ISOC99_SOURCE> /* See feature_test_macros(7) */\n"
61 #: build/C/man3/INFINITY.3:33 build/C/man3/acos.3:41 build/C/man3/acosh.3:41 build/C/man3/asin.3:41 build/C/man3/asinh.3:41 build/C/man3/atan.3:41 build/C/man3/atan2.3:41 build/C/man3/atanh.3:41 build/C/man3/cbrt.3:36 build/C/man3/ceil.3:34 build/C/man3/copysign.3:37 build/C/man3/cos.3:40 build/C/man3/cosh.3:42 build/C/man3/erf.3:41 build/C/man3/erfc.3:32 build/C/man3/exp.3:42 build/C/man3/exp10.3:43 build/C/man3/exp2.3:42 build/C/man3/expm1.3:36 build/C/man3/fabs.3:38 build/C/man3/finite.3:32 build/C/man3/floor.3:33 build/C/man3/fma.3:18 build/C/man3/fmod.3:41 build/C/man3/fpclassify.3:17 build/C/man3/frexp.3:40 build/C/man3/hypot.3:39 build/C/man3/infnan.3:39 build/C/man3/isgreater.3:17 build/C/man3/j0.3:43 build/C/man3/ldexp.3:40 build/C/man3/lgamma.3:18 build/C/man3/log.3:42 build/C/man3/log10.3:42 build/C/man3/log1p.3:35 build/C/man3/log2.3:42 build/C/man3/lrint.3:33 build/C/man3/lround.3:34 build/C/man3/modf.3:40 build/C/man3/pow.3:41 build/C/man3/remainder.3:44 build/C/man3/remquo.3:18 build/C/man3/rint.3:34 build/C/man3/round.3:33 build/C/man3/sin.3:41 build/C/man3/sinh.3:42 build/C/man3/sqrt.3:40 build/C/man3/tan.3:41 build/C/man3/tanh.3:41 build/C/man3/trunc.3:31 build/C/man3/y0.3:43
63 msgid "B<#include E<lt>math.hE<gt>>\n"
67 #: build/C/man3/INFINITY.3:35
73 #: build/C/man3/INFINITY.3:37
79 #: build/C/man3/INFINITY.3:39
85 #: build/C/man3/INFINITY.3:41
87 msgid "B<HUGE_VALF>\n"
91 #: build/C/man3/INFINITY.3:43
93 msgid "B<HUGE_VALL>\n"
97 #: build/C/man3/INFINITY.3:44 build/C/man3/abs.3:67 build/C/man3/acos.3:65 build/C/man3/acosh.3:77 build/C/man3/asin.3:67 build/C/man3/asinh.3:77 build/C/man3/atan.3:67 build/C/man3/atan2.3:65 build/C/man3/atanh.3:77 build/C/man3/cbrt.3:72 build/C/man3/ceil.3:60 build/C/man3/copysign.3:64 build/C/man3/cos.3:66 build/C/man3/cosh.3:68 build/C/man3/div.3:68 build/C/man3/erf.3:74 build/C/man3/erfc.3:65 build/C/man3/exp.3:68 build/C/man3/exp10.3:52 build/C/man3/exp2.3:68 build/C/man3/expm1.3:72 build/C/man3/fabs.3:64 build/C/man3/fdim.3:39 build/C/man3/fenv.3:61 build/C/man3/finite.3:90 build/C/man3/floor.3:59 build/C/man3/fma.3:45 build/C/man3/fmax.3:40 build/C/man3/fmin.3:40 build/C/man3/fmod.3:67 build/C/man3/fpclassify.3:66 build/C/man3/frexp.3:66 build/C/man3/gamma.3:40 build/C/man3/hypot.3:74 build/C/man3/ilogb.3:70 build/C/man3/infnan.3:44 build/C/man3/isgreater.3:48 build/C/man3/j0.3:89 build/C/man3/ldexp.3:66 build/C/man3/lgamma.3:71 build/C/man3/log.3:68 build/C/man3/log10.3:68 build/C/man3/log1p.3:71 build/C/man3/log2.3:68 build/C/man3/logb.3:69 build/C/man3/lrint.3:64 build/C/man3/lround.3:65 build/C/man7/math_error.7:35 build/C/man3/matherr.3:41 build/C/man3/modf.3:66 build/C/man3/nan.3:42 build/C/man3/nextafter.3:70 build/C/man3/pow.3:67 build/C/man3/pow10.3:41 build/C/man3/remainder.3:92 build/C/man3/remquo.3:45 build/C/man3/rint.3:86 build/C/man3/round.3:60 build/C/man3/scalb.3:60 build/C/man3/scalbln.3:76 build/C/man3/signbit.3:36 build/C/man3/significand.3:37 build/C/man3/sin.3:67 build/C/man3/sincos.3:25 build/C/man3/sinh.3:68 build/C/man3/sqrt.3:66 build/C/man3/tan.3:67 build/C/man3/tanh.3:67 build/C/man3/tgamma.3:44 build/C/man3/trunc.3:58 build/C/man3/y0.3:89
103 #: build/C/man3/INFINITY.3:50
105 "The macro B<INFINITY> expands to a I<float> constant representing positive "
110 #: build/C/man3/INFINITY.3:65
112 "The macro B<NAN> expands to a I<float> constant representing a quiet NaN "
113 "(when supported). A I<quiet> NaN is a NaN (\"not-a-number\") that does not "
114 "raise exceptions when it is used in arithmetic. The opposite is a "
115 "I<signaling> NaN. See IEC 60559:1989."
119 #: build/C/man3/INFINITY.3:77
121 "The macros B<HUGE_VAL>, B<HUGE_VALF>, B<HUGE_VALL> expand to constants of "
122 "types I<double>, I<float> and I<long double>, respectively, that represent a "
123 "large positive value, possibly plus infinity."
127 #: build/C/man3/INFINITY.3:77 build/C/man3/abs.3:91 build/C/man3/acos.3:113 build/C/man3/acosh.3:120 build/C/man3/asin.3:111 build/C/man3/asinh.3:105 build/C/man3/atan.3:96 build/C/man3/atan2.3:166 build/C/man3/atanh.3:139 build/C/man3/cbrt.3:90 build/C/man3/ceil.3:89 build/C/man3/copysign.3:92 build/C/man3/cos.3:104 build/C/man3/cosh.3:119 build/C/man3/div.3:91 build/C/man3/erf.3:126 build/C/man3/erfc.3:122 build/C/man3/exp.3:128 build/C/man3/exp10.3:77 build/C/man3/exp2.3:91 build/C/man3/expm1.3:136 build/C/man3/fabs.3:87 build/C/man3/fdim.3:81 build/C/man3/fenv.3:265 build/C/man3/floor.3:80 build/C/man3/fma.3:156 build/C/man3/fmax.3:58 build/C/man3/fmin.3:58 build/C/man3/fmod.3:146 build/C/man3/fpclassify.3:118 build/C/man3/frexp.3:108 build/C/man3/gamma.3:65 build/C/man3/hypot.3:158 build/C/man3/ilogb.3:146 build/C/man3/infnan.3:87 build/C/man3/isgreater.3:125 build/C/man3/j0.3:150 build/C/man3/ldexp.3:129 build/C/man3/lgamma.3:156 build/C/man3/log.3:128 build/C/man3/log10.3:89 build/C/man3/log1p.3:142 build/C/man3/log2.3:91 build/C/man3/logb.3:143 build/C/man3/lrint.3:109 build/C/man3/lround.3:112 build/C/man3/modf.3:103 build/C/man3/nan.3:75 build/C/man3/nextafter.3:173 build/C/man3/pow.3:316 build/C/man3/pow10.3:49 build/C/man3/remainder.3:180 build/C/man3/remquo.3:124 build/C/man3/rint.3:116 build/C/man3/round.3:96 build/C/man3/scalb.3:177 build/C/man3/scalbln.3:171 build/C/man3/signbit.3:66 build/C/man3/significand.3:51 build/C/man3/sin.3:108 build/C/man3/sincos.3:75 build/C/man3/sinh.3:124 build/C/man3/sqrt.3:107 build/C/man3/tan.3:133 build/C/man3/tanh.3:100 build/C/man3/tgamma.3:162 build/C/man3/trunc.3:83 build/C/man3/y0.3:223
129 msgid "CONFORMING TO"
133 #: build/C/man3/INFINITY.3:79
138 #: build/C/man3/INFINITY.3:79
144 #: build/C/man3/INFINITY.3:101
146 "On a glibc system, the macro B<HUGE_VAL> is always available. Availability "
147 "of the B<NAN> macro can be tested using B<#ifdef NAN>, and similarly for "
148 "B<INFINITY>, B<HUGE_VALF>, B<HUGE_VALL>. They will be defined by "
149 "I<E<lt>math.hE<gt>> if B<_ISOC99_SOURCE> or B<_GNU_SOURCE> is defined, or "
150 "B<__STDC_VERSION__> is defined and has a value not less than 199901L."
154 #: build/C/man3/INFINITY.3:101 build/C/man3/abs.3:135 build/C/man3/acos.3:119 build/C/man3/acosh.3:126 build/C/man3/asin.3:117 build/C/man3/asinh.3:111 build/C/man3/atan.3:102 build/C/man3/atan2.3:172 build/C/man3/atanh.3:156 build/C/man3/cbrt.3:94 build/C/man3/ceil.3:120 build/C/man3/copysign.3:102 build/C/man3/cos.3:117 build/C/man3/cosh.3:130 build/C/man3/div.3:106 build/C/man3/erf.3:132 build/C/man3/erfc.3:135 build/C/man3/exp.3:134 build/C/man3/exp10.3:79 build/C/man3/exp2.3:97 build/C/man3/expm1.3:170 build/C/man3/fabs.3:93 build/C/man3/fdim.3:83 build/C/man3/fenv.3:323 build/C/man3/finite.3:132 build/C/man3/floor.3:102 build/C/man3/fma.3:158 build/C/man3/fmax.3:60 build/C/man3/fmin.3:60 build/C/man3/fmod.3:160 build/C/man3/fpclassify.3:132 build/C/man3/frexp.3:147 build/C/man3/gamma.3:97 build/C/man3/hypot.3:164 build/C/man3/ilogb.3:148 build/C/man3/isgreater.3:132 build/C/man3/j0.3:165 build/C/man3/ldexp.3:135 build/C/man3/lgamma.3:175 build/C/man3/log.3:141 build/C/man3/log10.3:95 build/C/man3/log1p.3:145 build/C/man3/log2.3:97 build/C/man3/logb.3:145 build/C/man3/lrint.3:111 build/C/man3/lround.3:114 build/C/man7/math_error.7:256 build/C/man3/matherr.3:425 build/C/man3/modf.3:109 build/C/man3/nan.3:79 build/C/man3/nextafter.3:182 build/C/man3/pow.3:365 build/C/man3/pow10.3:54 build/C/man3/remainder.3:215 build/C/man3/remquo.3:126 build/C/man3/rint.3:138 build/C/man3/round.3:119 build/C/man3/scalb.3:200 build/C/man3/scalbln.3:189 build/C/man3/signbit.3:70 build/C/man3/significand.3:57 build/C/man3/sin.3:121 build/C/man3/sincos.3:77 build/C/man3/sinh.3:130 build/C/man3/sqrt.3:113 build/C/man3/tan.3:146 build/C/man3/tanh.3:106 build/C/man3/tgamma.3:188 build/C/man3/trunc.3:94 build/C/man3/y0.3:246
160 #: build/C/man3/INFINITY.3:104
161 msgid "B<fpclassify>(3), B<math_error>(7)"
165 #: build/C/man3/INFINITY.3:104 build/C/man3/abs.3:141 build/C/man3/acos.3:127 build/C/man3/acosh.3:133 build/C/man3/asin.3:125 build/C/man3/asinh.3:118 build/C/man3/atan.3:111 build/C/man3/atan2.3:180 build/C/man3/atanh.3:163 build/C/man3/cbrt.3:97 build/C/man3/ceil.3:127 build/C/man3/copysign.3:104 build/C/man3/cos.3:126 build/C/man3/cosh.3:137 build/C/man3/div.3:109 build/C/man3/erf.3:136 build/C/man3/erfc.3:139 build/C/man3/exp.3:140 build/C/man3/exp10.3:85 build/C/man3/exp2.3:103 build/C/man3/expm1.3:174 build/C/man3/fabs.3:100 build/C/man3/fdim.3:85 build/C/man3/fenv.3:325 build/C/man3/finite.3:134 build/C/man3/floor.3:109 build/C/man3/fma.3:161 build/C/man3/fmax.3:62 build/C/man3/fmin.3:62 build/C/man3/fmod.3:162 build/C/man3/fpclassify.3:137 build/C/man3/frexp.3:150 build/C/man3/gamma.3:101 build/C/man3/hypot.3:167 build/C/man3/ilogb.3:152 build/C/man3/infnan.3:92 build/C/man3/isgreater.3:135 build/C/man3/j0.3:167 build/C/man3/ldexp.3:139 build/C/man3/lgamma.3:177 build/C/man3/log.3:148 build/C/man3/log10.3:102 build/C/man3/log1p.3:149 build/C/man3/log2.3:103 build/C/man3/logb.3:148 build/C/man3/lrint.3:118 build/C/man3/lround.3:121 build/C/man7/math_error.7:267 build/C/man3/matherr.3:429 build/C/man3/modf.3:112 build/C/man3/nan.3:83 build/C/man3/nextafter.3:184 build/C/man3/pow.3:369 build/C/man3/pow10.3:57 build/C/man3/remainder.3:219 build/C/man3/remquo.3:130 build/C/man3/rint.3:144 build/C/man3/round.3:126 build/C/man3/scalb.3:203 build/C/man3/scalbln.3:192 build/C/man3/signbit.3:72 build/C/man3/significand.3:60 build/C/man3/sin.3:130 build/C/man3/sincos.3:81 build/C/man3/sinh.3:137 build/C/man3/sqrt.3:117 build/C/man3/tan.3:154 build/C/man3/tanh.3:113 build/C/man3/tgamma.3:191 build/C/man3/trunc.3:101 build/C/man3/y0.3:248
171 #: build/C/man3/INFINITY.3:111 build/C/man3/abs.3:148 build/C/man3/acos.3:134 build/C/man3/acosh.3:140 build/C/man3/asin.3:132 build/C/man3/asinh.3:125 build/C/man3/atan.3:118 build/C/man3/atan2.3:187 build/C/man3/atanh.3:170 build/C/man3/cbrt.3:104 build/C/man3/ceil.3:134 build/C/man3/copysign.3:111 build/C/man3/cos.3:133 build/C/man3/cosh.3:144 build/C/man3/div.3:116 build/C/man3/erf.3:143 build/C/man3/erfc.3:146 build/C/man3/exp.3:147 build/C/man3/exp10.3:92 build/C/man3/exp2.3:110 build/C/man3/expm1.3:181 build/C/man3/fabs.3:107 build/C/man3/fdim.3:92 build/C/man3/fenv.3:332 build/C/man3/finite.3:141 build/C/man3/floor.3:116 build/C/man3/fma.3:168 build/C/man3/fmax.3:69 build/C/man3/fmin.3:69 build/C/man3/fmod.3:169 build/C/man3/fpclassify.3:144 build/C/man3/frexp.3:157 build/C/man3/gamma.3:108 build/C/man3/hypot.3:174 build/C/man3/ilogb.3:159 build/C/man3/infnan.3:99 build/C/man3/isgreater.3:142 build/C/man3/j0.3:174 build/C/man3/ldexp.3:146 build/C/man3/lgamma.3:184 build/C/man3/log.3:155 build/C/man3/log10.3:109 build/C/man3/log1p.3:156 build/C/man3/log2.3:110 build/C/man3/logb.3:155 build/C/man3/lrint.3:125 build/C/man3/lround.3:128 build/C/man7/math_error.7:274 build/C/man3/matherr.3:436 build/C/man3/modf.3:119 build/C/man3/nan.3:90 build/C/man3/nextafter.3:191 build/C/man3/pow.3:376 build/C/man3/pow10.3:64 build/C/man3/remainder.3:226 build/C/man3/remquo.3:137 build/C/man3/rint.3:151 build/C/man3/round.3:133 build/C/man3/scalb.3:210 build/C/man3/scalbln.3:199 build/C/man3/signbit.3:79 build/C/man3/significand.3:67 build/C/man3/sin.3:137 build/C/man3/sincos.3:88 build/C/man3/sinh.3:144 build/C/man3/sqrt.3:124 build/C/man3/tan.3:161 build/C/man3/tanh.3:120 build/C/man3/tgamma.3:198 build/C/man3/trunc.3:108 build/C/man3/y0.3:255
173 "This page is part of release 3.52 of the Linux I<man-pages> project. A "
174 "description of the project, and information about reporting bugs, can be "
175 "found at \\%http://www.kernel.org/doc/man-pages/."
179 #: build/C/man3/abs.3:34
185 #: build/C/man3/abs.3:34 build/C/man3/ceil.3:27 build/C/man3/modf.3:33 build/C/man3/round.3:27 build/C/man3/scalbln.3:27 build/C/man3/trunc.3:25
191 #: build/C/man3/abs.3:34 build/C/man3/asinh.3:35 build/C/man3/cbrt.3:30 build/C/man3/copysign.3:31 build/C/man3/erf.3:35 build/C/man3/erfc.3:26 build/C/man3/exp10.3:35 build/C/man3/gamma.3:9 build/C/man3/infnan.3:33 build/C/man3/nan.3:11 build/C/man3/nextafter.3:11 build/C/man3/remquo.3:12 build/C/man3/signbit.3:11 build/C/man3/significand.3:9 build/C/man3/sincos.3:9 build/C/man3/tgamma.3:13
197 #: build/C/man3/abs.3:37
198 msgid "abs, labs, llabs, imaxabs - compute the absolute value of an integer"
202 #: build/C/man3/abs.3:40 build/C/man3/div.3:41
204 msgid "B<#include E<lt>stdlib.hE<gt>>\n"
208 #: build/C/man3/abs.3:42
210 msgid "B<int abs(int >I<j>B<);>\n"
214 #: build/C/man3/abs.3:44
216 msgid "B<long int labs(long int >I<j>B<);>\n"
220 #: build/C/man3/abs.3:46
222 msgid "B<long long int llabs(long long int >I<j>B<);>\n"
226 #: build/C/man3/abs.3:48 build/C/man3/div.3:49
228 msgid "B<#include E<lt>inttypes.hE<gt>>\n"
232 #: build/C/man3/abs.3:50
234 msgid "B<intmax_t imaxabs(intmax_t >I<j>B<);>\n"
238 #: build/C/man3/abs.3:55 build/C/man3/acos.3:52 build/C/man3/acosh.3:54 build/C/man3/asin.3:54 build/C/man3/asinh.3:54 build/C/man3/atan.3:54 build/C/man3/atan2.3:52 build/C/man3/atanh.3:54 build/C/man3/cbrt.3:49 build/C/man3/ceil.3:47 build/C/man3/copysign.3:50 build/C/man3/cos.3:53 build/C/man3/cosh.3:55 build/C/man3/div.3:56 build/C/man3/erf.3:52 build/C/man3/erfc.3:43 build/C/man3/exp.3:55 build/C/man3/exp2.3:55 build/C/man3/expm1.3:49 build/C/man3/fabs.3:51 build/C/man3/fdim.3:26 build/C/man3/finite.3:55 build/C/man3/floor.3:46 build/C/man3/fma.3:31 build/C/man3/fmax.3:26 build/C/man3/fmin.3:26 build/C/man3/fmod.3:54 build/C/man3/fpclassify.3:34 build/C/man3/frexp.3:53 build/C/man3/gamma.3:26 build/C/man3/hypot.3:52 build/C/man3/ilogb.3:46 build/C/man3/isgreater.3:36 build/C/man3/j0.3:68 build/C/man3/ldexp.3:53 build/C/man3/lgamma.3:39 build/C/man3/log.3:55 build/C/man3/log10.3:55 build/C/man3/log1p.3:48 build/C/man3/log2.3:55 build/C/man3/logb.3:46 build/C/man3/lrint.3:52 build/C/man3/lround.3:53 build/C/man3/modf.3:53 build/C/man3/nan.3:28 build/C/man3/nextafter.3:35 build/C/man3/pow.3:54 build/C/man3/remainder.3:61 build/C/man3/remquo.3:31 build/C/man3/rint.3:53 build/C/man3/round.3:46 build/C/man3/scalb.3:45 build/C/man3/scalbln.3:51 build/C/man3/signbit.3:24 build/C/man3/significand.3:27 build/C/man3/sin.3:54 build/C/man3/sinh.3:55 build/C/man3/sqrt.3:53 build/C/man3/tan.3:54 build/C/man3/tanh.3:54 build/C/man3/tgamma.3:30 build/C/man3/trunc.3:44 build/C/man3/y0.3:68
239 msgid "Feature Test Macro Requirements for glibc (see B<feature_test_macros>(7)):"
243 #: build/C/man3/abs.3:59
248 #: build/C/man3/abs.3:62 build/C/man3/div.3:63 build/C/man3/exp2.3:63 build/C/man3/fdim.3:34 build/C/man3/fma.3:40 build/C/man3/fmax.3:35 build/C/man3/fmin.3:35 build/C/man3/fpclassify.3:45 build/C/man3/isgreater.3:43 build/C/man3/log2.3:63 build/C/man3/lrint.3:59 build/C/man3/lround.3:60 build/C/man3/nan.3:37 build/C/man3/nextafter.3:65 build/C/man3/remquo.3:40 build/C/man3/round.3:55 build/C/man3/scalbln.3:60 build/C/man3/signbit.3:31 build/C/man3/tgamma.3:39 build/C/man3/trunc.3:53
250 "_XOPEN_SOURCE\\ E<gt>=\\ 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE\\ E<gt>=\\ "
255 #: build/C/man3/abs.3:65 build/C/man3/acos.3:63 build/C/man3/acosh.3:65 build/C/man3/acosh.3:75 build/C/man3/asin.3:65 build/C/man3/asinh.3:65 build/C/man3/asinh.3:75 build/C/man3/atan.3:65 build/C/man3/atan2.3:63 build/C/man3/atanh.3:65 build/C/man3/atanh.3:75 build/C/man3/cbrt.3:61 build/C/man3/cbrt.3:70 build/C/man3/ceil.3:58 build/C/man3/copysign.3:62 build/C/man3/cos.3:64 build/C/man3/cosh.3:66 build/C/man3/div.3:66 build/C/man3/erf.3:62 build/C/man3/erf.3:72 build/C/man3/erfc.3:53 build/C/man3/erfc.3:63 build/C/man3/exp.3:66 build/C/man3/exp2.3:66 build/C/man3/expm1.3:60 build/C/man3/expm1.3:70 build/C/man3/fabs.3:62 build/C/man3/fdim.3:37 build/C/man3/finite.3:70 build/C/man3/finite.3:83 build/C/man3/floor.3:57 build/C/man3/fma.3:43 build/C/man3/fmax.3:38 build/C/man3/fmin.3:38 build/C/man3/fmod.3:65 build/C/man3/fpclassify.3:48 build/C/man3/fpclassify.3:56 build/C/man3/fpclassify.3:64 build/C/man3/frexp.3:64 build/C/man3/hypot.3:62 build/C/man3/hypot.3:72 build/C/man3/ilogb.3:58 build/C/man3/ilogb.3:68 build/C/man3/isgreater.3:46 build/C/man3/ldexp.3:64 build/C/man3/lgamma.3:49 build/C/man3/lgamma.3:59 build/C/man3/log.3:66 build/C/man3/log10.3:66 build/C/man3/log1p.3:59 build/C/man3/log1p.3:69 build/C/man3/log2.3:66 build/C/man3/logb.3:57 build/C/man3/logb.3:67 build/C/man3/lrint.3:62 build/C/man3/lround.3:63 build/C/man3/modf.3:64 build/C/man3/nan.3:40 build/C/man3/nextafter.3:47 build/C/man3/nextafter.3:57 build/C/man3/nextafter.3:68 build/C/man3/pow.3:65 build/C/man3/remainder.3:73 build/C/man3/remainder.3:83 build/C/man3/remquo.3:43 build/C/man3/rint.3:64 build/C/man3/rint.3:74 build/C/man3/rint.3:84 build/C/man3/round.3:58 build/C/man3/scalbln.3:63 build/C/man3/scalbln.3:74 build/C/man3/signbit.3:34 build/C/man3/sin.3:65 build/C/man3/sinh.3:66 build/C/man3/sqrt.3:64 build/C/man3/tan.3:65 build/C/man3/tanh.3:65 build/C/man3/tgamma.3:42 build/C/man3/trunc.3:56
256 msgid "or I<cc\\ -std=c99>"
260 #: build/C/man3/abs.3:79
262 "The B<abs>() function computes the absolute value of the integer argument "
263 "I<j>. The B<labs>(), B<llabs>() and B<imaxabs>() functions compute the "
264 "absolute value of the argument I<j> of the appropriate integer type for the "
269 #: build/C/man3/abs.3:79 build/C/man3/acos.3:73 build/C/man3/acosh.3:84 build/C/man3/asin.3:74 build/C/man3/asinh.3:84 build/C/man3/atan.3:74 build/C/man3/atan2.3:72 build/C/man3/atanh.3:84 build/C/man3/cbrt.3:79 build/C/man3/ceil.3:69 build/C/man3/copysign.3:78 build/C/man3/cos.3:75 build/C/man3/cosh.3:79 build/C/man3/div.3:89 build/C/man3/erf.3:83 build/C/man3/erfc.3:71 build/C/man3/exp.3:74 build/C/man3/exp10.3:58 build/C/man3/exp2.3:74 build/C/man3/expm1.3:88 build/C/man3/fabs.3:70 build/C/man3/fdim.3:42 build/C/man3/fenv.3:258 build/C/man3/floor.3:68 build/C/man3/fma.3:53 build/C/man3/fmax.3:45 build/C/man3/fmin.3:45 build/C/man3/fmod.3:87 build/C/man3/frexp.3:74 build/C/man3/gamma.3:59 build/C/man3/hypot.3:92 build/C/man3/ilogb.3:78 build/C/man3/infnan.3:56 build/C/man3/isgreater.3:111 build/C/man3/j0.3:114 build/C/man3/ldexp.3:73 build/C/man3/lgamma.3:94 build/C/man3/log.3:73 build/C/man3/log10.3:73 build/C/man3/log1p.3:83 build/C/man3/log2.3:73 build/C/man3/logb.3:94 build/C/man3/lrint.3:73 build/C/man3/lround.3:76 build/C/man3/modf.3:76 build/C/man3/nextafter.3:98 build/C/man3/pow.3:75 build/C/man3/remainder.3:118 build/C/man3/remquo.3:73 build/C/man3/rint.3:105 build/C/man3/round.3:75 build/C/man3/scalb.3:79 build/C/man3/scalbln.3:95 build/C/man3/signbit.3:53 build/C/man3/sin.3:76 build/C/man3/sincos.3:49 build/C/man3/sinh.3:79 build/C/man3/sqrt.3:71 build/C/man3/tan.3:76 build/C/man3/tanh.3:78 build/C/man3/tgamma.3:67 build/C/man3/trunc.3:63 build/C/man3/y0.3:119
275 #: build/C/man3/abs.3:82
277 "Returns the absolute value of the integer argument, of the appropriate "
278 "integer type for the function."
282 #: build/C/man3/abs.3:82 build/C/man3/ceil.3:81 build/C/man3/modf.3:95 build/C/man3/round.3:88 build/C/man3/scalbln.3:160 build/C/man3/signbit.3:61 build/C/man3/trunc.3:75
288 #: build/C/man3/abs.3:83 build/C/man3/ceil.3:82 build/C/man3/modf.3:96 build/C/man3/round.3:89 build/C/man3/scalbln.3:161 build/C/man3/signbit.3:62 build/C/man3/trunc.3:76
290 msgid "Multithreading (see pthreads(7))"
294 #: build/C/man3/abs.3:91
296 "The B<abs>(), B<labs>(), B<llabs>(), and B<imaxabs>() functions are "
300 #. POSIX.1 (1996 edition) requires only the
304 #: build/C/man3/abs.3:106
306 "SVr4, POSIX.1-2001, 4.3BSD, C99. C89 only includes the B<abs>() and "
307 "B<labs>() functions; the functions B<llabs>() and B<imaxabs>() were added "
312 #: build/C/man3/abs.3:106 build/C/man3/ceil.3:95 build/C/man3/copysign.3:97 build/C/man3/erfc.3:128 build/C/man3/fenv.3:267 build/C/man3/finite.3:112 build/C/man3/floor.3:86 build/C/man3/fpclassify.3:125 build/C/man3/gamma.3:68 build/C/man3/infnan.3:89 build/C/man3/isgreater.3:127 build/C/man7/math_error.7:187 build/C/man3/pow10.3:51 build/C/man3/rint.3:118 build/C/man3/round.3:98 build/C/man3/scalbln.3:173 build/C/man3/tgamma.3:164 build/C/man3/trunc.3:85
318 #: build/C/man3/abs.3:109
320 "Trying to take the absolute value of the most negative integer is not "
325 #: build/C/man3/abs.3:118
327 "The B<llabs>() function is included in glibc since version 2.0, but is not "
328 "in libc5 or libc4. The B<imaxabs>() function is included in glibc since "
333 #: build/C/man3/abs.3:124
335 "For B<llabs>() to be declared, it may be necessary to define "
336 "B<_ISOC99_SOURCE> or B<_ISOC9X_SOURCE> (depending on the version of glibc) "
337 "before including any standard headers."
341 #: build/C/man3/abs.3:135
343 "GCC handles B<abs>() and B<labs>() as built-in functions. GCC 3.0 also "
344 "handles B<llabs>() and B<imaxabs>() as built-ins."
