1 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
2 .\" Distributed under GPL
3 .\" Based on glibc infopages
7 .\" Japanese Version Copyright (c) 2002 Akihiro MOTOKI all rights reserved.
8 .\" Translated Thu 05 Dec 2002 by Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
9 .\" Updated 2008-09-16, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
12 .\"WORD: quiet NaN SIGFPE ¥·¥°¥Ê¥ë¤Ê¤·¤Î̵¸úÃÍ
14 .TH NAN 3 2008-08-11 "GNU" "Linux Programmer's Manual"
16 nan, nanf, nanl \- ̵¸úÃÍ ('Not a Number') ¤òÊÖ¤¹
20 .BI "double nan(const char *" tagp );
22 .BI "float nanf(const char *" tagp );
24 .BI "long double nanl(const char *" tagp );
26 \fI\-lm\fP ¤Ç¥ê¥ó¥¯¤¹¤ë¡£
29 glibc ¸þ¤±¤Îµ¡Ç½¸¡ºº¥Þ¥¯¥í¤ÎÍ×·ï
30 .RB ( feature_test_macros (7)
37 _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
40 .\" motoki: quiet NaN ¤È¤Ï²¿¤À¤í¤¦¡©
41 ¤³¤ì¤é¤Î´Ø¿ô¤Ï¡¢SIGFPE ¥·¥°¥Ê¥ë¤Ê¤·¤Î̵¸úÃÍ (NaN) ¤ò¼¨¤¹É½¸½¤òÊÖ¤¹
42 (¤É¤Îɽ¸½¤ò»ÈÍѤ¹¤ë¤«¤Ï
44 ¤Ç»ØÄꤹ¤ë)¡£SIGFPE ¥·¥°¥Ê¥ë¤Ê¤·¤Î NaN ¤ò¥µ¥Ý¡¼¥È¤·¤Æ¤¤¤Ê¤¤¼ÂÁõ¤Ç¤Ï 0 ¤òÊÖ¤¹¡£
46 .I nan("char-sequence")
50 strtod("NAN(char-sequence)", NULL);
63 ¤ò¸Æ¤Ö¤Î¤ÈƱ¤¸¤Ç¤¢¤ë¡£
67 ¤Î»È¤¤Êý¤Ïµ¬Äꤵ¤ì¤Æ¤¤¤Ê¤¤¡£
68 IEEE 754 ½àµò¤Î¥·¥¹¥Æ¥à¤Ç¤Ï¡¢NaN ¤Ë¤âÊ£¿ô¤Îɽ¸½¤¬Â¸ºß¤·¡¢
70 ¤Ï¤½¤ÎÁªÂò¤Ë»ÈÍѤµ¤ì¤ë¡£
71 ¾¤Î¥·¥¹¥Æ¥à¤Ç¤Ï¡¢²¿¤Î°ÕÌ£¤â¤Ê¤¤¤«¤â¤·¤ì¤Ê¤¤¡£
73 ¤³¤ì¤é¤Î´Ø¿ô¤Ï glibc ¥Ð¡¼¥¸¥ç¥ó 2.1 ¤Ç½é¤á¤ÆÅо줷¤¿¡£
76 IEC 559 ¤ä¿ä¾©´Ø¿ô¤Ë¤Ê¤Ã¤Æ¤¤¤ë IEEE 754/IEEE 854
77 ¤ÎÉÕÏ¿¤â»²¾È¤¹¤ë¤³¤È¡£