/* Declarations for math functions.
- Copyright (C) 1991,92,93,95,96,97,98,99,2001 Free Software Foundation, Inc.
+ Copyright (C) 1991-1993, 1995-1999, 2001, 2002, 2004, 2006
+ Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
/*
* ISO C99 Standard: 7.12 Mathematics <math.h>
/* Get machine-dependent HUGE_VAL value (returned on overflow).
On all IEEE754 machines, this is +Infinity. */
#include <bits/huge_val.h>
+#ifdef __USE_ISOC99
+# include <bits/huge_valf.h>
+# include <bits/huge_vall.h>
+
+/* Get machine-dependent INFINITY value. */
+# include <bits/inf.h>
-#ifdef __USE_ISOC99
/* Get machine-dependent NAN value (returned for some domain errors). */
# include <bits/nan.h>
-#endif
+#endif /* __USE_ISOC99 */
+
/* Get general and ISO C99 specific information. */
#include <bits/mathdef.h>
so we can easily declare each function as both `name' and `__name',
and can declare the float versions `namef' and `__namef'. */
-#define __MATHCALL(function,suffix, args) \
- __MATHDECL (_Mdouble_,function,suffix, args)
-#define __MATHDECL(type, function,suffix, args) \
- __MATHDECL_1(type, function,suffix, args); \
- __MATHDECL_1(type, __CONCAT(__,function),suffix, args)
-#define __MATHCALLX(function,suffix, args, attrib) \
- __MATHDECLX (_Mdouble_,function,suffix, args, attrib)
-#define __MATHDECLX(type, function,suffix, args, attrib) \
- __MATHDECL_1(type, function,suffix, args) __attribute__ (attrib); \
- __MATHDECL_1(type, __CONCAT(__,function),suffix, args) __attribute__ (attrib)
-#define __MATHDECL_1(type, function,suffix, args) \
- extern type __MATH_PRECNAME(function,suffix) args __THROW
-
-#define _Mdouble_ double
-#define __MATH_PRECNAME(name,r) __CONCAT(name,r)
+#define __MATHDECL_1(type,function,suffix,args) \
+ extern type __MATH_PRECNAME(function,suffix) args __THROW
+
+#define __MATHDECL(type,function,suffix,args) \
+ __MATHDECL_1(type,function,suffix,args);
+
+#define __MATHCALL(function,suffix,args) \
+ __MATHDECL(_Mdouble_,function,suffix,args)
+
+#define __MATHDECLX(type,function,suffix,args,attrib) \
+ __MATHDECL_1(type,function,suffix,args) __attribute__ (attrib); \
+ __MATH_maybe_libm_hidden_proto(function)
+
+#define __MATHCALLX(function,suffix,args,attrib) \
+ __MATHDECLX(_Mdouble_,function,suffix,args,attrib)
+
+/* Decls which are also used internally in libm.
+ Only the main variant is used internally, no need to try to avoid relocs
+ for the {l,f} variants. */
+#define __MATHDECLI(type,function,suffix,args) \
+ __MATHDECL_1(type,function,suffix,args); \
+ __MATH_maybe_libm_hidden_proto(function)
+
+#define __MATHCALLI(function,suffix,args) \
+ __MATHDECLI(_Mdouble_,function,suffix,args)
+
+/* Private helpers for purely macro impls below.
+ Only make __foo{,f,l} visible but not (the macro-only) foo. */
+#if defined _LIBC
+# define __MATHDECL_PRIV(type,function,suffix,args,attrib) \
+ __MATHDECL_1(type,__CONCAT(__,function),suffix,args) __attribute__ (attrib); \
+ libm_hidden_proto(__MATH_PRECNAME(__##function,suffix))
+#else
+# define __MATHDECL_PRIV(type,function,suffix,args,attrib) \
+ __MATHDECL_1(type,__CONCAT(__,function),suffix,args) __attribute__ (attrib);
+#endif
+
+
+/* Include the file of declarations, declaring double versions */
+
+#if defined _LIBC
+# define __MATH_maybe_libm_hidden_proto(x) libm_hidden_proto(x)
+#else
+# define __MATH_maybe_libm_hidden_proto(x)
+#endif
+#define _Mdouble_ double
+#define __MATH_PRECNAME(name,r) __CONCAT(name,r)
+#define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_STD
+#define _Mdouble_END_NAMESPACE __END_NAMESPACE_STD
#include <bits/mathcalls.h>
#undef _Mdouble_
-#undef __MATH_PRECNAME
+#undef _Mdouble_BEGIN_NAMESPACE
+#undef _Mdouble_END_NAMESPACE
+#undef __MATH_PRECNAME
+#undef __MATH_maybe_libm_hidden_proto
-#if defined __USE_MISC || defined __USE_ISOC99
+#if defined __USE_MISC || defined __USE_ISOC99
/* Include the file of declarations again, this time using `float'
instead of `double' and appending f to each function name. */
+# define __MATH_maybe_libm_hidden_proto(x)