348 #: build/C/man3/abs.3:141
349 msgid "B<cabs>(3), B<ceil>(3), B<fabs>(3), B<floor>(3), B<rint>(3)"
353 #: build/C/man3/acos.3:35
359 #: build/C/man3/acos.3:35 build/C/man3/acosh.3:35 build/C/man3/asin.3:35 build/C/man3/asinh.3:35 build/C/man3/atan.3:35 build/C/man3/atan2.3:35 build/C/man3/cbrt.3:30 build/C/man3/cosh.3:36 build/C/man3/erf.3:35 build/C/man3/erfc.3:26 build/C/man3/exp.3:36 build/C/man3/exp2.3:36 build/C/man3/fabs.3:32 build/C/man3/fdim.3:9 build/C/man3/floor.3:27 build/C/man3/fma.3:12 build/C/man3/fmax.3:9 build/C/man3/fmin.3:9 build/C/man3/fpclassify.3:10 build/C/man3/frexp.3:33 build/C/man3/hypot.3:33 build/C/man3/ilogb.3:29 build/C/man3/j0.3:36 build/C/man3/ldexp.3:34 build/C/man3/log.3:36 build/C/man3/log10.3:36 build/C/man3/log1p.3:29 build/C/man3/logb.3:29 build/C/man3/lrint.3:27 build/C/man3/lround.3:27 build/C/man3/nan.3:11 build/C/man3/nextafter.3:11 build/C/man3/remainder.3:37 build/C/man3/remquo.3:12 build/C/man3/rint.3:27 build/C/man3/sinh.3:36 build/C/man3/sqrt.3:34 build/C/man3/tanh.3:35 build/C/man3/tgamma.3:13
365 #: build/C/man3/acos.3:38
366 msgid "acos, acosf, acosl - arc cosine function"
370 #: build/C/man3/acos.3:45
373 "B<double acos(double >I<x>B<);>\n"
374 "B<float acosf(float >I<x>B<);>\n"
375 "B<long double acosl(long double >I<x>B<);>\n"
379 #: build/C/man3/acos.3:48 build/C/man3/acosh.3:50 build/C/man3/asin.3:50 build/C/man3/asinh.3:50 build/C/man3/atan.3:50 build/C/man3/atan2.3:48 build/C/man3/atanh.3:50 build/C/man3/cbrt.3:45 build/C/man3/ceil.3:43 build/C/man3/copysign.3:46 build/C/man3/cos.3:49 build/C/man3/cosh.3:51 build/C/man3/erf.3:48 build/C/man3/erfc.3:39 build/C/man3/exp.3:51 build/C/man3/exp10.3:52 build/C/man3/exp2.3:51 build/C/man3/expm1.3:45 build/C/man3/fabs.3:47 build/C/man3/fdim.3:22 build/C/man3/fenv.3:61 build/C/man3/floor.3:42 build/C/man3/fma.3:27 build/C/man3/fmax.3:22 build/C/man3/fmin.3:22 build/C/man3/fmod.3:50 build/C/man3/fpclassify.3:30 build/C/man3/frexp.3:49 build/C/man3/gamma.3:22 build/C/man3/hypot.3:48 build/C/man3/ilogb.3:42 build/C/man3/infnan.3:44 build/C/man3/isgreater.3:32 build/C/man3/j0.3:64 build/C/man3/ldexp.3:49 build/C/man3/lgamma.3:35 build/C/man3/log.3:51 build/C/man3/log10.3:51 build/C/man3/log1p.3:44 build/C/man3/log2.3:51 build/C/man3/logb.3:42 build/C/man3/lrint.3:48 build/C/man3/lround.3:49 build/C/man3/matherr.3:41 build/C/man3/modf.3:49 build/C/man3/nan.3:24 build/C/man3/nextafter.3:31 build/C/man3/pow.3:50 build/C/man3/pow10.3:41 build/C/man3/remainder.3:57 build/C/man3/remquo.3:27 build/C/man3/rint.3:49 build/C/man3/round.3:42 build/C/man3/scalb.3:41 build/C/man3/scalbln.3:47 build/C/man3/signbit.3:20 build/C/man3/significand.3:23 build/C/man3/sin.3:50 build/C/man3/sincos.3:25 build/C/man3/sinh.3:51 build/C/man3/sqrt.3:49 build/C/man3/tan.3:50 build/C/man3/tanh.3:50 build/C/man3/tgamma.3:26 build/C/man3/trunc.3:40 build/C/man3/y0.3:64
380 msgid "Link with I<-lm>."
384 #: build/C/man3/acos.3:57
385 msgid "B<acosf>(), B<acosl>():"
389 #: build/C/man3/acos.3:60 build/C/man3/acosh.3:72 build/C/man3/asin.3:62 build/C/man3/asinh.3:72 build/C/man3/atan.3:62 build/C/man3/atan2.3:60 build/C/man3/atanh.3:72 build/C/man3/ceil.3:55 build/C/man3/cos.3:61 build/C/man3/cosh.3:63 build/C/man3/erf.3:69 build/C/man3/exp.3:63 build/C/man3/expm1.3:67 build/C/man3/fabs.3:59 build/C/man3/floor.3:54 build/C/man3/fmod.3:62 build/C/man3/fpclassify.3:61 build/C/man3/frexp.3:61 build/C/man3/hypot.3:69 build/C/man3/ilogb.3:65 build/C/man3/ldexp.3:61 build/C/man3/lgamma.3:56 build/C/man3/log.3:63 build/C/man3/log10.3:63 build/C/man3/log1p.3:66 build/C/man3/logb.3:64 build/C/man3/modf.3:61 build/C/man3/nextafter.3:54 build/C/man3/pow.3:62 build/C/man3/remainder.3:80 build/C/man3/rint.3:81 build/C/man3/scalbln.3:71 build/C/man3/sin.3:62 build/C/man3/sinh.3:63 build/C/man3/sqrt.3:61 build/C/man3/tan.3:62 build/C/man3/tanh.3:62
391 "_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\\ E<gt>=\\ 600 || "
392 "_ISOC99_SOURCE || _POSIX_C_SOURCE\\ E<gt>=\\ 200112L;"
396 #: build/C/man3/acos.3:73
398 "The B<acos>() function calculates the arc cosine of I<x>; that is the value "
399 "whose cosine is I<x>."
403 #: build/C/man3/acos.3:77
405 "On success, these functions return the arc cosine of I<x> in radians; the "
406 "return value is in the range [0,\\ pi]."
410 #: build/C/man3/acos.3:81 build/C/man3/acosh.3:91 build/C/man3/asin.3:82 build/C/man3/asinh.3:91 build/C/man3/atan.3:82 build/C/man3/atanh.3:91 build/C/man3/cos.3:82 build/C/man3/cosh.3:86 build/C/man3/erf.3:91 build/C/man3/erfc.3:79 build/C/man3/exp.3:82 build/C/man3/expm1.3:96 build/C/man3/fabs.3:77 build/C/man3/j0.3:122 build/C/man3/ldexp.3:87 build/C/man3/lgamma.3:100 build/C/man3/log.3:81 build/C/man3/log1p.3:91 build/C/man3/logb.3:102 build/C/man3/scalbln.3:106 build/C/man3/sin.3:83 build/C/man3/sinh.3:86 build/C/man3/sqrt.3:78 build/C/man3/tan.3:83 build/C/man3/tanh.3:85 build/C/man3/tgamma.3:73 build/C/man3/y0.3:127
411 msgid "If I<x> is a NaN, a NaN is returned."
415 #: build/C/man3/acos.3:86 build/C/man3/acosh.3:95
416 msgid "If I<x> is +1, +0 is returned."
420 #: build/C/man3/acos.3:92 build/C/man3/cos.3:88 build/C/man3/sin.3:92 build/C/man3/tan.3:89
422 "If I<x> is positive infinity or negative infinity, a domain error occurs, "
423 "and a NaN is returned."
427 #. POSIX.1-2001 documents an optional range error for subnormal x;
428 #. glibc 2.8 does not do this.
430 #: build/C/man3/acos.3:98 build/C/man3/asin.3:96
432 "If I<x> is outside the range [-1,\\ 1], a domain error occurs, and a NaN is "
437 #: build/C/man3/acos.3:98 build/C/man3/acosh.3:105 build/C/man3/asin.3:96 build/C/man3/asinh.3:103 build/C/man3/atan.3:94 build/C/man3/atan2.3:162 build/C/man3/atanh.3:115 build/C/man3/cbrt.3:88 build/C/man3/ceil.3:78 build/C/man3/copysign.3:90 build/C/man3/cos.3:88 build/C/man3/cosh.3:104 build/C/man3/erf.3:106 build/C/man3/erfc.3:102 build/C/man3/exp.3:105 build/C/man3/exp10.3:65 build/C/man3/exp2.3:81 build/C/man3/expm1.3:117 build/C/man3/fabs.3:85 build/C/man3/fdim.3:59 build/C/man3/floor.3:77 build/C/man3/fma.3:117 build/C/man3/fmax.3:54 build/C/man3/fmin.3:54 build/C/man3/fmod.3:120 build/C/man3/frexp.3:106 build/C/man3/gamma.3:62 build/C/man3/hypot.3:128 build/C/man3/ilogb.3:110 build/C/man3/infnan.3:76 build/C/man3/isgreater.3:123 build/C/man3/j0.3:129 build/C/man3/ldexp.3:106 build/C/man3/lgamma.3:130 build/C/man3/log.3:105 build/C/man3/log10.3:81 build/C/man3/log1p.3:113 build/C/man3/log2.3:81 build/C/man3/logb.3:116 build/C/man3/lrint.3:87 build/C/man3/lround.3:90 build/C/man3/modf.3:93 build/C/man3/nextafter.3:143 build/C/man3/pow.3:256 build/C/man3/remainder.3:150 build/C/man3/remquo.3:101 build/C/man3/rint.3:113 build/C/man3/round.3:83 build/C/man3/scalb.3:138 build/C/man3/scalbln.3:130 build/C/man3/signbit.3:59 build/C/man3/sin.3:92 build/C/man3/sincos.3:52 build/C/man3/sinh.3:109 build/C/man3/sqrt.3:92 build/C/man3/tan.3:107 build/C/man3/tanh.3:98 build/C/man3/tgamma.3:107 build/C/man3/trunc.3:71 build/C/man3/y0.3:164
443 #: build/C/man3/acos.3:103 build/C/man3/acosh.3:110 build/C/man3/asin.3:101 build/C/man3/atanh.3:120 build/C/man3/cos.3:93 build/C/man3/cosh.3:109 build/C/man3/erf.3:111 build/C/man3/erfc.3:107 build/C/man3/exp.3:110 build/C/man3/exp10.3:70 build/C/man3/exp2.3:86 build/C/man3/expm1.3:122 build/C/man3/fdim.3:64 build/C/man3/fma.3:122 build/C/man3/fmod.3:125 build/C/man3/hypot.3:133 build/C/man3/ilogb.3:115 build/C/man3/j0.3:134 build/C/man3/ldexp.3:111 build/C/man3/lgamma.3:135 build/C/man3/log.3:110 build/C/man3/log10.3:86 build/C/man3/log1p.3:118 build/C/man3/log2.3:86 build/C/man3/logb.3:121 build/C/man3/lrint.3:92 build/C/man3/lround.3:95 build/C/man3/nextafter.3:148 build/C/man3/pow.3:281 build/C/man3/remainder.3:155 build/C/man3/remquo.3:106 build/C/man3/scalb.3:143 build/C/man3/scalbln.3:135 build/C/man3/sin.3:97 build/C/man3/sincos.3:57 build/C/man3/sinh.3:114 build/C/man3/sqrt.3:97 build/C/man3/tan.3:112 build/C/man3/tgamma.3:112 build/C/man3/y0.3:169
445 "See B<math_error>(7) for information on how to determine whether an error "
446 "has occurred when calling these functions."
450 #: build/C/man3/acos.3:105 build/C/man3/acosh.3:112 build/C/man3/asin.3:103 build/C/man3/atanh.3:122 build/C/man3/cos.3:95 build/C/man3/cosh.3:111 build/C/man3/erf.3:113 build/C/man3/erfc.3:109 build/C/man3/exp.3:112 build/C/man3/expm1.3:124 build/C/man3/fdim.3:66 build/C/man3/fma.3:124 build/C/man3/fmod.3:127 build/C/man3/hypot.3:135 build/C/man3/ilogb.3:117 build/C/man3/j0.3:136 build/C/man3/ldexp.3:113 build/C/man3/lgamma.3:137 build/C/man3/log.3:112 build/C/man3/log1p.3:120 build/C/man3/logb.3:123 build/C/man3/lrint.3:94 build/C/man3/lround.3:97 build/C/man3/nextafter.3:150 build/C/man3/pow.3:283 build/C/man3/remainder.3:157 build/C/man3/remquo.3:108 build/C/man3/scalb.3:145 build/C/man3/scalbln.3:137 build/C/man3/sin.3:99 build/C/man3/sincos.3:59 build/C/man3/sinh.3:116 build/C/man3/sqrt.3:99 build/C/man3/tan.3:114 build/C/man3/tgamma.3:114 build/C/man3/y0.3:171
451 msgid "The following errors can occur:"
455 #: build/C/man3/acos.3:105 build/C/man3/asin.3:103
457 msgid "Domain error: I<x> is outside the range [-1,\\ 1]"
461 #: build/C/man3/acos.3:113 build/C/man3/acosh.3:120 build/C/man3/asin.3:111 build/C/man3/atanh.3:130 build/C/man3/fmod.3:146 build/C/man3/log.3:120 build/C/man3/pow.3:291 build/C/man3/remainder.3:180 build/C/man3/sqrt.3:107 build/C/man3/y0.3:179
463 "I<errno> is set to B<EDOM>. An invalid floating-point exception "
464 "(B<FE_INVALID>) is raised."
468 #: build/C/man3/acos.3:119 build/C/man3/acosh.3:126 build/C/man3/asin.3:117 build/C/man3/asinh.3:111 build/C/man3/atan.3:102 build/C/man3/atan2.3:172 build/C/man3/atanh.3:145 build/C/man3/ceil.3:95 build/C/man3/exp.3:134 build/C/man3/exp2.3:97 build/C/man3/fabs.3:93 build/C/man3/floor.3:86 build/C/man3/fmod.3:152 build/C/man3/frexp.3:114 build/C/man3/ldexp.3:135 build/C/man3/log.3:134 build/C/man3/log10.3:95 build/C/man3/modf.3:109 build/C/man3/pow.3:322 build/C/man3/sin.3:114 build/C/man3/sinh.3:130 build/C/man3/sqrt.3:113 build/C/man3/tan.3:139 build/C/man3/tanh.3:106
470 "C99, POSIX.1-2001. The variant returning I<double> also conforms to SVr4, "
475 #: build/C/man3/acos.3:127
477 "B<asin>(3), B<atan>(3), B<atan2>(3), B<cacos>(3), B<cos>(3), B<sin>(3), "
482 #: build/C/man3/acosh.3:35
488 #: build/C/man3/acosh.3:38
489 msgid "acosh, acoshf, acoshl - inverse hyperbolic cosine function"
493 #: build/C/man3/acosh.3:43
495 msgid "B<double acosh(double >I<x>B<);>\n"
499 #: build/C/man3/acosh.3:45
501 msgid "B<float acoshf(float >I<x>B<);>\n"
505 #: build/C/man3/acosh.3:47
507 msgid "B<long double acoshl(long double >I<x>B<);>\n"
511 #: build/C/man3/acosh.3:58
516 #: build/C/man3/acosh.3:62 build/C/man3/asinh.3:62 build/C/man3/atanh.3:62 build/C/man3/cbrt.3:58 build/C/man3/expm1.3:57 build/C/man3/ilogb.3:55 build/C/man3/log1p.3:56 build/C/man3/logb.3:54 build/C/man3/nextafter.3:44 build/C/man3/rint.3:71
518 "_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\\ E<gt>=\\ 500 || "
519 "_XOPEN_SOURCE\\ &&\\ _XOPEN_SOURCE_EXTENDED || _ISOC99_SOURCE || "
520 "_POSIX_C_SOURCE\\ E<gt>=\\ 200112L;"
524 #: build/C/man3/acosh.3:69
525 msgid "B<acoshf>(), B<acoshl>():"
529 #: build/C/man3/acosh.3:84
531 "The B<acosh>() function calculates the inverse hyperbolic cosine of I<x>; "
532 "that is the value whose hyperbolic cosine is I<x>."
536 #: build/C/man3/acosh.3:87
537 msgid "On success, these functions return the inverse hyperbolic cosine of I<x>."
541 #: build/C/man3/acosh.3:99 build/C/man3/exp.3:87 build/C/man3/expm1.3:105 build/C/man3/log.3:90 build/C/man3/log1p.3:95 build/C/man3/sqrt.3:86 build/C/man3/tgamma.3:77
542 msgid "If I<x> is positive infinity, positive infinity is returned."
546 #: build/C/man3/acosh.3:105
548 "If I<x> is less than 1, a domain error occurs, and the functions return a "
553 #: build/C/man3/acosh.3:112
555 msgid "Domain error: I<x> is less than 1"
559 #: build/C/man3/acosh.3:133
560 msgid "B<asinh>(3), B<atanh>(3), B<cacosh>(3), B<cosh>(3), B<sinh>(3), B<tanh>(3)"
564 #: build/C/man3/asin.3:35
570 #: build/C/man3/asin.3:38
571 msgid "asin, asinf, asinl - arc sine function"
575 #: build/C/man3/asin.3:43
577 msgid "B<double asin(double >I<x>B<);>\n"
581 #: build/C/man3/asin.3:45
583 msgid "B<float asinf(float >I<x>B<);>\n"
587 #: build/C/man3/asin.3:47
589 msgid "B<long double asinl(long double >I<x>B<);>\n"
593 #: build/C/man3/asin.3:59
594 msgid "B<asinf>(), B<asinl>():"
598 #: build/C/man3/asin.3:74
600 "The B<asin>() function calculates the principal value of the arc sine of "
601 "I<x>; that is the value whose sine is I<x>."
605 #: build/C/man3/asin.3:78
607 "On success, these functions return the principal value of the arc sine of "
608 "I<x> in radians; the return value is in the range [-pi/2,\\ pi/2]."
612 #: build/C/man3/asin.3:87 build/C/man3/asinh.3:95 build/C/man3/atan.3:87 build/C/man3/atanh.3:95 build/C/man3/erf.3:95 build/C/man3/expm1.3:101 build/C/man3/scalbln.3:115 build/C/man3/sinh.3:90 build/C/man3/sqrt.3:82 build/C/man3/tanh.3:89
613 msgid "If I<x> is +0 (-0), +0 (-0) is returned."
617 #: build/C/man3/asin.3:125
619 "B<acos>(3), B<atan>(3), B<atan2>(3), B<casin>(3), B<cos>(3), B<sin>(3), "
624 #: build/C/man3/asinh.3:35
630 #: build/C/man3/asinh.3:38
631 msgid "asinh, asinhf, asinhl - inverse hyperbolic sine function"
635 #: build/C/man3/asinh.3:43
637 msgid "B<double asinh(double >I<x>B<);>\n"
641 #: build/C/man3/asinh.3:45
643 msgid "B<float asinhf(float >I<x>B<);>\n"
647 #: build/C/man3/asinh.3:47
649 msgid "B<long double asinhl(long double >I<x>B<);>\n"
653 #: build/C/man3/asinh.3:58
658 #: build/C/man3/asinh.3:69
659 msgid "B<asinhf>(), B<asinhl>():"
663 #: build/C/man3/asinh.3:84
665 "The B<asinh>() function calculates the inverse hyperbolic sine of I<x>; "
666 "that is the value whose hyperbolic sine is I<x>."
670 #: build/C/man3/asinh.3:87
671 msgid "On success, these functions return the inverse hyperbolic sine of I<x>."
675 #: build/C/man3/asinh.3:103 build/C/man3/ldexp.3:92 build/C/man3/scalbln.3:111 build/C/man3/sinh.3:95
677 "If I<x> is positive infinity (negative infinity), positive infinity "
678 "(negative infinity) is returned."
682 #: build/C/man3/asinh.3:105 build/C/man3/atan.3:96 build/C/man3/atan2.3:166 build/C/man3/cbrt.3:90 build/C/man3/copysign.3:92 build/C/man3/fabs.3:87 build/C/man3/fmax.3:56 build/C/man3/fmin.3:56 build/C/man3/frexp.3:108 build/C/man3/isgreater.3:125 build/C/man3/modf.3:95 build/C/man3/signbit.3:61 build/C/man3/tanh.3:100 build/C/man3/trunc.3:73
683 msgid "No errors occur."
687 #: build/C/man3/asinh.3:118
688 msgid "B<acosh>(3), B<atanh>(3), B<casinh>(3), B<cosh>(3), B<sinh>(3), B<tanh>(3)"
692 #: build/C/man3/atan.3:35
698 #: build/C/man3/atan.3:38
699 msgid "atan, atanf, atanl - arc tangent function"
703 #: build/C/man3/atan.3:43
705 msgid "B<double atan(double >I<x>B<);>\n"
709 #: build/C/man3/atan.3:45
711 msgid "B<float atanf(float >I<x>B<);>\n"
715 #: build/C/man3/atan.3:47
717 msgid "B<long double atanl( long double >I<x>B<);>\n"
721 #: build/C/man3/atan.3:59
722 msgid "B<atanf>(), B<atanl>():"
726 #: build/C/man3/atan.3:74
728 "The B<atan>() function calculates the principal value of the arc tangent of "
729 "I<x>; that is the value whose tangent is I<x>."
733 #: build/C/man3/atan.3:78
735 "On success, these functions return the principal value of the arc tangent of "
736 "I<x> in radians; the return value is in the range [-pi/2,\\ pi/2]."
740 #. POSIX.1-2001 documents an optional range error for subnormal x;
741 #. glibc 2.8 does not do this.
743 #: build/C/man3/atan.3:94
744 msgid "If I<x> is positive infinity (negative infinity), +pi/2 (-pi/2) is returned."
748 #: build/C/man3/atan.3:111
750 "B<acos>(3), B<asin>(3), B<atan2>(3), B<carg>(3), B<catan>(3), B<cos>(3), "
751 "B<sin>(3), B<tan>(3)"
755 #: build/C/man3/atan2.3:35
761 #: build/C/man3/atan2.3:38
762 msgid "atan2, atan2f, atan2l - arc tangent function of two variables"
766 #: build/C/man3/atan2.3:45
769 "B<double atan2(double >I<y>B<, double >I<x>B<);>\n"
770 "B<float atan2f(float >I<y>B<, float >I<x>B<);>\n"
771 "B<long double atan2l(long double >I<y>B<, long double >I<x>B<);>\n"
775 #: build/C/man3/atan2.3:57
776 msgid "B<atan2f>(), B<atan2l>():"
780 #: build/C/man3/atan2.3:72
782 "The B<atan2>() function calculates the principal value of the arc tangent "
783 "of I<y/x>, using the signs of the two arguments to determine the quadrant of "
788 #: build/C/man3/atan2.3:76
790 "On success, these functions return the principal value of the arc tangent of "
791 "I<y/x> in radians; the return value is in the range [-pi,\\ pi]."
795 #: build/C/man3/atan2.3:82
796 msgid "If I<y> is +0 (-0) and I<x> is less than 0, +pi (-pi) is returned."
800 #: build/C/man3/atan2.3:88
801 msgid "If I<y> is +0 (-0) and I<x> is greater than 0, +0 (-0) is returned."
805 #: build/C/man3/atan2.3:94
806 msgid "If I<y> is less than 0 and I<x> is +0 or -0, -pi/2 is returned."
810 #: build/C/man3/atan2.3:100
811 msgid "If I<y> is greater than 0 and I<x> is +0 or -0, pi/2 is returned."
817 #. is 0, a pole error shall not occur.
819 #: build/C/man3/atan2.3:111
820 msgid "If either I<x> or I<y> is NaN, a NaN is returned."
824 #. If the result underflows, a range error may occur and
826 #. should be returned.
828 #: build/C/man3/atan2.3:122
829 msgid "If I<y> is +0 (-0) and I<x> is -0, +pi (-pi) is returned."
833 #: build/C/man3/atan2.3:128
834 msgid "If I<y> is +0 (-0) and I<x> is +0, +0 (-0) is returned."
838 #: build/C/man3/atan2.3:134
840 "If I<y> is a finite value greater (less) than 0, and I<x> is negative "
841 "infinity, +pi (-pi) is returned."
845 #: build/C/man3/atan2.3:140
847 "If I<y> is a finite value greater (less) than 0, and I<x> is positive "
848 "infinity, +0 (-0) is returned."
852 #: build/C/man3/atan2.3:147
854 "If I<y> is positive infinity (negative infinity), and I<x> is finite, pi/2 "
855 "(-pi/2) is returned."
859 #: build/C/man3/atan2.3:153
861 "If I<y> is positive infinity (negative infinity) and I<x> is negative "
862 "infinity, +3*pi/4 (-3*pi/4) is returned."
867 #. If both arguments are 0, a domain error shall not occur.
869 #: build/C/man3/atan2.3:162
871 "If I<y> is positive infinity (negative infinity) and I<x> is positive "
872 "infinity, +pi/4 (-pi/4) is returned."
876 #: build/C/man3/atan2.3:180
878 "B<acos>(3), B<asin>(3), B<atan>(3), B<carg>(3), B<cos>(3), B<sin>(3), "
883 #: build/C/man3/atanh.3:35
889 #: build/C/man3/atanh.3:35 build/C/man3/cos.3:34 build/C/man3/lgamma.3:11 build/C/man3/sin.3:35 build/C/man3/tan.3:35
895 #: build/C/man3/atanh.3:38
896 msgid "atanh, atanhf, atanhl - inverse hyperbolic tangent function"
900 #: build/C/man3/atanh.3:43
902 msgid "B<double atanh(double >I<x>B<);>\n"
906 #: build/C/man3/atanh.3:45
908 msgid "B<float atanhf(float >I<x>B<);>\n"
912 #: build/C/man3/atanh.3:47
914 msgid "B<long double atanhl(long double >I<x>B<);>\n"
918 #: build/C/man3/atanh.3:58
923 #: build/C/man3/atanh.3:69
924 msgid "B<atanhf>(), B<atanhl>():"
928 #: build/C/man3/atanh.3:84
930 "The B<atanh>() function calculates the inverse hyperbolic tangent of I<x>; "
931 "that is the value whose hyperbolic tangent is I<x>."
935 #: build/C/man3/atanh.3:87
936 msgid "On success, these functions return the inverse hyperbolic tangent of I<x>."
940 #: build/C/man3/atanh.3:106
942 "If I<x> is +1 or -1, a pole error occurs, and the functions return "
943 "B<HUGE_VAL>, B<HUGE_VALF>, or B<HUGE_VALL>, respectively, with the "
944 "mathematically correct sign."
948 #. POSIX.1-2001 documents an optional range error for subnormal x;
949 #. glibc 2.8 does not do this.
951 #: build/C/man3/atanh.3:115
953 "If the absolute value of I<x> is greater than 1, a domain error occurs, and "
958 #: build/C/man3/atanh.3:122
960 msgid "Domain error: I<x> less than -1 or greater than +1"
964 #: build/C/man3/atanh.3:130
966 msgid "Pole error: I<x> is +1 or -1"
970 #: build/C/man3/atanh.3:139 build/C/man3/lgamma.3:146 build/C/man3/pow.3:300
972 "I<errno> is set to B<ERANGE> (but see BUGS). A divide-by-zero "
973 "floating-point exception (B<FE_DIVBYZERO>) is raised."
977 #: build/C/man3/atanh.3:145 build/C/man3/cos.3:110 build/C/man3/cosh.3:125 build/C/man3/expm1.3:139 build/C/man3/fenv.3:312 build/C/man3/fmod.3:152 build/C/man3/j0.3:156 build/C/man3/lgamma.3:165 build/C/man3/log.3:134 build/C/man3/nextafter.3:177 build/C/man3/pow.3:322 build/C/man3/remainder.3:204 build/C/man3/sin.3:114 build/C/man3/tan.3:139 build/C/man3/tgamma.3:171 build/C/man3/y0.3:229
982 #. Bug: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6759
983 #. This can be seen in sysdeps/ieee754/k_standard.c
985 #: build/C/man3/atanh.3:156
987 "In glibc 2.9 and earlier, when a pole error occurs, I<errno> as set to "
988 "B<EDOM> instead of the POSIX-mandated B<ERANGE>. Since version 2.10, glibc "
989 "does the right thing."
993 #: build/C/man3/atanh.3:163
994 msgid "B<acosh>(3), B<asinh>(3), B<catanh>(3), B<cosh>(3), B<sinh>(3), B<tanh>(3)"
998 #: build/C/man3/cbrt.3:30
1004 #: build/C/man3/cbrt.3:33
1005 msgid "cbrt, cbrtf, cbrtl - cube root function"
1009 #: build/C/man3/cbrt.3:38
1011 msgid "B<double cbrt(double >I<x>B<);>\n"
1015 #: build/C/man3/cbrt.3:40
1017 msgid "B<float cbrtf(float >I<x>B<);>\n"
1021 #: build/C/man3/cbrt.3:42
1023 msgid "B<long double cbrtl(long double >I<x>B<);>\n"
1027 #: build/C/man3/cbrt.3:53
1032 #: build/C/man3/cbrt.3:64
1033 msgid "B<cbrtf>(), B<cbrtl>():"
1037 #: build/C/man3/cbrt.3:67
1039 "_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\\ E<gt>=\\ 600 || "
1040 "_ISOC99_SOURCE || _POSIX_C_SOUCE\\ E<gt>=\\ 200112L;"
1044 #: build/C/man3/cbrt.3:79
1046 "The B<cbrt>() function returns the (real) cube root of I<x>. This function "
1047 "cannot fail; every representable real value has a representable real cube "
1052 #: build/C/man3/cbrt.3:82
1053 msgid "These functions return the cube root of I<x>."
1057 #: build/C/man3/cbrt.3:88
1059 "If I<x> is +0, -0, positive infinity, negative infinity, or NaN, I<x> is "
1064 #: build/C/man3/cbrt.3:94 build/C/man3/expm1.3:139 build/C/man3/fdim.3:83 build/C/man3/fma.3:158 build/C/man3/fmax.3:60 build/C/man3/fmin.3:60 build/C/man3/ilogb.3:148 build/C/man3/isgreater.3:127 build/C/man3/log1p.3:145 build/C/man3/logb.3:145 build/C/man3/lrint.3:111 build/C/man3/lround.3:114 build/C/man3/remquo.3:126 build/C/man3/rint.3:118 build/C/man3/round.3:98 build/C/man3/scalbln.3:173 build/C/man3/tgamma.3:164 build/C/man3/trunc.3:85
1065 msgid "C99, POSIX.1-2001."
