1 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
2 .\" Distributed under GPL, 2002-07-27 Walter Harms
3 .\" This was done with the help of the glibc manual.
5 .\" 2004-10-31, aeb, corrected
7 .\" Japanese Version Copyright (c) 2004-2005 Yuichi SATO
8 .\" all rights reserved.
9 .\" Translated 2004-07-27, Yuichi SATO <ysato444@yahoo.co.jp>
10 .\" Updated & Modified 2005-01-10, Yuichi SATO
11 .\" Updated & Modified 2005-09-04, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
12 .\" Updated 2008-09-16, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
14 .TH FPCLASSIFY 3 2010-09-20 "" "Linux Programmer's Manual"
16 fpclassify, isfinite, isnormal, isnan, isinf \- ÉâÆ°¾®¿ôÅÀ¿ô¤ÎʬÎà¥Þ¥¯¥í
21 .BI "int fpclassify(" x );
23 .BI "int isfinite(" x );
25 .BI "int isnormal(" x );
32 \fI\-lm\fP ¤Ç¥ê¥ó¥¯¤¹¤ë¡£
35 glibc ¸þ¤±¤Îµ¡Ç½¸¡ºº¥Þ¥¯¥í¤ÎÍ×·ï
36 .RB ( feature_test_macros (7)
40 .\" I haven't fully grokked the source to determine the FTM requirements;
41 .\" in part, the following has been tested by experiment.
47 _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE ||
48 _POSIX_C_SOURCE\ >=\ 200112L;
55 _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE || _ISOC99_SOURCE ||
56 _POSIX_C_SOURCE\ >=\ 200112L;
63 _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE ||
64 _POSIX_C_SOURCE\ >=\ 200112L;
71 ÉâÆ°¾®¿ôÅÀ¿ô¤Ï̵¸ÂÂç¤ä NaN ¤Î¤è¤¦¤ÊÆÃÊ̤ÊÃͤò»ý¤Ä¤³¤È¤¬¤Ç¤¤ë¡£
76 ¤¬¤É¤Î¤è¤¦¤Ê¼ïÊ̤«¤òÃΤ뤳¤È¤¬¤Ç¤¤ë¡£
77 ¥Þ¥¯¥í¤ÏǤ°Õ¤ÎÉâÆ°¾®¿ôÅÀ¿ôɽ¸½¤ò°ú¤¿ô¤È¤·¤Æ¤È¤ë¤³¤È¤¬¤Ç¤¤ë¡£
78 ·ë²Ì¤Ï°Ê²¼¤ÎÃͤΤ¤¤º¤ì¤«°ì¤Ä¤Ç¤¢¤ë:
82 ¤¬ "Not a Number" ¤Ç¤¢¤ë (¿ôÃͤǤϤʤ¤)¡£
86 ¤¬Àµ¤Î̵¸ÂÂç¤Þ¤¿¤ÏÉé¤Î̵¸ÂÂç¤Ç¤¢¤ë¡£
94 ¤òÀµµ¬²½·Á¼°¤Çɽ¸½¤¹¤ë¤Ë¤Ï¾®¤µ¤¹¤®¤ë¡£
97 ¾åµ¤Î¤É¤ì¤Ë¤âÅö¤Æ¤Ï¤Þ¤é¤Ê¤¤¾ì¹ç¤Ç¤¢¤ê¡¢
98 ÃͤÏÄ̾ï¤ÎÉâÆ°¾®¿ôÅÀ¿ô¤Ç¤¢¤ë¤Ï¤º¤À¡£
100 ¾¤Î¥Þ¥¯¥í¤Ï¡¢¤¤¤¯¤Ä¤«¤Îɸ½àŪ¤ÊÌ䤤¤ËÂФ·¤Æ¡¢´Êñ¤ÊÅú¤¨¤òÄ󶡤¹¤ë¡£
103 (fpclassify(x) != FP_NAN && fpclassify(x) != FP_INFINITE)
104 ¤Î¾ì¹ç¤Ë 0 °Ê³°¤ÎÃͤòÊÖ¤¹¡£
107 (fpclassify(x) == FP_NORMAL)
108 ¤Î¾ì¹ç¤Ë 0 °Ê³°¤ÎÃͤòÊÖ¤¹¡£
111 (fpclassify(x) == FP_NAN)
112 ¤Î¾ì¹ç¤Ë 0 °Ê³°¤ÎÃͤòÊÖ¤¹¡£
116 ¤¬Àµ¤Î̵¸ÂÂç¤Î¾ì¹ç¤Ï 1 ¤ò¡¢
117 Éé¤Î̵¸ÂÂç¤Î¾ì¹ç¤Ï \-1 ¤òÊÖ¤¹¡£
122 ¤Ë´Ø¤·¤Æ¡¢É¸½àµ¬³Ê¤ÇÄê¤á¤é¤ì¤Æ¤¤¤ë¤Î¤Ï¡¢
123 ÊÖ¤êÃͤ¬ 0 °Ê³°¤Ë¤Ê¤ë¤Î¤Ï°ú¤¿ô¤¬Ìµ¸ÂÂç¤Î¾ì¹ç¤À¤±¤È¤¤¤¦¤³¤È¤À¤±¤Ç¤¢¤ë¡£
125 glibc 2.01 °ÊÁ°¤Ç¤Ï¡¢
129 ¤¬Àµ¤Î̵¸ÂÂ礫Éé¤Î̵¸ÂÂç¤Î¾ì¹ç¡¢
130 0 °Ê³°¤ÎÃÍ (¼ÂºÝ¤Ë¤Ï 1) ¤òÊÖ¤¹
131 (C99 ¤ÎÍ×µá»ÅÍͤǷè¤Þ¤Ã¤Æ¤¤¤ë¤Î¤Ï
132 0 °Ê³°¤ÎÃͤòÊÖ¤¹¤È¤¤¤¦¤³¤È¤À¤±¤Ç¤¢¤ë)¡£