# ifndef _Mfloat_
# define _Mfloat_ float
# endif
-# define _Mdouble_ _Mfloat_
+# define _Mdouble_ _Mfloat_
# ifdef __STDC__
# define __MATH_PRECNAME(name,r) name##f##r
# else
# define __MATH_PRECNAME(name,r) name/**/f/**/r
# endif
+# define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_C99
+# define _Mdouble_END_NAMESPACE __END_NAMESPACE_C99
# include <bits/mathcalls.h>
# undef _Mdouble_
+# undef _Mdouble_BEGIN_NAMESPACE
+# undef _Mdouble_END_NAMESPACE
# undef __MATH_PRECNAME
+# undef __MATH_maybe_libm_hidden_proto
+
+
+# if (defined __STDC__ || defined __GNUC__) \
+ && (!defined __NO_LONG_DOUBLE_MATH || defined __LDBL_COMPAT)
+# ifdef __LDBL_COMPAT
+
+# ifdef __USE_ISOC99
+extern float __nldbl_nexttowardf (float __x, long double __y) __THROW
+ __attribute__ ((__const__));
+# ifdef __REDIRECT_NTH
+extern float __REDIRECT_NTH (nexttowardf, (float __x, long double __y), __nldbl_nexttowardf)
+ __attribute__ ((__const__));
+extern double __REDIRECT_NTH (nexttoward, (double __x, long double __y), nextafter)
+ __attribute__ ((__const__));
+extern long double __REDIRECT_NTH (nexttowardl, (long double __x, long double __y), nextafter)
+ __attribute__ ((__const__));
+# endif
+# endif
-# if (__STDC__ - 0 || __GNUC__ - 0) && !defined __NO_LONG_DOUBLE_MATH
/* Include the file of declarations again, this time using `long double'
instead of `double' and appending l to each function name. */
+# undef __MATHDECL_1
+# define __MATHDECL_2(type,function,suffix,args,alias) \
+ extern type __REDIRECT_NTH(__MATH_PRECNAME(function,suffix),args,alias)
+# define __MATHDECL_1(type,function,suffix,args) \
+ __MATHDECL_2(type,function,suffix,args,__CONCAT(function,suffix))
+# endif
+
+# define __MATH_maybe_libm_hidden_proto(x)
# ifndef _Mlong_double_
# define _Mlong_double_ long double
# endif
-# define _Mdouble_ _Mlong_double_
+# define _Mdouble_ _Mlong_double_
# ifdef __STDC__
# define __MATH_PRECNAME(name,r) name##l##r
# else
# define __MATH_PRECNAME(name,r) name/**/l/**/r
# endif
+# define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_C99
+# define _Mdouble_END_NAMESPACE __END_NAMESPACE_C99
# include <bits/mathcalls.h>
# undef _Mdouble_
+# undef _Mdouble_BEGIN_NAMESPACE
+# undef _Mdouble_END_NAMESPACE
# undef __MATH_PRECNAME
+# undef __MATH_maybe_libm_hidden_proto
# endif /* __STDC__ || __GNUC__ */
#else /* !SVID */
# ifdef __USE_XOPEN
+# ifdef __UCLIBC_SUSV4_LEGACY__
/* X/Open wants another strange constant. */
# define MAXFLOAT 3.40282347e+38F
+# endif
# endif
#endif /* SVID */
# define __NO_MATH_INLINES 1
#endif
+#if defined __USE_ISOC99 && __GNUC_PREREQ(2,97)
+/* ISO C99 defines some macros to compare number while taking care for
+ unordered numbers. Many FPUs provide special instructions to support
+ these operations. Generic support in GCC for these as builtins went
+ in before 3.0.0, but not all cpus added their patterns. We define
+ versions that use the builtins here, and <bits/mathinline.h> will
+ undef/redefine as appropriate for the specific GCC version in use. */
+# define isgreater(x, y) __builtin_isgreater(x, y)
+# define isgreaterequal(x, y) __builtin_isgreaterequal(x, y)
+# define isless(x, y) __builtin_isless(x, y)
+# define islessequal(x, y) __builtin_islessequal(x, y)
+# define islessgreater(x, y) __builtin_islessgreater(x, y)
+# define isunordered(u, v) __builtin_isunordered(u, v)
+#endif
+
/* Get machine-dependent inline versions (if there are any). */
#ifdef __USE_EXTERN_INLINES
# include <bits/mathinline.h>
#endif
-
#ifdef __USE_ISOC99
-/* ISO C99 defines some macros to compare number while taking care for
- unordered numbers. Many FPUs provide special instructions to support
- these operations and these tests are defined in <bits/mathinline.h>,
- we define the generic macros at this late point and only if they are
- not defined yet. */
+/* If we've still got undefined comparison macros, provide defaults. */
/* Return nonzero value if X is greater than Y. */
# ifndef isgreater
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