1069 #: build/C/man3/cbrt.3:97
1070 msgid "B<pow>(3), B<sqrt>(3)"
1074 #: build/C/man3/ceil.3:27
1080 #: build/C/man3/ceil.3:31
1082 "ceil, ceilf, ceill - ceiling function: smallest integral value not less than "
1087 #: build/C/man3/ceil.3:36
1089 msgid "B<double ceil(double >I<x>B<);>\n"
1093 #: build/C/man3/ceil.3:38
1095 msgid "B<float ceilf(float >I<x>B<);>\n"
1099 #: build/C/man3/ceil.3:40
1101 msgid "B<long double ceill(long double >I<x>B<);>\n"
1105 #: build/C/man3/ceil.3:52
1106 msgid "B<ceilf>(), B<ceill>():"
1110 #: build/C/man3/ceil.3:63
1112 "These functions return the smallest integral value that is not less than "
1117 #: build/C/man3/ceil.3:69
1118 msgid "For example, I<ceil(0.5)> is 1.0, and I<ceil(-0.5)> is 0.0."
1122 #: build/C/man3/ceil.3:72
1123 msgid "These functions return the ceiling of I<x>."
1127 #: build/C/man3/ceil.3:78 build/C/man3/rint.3:113 build/C/man3/round.3:83
1128 msgid "If I<x> is integral, +0, -0, NaN, or infinite, I<x> itself is returned."
1132 #: build/C/man3/ceil.3:81 build/C/man3/floor.3:80 build/C/man3/rint.3:116 build/C/man3/round.3:86
1134 "No errors occur. POSIX.1-2001 documents a range error for overflows, but "
1139 #: build/C/man3/ceil.3:89
1140 msgid "The B<ceil>(), B<ceilf>(), and B<ceill>() functions are thread-safe."
1144 #: build/C/man3/ceil.3:111 build/C/man3/floor.3:102 build/C/man3/rint.3:133
1146 "SUSv2 and POSIX.1-2001 contain text about overflow (which might set I<errno> "
1147 "to B<ERANGE>, or raise an B<FE_OVERFLOW> exception). In practice, the "
1148 "result cannot overflow on any current machine, so this error-handling stuff "
1149 "is just nonsense. (More precisely, overflow can happen only when the "
1150 "maximum value of the exponent is smaller than the number of mantissa bits. "
1151 "For the IEEE-754 standard 32-bit and 64-bit floating-point numbers the "
1152 "maximum value of the exponent is 128 (respectively, 1024), and the number of "
1153 "mantissa bits is 24 (respectively, 53).)"
1157 #: build/C/man3/ceil.3:120 build/C/man3/trunc.3:94
1159 "The integral value returned by these functions may be too large to store in "
1160 "an integer type (I<int>, I<long>, etc.). To avoid an overflow, which will "
1161 "produce undefined results, an application should perform a range check on "
1162 "the returned value before assigning it to an integer type."
1166 #: build/C/man3/ceil.3:127
1168 "B<floor>(3), B<lrint>(3), B<nearbyint>(3), B<rint>(3), B<round>(3), "
1173 #: build/C/man3/copysign.3:31
1179 #: build/C/man3/copysign.3:31
1185 #: build/C/man3/copysign.3:34
1186 msgid "copysign, copysignf, copysignl - copy sign of a number"
1190 #: build/C/man3/copysign.3:39
1192 msgid "B<double copysign(double >I<x>B<, double >I<y>B<);>\n"
1196 #: build/C/man3/copysign.3:41
1198 msgid "B<float copysignf(float >I<x>B<, float >I<y>B<);>\n"
1202 #: build/C/man3/copysign.3:43
1204 msgid "B<long double copysignl(long double >I<x>B<, long double >I<y>B<);>\n"
1208 #: build/C/man3/copysign.3:56
1209 msgid "B<copysign>(), B<copysignf>(), B<copysignl>():"
1213 #: build/C/man3/copysign.3:59
1215 "_SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE\\ E<gt>=\\ 600 || "
1216 "_ISOC99_SOURCE || _POSIX_C_SOURCE\\ E<gt>=\\ 200112L;"
1220 #: build/C/man3/copysign.3:72
1222 "The B<copysign>() functions return a value whose absolute value matches "
1223 "that of I<x>, but whose sign bit matches that of I<y>."
1227 #: build/C/man3/copysign.3:78
1229 "For example, I<copysign(42.0,\\ -1.0)> and I<copysign(-42.0, -1.0)> both "
1234 #: build/C/man3/copysign.3:83
1236 "On success, these functions return a value whose magnitude is taken from "
1237 "I<x> and whose sign is taken from I<y>."
1241 #: build/C/man3/copysign.3:90
1242 msgid "If I<x> is a NaN, a NaN with the sign bit of I<y> is returned."
1246 #: build/C/man3/copysign.3:97 build/C/man3/nextafter.3:177 build/C/man3/signbit.3:70
1248 "C99, POSIX.1-2001. This function is defined in IEC 559 (and the appendix "
1249 "with recommended functions in IEEE 754/IEEE 854)."
1253 #: build/C/man3/copysign.3:102
1255 "On architectures where the floating-point formats are not IEEE 754 "
1256 "compliant, the B<copysign>() functions may treat a negative zero as "
1261 #: build/C/man3/copysign.3:104
1262 msgid "B<signbit>(3)"
1266 #: build/C/man3/cos.3:34
1272 #: build/C/man3/cos.3:37
1273 msgid "cos, cosf, cosl - cosine function"
1277 #: build/C/man3/cos.3:42
1279 msgid "B<double cos(double >I<x>B<);>\n"
1283 #: build/C/man3/cos.3:44
1285 msgid "B<float cosf(float >I<x>B<);>\n"
1289 #: build/C/man3/cos.3:46
1291 msgid "B<long double cosl(long double >I<x>B<);>\n"
1295 #: build/C/man3/cos.3:58
1296 msgid "B<cosf>(), B<cosl>():"
1300 #: build/C/man3/cos.3:75
1302 "The B<cos>() function returns the cosine of I<x>, where I<x> is given in "
1307 #: build/C/man3/cos.3:78
1308 msgid "On success, these functions return the cosine of I<x>."
1312 #: build/C/man3/cos.3:95 build/C/man3/fmod.3:127 build/C/man3/ilogb.3:130 build/C/man3/sin.3:99 build/C/man3/sincos.3:59 build/C/man3/tan.3:114
1314 msgid "Domain error: I<x> is an infinity"
1318 #: build/C/man3/cos.3:104 build/C/man3/fmod.3:136 build/C/man3/sin.3:108 build/C/man3/tan.3:123
1320 "I<errno> is set to B<EDOM> (but see BUGS). An invalid floating-point "
1321 "exception (B<FE_INVALID>) is raised."
1325 #: build/C/man3/cos.3:110 build/C/man3/cosh.3:125 build/C/man3/erf.3:132 build/C/man3/erfc.3:128 build/C/man3/hypot.3:164 build/C/man3/log2.3:97
1327 "C99, POSIX.1-2001. The variant returning I<double> also conforms to SVr4, "
1331 #. http://sourceware.org/bugzilla/show_bug.cgi?id=6782
1333 #: build/C/man3/cos.3:117 build/C/man3/sin.3:121 build/C/man3/tan.3:146
1335 "Before version 2.10, the glibc implementation did not set I<errno> to "
1336 "B<EDOM> when a domain error occurred."
1340 #: build/C/man3/cos.3:126
1342 "B<acos>(3), B<asin>(3), B<atan>(3), B<atan2>(3), B<ccos>(3), B<sin>(3), "
1343 "B<sincos>(3), B<tan>(3)"
1347 #: build/C/man3/cosh.3:36
1353 #: build/C/man3/cosh.3:39
1354 msgid "cosh, coshf, coshl - hyperbolic cosine function"
1358 #: build/C/man3/cosh.3:44
1360 msgid "B<double cosh(double >I<x>B<);>\n"
1364 #: build/C/man3/cosh.3:46
1366 msgid "B<float coshf(float >I<x>B<);>\n"
1370 #: build/C/man3/cosh.3:48
1372 msgid "B<long double coshl(long double >I<x>B<);>\n"
1376 #: build/C/man3/cosh.3:60
1377 msgid "B<coshf>(), B<coshl>():"
1381 #: build/C/man3/cosh.3:75
1383 "The B<cosh>() function returns the hyperbolic cosine of I<x>, which is "
1384 "defined mathematically as:"
1388 #: build/C/man3/cosh.3:78
1390 msgid " cosh(x) = (exp(x) + exp(-x)) / 2\n"
1394 #: build/C/man3/cosh.3:82
1395 msgid "On success, these functions return the hyperbolic cosine of I<x>."
1399 #: build/C/man3/cosh.3:90 build/C/man3/erfc.3:83
1400 msgid "If I<x> is +0 or -0, 1 is returned."
1404 #: build/C/man3/cosh.3:95 build/C/man3/lgamma.3:109
1406 "If I<x> is positive infinity or negative infinity, positive infinity is "
1411 #: build/C/man3/cosh.3:104 build/C/man3/exp.3:105
1413 "If the result overflows, a range error occurs, and the functions return "
1414 "+B<HUGE_VAL>, +B<HUGE_VALF>, or +B<HUGE_VALL>, respectively."
1418 #: build/C/man3/cosh.3:111 build/C/man3/fdim.3:66 build/C/man3/fma.3:133 build/C/man3/hypot.3:135 build/C/man3/lgamma.3:146 build/C/man3/nextafter.3:150 build/C/man3/sinh.3:116 build/C/man3/tan.3:123 build/C/man3/tgamma.3:132 build/C/man3/y0.3:210
1420 msgid "Range error: result overflow"
1424 #: build/C/man3/cosh.3:119 build/C/man3/exp.3:120 build/C/man3/hypot.3:143 build/C/man3/ldexp.3:121 build/C/man3/lgamma.3:156 build/C/man3/pow.3:308 build/C/man3/sinh.3:124 build/C/man3/tgamma.3:140
1426 "I<errno> is set to B<ERANGE>. An overflow floating-point exception "
1427 "(B<FE_OVERFLOW>) is raised."
1431 #: build/C/man3/cosh.3:130
1433 "In glibc version 2.3.4 and earlier, an overflow floating-point "
1434 "(B<FE_OVERFLOW>) exception is not raised when an overflow occurs."
1438 #: build/C/man3/cosh.3:137
1439 msgid "B<acosh>(3), B<asinh>(3), B<atanh>(3), B<ccos>(3), B<sinh>(3), B<tanh>(3)"
1443 #: build/C/man3/div.3:34
1449 #: build/C/man3/div.3:34
1455 #: build/C/man3/div.3:38
1457 "div, ldiv, lldiv, imaxdiv - compute quotient and remainder of an integer "
1462 #: build/C/man3/div.3:43
1464 msgid "B<div_t div(int >I<numerator>B<, int >I<denominator>B<);>\n"
1468 #: build/C/man3/div.3:45
1470 msgid "B<ldiv_t ldiv(long >I<numerator>B<, long >I<denominator>B<);>\n"
1474 #: build/C/man3/div.3:47
1476 msgid "B<lldiv_t lldiv(long long >I<numerator>B<, long long >I<denominator>B<);>\n"
1480 #: build/C/man3/div.3:51
1483 "B<imaxdiv_t imaxdiv(intmax_t >I<numerator>B<, intmax_t "
1484 ">I<denominator>B<);>\n"
1488 #: build/C/man3/div.3:60
1493 #: build/C/man3/div.3:78
1495 "The B<div>() function computes the value I<numerator>/I<denominator> and "
1496 "returns the quotient and remainder in a structure named I<div_t> that "
1497 "contains two integer members (in unspecified order) named I<quot> and "
1498 "I<rem>. The quotient is rounded toward zero. The result satisfies "
1499 "I<quot>*I<denominator>+I<rem> = I<numerator>."
1503 #: build/C/man3/div.3:89
1505 "The B<ldiv>(), B<lldiv>(), and B<imaxdiv>() functions do the same, dividing "
1506 "numbers of the indicated type and returning the result in a structure of the "
1507 "indicated name, in all cases with fields I<quot> and I<rem> of the same type "
1508 "as the function arguments."
1512 #: build/C/man3/div.3:91
1513 msgid "The I<div_t> (etc.) structure."
1517 #: build/C/man3/div.3:98
1519 "SVr4, 4.3BSD, C89. C99. The functions B<lldiv>() and B<imaxdiv>() were "
1524 #: build/C/man3/div.3:98 build/C/man3/frexp.3:114 build/C/man3/matherr.3:275 build/C/man3/remainder.3:213
1530 #: build/C/man3/div.3:100
1535 #: build/C/man3/div.3:103
1537 msgid " div_t q = div(-5, 3);\n"
1541 #: build/C/man3/div.3:106
1542 msgid "the values I<q.quot> and I<q.rem> are -1 and -2, respectively."
1546 #: build/C/man3/div.3:109
1547 msgid "B<abs>(3), B<remainder>(3)"
1551 #: build/C/man3/erf.3:35
1557 #: build/C/man3/erf.3:38
1558 msgid "erf, erff, erfl, - error function"
1562 #: build/C/man3/erf.3:45
1565 "B<double erf(double >I<x>B<);>\n"
1566 "B<float erff(float >I<x>B<);>\n"
1567 "B<long double erfl(long double >I<x>B<);>\n"
1571 #: build/C/man3/erf.3:56
1576 #: build/C/man3/erf.3:59 build/C/man3/erfc.3:50 build/C/man3/fpclassify.3:53 build/C/man3/hypot.3:59 build/C/man3/lgamma.3:46
1578 "_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE || _ISOC99_SOURCE || "
1579 "_POSIX_C_SOURCE\\ E<gt>=\\ 200112L;"
1583 #: build/C/man3/erf.3:66
1584 msgid "B<erff>(), B<erfl>():"
1588 #: build/C/man3/erf.3:81
1589 msgid "The B<erf>() function returns the error function of I<x>, defined as"
1593 #: build/C/man3/erf.3:81
1595 msgid " erf(x) = 2/sqrt(pi)* integral from 0 to x of exp(-t*t) dt"
1599 #: build/C/man3/erf.3:87
1601 "On success, these functions return the error function of I<x>, a value in "
1602 "the range [-1,\\ 1]."
1606 #. POSIX.1-2001 documents an optional range error (underflow)
1608 #. glibc 2.8 does not do this.
1610 #: build/C/man3/erf.3:100 build/C/man3/tanh.3:98
1611 msgid "If I<x> is positive infinity (negative infinity), +1 (-1) is returned."
1615 #: build/C/man3/erf.3:106
1617 "If I<x> is subnormal, a range error occurs, and the return value is "
1622 #: build/C/man3/erf.3:113
1624 msgid "Range error: result underflow (I<x> is subnormal)"
1627 #. e.g., tgamma(-172.5) on glibc 2.8/x86-32
1632 #: build/C/man3/erf.3:121 build/C/man3/erfc.3:117 build/C/man3/fma.3:149 build/C/man3/hypot.3:151 build/C/man3/nextafter.3:168 build/C/man3/scalb.3:171 build/C/man3/scalbln.3:153 build/C/man3/tgamma.3:152
1633 msgid "An underflow floating-point exception (B<FE_UNDERFLOW>) is raised."
1636 #. FIXME . Is it intentional that these functions do not set errno?
1637 #. sin() and cos() also don't set errno; bugs have been raised for
1640 #: build/C/man3/erf.3:126 build/C/man3/erfc.3:122 build/C/man3/fdim.3:79 build/C/man3/fma.3:154 build/C/man3/log1p.3:142 build/C/man3/logb.3:143 build/C/man3/lrint.3:107 build/C/man3/lround.3:110 build/C/man3/nextafter.3:173 build/C/man3/remquo.3:122 build/C/man3/scalb.3:177 build/C/man3/scalbln.3:158 build/C/man3/sincos.3:73
1641 msgid "These functions do not set I<errno>."
1645 #: build/C/man3/erf.3:136
1646 msgid "B<cerf>(3), B<erfc>(3), B<exp>(3)"
1650 #: build/C/man3/erfc.3:26
1656 #: build/C/man3/erfc.3:29
1657 msgid "erfc, erfcf, erfcl - complementary error function"
1661 #: build/C/man3/erfc.3:36
1664 "B<double erfc(double >I<x>B<);>\n"
1665 "B<float erfcf(float >I<x>B<);>\n"
1666 "B<long double erfcl(long double >I<x>B<);>\n"
1670 #: build/C/man3/erfc.3:47
1675 #: build/C/man3/erfc.3:57
1676 msgid "B<erfcf>(), B<erfcl>():"
1680 #: build/C/man3/erfc.3:60
1682 "_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\\ E<gt>=\\ 600|| _ISOC99_SOURCE "
1683 "|| _POSIX_C_SOURCE\\ E<gt>=\\ 200112L;"
1687 #: build/C/man3/erfc.3:71
1689 "The B<erfc>() function returns the complementary error function of I<x>, "
1690 "that is, 1.0 - erf(x)."
1694 #: build/C/man3/erfc.3:75
1696 "On success, these functions return the complementary error function of I<x>, "
1697 "a value in the range [0,2]."
1701 #: build/C/man3/erfc.3:88
1702 msgid "If I<x> is positive infinity, +0 is returned."
1706 #: build/C/man3/erfc.3:93
1707 msgid "If I<x> is negative infinity, +2 is returned."
1711 #: build/C/man3/erfc.3:96
1713 "If the function result underflows and produces an unrepresentable value, the "
1714 "return value is 0.0."
1717 #. e.g., erfc(27) on x86-32
1719 #: build/C/man3/erfc.3:102
1721 "If the function result underflows but produces a representable (i.e., "
1722 "subnormal) value, that value is returned, and a range error occurs."
1726 #: build/C/man3/erfc.3:109
1728 msgid "Range error: result underflow (result is subnormal)"
1732 #: build/C/man3/erfc.3:135
1734 "The B<erfc>() functions are provided to avoid the loss accuracy that would "
1735 "occur for the calculation 1-erf(x) for large values of I<x> (for which the "
1736 "value of erf(x) approaches 1)."
1740 #: build/C/man3/erfc.3:139
1741 msgid "B<cerf>(3), B<erf>(3), B<exp>(3)"
1745 #: build/C/man3/exp.3:36
1751 #: build/C/man3/exp.3:39
1752 msgid "exp, expf, expl - base-e exponential function"
1756 #: build/C/man3/exp.3:44
1758 msgid "B<double exp(double >I<x>B<);>\n"
1762 #: build/C/man3/exp.3:46
1764 msgid "B<float expf(float >I<x>B<);>\n"
1768 #: build/C/man3/exp.3:48
1770 msgid "B<long double expl(long double >I<x>B<);>\n"
1774 #: build/C/man3/exp.3:60
1775 msgid "B<expf>(), B<expl>():"
1779 #: build/C/man3/exp.3:74
1781 "The B<exp>() function returns the value of e (the base of natural "
1782 "logarithms) raised to the power of I<x>."
1786 #: build/C/man3/exp.3:77
1787 msgid "On success, these functions return the exponential value of I<x>."
1791 #: build/C/man3/exp.3:92
1792 msgid "If I<x> is negative infinity, +0 is returned."
1796 #: build/C/man3/exp.3:96 build/C/man3/ldexp.3:96
1797 msgid "If the result underflows, a range error occurs, and zero is returned."
1801 #: build/C/man3/exp.3:112 build/C/man3/expm1.3:124 build/C/man3/ldexp.3:113 build/C/man3/scalb.3:155 build/C/man3/scalbln.3:137
1803 msgid "Range error, overflow"
1807 #: build/C/man3/exp.3:120 build/C/man3/ldexp.3:121 build/C/man3/scalb.3:163 build/C/man3/scalbln.3:145
1809 msgid "Range error, underflow"
1813 #: build/C/man3/exp.3:128 build/C/man3/ldexp.3:129 build/C/man3/pow.3:316
1815 "I<errno> is set to B<ERANGE>. An underflow floating-point exception "
1816 "(B<FE_UNDERFLOW>) is raised."
1820 #: build/C/man3/exp.3:140
1821 msgid "B<cbrt>(3), B<cexp>(3), B<exp10>(3), B<exp2>(3), B<sqrt>(3)"
1825 #: build/C/man3/exp10.3:35
1831 #: build/C/man3/exp10.3:35 build/C/man7/math_error.7:26 build/C/man3/pow10.3:25 build/C/man3/sincos.3:9
1837 #: build/C/man3/exp10.3:38
1838 msgid "exp10, exp10f, exp10l - base-10 exponential function"
1842 #: build/C/man3/exp10.3:41 build/C/man3/fenv.3:290
1844 msgid "B<#define _GNU_SOURCE> /* See feature_test_macros(7) */\n"
1848 #: build/C/man3/exp10.3:45
1850 msgid "B<double exp10(double >I<x>B<);>\n"
1854 #: build/C/man3/exp10.3:47
1856 msgid "B<float exp10f(float >I<x>B<);>\n"
1860 #: build/C/man3/exp10.3:49
1862 msgid "B<long double exp10l(long double >I<x>B<);>\n"
1866 #: build/C/man3/exp10.3:58
1868 "The B<exp10>() function returns the value of 10 raised to the power of "
1873 #: build/C/man3/exp10.3:61
1874 msgid "On success, these functions return the base-10 exponential value of I<x>."
1878 #: build/C/man3/exp10.3:65 build/C/man3/exp2.3:81
1880 "For various special cases, including the handling of infinity and NaN, as "
1881 "well as overflows and underflows, see B<exp>(3)."
1885 #: build/C/man3/exp10.3:75 build/C/man3/exp2.3:89
1887 "For a discussion of the errors that can occur for these functions, see "
1892 #: build/C/man3/exp10.3:75 build/C/man3/exp2.3:89 build/C/man3/fdim.3:79 build/C/man3/fenv.3:263 build/C/man3/fma.3:154 build/C/man3/fmax.3:56 build/C/man3/fmin.3:56 build/C/man3/log2.3:89 build/C/man3/lrint.3:107 build/C/man3/lround.3:110 build/C/man3/nan.3:73 build/C/man3/pow10.3:47 build/C/man3/remquo.3:122 build/C/man3/round.3:86 build/C/man3/scalbln.3:158 build/C/man3/sincos.3:73 build/C/man3/tgamma.3:160 build/C/man3/trunc.3:73
1898 #: build/C/man3/exp10.3:77 build/C/man3/exp2.3:91 build/C/man3/fdim.3:81 build/C/man3/fenv.3:265 build/C/man3/fma.3:156 build/C/man3/fmax.3:58 build/C/man3/fmin.3:58 build/C/man3/log2.3:91 build/C/man3/lrint.3:109 build/C/man3/lround.3:112 build/C/man3/nan.3:75 build/C/man3/pow10.3:49 build/C/man3/remquo.3:124 build/C/man3/round.3:88 build/C/man3/scalbln.3:160 build/C/man3/sincos.3:75 build/C/man3/tgamma.3:162 build/C/man3/trunc.3:75
1899 msgid "These functions first appeared in glibc in version 2.1."
1903 #: build/C/man3/exp10.3:79
1904 msgid "These functions are GNU extensions."
1908 #: build/C/man3/exp10.3:85
1909 msgid "B<cbrt>(3), B<exp>(3), B<exp2>(3), B<log10>(3), B<sqrt>(3)"
1913 #: build/C/man3/exp2.3:36
1919 #: build/C/man3/exp2.3:39
1920 msgid "exp2, exp2f, exp2l - base-2 exponential function"
1924 #: build/C/man3/exp2.3:44
1926 msgid "B<double exp2(double >I<x>B<);>\n"
1930 #: build/C/man3/exp2.3:46
1932 msgid "B<float exp2f(float >I<x>B<);>\n"
1936 #: build/C/man3/exp2.3:48
1938 msgid "B<long double exp2l(long double >I<x>B<);>\n"
1942 #: build/C/man3/exp2.3:61
1943 msgid "B<exp2>(), B<exp2f>(), B<exp2l>():"
1947 #: build/C/man3/exp2.3:74
1948 msgid "The B<exp2>() function returns the value of 2 raised to the power of I<x>."
1952 #: build/C/man3/exp2.3:77
1953 msgid "On success, these functions return the base-2 exponential value of I<x>."
1957 #: build/C/man3/exp2.3:103
1958 msgid "B<cbrt>(3), B<cexp2>(3), B<exp>(3), B<exp10>(3), B<sqrt>(3)"
1962 #: build/C/man3/expm1.3:30
1968 #: build/C/man3/expm1.3:30 build/C/man3/log2.3:36 build/C/man3/pow.3:35
1974 #: build/C/man3/expm1.3:33
1975 msgid "expm1, expm1f, expm1l - exponential minus 1"
1979 #: build/C/man3/expm1.3:38
1981 msgid "B<double expm1(double >I<x>B<);>\n"
1985 #: build/C/man3/expm1.3:40
1987 msgid "B<float expm1f(float >I<x>B<);>\n"
1991 #: build/C/man3/expm1.3:42
1993 msgid "B<long double expm1l(long double >I<x>B<);>\n"
1997 #: build/C/man3/expm1.3:53
2002 #: build/C/man3/expm1.3:64
2003 msgid "B<expm1f>(), B<expm1l>():"
2007 #: build/C/man3/expm1.3:75
2008 msgid "I<expm1(x)> returns a value equivalent to"
2012 #: build/C/man3/expm1.3:78
2014 msgid " exp(x) - 1\n"
2018 #: build/C/man3/expm1.3:88
2020 "It is computed in a way that is accurate even if the value of I<x> is near "
2021 "zero\\(ema case where I<exp(x) - 1> would be inaccurate due to subtraction "
2022 "of two numbers that are nearly equal."
2026 #: build/C/man3/expm1.3:91
2027 msgid "On success, these functions return I<exp(x)\\ -\\ 1>."
2031 #: build/C/man3/expm1.3:109
2032 msgid "If I<x> is negative infinity, -1 is returned."
2036 #: build/C/man3/expm1.3:117
2038 "If the result overflows, a range error occurs, and the functions return "
2039 "-B<HUGE_VAL>, -B<HUGE_VALF>, or -B<HUGE_VALL>, respectively."
2043 #. POSIX.1 specifies an optional range error (underflow) if
2044 #. x is subnormal. Glibc does not implement this.
2046 #: build/C/man3/expm1.3:136
2048 "I<errno> is set to B<ERANGE> (but see BUGS). An overflow floating-point "
2049 "exception (B<FE_OVERFLOW>) is raised."
2053 #. Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6778
2055 #: build/C/man3/expm1.3:147
2057 "For some large negative I<x> values (where the function result approaches "
2058 "-1), B<expm1>() raises a bogus underflow floating-point exception."
2062 #. Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6814
2063 #. e.g., expm1(1e5) through expm1(1.00199970127e5),
2064 #. but not expm1(1.00199970128e5) and beyond.
2066 #: build/C/man3/expm1.3:158
2068 "For some large positive I<x> values, B<expm1>() raises a bogus invalid "
2069 "floating-point exception in addition to the expected overflow exception, and "
2070 "returns a NaN instead of positive infinity."
2073 #. It looks like the fix was in 2.11, or possibly 2.12.
2074 #. I have no test system for 2.11, but 2.12 passes.
2075 #. From the source (sysdeps/i386/fpu/s_expm1.S) it looks
2076 #. like the changes were in 2.11.
2077 #. http://sources.redhat.com/bugzilla/show_bug.cgi?id=6788
2079 #: build/C/man3/expm1.3:170
2081 "Before version 2.11, the glibc implementation did not set I<errno> to "
2082 "B<ERANGE> when a range error occurred."
2086 #: build/C/man3/expm1.3:174
2087 msgid "B<exp>(3), B<log>(3), B<log1p>(3)"
2091 #: build/C/man3/fabs.3:32
2097 #: build/C/man3/fabs.3:35
2098 msgid "fabs, fabsf, fabsl - absolute value of floating-point number"
2102 #: build/C/man3/fabs.3:40
2104 msgid "B<double fabs(double >I<x>B<);>\n"
2108 #: build/C/man3/fabs.3:42
2110 msgid "B<float fabsf(float >I<x>B<);>\n"
2114 #: build/C/man3/fabs.3:44
2116 msgid "B<long double fabsl(long double >I<x>B<);>\n"
2120 #: build/C/man3/fabs.3:56
2121 msgid "B<fabsf>(), B<fabsl>():"
2125 #: build/C/man3/fabs.3:70
2127 "The B<fabs>() functions return the absolute value of the floating-point "
2132 #: build/C/man3/fabs.3:73
2133 msgid "These functions return the absolute value of I<x>."
2137 #: build/C/man3/fabs.3:81
2138 msgid "If I<x> is -0, +0 is returned."
2142 #: build/C/man3/fabs.3:85
2144 "If I<x> is negative infinity or positive infinity, positive infinity is "
2149 #: build/C/man3/fabs.3:100
2150 msgid "B<abs>(3), B<cabs>(3), B<ceil>(3), B<floor>(3), B<labs>(3), B<rint>(3)"
2154 #: build/C/man3/fdim.3:9
2160 #: build/C/man3/fdim.3:12
2161 msgid "fdim, fdimf, fdiml - positive difference"
2165 #: build/C/man3/fdim.3:14 build/C/man3/fmax.3:14 build/C/man3/fmin.3:14 build/C/man3/gamma.3:14 build/C/man3/ilogb.3:34 build/C/man3/logb.3:34 build/C/man3/nan.3:16 build/C/man3/nextafter.3:17 build/C/man3/scalb.3:33 build/C/man3/scalbln.3:33 build/C/man3/signbit.3:16 build/C/man3/significand.3:15 build/C/man3/tgamma.3:18
2166 msgid "B<#include E<lt>math.hE<gt>>"
2170 #: build/C/man3/fdim.3:16
2171 msgid "B<double fdim(double >I<x>B<, double >I<y>B<);>"
2175 #: build/C/man3/fdim.3:18
2176 msgid "B<float fdimf(float >I<x>B<, float >I<y>B<);>"
2180 #: build/C/man3/fdim.3:20
2181 msgid "B<long double fdiml(long double >I<x>B<, long double >I<y>B<);>"
2185 #: build/C/man3/fdim.3:31
2186 msgid "B<fdimf>(), B<fdiml>():"
2190 #: build/C/man3/fdim.3:42
2192 "These functions return the positive difference, max(I<x>-I<y>,0), between "
2197 #: build/C/man3/fdim.3:44
2198 msgid "On success, these functions return the positive difference."
2202 #: build/C/man3/fdim.3:50 build/C/man3/fma.3:63 build/C/man3/fmod.3:102 build/C/man3/nextafter.3:121 build/C/man3/remainder.3:130 build/C/man3/remquo.3:83
2203 msgid "If I<x> or I<y> is a NaN, a NaN is returned."
2207 #: build/C/man3/fdim.3:59 build/C/man3/hypot.3:122
2209 "If the result overflows, a range error occurs, and the functions return "
2210 "B<HUGE_VAL>, B<HUGE_VALF>, or B<HUGE_VALL>, respectively."
2213 #. Unable to test this case, since the best approximation of
2214 #. pi/2 in double precision only yields a tan() value of 1.633e16.
2219 #: build/C/man3/fdim.3:74 build/C/man3/fma.3:141 build/C/man3/nextafter.3:159 build/C/man3/scalb.3:163 build/C/man3/scalbln.3:145 build/C/man3/tan.3:133
2220 msgid "An overflow floating-point exception (B<FE_OVERFLOW>) is raised."
2224 #: build/C/man3/fdim.3:85 build/C/man3/fmin.3:62
2229 #: build/C/man3/fenv.3:27
2235 #: build/C/man3/fenv.3:27
2241 #: build/C/man3/fenv.3:27 build/C/man7/math_error.7:26 build/C/man3/matherr.3:27
2247 #: build/C/man3/fenv.3:33
2249 "feclearexcept, fegetexceptflag, feraiseexcept, fesetexceptflag, "
2250 "fetestexcept, fegetenv, fegetround, feholdexcept, fesetround, fesetenv, "
2251 "feupdateenv, feenableexcept, fedisableexcept, fegetexcept - floating-point "
2252 "rounding and exception handling"
2256 #: build/C/man3/fenv.3:36 build/C/man3/fenv.3:292
2258 msgid "B<#include E<lt>fenv.hE<gt>>\n"
2262 #: build/C/man3/fenv.3:38
2264 msgid "B<int feclearexcept(int >I<excepts>B<);>\n"
2268 #: build/C/man3/fenv.3:40
2270 msgid "B<int fegetexceptflag(fexcept_t *>I<flagp>B<, int >I<excepts>B<);>\n"
2274 #: build/C/man3/fenv.3:42
2276 msgid "B<int feraiseexcept(int >I<excepts>B<);>\n"
2280 #: build/C/man3/fenv.3:44
2282 msgid "B<int fesetexceptflag(const fexcept_t *>I<flagp>B<, int >I<excepts>B<);>\n"
2286 #: build/C/man3/fenv.3:46
2288 msgid "B<int fetestexcept(int >I<excepts>B<);>\n"
2292 #: build/C/man3/fenv.3:48
2294 msgid "B<int fegetround(void);>\n"
2298 #: build/C/man3/fenv.3:50
2300 msgid "B<int fesetround(int >I<rounding_mode>B<);>\n"
2304 #: build/C/man3/fenv.3:52
2306 msgid "B<int fegetenv(fenv_t *>I<envp>B<);>\n"
2310 #: build/C/man3/fenv.3:54
2312 msgid "B<int feholdexcept(fenv_t *>I<envp>B<);>\n"
2316 #: build/C/man3/fenv.3:56
2318 msgid "B<int fesetenv(const fenv_t *>I<envp>B<);>\n"
2322 #: build/C/man3/fenv.3:58
2324 msgid "B<int feupdateenv(const fenv_t *>I<envp>B<);>\n"
2328 #: build/C/man3/fenv.3:64
2330 "These eleven functions were defined in C99, and describe the handling of "
2331 "floating-point rounding and exceptions (overflow, zero-divide, etc.)."
2335 #: build/C/man3/fenv.3:64
2341 #: build/C/man3/fenv.3:69
2343 "The I<divide-by-zero> exception occurs when an operation on finite numbers "
2344 "produces infinity as exact answer."
2348 #: build/C/man3/fenv.3:75
2350 "The I<overflow> exception occurs when a result has to be represented as a "
2351 "floating-point number, but has (much) larger absolute value than the largest "
2352 "(finite) floating-point number that is representable."
2356 #: build/C/man3/fenv.3:82
2358 "The I<underflow> exception occurs when a result has to be represented as a "
2359 "floating-point number, but has smaller absolute value than the smallest "
2360 "positive normalized floating-point number (and would lose much accuracy when "
2361 "represented as a denormalized number)."
2365 #: build/C/man3/fenv.3:92
2367 "The I<inexact> exception occurs when the rounded result of an operation is "
2368 "not equal to the infinite precision result. It may occur whenever "
2369 "I<overflow> or I<underflow> occurs."
2373 #: build/C/man3/fenv.3:97
2375 "The I<invalid> exception occurs when there is no well-defined result for an "
2376 "operation, as for 0/0 or infinity - infinity or sqrt(-1)."
2380 #: build/C/man3/fenv.3:97
2382 msgid "Exception handling"
2386 #: build/C/man3/fenv.3:103
2388 "Exceptions are represented in two ways: as a single bit (exception "
2389 "present/absent), and these bits correspond in some implementation-defined "
2390 "way with bit positions in an integer, and also as an opaque structure that "
2391 "may contain more information about the exception (perhaps the code address "
2392 "where it occurred)."
2396 #: build/C/man3/fenv.3:119
2398 "Each of the macros B<FE_DIVBYZERO>, B<FE_INEXACT>, B<FE_INVALID>, "
2399 "B<FE_OVERFLOW>, B<FE_UNDERFLOW> is defined when the implementation supports "
2400 "handling of the corresponding exception, and if so then defines the "
2401 "corresponding bit(s), so that one can call exception handling functions, for "
2402 "example, using the integer argument B<FE_OVERFLOW>|B<FE_UNDERFLOW>. Other "
2403 "exceptions may be supported. The macro B<FE_ALL_EXCEPT> is the bitwise OR "
2404 "of all bits corresponding to supported exceptions."
2408 #: build/C/man3/fenv.3:124
2410 "The B<feclearexcept>() function clears the supported exceptions represented "
2411 "by the bits in its argument."
2415 #: build/C/man3/fenv.3:132
2417 "The B<fegetexceptflag>() function stores a representation of the state of "
2418 "the exception flags represented by the argument I<excepts> in the opaque "
2423 #: build/C/man3/fenv.3:137
2425 "The B<feraiseexcept>() function raises the supported exceptions represented "
2426 "by the bits in I<excepts>."
2430 #: build/C/man3/fenv.3:148
2432 "The B<fesetexceptflag>() function sets the complete status for the "
2433 "exceptions represented by I<excepts> to the value I<*flagp>. This value "
2434 "must have been obtained by an earlier call of B<fegetexceptflag>() with a "
2435 "last argument that contained all bits in I<excepts>."
2439 #: build/C/man3/fenv.3:155
2441 "The B<fetestexcept>() function returns a word in which the bits are set "
2442 "that were set in the argument I<excepts> and for which the corresponding "
2443 "exception is currently set."
2447 #: build/C/man3/fenv.3:155
2449 msgid "Rounding mode"
2453 #: build/C/man3/fenv.3:163
2455 "The rounding mode determines how the result of floating-point operations is "
2456 "treated when the result cannot be exactly represented in the significand. "
2457 "Various rounding modes may be provided: round to nearest (the default), "
2458 "round up (toward positive infinity), round down (toward negative infinity), "
2459 "and round toward zero."
2463 #: build/C/man3/fenv.3:172
2465 "Each of the macros B<FE_TONEAREST>, B<FE_UPWARD>, B<FE_DOWNWARD>, and "
2466 "B<FE_TOWARDZERO> is defined when the implementation supports getting and "
2467 "setting the corresponding rounding direction."
2471 #: build/C/man3/fenv.3:177
2473 "The B<fegetround>() function returns the macro corresponding to the current "
2478 #: build/C/man3/fenv.3:182
2480 "The B<fesetround>() function sets the rounding mode as specified by its "
2481 "argument and returns zero when it was successful."
2485 #: build/C/man3/fenv.3:190
2487 "C99 and POSIX.1-2008 specify an identifier, B<FLT_ROUNDS>, defined in "
2488 "I<E<lt>float.hE<gt>>, which indicates the implementation-defined rounding "
2489 "behavior for floating-point addition. This identifier has one of the "
2494 #: build/C/man3/fenv.3:190
2500 #: build/C/man3/fenv.3:192
2501 msgid "The rounding mode is not determinable."
2505 #: build/C/man3/fenv.3:192
2511 #: build/C/man3/fenv.3:194
2512 msgid "Rounding is toward 0."
2516 #: build/C/man3/fenv.3:194
2522 #: build/C/man3/fenv.3:196
2523 msgid "Rounding is toward nearest number."
2527 #: build/C/man3/fenv.3:196
2533 #: build/C/man3/fenv.3:198
2534 msgid "Rounding is toward positive infinity."
2538 #: build/C/man3/fenv.3:198
2544 #: build/C/man3/fenv.3:200
2545 msgid "Rounding is toward negative infinity."
2549 #: build/C/man3/fenv.3:202
2550 msgid "Other values represent machine-dependent, nonstandard rounding modes."
2554 #: build/C/man3/fenv.3:208
2556 "The value of B<FLT_ROUNDS> should reflect the current rounding mode as set "
2557 "by B<fesetround>() (but see BUGS)."
2561 #: build/C/man3/fenv.3:208
2563 msgid "Floating-point environment"
2567 #: build/C/man3/fenv.3:220
2569 "The entire floating-point environment, including control modes and status "
2570 "flags, can be handled as one opaque object, of type I<fenv_t>. The default "
2571 "environment is denoted by B<FE_DFL_ENV> (of type I<const fenv_t\\ *>). This "
2572 "is the environment setup at program start and it is defined by ISO C to have "
2573 "round to nearest, all exceptions cleared and a nonstop (continue on "
2578 #: build/C/man3/fenv.3:225
2580 "The B<fegetenv>() function saves the current floating-point environment in "
2581 "the object I<*envp>."
2585 #: build/C/man3/fenv.3:232
2587 "The B<feholdexcept>() function does the same, then clears all exception "
2588 "flags, and sets a nonstop (continue on exceptions) mode, if available. It "
2589 "returns zero when successful."
2593 #: build/C/man3/fenv.3:245
2595 "The B<fesetenv>() function restores the floating-point environment from the "
2596 "object I<*envp>. This object must be known to be valid, for example, the "
2597 "result of a call to B<fegetenv>() or B<feholdexcept>() or equal to "
2598 "B<FE_DFL_ENV>. This call does not raise exceptions."
2602 #: build/C/man3/fenv.3:258
2604 "The B<feupdateenv>() function installs the floating-point environment "
2605 "represented by the object I<*envp>, except that currently raised exceptions "
2606 "are not cleared. After calling this function, the raised exceptions will be "
2607 "a bitwise OR of those previously set with those in I<*envp>. As before, the "
2608 "object I<*envp> must be known to be valid."
2611 #. Earlier seven of these functions were listed as returning void.
2612 #. This was corrected in Corrigendum 1 (ISO/IEC 9899:1999/Cor.1:2001(E))
2613 #. of the C99 Standard.
2615 #: build/C/man3/fenv.3:263
2616 msgid "These functions return zero on success and nonzero if an error occurred."
2620 #: build/C/man3/fenv.3:267
2621 msgid "IEC 60559 (IEC 559:1989), ANSI/IEEE 854, C99, POSIX.1-2001."
2625 #: build/C/man3/fenv.3:268
2631 #: build/C/man3/fenv.3:287
2633 "If possible, the GNU C Library defines a macro B<FE_NOMASK_ENV> which "
2634 "represents an environment where every exception raised causes a trap to "
2635 "occur. You can test for this macro using B<#ifdef>. It is defined only if "
2636 "B<_GNU_SOURCE> is defined. The C99 standard does not define a way to set "
2637 "individual bits in the floating-point mask, for example, to trap on specific "
2638 "flags. Since version 2.2, glibc supports the functions B<feenableexcept>() "
2639 "and B<fedisableexcept>() to set individual floating-point traps, and "
2640 "B<fegetexcept>() to query the state."
2644 #: build/C/man3/fenv.3:294
2646 msgid "B<int feenableexcept(int >I<excepts>B<);>\n"
2650 #: build/C/man3/fenv.3:296
2652 msgid "B<int fedisableexcept(int >I<excepts>B<);>\n"
2656 #: build/C/man3/fenv.3:298
2658 msgid "B<int fegetexcept(void);>\n"
2662 #: build/C/man3/fenv.3:312
2664 "The B<feenableexcept>() and B<fedisableexcept>() functions enable "
2665 "(disable) traps for each of the exceptions represented by I<excepts> and "
2666 "return the previous set of enabled exceptions when successful, and -1 "
2667 "otherwise. The B<fegetexcept>() function returns the set of all currently "
2668 "enabled exceptions."
2671 #. Aug 08, glibc 2.8
2672 #. See http://gcc.gnu.org/ml/gcc/2002-02/msg01535.html
2674 #: build/C/man3/fenv.3:323
2676 "C99 specifies that the value of B<FLT_ROUNDS> should reflect changes to the "
2677 "current rounding mode, as set by B<fesetround>(). Currently, this does not "
2678 "occur: B<FLT_ROUNDS> always has the value 1."
2682 #: build/C/man3/fenv.3:325
2683 msgid "B<math_error>(7)"
2687 #: build/C/man3/finite.3:25
2693 #: build/C/man3/finite.3:25 build/C/man3/gamma.3:9
2699 #: build/C/man3/finite.3:29
2701 "finite, finitef, finitel, isinf, isinff, isinfl, isnan, isnanf, isnanl - BSD "
2702 "floating-point classification functions"
2706 #: build/C/man3/finite.3:34
2708 msgid "B<int finite(double >I<x>B<);>\n"
2712 #: build/C/man3/finite.3:36
2714 msgid "B<int finitef(float >I<x>B<);>\n"
2718 #: build/C/man3/finite.3:38
2720 msgid "B<int finitel(long double >I<x>B<);>\n"
2724 #: build/C/man3/finite.3:40
2726 msgid "B<int isinf(double >I<x>B<);>\n"
2730 #: build/C/man3/finite.3:42
2732 msgid "B<int isinff(float >I<x>B<);>\n"
2736 #: build/C/man3/finite.3:44
2738 msgid "B<int isinfl(long double >I<x>B<);>\n"
2742 #: build/C/man3/finite.3:46
2744 msgid "B<int isnan(double >I<x>B<);>\n"
2748 #: build/C/man3/finite.3:48
2750 msgid "B<int isnanf(float >I<x>B<);>\n"
2754 #: build/C/man3/finite.3:50
2756 msgid "B<int isnanl(long double >I<x>B<);>\n"
2760 #: build/C/man3/finite.3:61
2761 msgid "B<finite>(), B<finitef>(), B<finitel>():"
2765 #: build/C/man3/finite.3:63 build/C/man3/finite.3:76 build/C/man3/lgamma.3:65
2766 msgid "_BSD_SOURCE || _SVID_SOURCE"
2770 #: build/C/man3/finite.3:65 build/C/man3/fpclassify.3:58
2775 #: build/C/man3/finite.3:67
2777 "_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\\ E<gt>=\\ 600 || "
2782 #: build/C/man3/finite.3:74
2783 msgid "B<isinff>(), B<isinfl>():"
2787 #: build/C/man3/finite.3:78 build/C/man3/fpclassify.3:50
2792 #: build/C/man3/finite.3:80
2793 msgid "_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE || _ISOC99_SOURCE;"
2797 #: build/C/man3/finite.3:86
2798 msgid "B<isnanf>(), B<isnanl>():"
2802 #: build/C/man3/finite.3:88 build/C/man3/gamma.3:38 build/C/man3/scalb.3:58
2803 msgid "_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\\ E<gt>=\\ 600"
2807 #: build/C/man3/finite.3:97
2809 "The B<finite>() functions return a nonzero value if I<x> is neither "
2810 "infinite nor a \"not-a-number\" (NaN) value, and 0 otherwise."
2814 #: build/C/man3/finite.3:104
2816 "The B<isnan>() functions return a nonzero value if I<x> is a NaN value, and "
2821 #: build/C/man3/finite.3:112
2823 "The B<isinf>() functions return 1 if I<x> is positive infinity, -1 if I<x> "
2824 "is negative infinity, and 0 otherwise."
2828 #. finite* not on HP-UX; they exist on Tru64.
2832 #. function occurs in 4.3BSD.
2833 #. see IEEE.3 in the 4.3BSD manual
2835 #: build/C/man3/finite.3:132
2837 "Note that these functions are obsolete. C99 defines macros B<isfinite>(), "
2838 "B<isinf>(), and B<isnan>() (for all types) replacing them. Further note "
2839 "that the C99 B<isinf>() has weaker guarantees on the return value. See "
2844 #: build/C/man3/finite.3:134
2845 msgid "B<fpclassify>(3)"
2849 #: build/C/man3/floor.3:27
2855 #: build/C/man3/floor.3:30
2856 msgid "floor, floorf, floorl - largest integral value not greater than argument"
2860 #: build/C/man3/floor.3:35
2862 msgid "B<double floor(double >I<x>B<);>\n"
2866 #: build/C/man3/floor.3:37
2868 msgid "B<float floorf(float >I<x>B<);>\n"
2872 #: build/C/man3/floor.3:39
2874 msgid "B<long double floorl(long double >I<x>B<);>\n"
2878 #: build/C/man3/floor.3:51
2879 msgid "B<floorf>(), B<floorl>():"
2883 #: build/C/man3/floor.3:62
2885 "These functions return the largest integral value that is not greater than "
2890 #: build/C/man3/floor.3:68
2891 msgid "For example, I<floor(0.5)> is 0.0, and I<floor(-0.5)> is -1.0."
2895 #: build/C/man3/floor.3:71
2896 msgid "These functions return the floor of I<x>."
2900 #: build/C/man3/floor.3:77
2901 msgid "If I<x> is integral, +0, -0, NaN, or an infinity, I<x> itself is returned."
2905 #: build/C/man3/floor.3:109
2907 "B<ceil>(3), B<lrint>(3), B<nearbyint>(3), B<rint>(3), B<round>(3), "
2912 #: build/C/man3/fma.3:12
2918 #: build/C/man3/fma.3:15
2919 msgid "fma, fmaf, fmal - floating-point multiply and add"
2923 #: build/C/man3/fma.3:20
2925 msgid "B<double fma(double >I<x>B<, double >I<y>B<, double >I<z>B<);>\n"
2929 #: build/C/man3/fma.3:22
2931 msgid "B<float fmaf(float >I<x>B<, float >I<y>B<, float >I<z>B<);>\n"
2935 #: build/C/man3/fma.3:24
2938 "B<long double fmal(long double >I<x>B<, long double >I<y>B<, long double "
2943 #: build/C/man3/fma.3:37
2944 msgid "B<fma>(), B<fmaf>(), B<fmal>():"
2948 #: build/C/man3/fma.3:53
2950 "The B<fma>() function computes I<x> * I<y> + I<z>. The result is rounded "
2951 "as one ternary operation according to the current rounding mode (see "
2956 #: build/C/man3/fma.3:57
2958 "These functions return the value of I<x> * I<y> + I<z>, rounded as one "
2959 "ternary operation."
2963 #: build/C/man3/fma.3:73
2965 "If I<x> times I<y> is an exact infinity, and I<z> is an infinity with the "
2966 "opposite sign, a domain error occurs, and a NaN is returned."
2969 #. POSIX.1-2008 allows some possible differences for the following two
2970 #. domain error cases, but on Linux they are treated the same (AFAICS).
2971 #. Nevertheless, we'll mirror POSIX.1 and describe the two cases
2973 #. POSIX.1 says that a NaN or an implementation-defined value shall
2974 #. be returned for this case.
2976 #: build/C/man3/fma.3:89
2978 "If one of I<x> or I<y> is an infinity, the other is 0, and I<z> is not a "
2979 "NaN, a domain error occurs, and a NaN is returned."
2982 #. POSIX.1 makes the domain error optional for this case.
2984 #: build/C/man3/fma.3:100
2986 "If one of I<x> or I<y> is an infinity, and the other is 0, and I<z> is a "
2987 "NaN, a domain error occurs, and a NaN is returned."
2991 #: build/C/man3/fma.3:109
2993 "If I<x> times I<y> is not an infinity times zero (or vice versa), and I<z> "
2994 "is a NaN, a NaN is returned."
2998 #: build/C/man3/fma.3:113
3000 "If the result overflows, a range error occurs, and an infinity with the "
3001 "correct sign is returned."
3005 #: build/C/man3/fma.3:117
3006 msgid "If the result underflows, a range error occurs, and a signed 0 is returned."
3010 #: build/C/man3/fma.3:124
3013 "Domain error: I<x> * I<y> + I<z>, or I<x> * I<y> is invalid and I<z> is not "
3021 #: build/C/man3/fma.3:133 build/C/man3/ilogb.3:125 build/C/man3/log1p.3:128 build/C/man3/lrint.3:102 build/C/man3/lround.3:105 build/C/man3/remainder.3:165 build/C/man3/remquo.3:117 build/C/man3/scalb.3:155 build/C/man3/sincos.3:67
3022 msgid "An invalid floating-point exception (B<FE_INVALID>) is raised."
3026 #: build/C/man3/fma.3:141 build/C/man3/hypot.3:143 build/C/man3/tgamma.3:143 build/C/man3/y0.3:194
3028 msgid "Range error: result underflow"
3032 #: build/C/man3/fma.3:161
3033 msgid "B<remainder>(3), B<remquo>(3)"
3037 #: build/C/man3/fmax.3:9
3043 #: build/C/man3/fmax.3:12
3044 msgid "fmax, fmaxf, fmaxl - determine maximum of two floating-point numbers"
3048 #: build/C/man3/fmax.3:16
3049 msgid "B<double fmax(double >I<x>B<, double >I<y>B<);>"
3053 #: build/C/man3/fmax.3:18
3054 msgid "B<float fmaxf(float >I<x>B<, float >I<y>B<);>"
3058 #: build/C/man3/fmax.3:20
3059 msgid "B<long double fmaxl(long double >I<x>B<, long double >I<y>B<);>"
3063 #: build/C/man3/fmax.3:32
3064 msgid "B<fmax>(), B<fmaxf>(), B<fmaxl>():"
3068 #: build/C/man3/fmax.3:45
3069 msgid "These functions return the larger value of I<x> and I<y>."
3073 #: build/C/man3/fmax.3:50
3074 msgid "These functions return the maximum of I<x> and I<y>."
3078 #: build/C/man3/fmax.3:52 build/C/man3/fmin.3:52
3079 msgid "If one argument is a NaN, the other argument is returned."
3083 #: build/C/man3/fmax.3:54 build/C/man3/fmin.3:54
3084 msgid "If both arguments are NaN, a NaN is returned."
3088 #: build/C/man3/fmax.3:62
3093 #: build/C/man3/fmin.3:9
3099 #: build/C/man3/fmin.3:12
3100 msgid "fmin, fminf, fminl - determine minimum of two floating-point numbers"
3104 #: build/C/man3/fmin.3:16
3105 msgid "B<double fmin(double >I<x>B<, double >I<y>B<);>"
3109 #: build/C/man3/fmin.3:18
3110 msgid "B<float fminf(float >I<x>B<, float >I<y>B<);>"
3114 #: build/C/man3/fmin.3:20
3115 msgid "B<long double fminl(long double >I<x>B<, long double >I<y>B<);>"
3119 #: build/C/man3/fmin.3:32
3120 msgid "B<fmin>(), B<fminf>(), B<fminl>():"
3124 #: build/C/man3/fmin.3:45
3125 msgid "These functions the lesser value of I<x> and I<y>."
3129 #: build/C/man3/fmin.3:50
3130 msgid "These functions return the minimum of I<x> and I<y>."
3134 #: build/C/man3/fmod.3:35
3140 #: build/C/man3/fmod.3:35
3146 #: build/C/man3/fmod.3:38
3147 msgid "fmod, fmodf, fmodl - floating-point remainder function"
3151 #: build/C/man3/fmod.3:43
3153 msgid "B<double fmod(double >I<x>B<, double >I<y>B<);>\n"
3157 #: build/C/man3/fmod.3:45
3159 msgid "B<float fmodf(float >I<x>B<, float >I<y>B<);>\n"
3163 #: build/C/man3/fmod.3:47
3165 msgid "B<long double fmodl(long double >I<x>B<, long double >I<y>B<);>\n"
3169 #: build/C/man3/fmod.3:59
3170 msgid "B<fmodf>(), B<fmodl>():"
3174 #: build/C/man3/fmod.3:87
3176 "The B<fmod>() function computes the floating-point remainder of dividing "
3177 "I<x> by I<y>. The return value is I<x> - I<n> * I<y>, where I<n> is the "
3178 "quotient of I<x> / I<y>, rounded toward zero to an integer."
3182 #: build/C/man3/fmod.3:96
3184 "On success, these functions return the value I<x>\\ -\\ I<n>*I<y>, for some "
3185 "integer I<n>, such that the returned value has the same sign as I<x> and a "
3186 "magnitude less than the magnitude of I<y>."
3190 #: build/C/man3/fmod.3:108
3191 msgid "If I<x> is an infinity, a domain error occurs, and a NaN is returned."
3195 #: build/C/man3/fmod.3:114
3196 msgid "If I<y> is zero, a domain error occurs, and a NaN is returned."
3200 #: build/C/man3/fmod.3:120
3201 msgid "If I<x> is +0 (-0), and I<y> is not zero, +0 (-0) is returned."
3204 #. [XXX see bug above] and \fIx\fP is not a NaN
3206 #: build/C/man3/fmod.3:136 build/C/man3/remainder.3:172
3208 msgid "Domain error: I<y> is zero"
3211 #. http://sources.redhat.com/bugzilla/show_bug.cgi?id=6784
3213 #: build/C/man3/fmod.3:160
3215 "Before version 2.10, the glibc implementation did not set I<errno> to "
3216 "B<EDOM> when a domain error occurred for an infinite I<x>."
3220 #: build/C/man3/fmod.3:162
3221 msgid "B<remainder>(3)"
3225 #: build/C/man3/fpclassify.3:10
3231 #: build/C/man3/fpclassify.3:14
3233 "fpclassify, isfinite, isnormal, isnan, isinf - floating-point classification "
3238 #: build/C/man3/fpclassify.3:19
3240 msgid "B<int fpclassify(>I<x>B<);>\n"
3244 #: build/C/man3/fpclassify.3:21
3246 msgid "B<int isfinite(>I<x>B<);>\n"
3250 #: build/C/man3/fpclassify.3:23
3252 msgid "B<int isnormal(>I<x>B<);>\n"
3256 #: build/C/man3/fpclassify.3:25
3258 msgid "B<int isnan(>I<x>B<);>\n"
3262 #: build/C/man3/fpclassify.3:27
3264 msgid "B<int isinf(>I<x>B<);>\n"
3268 #: build/C/man3/fpclassify.3:42
3269 msgid "B<fpclassify>(), B<isfinite>(), B<isnormal>():"
3273 #: build/C/man3/fpclassify.3:76
3275 "Floating point numbers can have special values, such as infinite or NaN. "
3276 "With the macro B<fpclassify(>I<x>B<)> you can find out what type I<x> is. "
3277 "The macro takes any floating-point expression as argument. The result is "
3278 "one of the following values:"
3282 #: build/C/man3/fpclassify.3:76
3288 #: build/C/man3/fpclassify.3:80
3289 msgid "I<x> is \"Not a Number\"."
3293 #: build/C/man3/fpclassify.3:80
3295 msgid "B<FP_INFINITE>"
3299 #: build/C/man3/fpclassify.3:84
3300 msgid "I<x> is either positive infinity or negative infinity."
3304 #: build/C/man3/fpclassify.3:84
3310 #: build/C/man3/fpclassify.3:88
3311 msgid "I<x> is zero."
3315 #: build/C/man3/fpclassify.3:88
3317 msgid "B<FP_SUBNORMAL>"
3321 #: build/C/man3/fpclassify.3:92
3322 msgid "I<x> is too small to be represented in normalized format."
3326 #: build/C/man3/fpclassify.3:92
3328 msgid "B<FP_NORMAL>"
3332 #: build/C/man3/fpclassify.3:96
3334 "if nothing of the above is correct then it must be a normal floating-point "
3339 #: build/C/man3/fpclassify.3:98
3340 msgid "The other macros provide a short answer to some standard questions."
3344 #: build/C/man3/fpclassify.3:98
3346 msgid "B<isfinite(>I<x>B<)>"
3350 #: build/C/man3/fpclassify.3:101
3351 msgid "returns a nonzero value if"
3355 #: build/C/man3/fpclassify.3:103
3356 msgid "(fpclassify(x) != FP_NAN && fpclassify(x) != FP_INFINITE)"
3360 #: build/C/man3/fpclassify.3:103
3362 msgid "B<isnormal(>I<x>B<)>"
3366 #: build/C/man3/fpclassify.3:107
3367 msgid "returns a nonzero value if (fpclassify(x) == FP_NORMAL)"
3371 #: build/C/man3/fpclassify.3:107
3373 msgid "B<isnan(>I<x>B<)>"
3377 #: build/C/man3/fpclassify.3:111
3378 msgid "returns a nonzero value if (fpclassify(x) == FP_NAN)"
3382 #: build/C/man3/fpclassify.3:111
3384 msgid "B<isinf(>I<x>B<)>"
3388 #: build/C/man3/fpclassify.3:118
3389 msgid "returns 1 if I<x> is positive infinity, and -1 if I<x> is negative infinity."
3393 #: build/C/man3/fpclassify.3:120
3394 msgid "C99, POSIX.1."
3398 #: build/C/man3/fpclassify.3:125
3400 "For B<isinf>(), the standards merely say that the return value is nonzero if "
3401 "and only if the argument has an infinite value."
3405 #: build/C/man3/fpclassify.3:132
3407 "In glibc 2.01 and earlier, B<isinf>() returns a nonzero value (actually: 1) "
3408 "if I<x> is positive infinity or negative infinity. (This is all that C99 "
3413 #: build/C/man3/fpclassify.3:137
3414 msgid "B<finite>(3), B<INFINITY>(3), B<isgreater>(3), B<signbit>(3)"
3418 #: build/C/man3/frexp.3:33
3424 #: build/C/man3/frexp.3:37
3426 "frexp, frexpf, frexpl - convert floating-point number to fractional and "
3427 "integral components"
3431 #: build/C/man3/frexp.3:42
3433 msgid "B<double frexp(double >I<x>B<, int *>I<exp>B<);>\n"
3437 #: build/C/man3/frexp.3:44
3439 msgid "B<float frexpf(float >I<x>B<, int *>I<exp>B<);>\n"
3443 #: build/C/man3/frexp.3:46
3445 msgid "B<long double frexpl(long double >I<x>B<, int *>I<exp>B<);>\n"
3449 #: build/C/man3/frexp.3:58
3450 msgid "B<frexpf>(), B<frexpl>():"
3454 #: build/C/man3/frexp.3:74
3456 "The B<frexp>() function is used to split the number I<x> into a normalized "
3457 "fraction and an exponent which is stored in I<exp>."
3461 #: build/C/man3/frexp.3:86
3463 "The B<frexp>() function returns the normalized fraction. If the argument "
3464 "I<x> is not zero, the normalized fraction is I<x> times a power of two, and "
3465 "its absolute value is always in the range 1/2 (inclusive) to 1 (exclusive), "
3470 #: build/C/man3/frexp.3:92
3472 "If I<x> is zero, then the normalized fraction is zero and zero is stored in "
3477 #: build/C/man3/frexp.3:99
3479 "If I<x> is a NaN, a NaN is returned, and the value of I<*exp> is "
3484 #: build/C/man3/frexp.3:106
3486 "If I<x> is positive infinity (negative infinity), positive infinity "
3487 "(negative infinity) is returned, and the value of I<*exp> is unspecified."
3491 #: build/C/man3/frexp.3:116
3492 msgid "The program below produces results such as the following:"
3496 #: build/C/man3/frexp.3:123
3499 "$B< ./a.out 2560>\n"
3500 "frexp(2560, &e) = 0.625: 0.625 * 2^12 = 2560\n"
3502 "frexp(-4, &e) = -0.5: -0.5 * 2^3 = -4\n"
3506 #: build/C/man3/frexp.3:125 build/C/man3/matherr.3:360
3508 msgid "Program source"
3512 #: build/C/man3/frexp.3:132
3515 "#include E<lt>math.hE<gt>\n"
3516 "#include E<lt>float.hE<gt>\n"
3517 "#include E<lt>stdio.hE<gt>\n"
3518 "#include E<lt>stdlib.hE<gt>\n"
3522 #: build/C/man3/frexp.3:138
3526 "main(int argc, char *argv[])\n"
3533 #: build/C/man3/frexp.3:141
3536 " x = strtod(argv[1], NULL);\n"
3537 " r = frexp(x, &exp);\n"
3541 #: build/C/man3/frexp.3:146
3544 " printf(\"frexp(%g, &e) = %g: %g * %d^%d = %g\\en\",\n"
3545 " x, r, r, FLT_RADIX, exp, x);\n"
3546 " exit(EXIT_SUCCESS);\n"
3551 #: build/C/man3/frexp.3:150
3552 msgid "B<ldexp>(3), B<modf>(3)"
3556 #: build/C/man3/gamma.3:9
3562 #: build/C/man3/gamma.3:12
3563 msgid "gamma, gammaf, gammal - (logarithm of the) gamma function"
3567 #: build/C/man3/gamma.3:16
3568 msgid "B<double gamma(double >I<x>B<);>"
3572 #: build/C/man3/gamma.3:18
3573 msgid "B<float gammaf(float >I<x>B<);>"
3577 #: build/C/man3/gamma.3:20
3578 msgid "B<long double gammal(long double >I<x>B<);>"
3582 #: build/C/man3/gamma.3:30
3587 #: build/C/man3/gamma.3:32 build/C/man3/lgamma.3:69
3588 msgid "_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE"
3592 #: build/C/man3/gamma.3:35
3593 msgid "B<gammaf>(), B<gammal>():"
3597 #: build/C/man3/gamma.3:46
3599 "These functions are deprecated: instead, use either the B<tgamma>(3) or the "
3600 "B<lgamma>(3) functions, as appropriate."
3604 #: build/C/man3/gamma.3:49 build/C/man3/lgamma.3:74
3605 msgid "For the definition of the Gamma function, see B<tgamma>(3)."
3609 #: build/C/man3/gamma.3:49
3611 msgid "*BSD version"
3615 #: build/C/man3/gamma.3:53
3617 "The libm in 4.4BSD and some versions of FreeBSD had a B<gamma>() function "
3618 "that computes the Gamma function, as one would expect."
3622 #: build/C/man3/gamma.3:53
3624 msgid "glibc version"
3628 #: build/C/man3/gamma.3:59
3630 "Glibc has a B<gamma>() function that is equivalent to B<lgamma>(3) and "
3631 "computes the natural logarithm of the Gamma function."
3635 #: build/C/man3/gamma.3:62 build/C/man3/gamma.3:65
3636 msgid "See B<lgamma>(3)."
3640 #: build/C/man3/gamma.3:68
3642 "Because of historical variations in behavior across systems, this function "
3643 "is not specified in any standard."
3647 #: build/C/man3/gamma.3:69
3653 #: build/C/man3/gamma.3:81
3655 "4.2BSD had a B<gamma>() that computed ln(|Gamma(|I<x>|)|), leaving the sign "
3656 "of Gamma(|I<x>|) in the external integer I<signgam>. In 4.3BSD the name "
3657 "was changed to B<lgamma>(3), and the man page promises"
3661 #: build/C/man3/gamma.3:85
3663 "At some time in the future the name gamma will be rehabilitated and used for "
3664 "the Gamma function"
3667 #. The FreeBSD man page says about gamma() that it is like lgamma()
3668 #. except that is does not set signgam.
3669 #. Also, that 4.4BSD has a gamma() that computes the true gamma function.
3671 #: build/C/man3/gamma.3:97
3673 "This did indeed happen in 4.4BSD, where B<gamma>() computes the Gamma "
3674 "function (with no effect on I<signgam>). However, this came too late, and "
3675 "we now have B<tgamma>(3), the \"true gamma\" function."
3679 #: build/C/man3/gamma.3:101
3680 msgid "B<lgamma>(3), B<signgam>(3), B<tgamma>(3)"
3684 #: build/C/man3/hypot.3:33
3690 #: build/C/man3/hypot.3:36
3691 msgid "hypot, hypotf, hypotl - Euclidean distance function"
3695 #: build/C/man3/hypot.3:41
3697 msgid "B<double hypot(double >I<x>B<, double >I<y>B<);>\n"
3701 #: build/C/man3/hypot.3:43
3703 msgid "B<float hypotf(float >I<x>B<, float >I<y>B<);>\n"
3707 #: build/C/man3/hypot.3:45
3709 msgid "B<long double hypotl(long double >I<x>B<, long double >I<y>B<);>\n"
3713 #: build/C/man3/hypot.3:56
3718 #: build/C/man3/hypot.3:66
3719 msgid "B<hypotf>(), B<hypotl>():"
3723 #: build/C/man3/hypot.3:87
3725 "The B<hypot>() function returns sqrt(I<x>*I<x>+I<y>*I<y>). This is the "
3726 "length of the hypotenuse of a right-angled triangle with sides of length "
3727 "I<x> and I<y>, or the distance of the point (I<x>,I<y>) from the origin."
3730 #. e.g., hypot(DBL_MIN, DBL_MIN) does the right thing, as does, say
3731 #. hypot(DBL_MAX/2.0, DBL_MAX/2.0).
3733 #: build/C/man3/hypot.3:92
3735 "The calculation is performed without undue overflow or underflow during the "
3736 "intermediate steps of the calculation."
3740 #: build/C/man3/hypot.3:98
3742 "On success, these functions return the length of a right-angled triangle "
3743 "with sides of length I<x> and I<y>."
3747 #: build/C/man3/hypot.3:105
3748 msgid "If I<x> or I<y> is an infinity, positive infinity is returned."
3752 #: build/C/man3/hypot.3:113
3754 "If I<x> or I<y> is a NaN, and the other argument is not an infinity, a NaN "
3758 #. Actually, could the result not be subnormal if both arguments
3759 #. are subnormal? I think not -- mtk, Jul 2008
3761 #: build/C/man3/hypot.3:128
3763 "If both arguments are subnormal, and the result is subnormal, a range error "
3764 "occurs, and the correct result is returned."
3767 #. FIXME . Is it intentional that these functions do not set errno?
3768 #. They do set errno for the y == 0 case, below.
3769 #. Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6783
3771 #: build/C/man3/hypot.3:158 build/C/man3/ilogb.3:130 build/C/man3/remainder.3:172
3772 msgid "These functions do not set I<errno> for this case."
3776 #: build/C/man3/hypot.3:167
3777 msgid "B<cabs>(3), B<sqrt>(3)"
3781 #: build/C/man3/ilogb.3:29
3787 #: build/C/man3/ilogb.3:32
3788 msgid "ilogb, ilogbf, ilogbl - get integer exponent of a floating-point value"
3792 #: build/C/man3/ilogb.3:36
3793 msgid "B<int ilogb(double >I<x>B<);>"
3797 #: build/C/man3/ilogb.3:38
3798 msgid "B<int ilogbf(float >I<x>B<);>"
3802 #: build/C/man3/ilogb.3:40
3803 msgid "B<int ilogbl(long double >I<x>B<);>"
3807 #: build/C/man3/ilogb.3:50
3812 #: build/C/man3/ilogb.3:62
3813 msgid "B<ilogbf>(), B<ilogbl>():"
3817 #: build/C/man3/ilogb.3:78
3819 "These functions return the exponent part of their argument as a signed "
3820 "integer. When no error occurs, these functions are equivalent to the "
3821 "corresponding B<logb>(3) functions, cast to I<int>."
3825 #: build/C/man3/ilogb.3:82
3827 "On success, these functions return the exponent of I<x>, as a signed "
3831 #. the POSIX.1 spec for logb() says logb() gives pole error for this
3832 #. case, but for ilogb() it says domain error.
3833 #. glibc: The numeric value is either `INT_MIN' or `-INT_MAX'.
3835 #: build/C/man3/ilogb.3:90
3837 "If I<x> is zero, then a domain error occurs, and the functions return "
3841 #. glibc: The numeric value is either `INT_MIN' or `INT_MAX'.
3842 #. On i386, FP_ILOGB0 and FP_ILOGBNAN have the same value.
3844 #: build/C/man3/ilogb.3:97
3846 "If I<x> is a NaN, then a domain error occurs, and the functions return "
3851 #. POSIX.1-2001 also says:
3852 #. If the correct value is greater than {INT_MAX}, {INT_MAX}
3853 #. shall be returned and a domain error shall occur.
3855 #. If the correct value is less than {INT_MIN}, {INT_MIN}
3856 #. shall be returned and a domain error shall occur.
3858 #: build/C/man3/ilogb.3:110
3860 "If I<x> is negative infinity or positive infinity, then a domain error "
3861 "occurs, and the functions return B<INT_MAX>."
3865 #: build/C/man3/ilogb.3:117
3867 msgid "Domain error: I<x> is 0 or a NaN"
3870 #. FIXME . Is it intentional that these functions do not set errno,
3871 #. or raise an exception?
3872 #. log(), log2(), log10() do set errno
3873 #. Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6794
3875 #: build/C/man3/ilogb.3:146
3876 msgid "These functions do not set I<errno> or raise an exception for this case."
3880 #: build/C/man3/ilogb.3:152
3881 msgid "B<log>(3), B<logb>(3), B<significand>(3)"
3885 #: build/C/man3/infnan.3:33
3891 #: build/C/man3/infnan.3:33
3897 #: build/C/man3/infnan.3:36
3898 msgid "infnan - deal with infinite or not-a-number (NaN) result"
3902 #: build/C/man3/infnan.3:41
3904 msgid "B<double infnan(int >I<error>B<);>\n"
3908 #: build/C/man3/infnan.3:56
3910 "The B<infnan>() function returns a suitable value for infinity and "
3911 "\"not-a-number\" (NaN) results. The value of I<error> can be B<ERANGE> to "
3912 "represent infinity or anything else to represent NaN. I<errno> is also set."
3916 #: build/C/man3/infnan.3:64
3917 msgid "If I<error> is B<ERANGE> (Infinity), B<HUGE_VAL> is returned."
3921 #: build/C/man3/infnan.3:72
3922 msgid "If I<error> is -B<ERANGE> (-Infinity), -B<HUGE_VAL> is returned."
3926 #: build/C/man3/infnan.3:76
3927 msgid "If I<error> is anything else, NAN is returned."
3931 #: build/C/man3/infnan.3:77
3937 #: build/C/man3/infnan.3:82
3938 msgid "The value of I<error> is \"not-a-number\" (NaN)."
3942 #: build/C/man3/infnan.3:82
3948 #: build/C/man3/infnan.3:87
3949 msgid "The value of I<error> is positive infinity or negative infinity."
3953 #: build/C/man3/infnan.3:89
3958 #: build/C/man3/infnan.3:92
3960 "This obsolete function was provided in libc4 and libc5, but is not available "
3965 #: build/C/man3/isgreater.3:10
3971 #: build/C/man3/isgreater.3:10
3977 #: build/C/man3/isgreater.3:14
3979 "isgreater, isgreaterequal, isless, islessequal, islessgreater, isunordered - "
3980 "floating-point relational tests without exception for NaN"
3984 #: build/C/man3/isgreater.3:19
3986 msgid "B<int isgreater(>I<x>B<, >I<y>B<);>\n"
3990 #: build/C/man3/isgreater.3:21
3992 msgid "B<int isgreaterequal(>I<x>B<, >I<y>B<);>\n"
3996 #: build/C/man3/isgreater.3:23
3998 msgid "B<int isless(>I<x>B<, >I<y>B<);>\n"
4002 #: build/C/man3/isgreater.3:25
4004 msgid "B<int islessequal(>I<x>B<, >I<y>B<);>\n"
4008 #: build/C/man3/isgreater.3:27
4010 msgid "B<int islessgreater(>I<x>B<, >I<y>B<);>\n"
4014 #: build/C/man3/isgreater.3:29
4016 msgid "B<int isunordered(>I<x>B<, >I<y>B<);>\n"
4020 #: build/C/man3/isgreater.3:40
4021 msgid "All functions described here:"
4025 #: build/C/man3/isgreater.3:55
4027 "The normal relation operations (like B<E<lt>>, \"less than\") will fail if "
4028 "one of the operands is NaN. This will cause an exception. To avoid this, "
4029 "C99 defines the macros listed below."
4033 #: build/C/man3/isgreater.3:61
4035 "These macros are guaranteed to evaluate their arguments only once. The "
4036 "arguments must be of real floating-point type (note: do not pass integer "
4037 "values as arguments to these macros, since the arguments will I<not> be "
4038 "promoted to real-floating types)."
4042 #: build/C/man3/isgreater.3:61
4044 msgid "B<isgreater>()"
4048 #: build/C/man3/isgreater.3:69
4049 msgid "determines I<(x)\\ E<gt>\\ (y)> without an exception if I<x> or I<y> is NaN."
4053 #: build/C/man3/isgreater.3:69
4055 msgid "B<isgreaterequal>()"
4059 #: build/C/man3/isgreater.3:77
4061 "determines I<(x)\\ E<gt>=\\ (y)> without an exception if I<x> or I<y> is "
4066 #: build/C/man3/isgreater.3:77
4072 #: build/C/man3/isgreater.3:85
4073 msgid "determines I<(x)\\ E<lt>\\ (y)> without an exception if I<x> or I<y> is NaN."
4077 #: build/C/man3/isgreater.3:85
4079 msgid "B<islessequal>()"
4083 #: build/C/man3/isgreater.3:93
4085 "determines I<(x)\\ E<lt>=\\ (y)> without an exception if I<x> or I<y> is "
4090 #: build/C/man3/isgreater.3:93
4092 msgid "B<islessgreater>()"
4096 #: build/C/man3/isgreater.3:107
4098 "determines I<(x)\\ E<lt> (y) || (x) E<gt>\\ (y)> without an exception if "
4099 "I<x> or I<y> is NaN. This macro is not equivalent to I<x\\ !=\\ y> because "
4100 "that expression is true if I<x> or I<y> is NaN."
4104 #: build/C/man3/isgreater.3:107
4106 msgid "B<isunordered>()"
4110 #: build/C/man3/isgreater.3:111
4112 "determines whether its arguments are unordered, that is, whether at least "
4113 "one of the arguments is a NaN."
4117 #: build/C/man3/isgreater.3:116
4119 "The macros other than B<isunordered>() return the result of the relational "
4120 "comparison; these macros return 0 if either argument is a NaN."
4124 #: build/C/man3/isgreater.3:123
4125 msgid "B<isunordered>() returns 1 if I<x> or I<y> is NaN and 0 otherwise."
4129 #: build/C/man3/isgreater.3:132
4131 "Not all hardware supports these functions, and where hardware support isn't "
4132 "provided, they will be emulated by macros. This will result in a "
4133 "performance penalty. Don't use these functions if NaN is of no concern for "
4138 #: build/C/man3/isgreater.3:135
4139 msgid "B<fpclassify>(3), B<isnan>(3)"
4143 #: build/C/man3/j0.3:36
4149 #: build/C/man3/j0.3:40
4151 "j0, j0f, j0l, j1, j1f, j1l, jn, jnf, jnl - Bessel functions of the first "
4156 #: build/C/man3/j0.3:46
4157 msgid "B<double j0(double >I<x>B<);>"
4161 #: build/C/man3/j0.3:48
4162 msgid "B<double j1(double >I<x>B<);>"
4166 #: build/C/man3/j0.3:50
4167 msgid "B<double jn(int >I<n>B<, double >I<x>B<);>"
4171 #: build/C/man3/j0.3:52
4172 msgid "B<float j0f(float >I<x>B<);>"
4176 #: build/C/man3/j0.3:54
4177 msgid "B<float j1f(float >I<x>B<);>"
4181 #: build/C/man3/j0.3:56
4182 msgid "B<float jnf(int >I<n>B<, float >I<x>B<);>"
4186 #: build/C/man3/j0.3:58
4187 msgid "B<long double j0l(long double >I<x>B<);>"
4191 #: build/C/man3/j0.3:60
4192 msgid "B<long double j1l(long double >I<x>B<);>"
4196 #: build/C/man3/j0.3:62
4197 msgid "B<long double jnl(int >I<n>B<, long double >I<x>B<);>"
4201 #: build/C/man3/j0.3:74
4202 msgid "B<j0>(), B<j1>(), B<jn>():"
4206 #: build/C/man3/j0.3:76 build/C/man3/y0.3:76
4207 msgid "_SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE"
4211 #: build/C/man3/j0.3:84
4212 msgid "B<j0f>(), B<j0l>(), B<j1f>(), B<j1l>(), B<jnf>(), B<jnl>():"
4215 #. Also seems to work: -std=c99 -D_XOPEN_SOURCE
4217 #: build/C/man3/j0.3:87 build/C/man3/y0.3:87
4218 msgid "_SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE\\ E<gt>=\\ 600"
4222 #: build/C/man3/j0.3:104
4224 "The B<j0>() and B<j1>() functions return Bessel functions of I<x> of the "
4225 "first kind of orders 0 and 1, respectively. The B<jn>() function returns "
4226 "the Bessel function of I<x> of the first kind of order I<n>."
4230 #: build/C/man3/j0.3:114
4232 "The B<j0f>() etc. and B<j0l>() etc. functions are versions that take and "
4233 "return I<float> and I<long double> values, respectively."
4237 #: build/C/man3/j0.3:118
4239 "On success, these functions return the appropriate Bessel value of the first "
4244 #: build/C/man3/j0.3:129
4246 "If I<x> is too large in magnitude, or the result underflows, a range error "
4247 "occurs, and the return value is 0."
4251 #: build/C/man3/j0.3:136
4253 msgid "Range error: result underflow, or I<x> is too large in magnitude"
4256 #. An underflow floating-point exception
4257 #. .RB ( FE_UNDERFLOW )
4260 #: build/C/man3/j0.3:144
4261 msgid "I<errno> is set to B<ERANGE>."
4264 #. FIXME . Is it intentional that these functions do not raise exceptions?
4266 #. Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6805
4268 #: build/C/man3/j0.3:150
4269 msgid "These functions do not raise exceptions for B<fetestexcept>(3)."
4273 #: build/C/man3/j0.3:156 build/C/man3/y0.3:229
4275 "The functions returning I<double> conform to SVr4, 4.3BSD, POSIX.1-2001. "
4276 "The others are nonstandard functions that also exist on the BSDs."
4280 #: build/C/man3/j0.3:165
4282 "There are errors of up to 2e-16 in the values returned by B<j0>(), B<j1>() "
4283 "and B<jn>() for values of I<x> between -8 and 8."
4287 #: build/C/man3/j0.3:167
4292 #: build/C/man3/ldexp.3:34
4298 #: build/C/man3/ldexp.3:37
4300 "ldexp, ldexpf, ldexpl - multiply floating-point number by integral power of "
4305 #: build/C/man3/ldexp.3:42
4307 msgid "B<double ldexp(double >I<x>B<, int >I<exp>B<);>\n"
4311 #: build/C/man3/ldexp.3:44
4313 msgid "B<float ldexpf(float >I<x>B<, int >I<exp>B<);>\n"
4317 #: build/C/man3/ldexp.3:46
4319 msgid "B<long double ldexpl(long double >I<x>B<, int >I<exp>B<);>\n"
4323 #: build/C/man3/ldexp.3:58
4324 msgid "B<ldexpf>(), B<ldexpl>():"
4328 #: build/C/man3/ldexp.3:73
4330 "The B<ldexp>() function returns the result of multiplying the "
4331 "floating-point number I<x> by 2 raised to the power I<exp>."
4335 #: build/C/man3/ldexp.3:76
4336 msgid "On success, these functions return I<x * (2^exp)>."
4340 #: build/C/man3/ldexp.3:82
4341 msgid "If I<exp> is zero, then I<x> is returned."
4345 #: build/C/man3/ldexp.3:106 build/C/man3/scalb.3:133 build/C/man3/scalbln.3:125
4347 "If the result overflows, a range error occurs, and the functions return "
4348 "B<HUGE_VAL>, B<HUGE_VALF>, or B<HUGE_VALL>, respectively, with a sign the "
4353 #: build/C/man3/ldexp.3:139
4354 msgid "B<frexp>(3), B<modf>(3), B<scalbln>(3)"
4358 #: build/C/man3/lgamma.3:11
4364 #: build/C/man3/lgamma.3:15
4366 "lgamma, lgammaf, lgammal, lgamma_r, lgammaf_r, lgammal_r, signgam - log "
4371 #: build/C/man3/lgamma.3:20
4373 msgid "B<double lgamma(double >I<x>B<);>\n"
4377 #: build/C/man3/lgamma.3:22
4379 msgid "B<float lgammaf(float >I<x>B<);>\n"
4383 #: build/C/man3/lgamma.3:24
4385 msgid "B<long double lgammal(long double >I<x>B<);>\n"
4389 #: build/C/man3/lgamma.3:26
4391 msgid "B<double lgamma_r(double >I<x>B<, int *>I<signp>B<);>\n"
4395 #: build/C/man3/lgamma.3:28
4397 msgid "B<float lgammaf_r(float >I<x>B<, int *>I<signp>B<);>\n"
4401 #: build/C/man3/lgamma.3:30
4403 msgid "B<long double lgammal_r(long double >I<x>B<, int *>I<signp>B<);>\n"
4407 #: build/C/man3/lgamma.3:32
4409 msgid "B<extern int >I<signgam>B<;>\n"
4413 #: build/C/man3/lgamma.3:43
4414 msgid "B<lgamma>():"
4418 #: build/C/man3/lgamma.3:53
4419 msgid "B<lgammaf>(), B<lgammal>():"
4423 #: build/C/man3/lgamma.3:63
4424 msgid "B<lgamma_r>(), B<lgammaf_r>(), B<lgammal_r>():"
4428 #: build/C/man3/lgamma.3:67
4433 #: build/C/man3/lgamma.3:86
4435 "The B<lgamma>() function returns the natural logarithm of the absolute "
4436 "value of the Gamma function. The sign of the Gamma function is returned in "
4437 "the external integer I<signgam> declared in I<E<lt>math.hE<gt>>. It is 1 "
4438 "when the Gamma function is positive or zero, -1 when it is negative."
4442 #: build/C/man3/lgamma.3:94
4444 "Since using a constant location I<signgam> is not thread-safe, the functions "
4445 "B<lgamma_r>() etc. have been introduced; they return the sign via the "
4446 "argument I<signp>."
4450 #: build/C/man3/lgamma.3:96
4451 msgid "On success, these functions return the natural logarithm of Gamma(x)."
4455 #: build/C/man3/lgamma.3:104
4456 msgid "If I<x> is 1 or 2, +0 is returned."
4460 #: build/C/man3/lgamma.3:120
4462 "If I<x> is a nonpositive integer, a pole error occurs, and the functions "
4463 "return +B<HUGE_VAL>, +B<HUGE_VALF>, or +B<HUGE_VALL>, respectively."
4467 #: build/C/man3/lgamma.3:130 build/C/man3/tgamma.3:92
4469 "If the result overflows, a range error occurs, and the functions return "
4470 "B<HUGE_VAL>, B<HUGE_VALF>, or B<HUGE_VALL>, respectively, with the correct "
4471 "mathematical sign."
4475 #: build/C/man3/lgamma.3:137
4477 msgid "Pole error: I<x> is a nonpositive integer"
4481 #: build/C/man3/lgamma.3:165
4483 "The B<lgamma>() functions are specified in C99 and POSIX.1-2001. "
4484 "I<signgam> is specified in POSIX.1-2001, but not in C99. The B<lgamma_r>() "
4485 "functions are nonstandard, but present on several other systems."
4488 #. http://sources.redhat.com/bugzilla/show_bug.cgi?id=6777
4490 #: build/C/man3/lgamma.3:175
4492 "In glibc 2.9 and earlier, when a pole error occurs, I<errno> is set to "
4493 "B<EDOM>; instead of the POSIX-mandated B<ERANGE>. Since version 2.10, glibc "
4494 "does the right thing."
4498 #: build/C/man3/lgamma.3:177
4499 msgid "B<tgamma>(3)"
4503 #: build/C/man3/log.3:36
4509 #: build/C/man3/log.3:39
4510 msgid "log, logf, logl - natural logarithmic function"
4514 #: build/C/man3/log.3:44
4516 msgid "B<double log(double >I<x>B<);>\n"
4520 #: build/C/man3/log.3:46
4522 msgid "B<float logf(float >I<x>B<);>\n"
4526 #: build/C/man3/log.3:48
4528 msgid "B<long double logl(long double >I<x>B<);>\n"
4532 #: build/C/man3/log.3:60
4533 msgid "B<logf>(), B<logl>():"
4537 #: build/C/man3/log.3:73
4538 msgid "The B<log>() function returns the natural logarithm of I<x>."
4542 #: build/C/man3/log.3:76
4543 msgid "On success, these functions return the natural logarithm of I<x>."
4547 #: build/C/man3/log.3:85
4548 msgid "If I<x> is 1, the result is +0."
4552 #: build/C/man3/log.3:100 build/C/man3/logb.3:111
4554 "If I<x> is zero, then a pole error occurs, and the functions return "
4555 "-B<HUGE_VAL>, -B<HUGE_VALF>, or -B<HUGE_VALL>, respectively."
4559 #: build/C/man3/log.3:105
4561 "If I<x> is negative (including negative infinity), then a domain error "
4562 "occurs, and a NaN (not a number) is returned."
4566 #: build/C/man3/log.3:112 build/C/man3/y0.3:171
4568 msgid "Domain error: I<x> is negative"
4572 #: build/C/man3/log.3:120
4574 msgid "Pole error: I<x> is zero"
4578 #: build/C/man3/log.3:128 build/C/man3/tgamma.3:132
4580 "I<errno> is set to B<ERANGE>. A divide-by-zero floating-point exception "
4581 "(B<FE_DIVBYZERO>) is raised."
4585 #: build/C/man3/log.3:141
4587 "In glibc 2.5 and earlier, taking the B<log>() of a NaN produces a bogus "
4588 "invalid floating-point (B<FE_INVALID>) exception."
4592 #: build/C/man3/log.3:148
4593 msgid "B<cbrt>(3), B<clog>(3), B<log10>(3), B<log1p>(3), B<log2>(3), B<sqrt>(3)"
4597 #: build/C/man3/log10.3:36
4603 #: build/C/man3/log10.3:39
4604 msgid "log10, log10f, log10l - base-10 logarithmic function"
4608 #: build/C/man3/log10.3:44
4610 msgid "B<double log10(double >I<x>B<);>\n"
4614 #: build/C/man3/log10.3:46
4616 msgid "B<float log10f(float >I<x>B<);>\n"
4620 #: build/C/man3/log10.3:48
4622 msgid "B<long double log10l(long double >I<x>B<);>\n"
4626 #: build/C/man3/log10.3:60
4627 msgid "B<log10f>(), B<log10l>():"
4631 #: build/C/man3/log10.3:73
4632 msgid "The B<log10>() function returns the base 10 logarithm of I<x>."
4636 #: build/C/man3/log10.3:76
4637 msgid "On success, these functions return the base 10 logarithm of I<x>."
4641 #: build/C/man3/log10.3:81 build/C/man3/log2.3:81
4643 "For special cases, including where I<x> is 0, 1, negative, infinity, or NaN, "
4648 #: build/C/man3/log10.3:89 build/C/man3/log2.3:89
4650 "For a discussion of the errors that can occur for these functions, see "
4655 #: build/C/man3/log10.3:102
4656 msgid "B<cbrt>(3), B<clog10>(3), B<exp10>(3), B<log>(3), B<log2>(3), B<sqrt>(3)"
4660 #: build/C/man3/log1p.3:29
4666 #: build/C/man3/log1p.3:32
4667 msgid "log1p, log1pf, log1pl - logarithm of 1 plus argument"
4671 #: build/C/man3/log1p.3:37
4673 msgid "B<double log1p(double >I<x>B<);>\n"
4677 #: build/C/man3/log1p.3:39
4679 msgid "B<float log1pf(float >I<x>B<);>\n"
4683 #: build/C/man3/log1p.3:41
4685 msgid "B<long double log1pl(long double >I<x>B<);>\n"
4689 #: build/C/man3/log1p.3:52
4694 #: build/C/man3/log1p.3:63
4695 msgid "B<log1pf>(), B<log1pl>():"
4699 #: build/C/man3/log1p.3:74
4700 msgid "I<log1p(x)> returns a value equivalent to"
4704 #: build/C/man3/log1p.3:77
4706 msgid " log (1 + I<x>)\n"
4710 #: build/C/man3/log1p.3:83
4712 "It is computed in a way that is accurate even if the value of I<x> is near "
4717 #: build/C/man3/log1p.3:86
4718 msgid "On success, these functions return the natural logarithm of I<(1\\ +\\ x)>."
4722 #: build/C/man3/log1p.3:105
4724 "If I<x> is -1, a pole error occurs, and the functions return -B<HUGE_VAL>, "
4725 "-B<HUGE_VALF>, or -B<HUGE_VALL>, respectively."
4728 #. POSIX.1 specifies a possible range error if x is subnormal
4729 #. glibc 2.8 doesn't do this
4731 #: build/C/man3/log1p.3:113
4733 "If I<x> is less than -1 (including negative infinity), a domain error "
4734 "occurs, and a NaN (not a number) is returned."
4738 #: build/C/man3/log1p.3:120
4740 msgid "Domain error: I<x> is less than -1"
4744 #: build/C/man3/log1p.3:128
4746 msgid "Pole error: I<x> is -1"
4753 #: build/C/man3/log1p.3:136 build/C/man3/logb.3:131
4754 msgid "A divide-by-zero floating-point exception (B<FE_DIVBYZERO>) is raised."
4758 #: build/C/man3/log1p.3:149
4759 msgid "B<exp>(3), B<expm1>(3), B<log>(3)"
4763 #: build/C/man3/log2.3:36
4769 #: build/C/man3/log2.3:39
4770 msgid "log2, log2f, log2l - base-2 logarithmic function"
4774 #: build/C/man3/log2.3:44
4776 msgid "B<double log2(double >I<x>B<);>\n"
4780 #: build/C/man3/log2.3:46
4782 msgid "B<float log2f(float >I<x>B<);>\n"
4786 #: build/C/man3/log2.3:48
4788 msgid "B<long double log2l(long double >I<x>B<);>\n"
4792 #: build/C/man3/log2.3:61
4793 msgid "B<log2>(), B<log2f>(), B<log2l>():"
4797 #: build/C/man3/log2.3:73
4798 msgid "The B<log2>() function returns the base 2 logarithm of I<x>."
4802 #: build/C/man3/log2.3:76
4803 msgid "On success, these functions return the base 2 logarithm of I<x>."
4807 #: build/C/man3/log2.3:103
4808 msgid "B<cbrt>(3), B<clog2>(3), B<log>(3), B<log10>(3), B<sqrt>(3)"
4812 #: build/C/man3/logb.3:29
4818 #: build/C/man3/logb.3:32
4819 msgid "logb, logbf, logbl - get exponent of a floating-point value"
4823 #: build/C/man3/logb.3:36
4824 msgid "B<double logb(double >I<x>B<);>"
4828 #: build/C/man3/logb.3:38
4829 msgid "B<float logbf(float >I<x>B<);>"
4833 #: build/C/man3/logb.3:40
4834 msgid "B<long double logbl(long double >I<x>B<);>"
4838 #: build/C/man3/logb.3:50
4843 #: build/C/man3/logb.3:61
4844 msgid "B<logbf>(), B<logbl>():"
4848 #: build/C/man3/logb.3:86
4850 "These functions extract the exponent from the internal floating-point "
4851 "representation of I<x> and return it as a floating-point value. The integer "
4852 "constant B<FLT_RADIX>, defined in I<E<lt>float.hE<gt>>, indicates the radix "
4853 "used for the system's floating-point representation. If B<FLT_RADIX> is 2, "
4854 "B<logb(>I<x>B<)> is equal to B<floor(log2(>I<x>B<))>, except that it is "
4859 #: build/C/man3/logb.3:94
4861 "If I<x> is subnormal, B<logb>() returns the exponent I<x> would have if it "
4866 #: build/C/man3/logb.3:97
4867 msgid "On success, these functions return the exponent of I<x>."
4871 #: build/C/man3/logb.3:116
4873 "If I<x> is negative infinity or positive infinity, then positive infinity is "
4878 #: build/C/man3/logb.3:123
4880 msgid "Pole error: I<x> is 0"
4884 #: build/C/man3/logb.3:148
4885 msgid "B<ilogb>(3), B<log>(3)"
4889 #: build/C/man3/lrint.3:27
4895 #: build/C/man3/lrint.3:30
4896 msgid "lrint, lrintf, lrintl, llrint, llrintf, llrintl - round to nearest integer"
4900 #: build/C/man3/lrint.3:35
4902 msgid "B<long int lrint(double >I<x>B<);>\n"
4906 #: build/C/man3/lrint.3:37
4908 msgid "B<long int lrintf(float >I<x>B<);>\n"
4912 #: build/C/man3/lrint.3:39
4914 msgid "B<long int lrintl(long double >I<x>B<);>\n"
4918 #: build/C/man3/lrint.3:41
4920 msgid "B<long long int llrint(double >I<x>B<);>\n"
4924 #: build/C/man3/lrint.3:43
4926 msgid "B<long long int llrintf(float >I<x>B<);>\n"
4930 #: build/C/man3/lrint.3:45
4932 msgid "B<long long int llrintl(long double >I<x>B<);>\n"
4936 #: build/C/man3/lrint.3:56 build/C/man3/lround.3:57
4937 msgid "All functions shown above:"
4941 #: build/C/man3/lrint.3:68
4943 "These functions round their argument to the nearest integer value, using the "
4944 "current rounding direction (see B<fesetround>(3))."
4948 #: build/C/man3/lrint.3:73
4950 "Note that unlike B<rint>(3), etc., the return type of these functions "
4951 "differs from that of their arguments."
4955 #: build/C/man3/lrint.3:75 build/C/man3/lround.3:78 build/C/man3/rint.3:107 build/C/man3/round.3:77 build/C/man3/trunc.3:65
4956 msgid "These functions return the rounded integer value."
4959 #. The return value is -(LONG_MAX - 1) or -(LLONG_MAX -1)
4961 #: build/C/man3/lrint.3:87 build/C/man3/lround.3:90
4963 "If I<x> is a NaN or an infinity, or the rounded value is too large to be "
4964 "stored in a I<long> (I<long long> in the case of the B<ll*> functions) then "
4965 "a domain error occurs, and the return value is unspecified."
4969 #: build/C/man3/lrint.3:94 build/C/man3/lround.3:97
4971 msgid "Domain error: I<x> is a NaN or infinite, or the rounded value is too large"
4975 #: build/C/man3/lrint.3:118
4977 "B<ceil>(3), B<floor>(3), B<lround>(3), B<nearbyint>(3), B<rint>(3), "
4982 #: build/C/man3/lround.3:27
4988 #: build/C/man3/lround.3:31
4990 "lround, lroundf, lroundl, llround, llroundf, llroundl - round to nearest "
4991 "integer, away from zero"
4995 #: build/C/man3/lround.3:36
4997 msgid "B<long int lround(double >I<x>B<);>\n"
5001 #: build/C/man3/lround.3:38
5003 msgid "B<long int lroundf(float >I<x>B<);>\n"
5007 #: build/C/man3/lround.3:40
5009 msgid "B<long int lroundl(long double >I<x>B<);>\n"
5013 #: build/C/man3/lround.3:42
5015 msgid "B<long long int llround(double >I<x>B<);>\n"
5019 #: build/C/man3/lround.3:44
5021 msgid "B<long long int llroundf(float >I<x>B<);>\n"
5025 #: build/C/man3/lround.3:46
5027 msgid "B<long long int llroundl(long double >I<x>B<);>\n"
5031 #: build/C/man3/lround.3:70
5033 "These functions round their argument to the nearest integer value, rounding "
5034 "away from zero, regardless of the current rounding direction (see "
5039 #: build/C/man3/lround.3:76
5041 "Note that unlike B<round>(3), B<ceil>(3), etc., the return type of these "
5042 "functions differs from that of their arguments."
5046 #: build/C/man3/lround.3:121 build/C/man3/trunc.3:101
5048 "B<ceil>(3), B<floor>(3), B<lrint>(3), B<nearbyint>(3), B<rint>(3), "
5053 #: build/C/man7/math_error.7:26
5059 #: build/C/man7/math_error.7:29
5060 msgid "math_error - detecting errors from mathematical functions"
5064 #: build/C/man7/math_error.7:34
5067 "B<#include E<lt>math.hE<gt>>\n"
5068 "B<#include E<lt>errno.hE<gt>>\n"
5069 "B<#include E<lt>fenv.hE<gt>>\n"
5073 #: build/C/man7/math_error.7:53
5075 "When an error occurs, most library functions indicate this fact by returning "
5076 "a special value (e.g., -1 or NULL). Because they typically return a "
5077 "floating-point number, the mathematical functions declared in "
5078 "I<E<lt>math.hE<gt>> indicate an error using other mechanisms. There are two "
5079 "error-reporting mechanisms: the older one sets I<errno>; the newer one uses "
5080 "the floating-point exception mechanism (the use of B<feclearexcept>(3) and "
5081 "B<fetestexcept>(3), as outlined below) described in B<fenv>(3)."
5085 #: build/C/man7/math_error.7:58
5087 "A portable program that needs to check for an error from a mathematical "
5088 "function should set I<errno> to zero, and make the following call"
5092 #: build/C/man7/math_error.7:62
5094 msgid "feclearexcept(FE_ALL_EXCEPT);\n"
5098 #: build/C/man7/math_error.7:66
5099 msgid "before calling a mathematical function."
5103 #: build/C/man7/math_error.7:72
5105 "Upon return from the mathematical function, if I<errno> is nonzero, or the "
5106 "following call (see B<fenv>(3)) returns nonzero"
5110 #: build/C/man7/math_error.7:77
5113 "fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW |\n"
5119 #. FE_INVALID = 0x01,
5120 #. __FE_DENORM = 0x02,
5121 #. FE_DIVBYZERO = 0x04,
5122 #. FE_OVERFLOW = 0x08,
5123 #. FE_UNDERFLOW = 0x10,
5124 #. FE_INEXACT = 0x20
5127 #: build/C/man7/math_error.7:90
5128 msgid "then an error occurred in the mathematical function."
5132 #: build/C/man7/math_error.7:93
5134 "The error conditions that can occur for mathematical functions are described "
5139 #: build/C/man7/math_error.7:93
5141 msgid "Domain error"
5145 #: build/C/man7/math_error.7:109
5147 "A I<domain error> occurs when a mathematical function is supplied with an "
5148 "argument whose value falls outside the domain for which the function is "
5149 "defined (e.g., giving a negative argument to B<log>(3)). When a domain "
5150 "error occurs, math functions commonly return a NaN (though some functions "
5151 "return a different value in this case); I<errno> is set to B<EDOM>, and an "
5152 "\"invalid\" (B<FE_INVALID>) floating-point exception is raised."
5156 #: build/C/man7/math_error.7:109
5162 #: build/C/man7/math_error.7:133
5164 "A I<pole error> occurs when the mathematical result of a function is an "
5165 "exact infinity (e.g., the logarithm of 0 is negative infinity). When a pole "
5166 "error occurs, the function returns the (signed) value B<HUGE_VAL>, "
5167 "B<HUGE_VALF>, or B<HUGE_VALL>, depending on whether the function result type "
5168 "is I<double>, I<float>, or I<long double>. The sign of the result is that "
5169 "which is mathematically correct for the function. I<errno> is set to "
5170 "B<ERANGE>, and a \"divide-by-zero\" (B<FE_DIVBYZERO>) floating-point "
5171 "exception is raised."
5175 #: build/C/man7/math_error.7:133
5181 #: build/C/man7/math_error.7:140
5183 "A I<range error> occurs when the magnitude of the function result means that "
5184 "it cannot be represented in the result type of the function. The return "
5185 "value of the function depends on whether the range error was an overflow or "
5190 #: build/C/man7/math_error.7:162
5192 "A floating result I<overflows> if the result is finite, but is too large to "
5193 "represented in the result type. When an overflow occurs, the function "
5194 "returns the value B<HUGE_VAL>, B<HUGE_VALF>, or B<HUGE_VALL>, depending on "
5195 "whether the function result type is I<double>, I<float>, or I<long double>. "
5196 "I<errno> is set to B<ERANGE>, and an \"overflow\" (B<FE_OVERFLOW>) "
5197 "floating-point exception is raised."
5201 #: build/C/man7/math_error.7:177
5203 "A floating result I<underflows> if the result is too small to be represented "
5204 "in the result type. If an underflow occurs, a mathematical function "
5205 "typically returns 0.0 (C99 says a function shall return \"an "
5206 "implementation-defined value whose magnitude is no greater than the smallest "
5207 "normalized positive number in the specified type\"). I<errno> may be set to "
5208 "B<ERANGE>, and an \"overflow\" (B<FE_UNDERFLOW>) floating-point exception "
5213 #: build/C/man7/math_error.7:187
5215 "Some functions deliver a range error if the supplied argument value, or the "
5216 "correct function result, would be I<subnormal>. A subnormal value is one "
5217 "that is nonzero, but with a magnitude that is so small that it can't be "
5218 "presented in normalized form (i.e., with a 1 in the most significant bit of "
5219 "the significand). The representation of a subnormal number will contain one "
5220 "or more leading zeros in the significand."
5223 #. See CONFORMANCE in the glibc 2.8 (and earlier) source.
5225 #: build/C/man7/math_error.7:209
5227 "The I<math_errhandling> identifier specified by C99 and POSIX.1-2001 is not "
5228 "supported by glibc. This identifier is supposed to indicate which of the "
5229 "two error-notification mechanisms (I<errno>, exceptions retrievable via "
5230 "B<fettestexcept>(3)) is in use. The standards require that at least one be "
5231 "in use, but permit both to be available. The current (version 2.8) "
5232 "situation under glibc is messy. Most (but not all) functions raise "
5233 "exceptions on errors. Some also set I<errno>. A few functions set "
5234 "I<errno>, but don't raise an exception. A very few functions do neither. "
5235 "See the individual manual pages for details."
5238 #. http://www.securecoding.cert.org/confluence/display/seccode/FLP32-C.+Prevent+or+detect+domain+and+range+errors+in+math+functions
5240 #: build/C/man7/math_error.7:222
5242 "To avoid the complexities of using I<errno> and B<fetestexcept>(3) for "
5243 "error checking, it is often advised that one should instead check for bad "
5244 "argument values before each call. For example, the following code ensures "
5245 "that B<log>(3)'s argument is not a NaN and is not zero (a pole error) or "
5246 "less than zero (a domain error):"
5250 #: build/C/man7/math_error.7:226
5252 msgid "double x, r;\n"
5256 #: build/C/man7/math_error.7:230
5259 "if (isnan(x) || islessequal(x, 0)) {\n"
5260 " /* Deal with NaN / pole error / domain error */\n"
5265 #: build/C/man7/math_error.7:232
5267 msgid "r = log(x);\n"
5271 #: build/C/man7/math_error.7:240
5273 "The discussion on this page does not apply to the complex mathematical "
5274 "functions (i.e., those declared by I<E<lt>complex.hE<gt>>), which in general "
5275 "are not required to return errors by C99 and POSIX.1-2001."
5279 #: build/C/man7/math_error.7:256
5281 "The B<gcc>(1) I<-fno-math-errno> option causes the executable to employ "
5282 "implementations of some mathematical functions that are faster than the "
5283 "standard implementations, but do not set I<errno> on error. (The B<gcc>(1) "
5284 "I<-ffast-math> option also enables I<-fno-math-errno>.) An error can still "
5285 "be tested for using B<fetestexcept>(3)."
5289 #: build/C/man7/math_error.7:265
5291 "B<gcc>(1), B<errno>(3), B<fenv>(3), B<fpclassify>(3), B<INFINITY>(3), "
5292 "B<isgreater>(3), B<matherr>(3), B<nan>(3)"
5296 #: build/C/man7/math_error.7:267
5297 msgid "I<info libc>"
5301 #: build/C/man3/matherr.3:27
5307 #: build/C/man3/matherr.3:27
5313 #: build/C/man3/matherr.3:30
5314 msgid "matherr - SVID math library exception handling"
5318 #: build/C/man3/matherr.3:34
5321 "B<#define _SVID_SOURCE> /* See feature_test_macros(7) */\n"
5322 "B<#include E<lt>math.hE<gt>>\n"
5326 #: build/C/man3/matherr.3:36
5328 msgid "B<int matherr(struct exception *>I<exc>B<);>\n"
5332 #: build/C/man3/matherr.3:38
5334 msgid "B<extern _LIB_VERSION_TYPE _LIB_VERSION;>\n"
5338 #: build/C/man3/matherr.3:51
5340 "The System V Interface Definition (SVID) specifies that various math "
5341 "functions should invoke a function called B<matherr>() if a math exception "
5342 "is detected. This function is called before the math function returns; "
5343 "after B<matherr>() returns, the system then returns to the math function, "
5344 "which in turn returns to the caller."
5348 #: build/C/man3/matherr.3:62
5350 "The B<matherr>() mechanism is supported by glibc, but is now obsolete: new "
5351 "applications should use the techniques described in B<math_error>(7) and "
5352 "B<fenv>(3). This page documents the glibc B<matherr>() mechanism as an aid "
5353 "for maintaining and porting older applications."
5357 #: build/C/man3/matherr.3:75
5359 "To employ B<matherr>(), the programmer must define the B<_SVID_SOURCE> "
5360 "feature test macro (before including I<any> header files), and assign the "
5361 "value B<_SVID_> to the external variable B<_LIB_VERSION>."
5365 #: build/C/man3/matherr.3:87
5367 "The system provides a default version of B<matherr>(). This version does "
5368 "nothing, and returns zero (see below for the significance of this). The "
5369 "default B<matherr>() can be overridden by a programmer-defined version, "
5370 "which will be invoked when an exception occurs. The function is invoked "
5371 "with one argument, a pointer to an I<exception> structure, defined as "
5376 #: build/C/man3/matherr.3:97
5379 "struct exception {\n"
5380 " int type; /* Exception type */\n"
5381 " char *name; /* Name of function causing exception */\n"
5382 " double arg1; /* 1st argument to function */\n"
5383 " double arg2; /* 2nd argument to function */\n"
5384 " double retval; /* Function return value */\n"
5389 #: build/C/man3/matherr.3:103
5390 msgid "The I<type> field has one of the following values:"
5394 #: build/C/man3/matherr.3:103
5400 #: build/C/man3/matherr.3:111
5402 "A domain error occurred (the function argument was outside the range for "
5403 "which the function is defined). The return value depends on the function; "
5404 "I<errno> is set to B<EDOM>."
5408 #: build/C/man3/matherr.3:111
5414 #: build/C/man3/matherr.3:122
5416 "A pole error occurred (the function result is an infinity). The return "
5417 "value in most cases is B<HUGE> (the largest single precision floating-point "
5418 "number), appropriately signed. In most cases, I<errno> is set to B<EDOM>."
5422 #: build/C/man3/matherr.3:122
5428 #: build/C/man3/matherr.3:131
5430 "An overflow occurred. In most cases, the value B<HUGE> is returned, and "
5431 "I<errno> is set to B<ERANGE>."
5435 #: build/C/man3/matherr.3:131
5437 msgid "B<UNDERFLOW>"
5441 #: build/C/man3/matherr.3:138
5442 msgid "An underflow occurred. 0.0 is returned, and I<errno> is set to B<ERANGE>."
5446 #: build/C/man3/matherr.3:138
5452 #: build/C/man3/matherr.3:145
5454 "Total loss of significance. 0.0 is returned, and I<errno> is set to "
5459 #: build/C/man3/matherr.3:145
5465 #: build/C/man3/matherr.3:150
5467 "Partial loss of significance. This value is unused on glibc (and many other "
5472 #: build/C/man3/matherr.3:158
5474 "The I<arg1> and I<arg2> fields are the arguments supplied to the function "
5475 "(I<arg2> is undefined for functions that take only one argument)."
5479 #: build/C/man3/matherr.3:166
5481 "The I<retval> field specifies the return value that the math function will "
5482 "return to its caller. The programmer-defined B<matherr>() can modify this "
5483 "field to change the return value of the math function."
5487 #: build/C/man3/matherr.3:173
5489 "If the B<matherr>() function returns zero, then the system sets I<errno> as "
5490 "described above, and may print an error message on standard error (see "
5495 #: build/C/man3/matherr.3:179
5497 "If the B<matherr>() function returns a nonzero value, then the system does "
5498 "not set I<errno>, and doesn't print an error message."
5502 #: build/C/man3/matherr.3:179
5504 msgid "Math functions that employ matherr()"
5508 #: build/C/man3/matherr.3:189
5510 "The table below lists the functions and circumstances in which B<matherr>() "
5511 "is called. The \"Type\" column indicates the value assigned to "
5512 "I<exc-E<gt>type> when calling B<matherr>(). The \"Result\" column is the "
5513 "default return value assigned to I<exc-E<gt>retval>."
5517 #: build/C/man3/matherr.3:195
5519 "The \"Msg?\" and \"errno\" columns describe the default behavior if "
5520 "B<matherr>() returns zero. If the \"Msg?\" columns contains \"y\", then "
5521 "the system prints an error message on standard error."
5525 #: build/C/man3/matherr.3:197
5526 msgid "The table uses the following notations and abbreviations:"
5530 #: build/C/man3/matherr.3:209
5533 "x first argument to function\n"
5534 "y second argument to function\n"
5535 "fin finite value for argument\n"
5536 "neg negative value for argument\n"
5537 "int integral value for argument\n"
5538 "o/f result overflowed\n"
5539 "u/f result underflowed\n"
5540 "|x| absolute value of x\n"
5541 "X_TLOSS is a constant defined in I<E<lt>math.hE<gt>>\n"
5545 #: build/C/man3/matherr.3:216
5547 msgid "Function\tType\tResult\tMsg?\terrno\n"
5551 #: build/C/man3/matherr.3:217
5553 msgid "acos(|x|E<gt>1)\tDOMAIN\tHUGE\ty\tEDOM\n"
5557 #: build/C/man3/matherr.3:218
5559 msgid "asin(|x|E<gt>1)\tDOMAIN\tHUGE\ty\tEDOM\n"
5563 #: build/C/man3/matherr.3:219
5565 msgid "atan2(0,0)\tDOMAIN\tHUGE\ty\tEDOM\n"
5568 #. retval is 0.0/0.0
5570 #: build/C/man3/matherr.3:220
5572 msgid "acosh(xE<lt>1)\tDOMAIN\tNAN\ty\tEDOM\t\n"
5575 #. retval is 0.0/0.0
5577 #: build/C/man3/matherr.3:221
5579 msgid "atanh(|x|E<gt>1)\tDOMAIN\tNAN\ty\tEDOM\t\n"
5584 #: build/C/man3/matherr.3:222
5586 msgid "atanh(|x|==1)\tSING\t(xE<gt>0.0)?\ty\tEDOM\t\n"
5590 #: build/C/man3/matherr.3:223 build/C/man3/matherr.3:268
5592 msgid "\\ \t\\ \tHUGE_VAL :\n"
5596 #: build/C/man3/matherr.3:224 build/C/man3/matherr.3:269
5598 msgid "\\ \t\\ \t-HUGE_VAL\n"
5602 #: build/C/man3/matherr.3:225
5604 msgid "cosh(fin) o/f\tOVERFLOW\tHUGE\tn\tERANGE\n"
5608 #: build/C/man3/matherr.3:226
5610 msgid "sinh(fin) o/f\tOVERFLOW\t(xE<gt>0.0) ?\tn\tERANGE\n"
5614 #: build/C/man3/matherr.3:227
5616 msgid "\\ \t\\ \tHUGE : -HUGE\n"
5620 #: build/C/man3/matherr.3:228
5622 msgid "sqrt(xE<lt>0)\tDOMAIN\t0.0\ty\tEDOM\n"
5626 #: build/C/man3/matherr.3:229
5628 msgid "hypot(fin,fin) o/f\tOVERFLOW\tHUGE\tn\tERANGE\n"
5632 #: build/C/man3/matherr.3:230
5634 msgid "exp(fin) o/f\tOVERFLOW\tHUGE\tn\tERANGE\n"
5638 #: build/C/man3/matherr.3:231
5640 msgid "exp(fin) u/f\tUNDERFLOW\t0.0\tn\tERANGE\n"
5644 #: build/C/man3/matherr.3:232
5646 msgid "exp2(fin) o/f\tOVERFLOW\tHUGE\tn\tERANGE\n"
5650 #: build/C/man3/matherr.3:233
5652 msgid "exp2(fin) u/f\tUNDERFLOW\t0.0\tn\tERANGE\n"
5656 #: build/C/man3/matherr.3:234
5658 msgid "exp10(fin) o/f\tOVERFLOW\tHUGE\tn\tERANGE\n"
5662 #: build/C/man3/matherr.3:235
5664 msgid "exp10(fin) u/f\tUNDERFLOW\t0.0\tn\tERANGE\n"
5668 #: build/C/man3/matherr.3:236
5670 msgid "j0(|x|E<gt>X_TLOSS)\tTLOSS\t0.0\ty\tERANGE\n"
5674 #: build/C/man3/matherr.3:237
5676 msgid "j1(|x|E<gt>X_TLOSS)\tTLOSS\t0.0\ty\tERANGE\n"
5680 #: build/C/man3/matherr.3:238
5682 msgid "jn(|x|E<gt>X_TLOSS)\tTLOSS\t0.0\ty\tERANGE\n"
5686 #: build/C/man3/matherr.3:239
5688 msgid "y0(xE<gt>X_TLOSS)\tTLOSS\t0.0\ty\tERANGE\n"
5692 #: build/C/man3/matherr.3:240
5694 msgid "y1(xE<gt>X_TLOSS)\tTLOSS\t0.0\ty\tERANGE\n"
5698 #: build/C/man3/matherr.3:241
5700 msgid "yn(xE<gt>X_TLOSS)\tTLOSS\t0.0\ty\tERANGE\n"
5704 #: build/C/man3/matherr.3:242
5706 msgid "y0(0)\tDOMAIN\t-HUGE\ty\tEDOM\n"
5710 #: build/C/man3/matherr.3:243
5712 msgid "y0(xE<lt>0)\tDOMAIN\t-HUGE\ty\tEDOM\n"
5716 #: build/C/man3/matherr.3:244
5718 msgid "y1(0)\tDOMAIN\t-HUGE\ty\tEDOM\n"
5722 #: build/C/man3/matherr.3:245
5724 msgid "y1(xE<lt>0)\tDOMAIN\t-HUGE\ty\tEDOM\n"
5728 #: build/C/man3/matherr.3:246
5730 msgid "yn(n,0)\tDOMAIN\t-HUGE\ty\tEDOM\n"
5734 #: build/C/man3/matherr.3:247
5736 msgid "yn(xE<lt>0)\tDOMAIN\t-HUGE\ty\tEDOM\n"
5740 #: build/C/man3/matherr.3:248
5742 msgid "lgamma(fin) o/f\tOVERFLOW\tHUGE\tn\tERANGE\n"
5746 #: build/C/man3/matherr.3:249
5748 msgid "lgamma(-int) or\tSING\tHUGE\ty\tEDOM\n"
5752 #: build/C/man3/matherr.3:250
5754 msgid "\\ \\ lgamma(0)\n"
5758 #: build/C/man3/matherr.3:251
5760 msgid "tgamma(fin) o/f\tOVERFLOW\tHUGE_VAL\tn\tERANGE\n"
5764 #: build/C/man3/matherr.3:252
5766 msgid "tgamma(-int)\tSING\tNAN\ty\tEDOM\n"
5770 #: build/C/man3/matherr.3:253
5772 msgid "tgamma(0)\tSING\tcopysign(\ty\tERANGE\n"
5776 #: build/C/man3/matherr.3:254
5778 msgid "\\ \t\\ \tHUGE_VAL,x)\n"
5782 #: build/C/man3/matherr.3:255
5784 msgid "log(0)\tSING\t-HUGE\ty\tEDOM\n"
5788 #: build/C/man3/matherr.3:256
5790 msgid "log(xE<lt>0)\tDOMAIN\t-HUGE\ty\tEDOM\n"
5793 #. different from log()
5795 #: build/C/man3/matherr.3:257
5797 msgid "log2(0)\tSING\t-HUGE\tn\tEDOM\t\n"
5800 #. different from log()
5802 #: build/C/man3/matherr.3:258
5804 msgid "log2(xE<lt>0)\tDOMAIN\t-HUGE\tn\tEDOM\t\n"
5808 #: build/C/man3/matherr.3:259
5810 msgid "log10(0)\tSING\t-HUGE\ty\tEDOM\n"
5814 #: build/C/man3/matherr.3:260
5816 msgid "log10(xE<lt>0)\tDOMAIN\t-HUGE\ty\tEDOM\n"
5820 #: build/C/man3/matherr.3:261
5822 msgid "pow(0.0,0.0)\tDOMAIN\t0.0\ty\tEDOM\n"
5826 #: build/C/man3/matherr.3:262
5828 msgid "pow(x,y) o/f\tOVERFLOW\tHUGE\tn\tERANGE\n"
5832 #: build/C/man3/matherr.3:263
5834 msgid "pow(x,y) u/f\tUNDERFLOW\t0.0\tn\tERANGE\n"
5838 #: build/C/man3/matherr.3:264
5840 msgid "pow(NaN,0.0)\tDOMAIN\tx\tn\tEDOM\n"
5845 #: build/C/man3/matherr.3:265
5847 msgid "0**neg\tDOMAIN\t0.0\ty\tEDOM\t\n"
5851 #: build/C/man3/matherr.3:266
5853 msgid "neg**non-int\tDOMAIN\t0.0\ty\tEDOM\n"
5857 #: build/C/man3/matherr.3:267
5859 msgid "scalb() o/f\tOVERFLOW\t(xE<gt>0.0) ?\tn\tERANGE\n"
5863 #: build/C/man3/matherr.3:270
5865 msgid "scalb() u/f\tUNDERFLOW\tcopysign(\tn\tERANGE\n"
5869 #: build/C/man3/matherr.3:271
5871 msgid "\\ \t\\ \t\\ \\ 0.0,x)\n"
5875 #: build/C/man3/matherr.3:272
5877 msgid "fmod(x,0)\tDOMAIN\tx\ty\tEDOM\n"
5880 #. retval is 0.0/0.0
5882 #: build/C/man3/matherr.3:273
5884 msgid "remainder(x,0)\tDOMAIN\tNAN\ty\tEDOM\t\n"
5888 #: build/C/man3/matherr.3:296
5890 "The example program demonstrates the use of B<matherr>() when calling "
5891 "B<log>(3). The program takes up to three command-line arguments. The first "
5892 "argument is the floating-point number to be given to B<log>(3). If the "
5893 "optional second argument is provided, then B<_LIB_VERSION> is set to "
5894 "B<_SVID_> so that B<matherr>() is called, and the integer supplied in the "
5895 "command-line argument is used as the return value from B<matherr>(). If the "
5896 "optional third command-line argument is supplied, then it specifies an "
5897 "alternative return value that B<matherr>() should assign as the return "
5898 "value of the math function."
5902 #: build/C/man3/matherr.3:301
5904 "The following example run, where B<log>(3) is given an argument of 0.0, "
5905 "does not use B<matherr>():"
5909 #: build/C/man3/matherr.3:307
5912 "$B< ./a.out 0.0>\n"
5913 "errno: Numerical result out of range\n"
5918 #: build/C/man3/matherr.3:313
5919 msgid "In the following run, B<matherr>() is called, and returns 0:"
5923 #: build/C/man3/matherr.3:323
5926 "$B< ./a.out 0.0 0>\n"
5927 "matherr SING exception in log() function\n"
5928 " args: 0.000000, 0.000000\n"
5929 " retval: -340282346638528859811704183484516925440.000000\n"
5931 "errno: Numerical argument out of domain\n"
5932 "x=-340282346638528859811704183484516925440.000000\n"
5936 #: build/C/man3/matherr.3:327
5937 msgid "The message \"log: SING error\" was printed by the C library."
5941 #: build/C/man3/matherr.3:331
5942 msgid "In the following run, B<matherr>() is called, and returns a nonzero value:"
5946 #: build/C/man3/matherr.3:339
5949 "$B< ./a.out 0.0 1>\n"
5950 "matherr SING exception in log() function\n"
5951 " args: 0.000000, 0.000000\n"
5952 " retval: -340282346638528859811704183484516925440.000000\n"
5953 "x=-340282346638528859811704183484516925440.000000\n"
5957 #: build/C/man3/matherr.3:345
5959 "In this case, the C library did not print a message, and I<errno> was not "
5964 #: build/C/man3/matherr.3:350
5966 "In the following run, B<matherr>() is called, changes the return value of "
5967 "the math function, and returns a nonzero value:"
5971 #: build/C/man3/matherr.3:358
5974 "$B< ./a.out 0.0 1 12345.0>\n"
5975 "matherr SING exception in log() function\n"
5976 " args: 0.000000, 0.000000\n"
5977 " retval: -340282346638528859811704183484516925440.000000\n"
5982 #: build/C/man3/matherr.3:368
5985 "#define _SVID_SOURCE\n"
5986 "#include E<lt>errno.hE<gt>\n"
5987 "#include E<lt>math.hE<gt>\n"
5988 "#include E<lt>stdio.hE<gt>\n"
5989 "#include E<lt>stdlib.hE<gt>\n"
5993 #: build/C/man3/matherr.3:374
5996 "static int matherr_ret = 0; /* Value that matherr()\n"
5997 " should return */\n"
5998 "static int change_retval = 0; /* Should matherr() change\n"
5999 " function\\(aqs return value? */\n"
6000 "static double new_retval; /* New function return value */\n"
6004 #: build/C/man3/matherr.3:389
6008 "matherr(struct exception *exc)\n"
6010 " fprintf(stderr, \"matherr %s exception in %s() function\\en\",\n"
6011 " (exc-E<gt>type == DOMAIN) ? \"DOMAIN\" :\n"
6012 " (exc-E<gt>type == OVERFLOW) ? \"OVERFLOW\" :\n"
6013 " (exc-E<gt>type == UNDERFLOW) ? \"UNDERFLOW\" :\n"
6014 " (exc-E<gt>type == SING) ? \"SING\" :\n"
6015 " (exc-E<gt>type == TLOSS) ? \"TLOSS\" :\n"
6016 " (exc-E<gt>type == PLOSS) ? \"PLOSS\" : \"???\",\n"
6017 " exc-E<gt>name);\n"
6018 " fprintf(stderr, \" args: %f, %f\\en\",\n"
6019 " exc-E<gt>arg1, exc-E<gt>arg2);\n"
6020 " fprintf(stderr, \" retval: %f\\en\", exc-E<gt>retval);\n"
6024 #: build/C/man3/matherr.3:392
6027 " if (change_retval)\n"
6028 " exc-E<gt>retval = new_retval;\n"
6032 #: build/C/man3/matherr.3:395
6035 " return matherr_ret;\n"
6040 #: build/C/man3/matherr.3:400
6044 "main(int argc, char *argv[])\n"
6050 #: build/C/man3/matherr.3:406
6053 " if (argc E<lt> 2) {\n"
6054 " fprintf(stderr, \"Usage: %s E<lt>argvalE<gt>\"\n"
6055 " \" [E<lt>matherr-retE<gt> "
6056 "[E<lt>new-func-retvalE<gt>]]\\en\", argv[0]);\n"
6057 " exit(EXIT_FAILURE);\n"
6062 #: build/C/man3/matherr.3:411
6065 " if (argc E<gt> 2) {\n"
6066 " _LIB_VERSION = _SVID_;\n"
6067 " matherr_ret = atoi(argv[2]);\n"
6072 #: build/C/man3/matherr.3:416
6075 " if (argc E<gt> 3) {\n"
6076 " change_retval = 1;\n"
6077 " new_retval = atof(argv[3]);\n"
6082 #: build/C/man3/matherr.3:420
6085 " x = log(atof(argv[1]));\n"
6086 " if (errno != 0)\n"
6087 " perror(\"errno\");\n"
6091 #: build/C/man3/matherr.3:424
6094 " printf(\"x=%f\\en\", x);\n"
6095 " exit(EXIT_SUCCESS);\n"
6100 #: build/C/man3/matherr.3:429
6101 msgid "B<fenv>(3), B<math_error>(7), B<standards>(7)"
6105 #: build/C/man3/modf.3:33
6111 #: build/C/man3/modf.3:37
6113 "modf, modff, modfl - extract signed integral and fractional values from "
6114 "floating-point number"
6118 #: build/C/man3/modf.3:42
6120 msgid "B<double modf(double >I<x>B<, double *>I<iptr>B<);>\n"
6124 #: build/C/man3/modf.3:44
6126 msgid "B<float modff(float >I<x>B<, float *>I<iptr>B<);>\n"
6130 #: build/C/man3/modf.3:46
6132 msgid "B<long double modfl(long double >I<x>B<, long double *>I<iptr>B<);>\n"
6136 #: build/C/man3/modf.3:58
6137 msgid "B<modf>(), B<modfl>():"
6141 #: build/C/man3/modf.3:76
6143 "The B<modf>() function breaks the argument I<x> into an integral part and a "
6144 "fractional part, each of which has the same sign as I<x>. The integral part "
6145 "is stored in the location pointed to by I<iptr>."
6149 #: build/C/man3/modf.3:81
6150 msgid "The B<modf>() function returns the fractional part of I<x>."
6154 #: build/C/man3/modf.3:87
6155 msgid "If I<x> is a NaN, a NaN is returned, and I<*iptr> is set to a NaN."
6159 #: build/C/man3/modf.3:93
6161 "If I<x> is positive infinity (negative infinity), +0 (-0) is returned, and "
6162 "I<*iptr> is set to positive infinity (negative infinity)."
6166 #: build/C/man3/modf.3:103
6167 msgid "The B<modf>(), B<modff>(), and B<modfl>() functions are thread-safe."
6171 #: build/C/man3/modf.3:112
6172 msgid "B<frexp>(3), B<ldexp>(3)"
6176 #: build/C/man3/nan.3:11
6182 #: build/C/man3/nan.3:14
6183 msgid "nan, nanf, nanl - return 'Not a Number'"
6187 #: build/C/man3/nan.3:18
6188 msgid "B<double nan(const char *>I<tagp>B<);>"
6192 #: build/C/man3/nan.3:20
6193 msgid "B<float nanf(const char *>I<tagp>B<);>"
6197 #: build/C/man3/nan.3:22
6198 msgid "B<long double nanl(const char *>I<tagp>B<);>"
6202 #: build/C/man3/nan.3:34
6203 msgid "B<nan>(), B<nanf>(), B<nanl>():"
6207 #: build/C/man3/nan.3:48
6209 "These functions return a representation (determined by I<tagp>) of a quiet "
6210 "NaN. If the implementation does not support quiet NaNs, these functions "
6215 #: build/C/man3/nan.3:52
6216 msgid "The call I<nan(\"char-sequence\")> is equivalent to:"
6220 #: build/C/man3/nan.3:55
6222 msgid " strtod(\"NAN(char-sequence)\", NULL);\n"
6226 #: build/C/man3/nan.3:65
6228 "Similarly, calls to B<nanf>() and B<nanl>() are equivalent to analogous "
6229 "calls to B<strtof>(3) and B<strtold>(3)."
6233 #: build/C/man3/nan.3:73
6235 "The argument I<tagp> is used in an unspecified manner. On IEEE 754 systems, "
6236 "there are many representations of NaN, and I<tagp> selects one. On other "
6237 "systems it may do nothing."
6241 #: build/C/man3/nan.3:79
6243 "C99, POSIX.1-2001. See also IEC 559 and the appendix with recommended "
6244 "functions in IEEE 754/IEEE 854."
6248 #: build/C/man3/nan.3:83
6249 msgid "B<isnan>(3), B<strtod>(3), B<math_error>(7)"
6253 #: build/C/man3/nextafter.3:11
6259 #: build/C/man3/nextafter.3:15
6261 "nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl - "
6262 "floating-point number manipulation"
6266 #: build/C/man3/nextafter.3:19
6267 msgid "B<double nextafter(double >I<x>B<, double >I<y>B<);>"
6271 #: build/C/man3/nextafter.3:21
6272 msgid "B<float nextafterf(float >I<x>B<, float >I<y>B<);>"
6276 #: build/C/man3/nextafter.3:23
6277 msgid "B<long double nextafterl(long double >I<x>B<, long double >I<y>B<);>"
6281 #: build/C/man3/nextafter.3:25
6282 msgid "B<double nexttoward(double >I<x>B<, long double >I<y>B<);>"
6286 #: build/C/man3/nextafter.3:27
6287 msgid "B<float nexttowardf(float >I<x>B<, long double >I<y>B<);>"
6291 #: build/C/man3/nextafter.3:29
6292 msgid "B<long double nexttowardl(long double >I<x>B<, long double >I<y>B<);>"
6296 #: build/C/man3/nextafter.3:39
6297 msgid "B<nextafter>():"
6301 #: build/C/man3/nextafter.3:51
6302 msgid "B<nextafterf>(), B<nextafterl>():"
6306 #: build/C/man3/nextafter.3:62
6307 msgid "B<nexttoward>(), B<nexttowardf>(), B<nexttowardl>():"
6311 #: build/C/man3/nextafter.3:83
6313 "The B<nextafter>() functions return the next representable floating-point "
6314 "value following I<x> in the direction of I<y>. If I<y> is less than I<x>, "
6315 "these functions will return the largest representable number less than I<x>."
6319 #: build/C/man3/nextafter.3:90
6320 msgid "If I<x> equals I<y>, the functions return I<y>."
6324 #: build/C/man3/nextafter.3:98
6326 "The B<nexttoward>() functions do the same as the B<nextafter>() functions, "
6327 "except that they have a I<long double> second argument."
6331 #: build/C/man3/nextafter.3:104
6333 "On success, these functions return the next representable floating-point "
6334 "value after I<x> in the direction of I<y>."
6338 #: build/C/man3/nextafter.3:114
6339 msgid "If I<x> equals I<y>, then I<y> (cast to the same type as I<x>) is returned."
6344 #: build/C/man3/nextafter.3:134
6346 "If I<x> is finite, and the result would overflow, a range error occurs, and "
6347 "the functions return B<HUGE_VAL>, B<HUGE_VALF>, or B<HUGE_VALL>, "
6348 "respectively, with the correct mathematical sign."
6352 #: build/C/man3/nextafter.3:143
6354 "If I<x> is not equal to I<y>, and the correct function result would be "
6355 "subnormal, zero, or underflow, a range error occurs, and either the correct "
6356 "value (if it can be represented), or 0.0, is returned."
6360 #: build/C/man3/nextafter.3:159
6362 msgid "Range error: result is subnormal or underflows"
6366 #: build/C/man3/nextafter.3:182
6368 "In glibc version 2.5 and earlier, these functions do not raise an underflow "
6369 "floating-point (B<FE_UNDERFLOW>) exception when an underflow occurs."
6373 #: build/C/man3/nextafter.3:184
6374 msgid "B<nearbyint>(3)"
6378 #: build/C/man3/pow.3:35
6384 #: build/C/man3/pow.3:38
6385 msgid "pow, powf, powl - power functions"
6389 #: build/C/man3/pow.3:43
6391 msgid "B<double pow(double >I<x>B<, double >I<y>B<);>\n"
6395 #: build/C/man3/pow.3:45
6397 msgid "B<float powf(float >I<x>B<, float >I<y>B<);>\n"
6401 #: build/C/man3/pow.3:47
6403 msgid "B<long double powl(long double >I<x>B<, long double >I<y>B<);>\n"
6407 #: build/C/man3/pow.3:59
6408 msgid "B<powf>(), B<powl>():"
6412 #: build/C/man3/pow.3:75
6414 "The B<pow>() function returns the value of I<x> raised to the power of "
6419 #: build/C/man3/pow.3:80
6420 msgid "On success, these functions return the value of I<x> to the power of I<y>."
6423 #. The domain error is generated at least as far back as glibc 2.4
6425 #: build/C/man3/pow.3:88
6427 "If I<x> is a finite value less than 0, and I<y> is a finite noninteger, a "
6428 "domain error occurs, and a NaN is returned."
6431 #. The range error is generated at least as far back as glibc 2.4
6433 #: build/C/man3/pow.3:98
6435 "If the result overflows, a range error occurs, and the functions return "
6436 "B<HUGE_VAL>, B<HUGE_VALF>, or B<HUGE_VALL>, respectively, with the "
6437 "mathematically correct sign."
6440 #. POSIX.1 does not specify the sign of the zero,
6441 #. but http://sources.redhat.com/bugzilla/show_bug.cgi?id=2678
6442 #. points out that the zero has the wrong sign in some cases.
6444 #: build/C/man3/pow.3:105
6446 "If result underflows, and is not representable, a range error occurs, and "
6451 #: build/C/man3/pow.3:111
6452 msgid "Except as specified below, if I<x> or I<y> is a NaN, the result is a NaN."
6456 #: build/C/man3/pow.3:117
6457 msgid "If I<x> is +1, the result is 1.0 (even if I<y> is a NaN)."
6461 #: build/C/man3/pow.3:123
6462 msgid "If I<y> is 0, the result is 1.0 (even if I<x> is a NaN)."
6466 #: build/C/man3/pow.3:131
6468 "If I<x> is +0 (-0), and I<y> is an odd integer greater than 0, the result is "
6473 #: build/C/man3/pow.3:139
6475 "If I<x> is 0, and I<y> greater than 0 and not an odd integer, the result is "
6480 #: build/C/man3/pow.3:147
6482 "If I<x> is -1, and I<y> is positive infinity or negative infinity, the "
6487 #: build/C/man3/pow.3:155
6489 "If the absolute value of I<x> is less than 1, and I<y> is negative infinity, "
6490 "the result is positive infinity."
6494 #: build/C/man3/pow.3:163
6496 "If the absolute value of I<x> is greater than 1, and I<y> is negative "
6497 "infinity, the result is +0."
6501 #: build/C/man3/pow.3:171
6503 "If the absolute value of I<x> is less than 1, and I<y> is positive infinity, "
6508 #: build/C/man3/pow.3:179
6510 "If the absolute value of I<x> is greater than 1, and I<y> is positive "
6511 "infinity, the result is positive infinity."
6515 #: build/C/man3/pow.3:187
6517 "If I<x> is negative infinity, and I<y> is an odd integer less than 0, the "
6522 #: build/C/man3/pow.3:195
6524 "If I<x> is negative infinity, and I<y> less than 0 and not an odd integer, "
6529 #: build/C/man3/pow.3:203
6531 "If I<x> is negative infinity, and I<y> is an odd integer greater than 0, the "
6532 "result is negative infinity."
6536 #: build/C/man3/pow.3:211
6538 "If I<x> is negative infinity, and I<y> greater than 0 and not an odd "
6539 "integer, the result is positive infinity."
6543 #: build/C/man3/pow.3:219
6544 msgid "If I<x> is positive infinity, and I<y> less than 0, the result is +0."
6548 #: build/C/man3/pow.3:227
6550 "If I<x> is positive infinity, and I<y> greater than 0, the result is "
6551 "positive infinity."
6555 #: build/C/man3/pow.3:242
6557 "If I<x> is +0 or -0, and I<y> is an odd integer less than 0, a pole error "
6558 "occurs and B<HUGE_VAL>, B<HUGE_VALF>, or B<HUGE_VALL>, is returned, with the "
6559 "same sign as I<x>."
6562 #. The pole error is generated at least as far back as glibc 2.4
6564 #: build/C/man3/pow.3:256
6566 "If I<x> is +0 or -0, and I<y> is less than 0 and not an odd integer, a pole "
6567 "error occurs and +B<HUGE_VAL>, +B<HUGE_VALF>, or +B<HUGE_VALL>, is returned."
6571 #: build/C/man3/pow.3:283
6573 msgid "Domain error: I<x> is negative, and I<y> is a finite noninteger"
6577 #: build/C/man3/pow.3:291
6579 msgid "Pole error: I<x> is zero, and I<y> is negative"
6583 #: build/C/man3/pow.3:300
6585 msgid "Range error: the result overflows"
6589 #: build/C/man3/pow.3:308
6591 msgid "Range error: the result underflows"
6595 #. http://sources.redhat.com/bugzilla/show_bug.cgi?id=6776
6596 #. or possibly 2.9, I haven't found the source code change
6597 #. and I don't have a 2.9 system to test
6599 #: build/C/man3/pow.3:336
6601 "In glibc 2.9 and earlier, when a pole error occurs, I<errno> is set to "
6602 "B<EDOM> instead of the POSIX-mandated B<ERANGE>. Since version 2.10, glibc "
6603 "does the right thing."
6606 #. see bug http://sources.redhat.com/bugzilla/show_bug.cgi?id=3866
6607 #. and http://sources.redhat.com/bugzilla/show_bug.cgi?id=369
6609 #: build/C/man3/pow.3:356
6611 "If I<x> is negative, then large negative or positive I<y> values yield a NaN "
6612 "as the function result, with I<errno> set to B<EDOM>, and an invalid "
6613 "(B<FE_INVALID>) floating-point exception. For example, with B<pow>(), one "
6614 "sees this behavior when the absolute value of I<y> is greater than about "
6618 #. FIXME . Actually, 2.3.2 is the earliest test result I have; so yet
6619 #. to confirm if this error occurs only in 2.3.2.
6621 #: build/C/man3/pow.3:365
6623 "In version 2.3.2 and earlier, when an overflow or underflow error occurs, "
6624 "glibc's B<pow>() generates a bogus invalid floating-point exception "
6625 "(B<FE_INVALID>) in addition to the overflow or underflow exception."
6629 #: build/C/man3/pow.3:369
6630 msgid "B<cbrt>(3), B<cpow>(3), B<sqrt>(3)"
6634 #: build/C/man3/pow10.3:25
6640 #: build/C/man3/pow10.3:28
6641 msgid "pow10, pow10f, pow10l - base-10 power functions"
6645 #: build/C/man3/pow10.3:32 build/C/man3/sincos.3:16
6648 "B<#define _GNU_SOURCE> /* See feature_test_macros(7) */\n"
6649 "B<#include E<lt>math.hE<gt>>\n"
6653 #: build/C/man3/pow10.3:34
6655 msgid "B<double pow10(double >I<x>B<);>\n"
6659 #: build/C/man3/pow10.3:36
6661 msgid "B<float pow10f(float >I<x>B<);>\n"
6665 #: build/C/man3/pow10.3:38
6667 msgid "B<long double pow10l(long double >I<x>B<);>\n"
6671 #: build/C/man3/pow10.3:47
6672 msgid "The B<pow10>() function returns the value of 10 raised to the power I<x>."
6676 #: build/C/man3/pow10.3:51
6677 msgid "This is a GNU extension."
6681 #: build/C/man3/pow10.3:54
6682 msgid "These functions are identical to the functions listed under B<exp10>(3)."
6686 #: build/C/man3/pow10.3:57
6687 msgid "B<exp10>(3), B<pow>(3)"
6691 #: build/C/man3/remainder.3:37
6697 #: build/C/man3/remainder.3:41
6699 "drem, dremf, dreml, remainder, remainderf, remainderl - floating-point "
6700 "remainder function"
6704 #: build/C/man3/remainder.3:49
6707 "/* The C99 versions */\n"
6708 "B<double remainder(double >I<x>B<, double >I<y>B<);>\n"
6709 "B<float remainderf(float >I<x>B<, float >I<y>B<);>\n"
6710 "B<long double remainderl(long double >I<x>B<, long double >I<y>B<);>\n"
6714 #: build/C/man3/remainder.3:54
6717 "/* Obsolete synonyms */\n"
6718 "B<double drem(double >I<x>B<, double >I<y>B<);>\n"
6719 "B<float dremf(float >I<x>B<, float >I<y>B<);>\n"
6720 "B<long double dreml(long double >I<x>B<, long double >I<y>B<);>\n"
6724 #: build/C/man3/remainder.3:65
6725 msgid "B<remainder>():"
6729 #: build/C/man3/remainder.3:70
6731 "_SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE\\ E<gt>=\\ 500 || "
6732 "_XOPEN_SOURCE\\ &&\\ _XOPEN_SOURCE_EXTENDED || _ISOC99_SOURCE || "
6733 "_POSIX_C_SOURCE\\ E<gt>=\\ 200112L;"
6737 #: build/C/man3/remainder.3:77
6738 msgid "B<remainderf>(), B<remainderl>():"
6742 #: build/C/man3/remainder.3:88
6743 msgid "B<drem>(), B<dremf>(), B<dreml>():"
6747 #: build/C/man3/remainder.3:90 build/C/man3/significand.3:35
6748 msgid "_SVID_SOURCE || _BSD_SOURCE"
6752 #: build/C/man3/remainder.3:111
6754 "The B<remainder>() function computes the remainder of dividing I<x> by "
6755 "I<y>. The return value is I<x>-I<n>*I<y>, where I<n> is the value I<x\\ /\\ "
6756 "y>, rounded to the nearest integer. If the absolute value of I<x>-I<n>*I<y> "
6757 "is 0.5, I<n> is chosen to be even."
6761 #: build/C/man3/remainder.3:114
6763 "These functions are unaffected by the current rounding mode (see "
6768 #: build/C/man3/remainder.3:118
6769 msgid "The B<drem>() function does precisely the same thing."
6773 #: build/C/man3/remainder.3:124
6775 "On success, these functions return the floating-point remainder, "
6776 "I<x>-I<n>*I<y>. If the return value is 0, it has the sign of I<x>."
6780 #: build/C/man3/remainder.3:139 build/C/man3/remquo.3:92
6782 "If I<x> is an infinity, and I<y> is not a NaN, a domain error occurs, and a "
6787 #: build/C/man3/remainder.3:150 build/C/man3/remquo.3:101
6789 "If I<y> is zero, and I<x> is not a NaN, a domain error occurs, and a NaN is "
6794 #: build/C/man3/remainder.3:157
6796 msgid "Domain error: I<x> is an infinity and I<y> is not a NaN"
6801 #: build/C/man3/remainder.3:188
6803 "The functions B<remainder>(), B<remainderf>(), and B<remainderl>() are "
6804 "specified in C99 and POSIX.1-2001."
6808 #: build/C/man3/remainder.3:204
6810 "The function B<drem>() is from 4.3BSD. The I<float> and I<long double> "
6811 "variants B<dremf>() and B<dreml>() exist on some systems, such as Tru64 "
6812 "and glibc2. Avoid the use of these functions in favor of B<remainder>() "
6817 #: build/C/man3/remainder.3:206
6822 #: build/C/man3/remainder.3:208
6824 msgid " remainder(nan(\"\"), 0);\n"
6827 #. FIXME . this bug occurs as at glibc 2.8.
6828 #. Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6779
6830 #: build/C/man3/remainder.3:213
6832 "returns a NaN, as expected, but wrongly causes a domain error; it should "
6833 "yield a silent NaN."
6837 #: build/C/man3/remainder.3:215
6838 msgid "The call \"remainder(29.0, 3.0)\" returns -1."
6842 #: build/C/man3/remainder.3:219
6843 msgid "B<div>(3), B<fmod>(3), B<remquo>(3)"
6847 #: build/C/man3/remquo.3:12
6853 #: build/C/man3/remquo.3:15
6854 msgid "remquo, remquof, remquol - remainder and part of quotient"
6858 #: build/C/man3/remquo.3:20
6860 msgid "B<double remquo(double >I<x>B<, double >I<y>B<, int *>I<quo>B<);>\n"
6864 #: build/C/man3/remquo.3:22
6866 msgid "B<float remquof(float >I<x>B<, float >I<y>B<, int *>I<quo>B<);>\n"
6870 #: build/C/man3/remquo.3:24
6873 "B<long double remquol(long double >I<x>B<, long double >I<y>B<, int "
6878 #: build/C/man3/remquo.3:37
6879 msgid "B<remquo>(), B<remquof>(), B<remquol>():"
6883 #: build/C/man3/remquo.3:55
6885 "These functions compute the remainder and part of the quotient upon division "
6886 "of I<x> by I<y>. A few bits of the quotient are stored via the I<quo> "
6887 "pointer. The remainder is returned as the function result."
6891 #: build/C/man3/remquo.3:59
6893 "The value of the remainder is the same as that computed by the "
6894 "B<remainder>(3) function."
6898 #: build/C/man3/remquo.3:65
6900 "The value stored via the I<quo> pointer has the sign of I<x\\ /\\ y> and "
6901 "agrees with the quotient in at least the low order 3 bits."
6904 #. A possible application of this function might be the computation
6905 #. of sin(x). Compute remquo(x, pi/2, &quo) or so.
6907 #. glibc, UnixWare: return 3 bits
6908 #. MacOS 10: return 7 bits
6910 #: build/C/man3/remquo.3:73
6912 "For example, I<remquo(29.0,\\ 3.0)> returns -1.0 and might store 2. Note "
6913 "that the actual quotient might not fit in an integer."
6917 #: build/C/man3/remquo.3:77
6919 "On success, these functions return the same value as the analogous functions "
6920 "described in B<remainder>(3)."
6924 #: build/C/man3/remquo.3:108
6927 "Domain error: I<x> is an infinity or I<y> is 0, and the other argument is "
6932 #: build/C/man3/remquo.3:130
6933 msgid "B<fmod>(3), B<logb>(3), B<remainder>(3)"
6937 #: build/C/man3/rint.3:27
6943 #: build/C/man3/rint.3:31
6945 "nearbyint, nearbyintf, nearbyintl, rint, rintf, rintl - round to nearest "
6950 #: build/C/man3/rint.3:36
6952 msgid "B<double nearbyint(double >I<x>B<);>\n"
6956 #: build/C/man3/rint.3:38
6958 msgid "B<float nearbyintf(float >I<x>B<);>\n"
6962 #: build/C/man3/rint.3:40
6964 msgid "B<long double nearbyintl(long double >I<x>B<);>\n"
6968 #: build/C/man3/rint.3:42
6970 msgid "B<double rint(double >I<x>B<);>\n"
6974 #: build/C/man3/rint.3:44
6976 msgid "B<float rintf(float >I<x>B<);>\n"
6980 #: build/C/man3/rint.3:46
6982 msgid "B<long double rintl(long double >I<x>B<);>\n"
6986 #: build/C/man3/rint.3:59
6987 msgid "B<nearbyint>(), B<nearbyintf>(), B<nearbyintl>():"
6991 #: build/C/man3/rint.3:61
6993 "_XOPEN_SOURCE\\ E<gt>=\\ 600 || _POSIX_C_SOURCE\\ E<gt>=\\ 200112L || "
6998 #: build/C/man3/rint.3:67
7003 #: build/C/man3/rint.3:78
7004 msgid "B<rintf>(), B<rintl>():"
7008 #: build/C/man3/rint.3:95
7010 "The B<nearbyint>() functions round their argument to an integer value in "
7011 "floating-point format, using the current rounding direction (see "
7012 "B<fesetround>(3)) and without raising the I<inexact> exception."
7016 #: build/C/man3/rint.3:105
7018 "The B<rint>() functions do the same, but will raise the I<inexact> "
7019 "exception (B<FE_INEXACT>, checkable via B<fetestexcept>(3)) when the result "
7020 "differs in value from the argument."
7024 #: build/C/man3/rint.3:138
7026 "If you want to store the rounded value in an integer type, you probably want "
7027 "to use one of the functions described in B<lrint>(3) instead."
7031 #: build/C/man3/rint.3:144
7032 msgid "B<ceil>(3), B<floor>(3), B<lrint>(3), B<round>(3), B<trunc>(3)"
7036 #: build/C/man3/round.3:27
7042 #: build/C/man3/round.3:30
7043 msgid "round, roundf, roundl - round to nearest integer, away from zero"
7047 #: build/C/man3/round.3:35
7049 msgid "B<double round(double >I<x>B<);>\n"
7053 #: build/C/man3/round.3:37
7055 msgid "B<float roundf(float >I<x>B<);>\n"
7059 #: build/C/man3/round.3:39
7061 msgid "B<long double roundl(long double >I<x>B<);>\n"
7065 #: build/C/man3/round.3:52
7066 msgid "B<round>(), B<roundf>(), B<roundl>():"
7070 #: build/C/man3/round.3:69
7072 "These functions round I<x> to the nearest integer, but round halfway cases "
7073 "away from zero (regardless of the current rounding direction, see "
7074 "B<fenv>(3)), instead of to the nearest even integer like B<rint>(3)."
7078 #: build/C/man3/round.3:75
7079 msgid "For example, I<round(0.5)> is 1.0, and I<round(-0.5)> is -1.0."
7083 #: build/C/man3/round.3:96
7084 msgid "The B<round>(), B<roundf>(), and B<roundl>() functions are thread-safe."
7087 #. The POSIX.1-2001 APPLICATION USAGE SECTION discusses this point.
7089 #: build/C/man3/round.3:114
7091 "POSIX.1-2001 contains text about overflow (which might set I<errno> to "
7092 "B<ERANGE>, or raise an B<FE_OVERFLOW> exception). In practice, the result "
7093 "cannot overflow on any current machine, so this error-handling stuff is just "
7094 "nonsense. (More precisely, overflow can happen only when the maximum value "
7095 "of the exponent is smaller than the number of mantissa bits. For the "
7096 "IEEE-754 standard 32-bit and 64-bit floating-point numbers the maximum value "
7097 "of the exponent is 128 (respectively, 1024), and the number of mantissa bits "
7098 "is 24 (respectively, 53).)"
7102 #: build/C/man3/round.3:119
7104 "If you want to store the rounded value in an integer type, you probably want "
7105 "to use one of the functions described in B<lround>(3) instead."
7109 #: build/C/man3/round.3:126
7111 "B<ceil>(3), B<floor>(3), B<lround>(3), B<nearbyint>(3), B<rint>(3), "
7116 #: build/C/man3/scalb.3:27
7122 #: build/C/man3/scalb.3:27
7128 #: build/C/man3/scalb.3:31
7130 "scalb, scalbf, scalbl - multiply floating-point number by integral power of "
7135 #: build/C/man3/scalb.3:35
7136 msgid "B<double scalb(double >I<x>B<, double >I<exp>B<);>"
7140 #: build/C/man3/scalb.3:37
7141 msgid "B<float scalbf(float >I<x>B<, float >I<exp>B<);>"
7145 #: build/C/man3/scalb.3:39
7146 msgid "B<long double scalbl(long double >I<x>B<, long double >I<exp>B<);>"
7150 #: build/C/man3/scalb.3:49
7155 #: build/C/man3/scalb.3:52
7157 "_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\\ E<gt>=\\ 500 || "
7158 "_XOPEN_SOURCE\\ &&\\ _XOPEN_SOURCE_EXTENDED"
7162 #: build/C/man3/scalb.3:56
7163 msgid "B<scalbf>(), B<scalbl>():"
7167 #: build/C/man3/scalb.3:69 build/C/man3/scalbln.3:85
7169 "These functions multiply their first argument I<x> by B<FLT_RADIX> (probably "
7170 "2) to the power of I<exp>, that is:"
7174 #: build/C/man3/scalb.3:72 build/C/man3/scalbln.3:88
7176 msgid " x * FLT_RADIX ** exp\n"
7179 #. not in /usr/include but in a gcc lib
7181 #: build/C/man3/scalb.3:79 build/C/man3/scalbln.3:95
7183 "The definition of B<FLT_RADIX> can be obtained by including "
7184 "I<E<lt>float.hE<gt>>."
7188 #: build/C/man3/scalb.3:86 build/C/man3/scalbln.3:102
7189 msgid "On success, these functions return I<x> * B<FLT_RADIX> ** I<exp>."
7193 #: build/C/man3/scalb.3:92
7194 msgid "If I<x> or I<exp> is a NaN, a NaN is returned."
7198 #: build/C/man3/scalb.3:100
7200 "If I<x> is positive infinity (negative infinity), and I<exp> is not negative "
7201 "infinity, positive infinity (negative infinity) is returned."
7205 #: build/C/man3/scalb.3:106
7207 "If I<x> is +0 (-0), and I<exp> is not positive infinity, +0 (-0) is "
7212 #: build/C/man3/scalb.3:114
7214 "If I<x> is zero, and I<exp> is positive infinity, a domain error occurs, and "
7215 "a NaN is returned."
7219 #: build/C/man3/scalb.3:123
7221 "If I<x> is an infinity, and I<exp> is negative infinity, a domain error "
7222 "occurs, and a NaN is returned."
7226 #: build/C/man3/scalb.3:138 build/C/man3/scalbln.3:130
7228 "If the result underflows, a range error occurs, and the functions return "
7229 "zero, with a sign the same as I<x>."
7233 #: build/C/man3/scalb.3:145
7236 "Domain error: I<x> is 0, and I<exp> is positive infinity, or I<x> is "
7237 "positive infinity and I<exp> is negative infinity and the other argument is "
7242 #: build/C/man3/scalb.3:191
7244 "B<scalb>() is specified in POSIX.1-2001, but marked obsolescent. "
7245 "POSIX.1-2008 removes the specification of B<scalb>(), recommending the use "
7246 "of B<scalbln>(3), B<scalblnf>(3), or B<scalblnl>(3) instead. The "
7247 "B<scalb>() function is from 4.3BSD."
7250 #. Looking at header files: scalbf() is present on the
7251 #. BSDs, Tru64, HP-UX 11, Irix 6.5; scalbl() is on HP-UX 11 and Tru64.
7253 #: build/C/man3/scalb.3:200
7255 "B<scalbf>() and B<scalbl>() are unstandardized; B<scalbf>() is "
7256 "nevertheless present on several other systems"
7260 #: build/C/man3/scalb.3:203
7261 msgid "B<ldexp>(3), B<scalbln>(3)"
7265 #: build/C/man3/scalbln.3:27
7271 #: build/C/man3/scalbln.3:31
7273 "scalbn, scalbnf, scalbnl, scalbln, scalblnf, scalblnl - multiply "
7274 "floating-point number by integral power of radix"
7278 #: build/C/man3/scalbln.3:35
7279 msgid "B<double scalbln(double >I<x>B<, long int >I<exp>B<);>"
7283 #: build/C/man3/scalbln.3:37
7284 msgid "B<float scalblnf(float >I<x>B<, long int >I<exp>B<);>"
7288 #: build/C/man3/scalbln.3:39
7289 msgid "B<long double scalblnl(long double >I<x>B<, long int >I<exp>B<);>"
7293 #: build/C/man3/scalbln.3:41
7294 msgid "B<double scalbn(double >I<x>B<, int >I<exp>B<);>"
7298 #: build/C/man3/scalbln.3:43
7299 msgid "B<float scalbnf(float >I<x>B<, int >I<exp>B<);>"
7303 #: build/C/man3/scalbln.3:45
7304 msgid "B<long double scalbnl(long double >I<x>B<, int >I<exp>B<);>"
7308 #: build/C/man3/scalbln.3:57
7309 msgid "B<scalbln>(), B<scalblnf>(), B<scalblnl>():"
7313 #: build/C/man3/scalbln.3:68
7314 msgid "B<scalbn>(), B<scalbnf>(), B<scalbnl>():"
7318 #: build/C/man3/scalbln.3:171
7320 "The B<scalbn>(), B<scalbnf>(), B<scalbnl>(), B<scalbln>(), B<scalblnf>(), "
7321 "and B<scalblnl>() functions are thread-safe."
7325 #: build/C/man3/scalbln.3:182
7327 "These functions differ from the obsolete functions described in B<scalb>(3) "
7328 "in the type of their second argument. The functions described on this page "
7329 "have a second argument of an integral type, while those in B<scalb>(3) have "
7330 "a second argument of type I<double>."
7334 #: build/C/man3/scalbln.3:189
7336 "If B<FLT_RADIX> equals 2 (which is usual), then B<scalbn>() is equivalent "
7341 #: build/C/man3/scalbln.3:192
7342 msgid "B<ldexp>(3), B<scalb>(3)"
7346 #: build/C/man3/signbit.3:11
7352 #: build/C/man3/signbit.3:11
7358 #: build/C/man3/signbit.3:14
7359 msgid "signbit - test sign of a real floating-point number"
7363 #: build/C/man3/signbit.3:18
7364 msgid "B<int signbit(>I<x>B<);>"
7368 #: build/C/man3/signbit.3:28
7369 msgid "B<signbit>():"
7373 #: build/C/man3/signbit.3:42
7375 "B<signbit>() is a generic macro which can work on all real floating-point "
7376 "types. It returns a nonzero value if the value of I<x> has its sign bit "
7381 #: build/C/man3/signbit.3:51
7383 "This is not the same as I<x E<lt> 0.0>, because IEEE 754 floating point "
7384 "allows zero to be signed. The comparison I<-0.0 E<lt> 0.0> is false, but "
7385 "I<signbit(-0.0)> will return a nonzero value."
7389 #: build/C/man3/signbit.3:53
7390 msgid "NaNs and infinities have a sign bit."
7394 #: build/C/man3/signbit.3:59
7396 "The B<signbit>() macro returns nonzero if the sign of I<x> is negative; "
7397 "otherwise it returns zero."
7401 #: build/C/man3/signbit.3:66
7402 msgid "The B<signbit>() macro is thread-safe."
7406 #: build/C/man3/signbit.3:72
7407 msgid "B<copysign>(3)"
7411 #: build/C/man3/significand.3:9
7417 #: build/C/man3/significand.3:9
7423 #: build/C/man3/significand.3:13
7425 "significand, significandf, significandl - get mantissa of floating-point "
7430 #: build/C/man3/significand.3:17
7431 msgid "B<double significand(double >I<x>B<);>"
7435 #: build/C/man3/significand.3:19
7436 msgid "B<float significandf(float >I<x>B<);>"
7440 #: build/C/man3/significand.3:21
7441 msgid "B<long double significandl(long double >I<x>B<);>"
7445 #: build/C/man3/significand.3:33
7446 msgid "B<significand>(), B<significandf>(), B<significandl>():"
7450 #: build/C/man3/significand.3:44
7452 "The B<significand>() function returns the mantissa of I<x> scaled to the "
7453 "range [1,2). It is equivalent to"
7457 #: build/C/man3/significand.3:47
7458 msgid "scalb(x, (double) -ilogb(x))"
7462 #: build/C/man3/significand.3:51
7464 "This function exists mainly for use in certain standardized tests for IEEE "
7469 #. This function came from BSD.
7471 #: build/C/man3/significand.3:57
7473 "These functions are nonstandard; the I<double> version is available on a "
7474 "number of other systems."
7478 #: build/C/man3/significand.3:60
7479 msgid "B<ilogb>(3), B<scalb>(3)"
7483 #: build/C/man3/sin.3:35
7489 #: build/C/man3/sin.3:38
7490 msgid "sin, sinf, sinl - sine function"
7494 #: build/C/man3/sin.3:43
7496 msgid "B<double sin(double >I<x>B<);>\n"
7500 #: build/C/man3/sin.3:45
7502 msgid "B<float sinf(float >I<x>B<);>\n"
7506 #: build/C/man3/sin.3:47
7508 msgid "B<long double sinl(long double >I<x>B<);>\n"
7512 #: build/C/man3/sin.3:59
7513 msgid "B<sinf>(), B<sinl>():"
7517 #: build/C/man3/sin.3:76
7519 "The B<sin>() function returns the sine of I<x>, where I<x> is given in "
7524 #: build/C/man3/sin.3:79
7525 msgid "On success, these functions return the sine of I<x>."
7529 #: build/C/man3/sin.3:130
7531 "B<acos>(3), B<asin>(3), B<atan>(3), B<atan2>(3), B<cos>(3), B<csin>(3), "
7532 "B<sincos>(3), B<tan>(3)"
7536 #: build/C/man3/sincos.3:9
7542 #: build/C/man3/sincos.3:12
7543 msgid "sincos, sincosf, sincosl - calculate sin and cos simultaneously"
7547 #: build/C/man3/sincos.3:18
7549 msgid "B<void sincos(double >I<x>B<, double *>I<sin>B<, double *>I<cos>B<);>\n"
7553 #: build/C/man3/sincos.3:20
7555 msgid "B<void sincosf(float >I<x>B<, float *>I<sin>B<, float *>I<cos>B<);>\n"
7559 #: build/C/man3/sincos.3:22
7562 "B<void sincosl(long double >I<x>B<, long double *>I<sin>B<, long double "
7567 #: build/C/man3/sincos.3:32
7569 "Several applications need sine and cosine of the same angle I<x>. This "
7570 "function computes both at the same time, and stores the results in I<*sin> "
7575 #: build/C/man3/sincos.3:40
7576 msgid "If I<x> is a NaN, a NaN is returned in I<*sin> and I<*cos>."
7580 #: build/C/man3/sincos.3:49
7582 "If I<x> is positive infinity or negative infinity, a domain error occurs, "
7583 "and a NaN is returned in I<*sin> and I<*cos>."
7587 #: build/C/man3/sincos.3:52
7588 msgid "These functions return I<void>."
7592 #: build/C/man3/sincos.3:77
7593 msgid "This function is a GNU extension."
7597 #: build/C/man3/sincos.3:81
7598 msgid "B<cos>(3), B<sin>(3), B<tan>(3)"
7602 #: build/C/man3/sinh.3:36
7608 #: build/C/man3/sinh.3:39
7609 msgid "sinh, sinhf, sinhl - hyperbolic sine function"
7613 #: build/C/man3/sinh.3:44
7615 msgid "B<double sinh(double >I<x>B<);>\n"
7619 #: build/C/man3/sinh.3:46
7621 msgid "B<float sinhf(float >I<x>B<);>\n"
7625 #: build/C/man3/sinh.3:48
7627 msgid "B<long double sinhl(long double >I<x>B<);>\n"
7631 #: build/C/man3/sinh.3:60
7632 msgid "B<sinhf>(), B<sinhl>():"
7636 #: build/C/man3/sinh.3:75
7638 "The B<sinh>() function returns the hyperbolic sine of I<x>, which is "
7639 "defined mathematically as:"
7643 #: build/C/man3/sinh.3:78
7645 msgid " sinh(x) = (exp(x) - exp(-x)) / 2\n"
7649 #: build/C/man3/sinh.3:82
7650 msgid "On success, these functions return the hyperbolic sine of I<x>."
7654 #. POSIX.1-2001 documents an optional range error (underflow)
7656 #. glibc 2.8 does not do this.
7658 #: build/C/man3/sinh.3:109
7660 "If the result overflows, a range error occurs, and the functions return "
7661 "B<HUGE_VAL>, B<HUGE_VALF>, or B<HUGE_VALL>, respectively, with the same sign "
7666 #: build/C/man3/sinh.3:137
7667 msgid "B<acosh>(3), B<asinh>(3), B<atanh>(3), B<cosh>(3), B<csinh>(3), B<tanh>(3)"
7671 #: build/C/man3/sqrt.3:34
7677 #: build/C/man3/sqrt.3:37
7678 msgid "sqrt, sqrtf, sqrtl - square root function"
7682 #: build/C/man3/sqrt.3:42
7684 msgid "B<double sqrt(double >I<x>B<);>\n"
7688 #: build/C/man3/sqrt.3:44
7690 msgid "B<float sqrtf(float >I<x>B<);>\n"
7694 #: build/C/man3/sqrt.3:46
7696 msgid "B<long double sqrtl(long double >I<x>B<);>\n"
7700 #: build/C/man3/sqrt.3:58
7701 msgid "B<sqrtf>(), B<sqrtl>():"
7705 #: build/C/man3/sqrt.3:71
7706 msgid "The B<sqrt>() function returns the nonnegative square root of I<x>."
7710 #: build/C/man3/sqrt.3:74
7711 msgid "On success, these functions return the square root of I<x>."
7715 #: build/C/man3/sqrt.3:92
7716 msgid "If I<x> is less than -0, a domain error occurs, and a NaN is returned."
7720 #: build/C/man3/sqrt.3:99
7722 msgid "Domain error: I<x> less than -0"
7726 #: build/C/man3/sqrt.3:117
7727 msgid "B<cbrt>(3), B<csqrt>(3), B<hypot>(3)"
7731 #: build/C/man3/tan.3:35
7737 #: build/C/man3/tan.3:38
7738 msgid "tan, tanf, tanl - tangent function"
7742 #: build/C/man3/tan.3:43
7744 msgid "B<double tan(double >I<x>B<);>\n"
7748 #: build/C/man3/tan.3:45
7750 msgid "B<float tanf(float >I<x>B<);>\n"
7754 #: build/C/man3/tan.3:47
7756 msgid "B<long double tanl(long double >I<x>B<);>\n"
7760 #: build/C/man3/tan.3:59
7761 msgid "B<tanf>(), B<tanl>():"
7765 #: build/C/man3/tan.3:76
7767 "The B<tan>() function returns the tangent of I<x>, where I<x> is given in "
7772 #: build/C/man3/tan.3:79
7773 msgid "On success, these functions return the tangent of I<x>."
7776 #. I think overflow can't occur, because the closest floating-point
7777 #. representation of pi/2 is still not close enough to pi/2 to
7778 #. produce a large enough value to overflow.
7779 #. Testing certainly seems to bear this out. -- mtk, Jul 08
7781 #. POSIX.1 allows an optional underflow error;
7782 #. glibc 2.8 doesn't do this
7783 #. POSIX.1 an optional range error for subnormal x;
7784 #. glibc 2.8 doesn't do this
7786 #: build/C/man3/tan.3:107
7788 "If the correct result would overflow, a range error occurs, and the "
7789 "functions return B<HUGE_VAL>, B<HUGE_VALF>, or B<HUGE_VALL>, respectively, "
7790 "with the mathematically correct sign."
7794 #: build/C/man3/tan.3:154
7796 "B<acos>(3), B<asin>(3), B<atan>(3), B<atan2>(3), B<cos>(3), B<ctan>(3), "
7801 #: build/C/man3/tanh.3:35
7807 #: build/C/man3/tanh.3:38
7808 msgid "tanh, tanhf, tanhl - hyperbolic tangent function"
7812 #: build/C/man3/tanh.3:43
7814 msgid "B<double tanh(double >I<x>B<);>\n"
7818 #: build/C/man3/tanh.3:45
7820 msgid "B<float tanhf(float >I<x>B<);>\n"
7824 #: build/C/man3/tanh.3:47
7826 msgid "B<long double tanhl(long double >I<x>B<);>\n"
7830 #: build/C/man3/tanh.3:59
7831 msgid "B<tanhf>(), B<tanhl>():"
7835 #: build/C/man3/tanh.3:74
7837 "The B<tanh>() function returns the hyperbolic tangent of I<x>, which is "
7838 "defined mathematically as:"
7842 #: build/C/man3/tanh.3:77
7844 msgid " tanh(x) = sinh(x) / cosh(x)\n"
7848 #: build/C/man3/tanh.3:81
7849 msgid "On success, these functions return the hyperbolic tangent of I<x>."
7853 #: build/C/man3/tanh.3:113
7854 msgid "B<acosh>(3), B<asinh>(3), B<atanh>(3), B<cosh>(3), B<ctanh>(3), B<sinh>(3)"
7858 #: build/C/man3/tgamma.3:13
7864 #: build/C/man3/tgamma.3:16
7865 msgid "tgamma, tgammaf, tgammal - true gamma function"
7869 #: build/C/man3/tgamma.3:20
7870 msgid "B<double tgamma(double >I<x>B<);>"
7874 #: build/C/man3/tgamma.3:22
7875 msgid "B<float tgammaf(float >I<x>B<);>"
7879 #: build/C/man3/tgamma.3:24
7880 msgid "B<long double tgammal(long double >I<x>B<);>"
7884 #: build/C/man3/tgamma.3:36
7885 msgid "B<tgamma>(), B<tgammaf>(), B<tgammal>():"
7889 #: build/C/man3/tgamma.3:46
7890 msgid "The Gamma function is defined by"
7894 #: build/C/man3/tgamma.3:48
7896 msgid " Gamma(x) = integral from 0 to infinity of t^(x-1) e^-t dt\n"
7900 #: build/C/man3/tgamma.3:53
7902 "It is defined for every real number except for nonpositive integers. For "
7903 "nonnegative integral I<m> one has"
7907 #: build/C/man3/tgamma.3:55
7909 msgid " Gamma(m+1) = m!\n"
7913 #: build/C/man3/tgamma.3:58
7914 msgid "and, more generally, for all I<x>:"
7918 #: build/C/man3/tgamma.3:60
7920 msgid " Gamma(x+1) = x * Gamma(x)\n"
7924 #: build/C/man3/tgamma.3:64
7926 "Furthermore, the following is valid for all values of I<x> outside the "
7931 #: build/C/man3/tgamma.3:66
7933 msgid " Gamma(x) * Gamma(1 - x) = PI / sin(PI * x)\n"
7937 #: build/C/man3/tgamma.3:69
7938 msgid "On success, these functions return Gamma(x)."
7942 #: build/C/man3/tgamma.3:83
7944 "If I<x> is a negative integer, or is negative infinity, a domain error "
7945 "occurs, and a NaN is returned."
7949 #: build/C/man3/tgamma.3:96
7951 "If the result underflows, a range error occurs, and the functions return 0, "
7952 "with the correct mathematical sign."
7956 #: build/C/man3/tgamma.3:107
7958 "If I<x> is -0 or +0, a pole error occurs, and the functions return "
7959 "B<HUGE_VAL>, B<HUGE_VALF>, or B<HUGE_VALL>, respectively, with the same sign "
7964 #: build/C/man3/tgamma.3:114
7966 msgid "Domain error: I<x> is a negative integer, or negative infinity"
7969 #. FIXME . errno is not set to EDOM for x == -inf
7970 #. Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6809
7972 #: build/C/man3/tgamma.3:124
7974 "I<errno> is set to B<EDOM>. An invalid floating-point exception "
7975 "(B<FE_INVALID>) is raised (but see BUGS)."
7979 #: build/C/man3/tgamma.3:124
7981 msgid "Pole error: I<x> is +0 or -0"
7985 #: build/C/man3/tgamma.3:143
7987 "glibc also gives the following error which is not specified in C99 or "
7991 #. FIXME . Is it intentional that errno is not set:
7992 #. Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6810
7994 #. glibc (as at 2.8) also supports and an inexact
7995 #. exception for various cases.
7997 #: build/C/man3/tgamma.3:160
7998 msgid "I<errno> is not set for this case."
8002 #: build/C/man3/tgamma.3:171
8004 "This function had to be called \"true gamma function\" since there is "
8005 "already a function B<gamma>(3) that returns something else (see B<gamma>(3) "
8009 #. Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6809
8011 #: build/C/man3/tgamma.3:179
8013 "If I<x> is negative infinity, I<errno> is not set (it should be set to "
8018 #: build/C/man3/tgamma.3:188
8020 "In glibc versions 2.3.3 and earlier, an argument of +0 or -0 incorrectly "
8021 "produced a domain error (I<errno> set to B<EDOM> and an B<FE_INVALID> "
8022 "exception raised), rather than a pole error."
8026 #: build/C/man3/tgamma.3:191
8027 msgid "B<gamma>(3), B<lgamma>(3)"
8031 #: build/C/man3/trunc.3:25
8037 #: build/C/man3/trunc.3:28
8038 msgid "trunc, truncf, truncl - round to integer, toward zero"
8042 #: build/C/man3/trunc.3:33
8044 msgid "B<double trunc(double >I<x>B<);>\n"
8048 #: build/C/man3/trunc.3:35
8050 msgid "B<float truncf(float >I<x>B<);>\n"
8054 #: build/C/man3/trunc.3:37
8056 msgid "B<long double truncl(long double >I<x>B<);>\n"
8060 #: build/C/man3/trunc.3:50
8061 msgid "B<trunc>(), B<truncf>(), B<truncl>():"
8065 #: build/C/man3/trunc.3:63
8067 "These functions round I<x> to the nearest integer not larger in absolute "
8072 #: build/C/man3/trunc.3:71
8073 msgid "If I<x> is integral, infinite, or NaN, I<x> itself is returned."
8077 #: build/C/man3/trunc.3:83
8078 msgid "The B<trunc>(), B<truncf>(), and B<truncl>() functions are thread-safe."
8082 #: build/C/man3/y0.3:36
8088 #: build/C/man3/y0.3:36
8094 #: build/C/man3/y0.3:40
8096 "y0, y0f, y0l, y1, y1f, y1l, yn, ynf, ynl - Bessel functions of the second "
8101 #: build/C/man3/y0.3:45
8103 msgid "B<double y0(double >I<x>B<);>\n"
8107 #: build/C/man3/y0.3:47
8109 msgid "B<double y1(double >I<x>B<);>\n"
8113 #: build/C/man3/y0.3:49
8115 msgid "B<double yn(int >I<n>B<, double >I<x>B<);>\n"
8119 #: build/C/man3/y0.3:51
8121 msgid "B<float y0f(float >I<x>B<);>\n"
8125 #: build/C/man3/y0.3:53
8127 msgid "B<float y1f(float >I<x>B<);>\n"
8131 #: build/C/man3/y0.3:55
8133 msgid "B<float ynf(int >I<n>B<, float >I<x>B<);>\n"
8137 #: build/C/man3/y0.3:57
8139 msgid "B<long double y0l(long double >I<x>B<);>\n"
8143 #: build/C/man3/y0.3:59
8145 msgid "B<long double y1l(long double >I<x>B<);>\n"
8149 #: build/C/man3/y0.3:61
8151 msgid "B<long double ynl(int >I<n>B<, long double >I<x>B<);>\n"
8155 #: build/C/man3/y0.3:74
8156 msgid "B<y0>(), B<y1>(), B<yn>():"
8160 #: build/C/man3/y0.3:84
8161 msgid "B<y0f>(), B<y0l>(), B<y1f>(), B<y1l>(), B<ynf>(), B<ynl>():"
8165 #: build/C/man3/y0.3:105
8167 "The B<y0>() and B<y1>() functions return Bessel functions of I<x> of the "
8168 "second kind of orders 0 and 1, respectively. The B<yn>() function returns "
8169 "the Bessel function of I<x> of the second kind of order I<n>."
8173 #: build/C/man3/y0.3:109
8174 msgid "The value of I<x> must be positive."
8178 #: build/C/man3/y0.3:119
8180 "The B<y0f>() etc. and B<y0l>() etc. functions are versions that take and "
8181 "return I<float> and I<long double> values, respectively."
8185 #: build/C/man3/y0.3:123
8187 "On success, these functions return the appropriate Bessel value of the "
8188 "second kind for I<x>."
8192 #: build/C/man3/y0.3:139
8194 "If I<x> is negative, a domain error occurs, and the functions return "
8195 "-B<HUGE_VAL>, -B<HUGE_VALF>, or -B<HUGE_VALL>, respectively. (POSIX.1-2001 "
8196 "also allows a NaN return for this case.)"
8200 #: build/C/man3/y0.3:150
8202 "If I<x> is 0.0, a pole error occurs, and the functions return -B<HUGE_VAL>, "
8203 "-B<HUGE_VALF>, or -B<HUGE_VALL>, respectively."
8207 #: build/C/man3/y0.3:154
8208 msgid "If the result underflows, a range error occurs, and the functions return 0.0"
8212 #: build/C/man3/y0.3:164
8214 "If the result overflows, a range error occurs, and the functions return "
8215 "-B<HUGE_VAL>, -B<HUGE_VALF>, or -B<HUGE_VALL>, respectively. (POSIX.1-2001 "
8216 "also allows a 0.0 return for this case.)"
8220 #: build/C/man3/y0.3:179
8222 msgid "Pole error: I<x> is 0.0"
8225 #. Before POSIX.1-2001 TC2, this was (inconsistently) specified
8226 #. as a range error.
8227 #. FIXME . y0(0.0) gives EDOM
8228 #. Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6808
8230 #: build/C/man3/y0.3:194
8232 "I<errno> is set to B<ERANGE> (but see BUGS). No B<FE_DIVBYZERO> exception "
8233 "is returned by B<fetestexcept>(3) for this case."
8236 #. e.g., y0(1e33) on glibc 2.8/x86-32
8237 #. An underflow floating-point exception
8238 #. .RB ( FE_UNDERFLOW )
8240 #. FIXME . Is it intentional that these functions do not use FE_*?
8241 #. Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6806
8243 #: build/C/man3/y0.3:210
8245 "I<errno> is set to B<ERANGE>. No B<FE_UNDERFLOW> exception is returned by "
8246 "B<fetestexcept>(3) for this case."
8249 #. e.g., yn(10, 1e-40) on glibc 2.8/x86-32
8253 #. FIXME . Is it intentional that errno is not set?
8254 #. Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6808
8256 #: build/C/man3/y0.3:223
8258 "I<errno> is not set for this case. An overflow floating-point exception "
8259 "(B<FE_OVERFLOW>) is raised."
8263 #. Bug raised: http://sourceware.org/bugzilla/show_bug.cgi?id=6807
8265 #: build/C/man3/y0.3:239
8267 "On a pole error, these functions set I<errno> to B<EDOM>, instead of "
8268 "B<ERANGE> as POSIX.1-2004 requires."
8271 #. FIXME . Actually, 2.3.2 is the earliest test result I have; so yet
8272 #. to confirm if this error occurs only in 2.3.2.
8274 #: build/C/man3/y0.3:246
8276 "In glibc version 2.3.2 and earlier, these functions do not raise an invalid "
8277 "floating-point exception (B<FE_INVALID>) when a domain error occurs."
8281 #: build/C/man3/y0.3:248