1 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
2 .\" Distributed under GPL
4 .\" Modified 2003-11-18, aeb: historical remarks
6 .\" Japanese Version Copyright (c) 2002 Akihiro MOTOKI
7 .\" all rights reserved.
8 .\" historical remarks: Japanese Version Copyright (c) 2005 SAITOH Akira
9 .\" all rights reserved.
10 .\" Translated Sun Sep 22 08:34:42 2002
11 .\" by Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
12 .\" Updated & Modified Sat Feb 19 05:50:00 2005
13 .\" by SAITOH Akira <s-akira@users.sourceforge.net>
14 .\" Updated 2008-09-16, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
16 .TH GAMMA 3 2008-08-05 "GNU" "Linux Programmer's Manual"
18 gamma, gammaf, gammal \- ¥¬¥ó¥Þ´Ø¿ô (¤Î¼«Á³Âпô)
22 .BI "double gamma(double " x ");"
24 .BI "float gammaf(float " x ");"
26 .BI "long double gammal(long double " x ");"
28 \fI\-lm\fP ¤Ç¥ê¥ó¥¯¤¹¤ë¡£
31 glibc ¸þ¤±¤Îµ¡Ç½¸¡ºº¥Þ¥¯¥í¤ÎÍ×·ï
32 .RB ( feature_test_macros (7)
38 _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE
42 _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600
43 .\" Also seems to work: -std=c99 -D_XOPEN_SOURCE
46 ¤³¤ì¤é¤Î´Ø¿ô¤ÏÈó¿ä¾©¤Ç¤¢¤ë¡£¤½¤ÎÂå¤ï¤ê¡¢¾ìÌ̤˱þ¤¸¤Æ
52 ¥¬¥ó¥Þ´Ø¿ô¤ÎÄêµÁ¤Ë¤Ä¤¤¤Æ¤Ï¡¢
56 4.4BSD ¤Î libm ¤È FreeBSD ¤Î¤¤¤¯¤Ä¤«¤Î¥Ð¡¼¥¸¥ç¥ó¤Ë¤Ï¡¢´Ø¿ô
58 ¤¬´Þ¤Þ¤ì¤Æ¤ª¤ê¡¢´üÂÔÄ̤ꥬ¥ó¥Þ´Ø¿ô¤ò·×»»¤Ç¤¤ë¡£
62 ¤ò´Þ¤ó¤Ç¤¤¤ë¤¬¡¢¤³¤ì¤Ï
64 ¤ÈÅù²Á¤Ç¤¢¤ê¡¢¥¬¥ó¥Þ´Ø¿ô¤Î¼«Á³Âпô¤ò·×»»¤¹¤ë¡£
72 ¥·¥¹¥Æ¥à¤Ë¤è¤Ã¤Æ¿¶Éñ¤¤¤¬°Û¤Ê¤ë¤È¤¤¤¦Îò»ËŪ¤Ê·Ð°Þ¤Î¤¿¤á¡¢
73 ¤³¤Î´Ø¿ô¤Ï¤É¤Îɸ½àµ¬³Ê¤Ç¤âµ¬Äꤵ¤ì¤Æ¤¤¤Ê¤¤¡£
76 4.2BSD¤Ë¤ª¤¤¤Æ¤Ï¡¢´Ø¿ô
79 .RI ln(|Gamma(| x |)|)
82 ¤ÎÉä¹æ¤¬ extern int \fIsigngam\fP ¤Ë³ÊǼ¤µ¤ì¤Æ¤¤¤¿¡£
83 4.3BSD¤Ë¤Ê¤Ã¤Æ´Ø¿ô̾¤¬Êѹ¹¤µ¤ì¡¢
85 ¤È¤Ê¤ê¡¢¤½¤Î¥Þ¥Ë¥å¥¢¥ë¥Ú¡¼¥¸¤Ç¤Ï
88 ¡Ö¤¤¤Ä¤ÎÆü¤« gamma ¤Î̾¤ÏÉü³è¤·¡¢¥¬¥ó¥Þ´Ø¿ô¤Ë´§¤µ¤ì¤ë¤Ç¤¢¤í¤¦¡×
91 ¤È¤¤¤¦ÀÀ¤¤¤¬½Ò¤Ù¤é¤ì¤Æ¤¤¤¿¡£
92 .\" The FreeBSD man page says about gamma() that it is like lgamma()
93 .\" except that is does not set signgam.
94 .\" Also, that 4.4BSD has a gamma() that computes the true gamma function.
95 ¤³¤ì¤Ï4.4BSD¤Ë¤Ê¤Ã¤Æ¼Â¸½¤µ¤ì¡¢
97 ¤Ï¤Þ¤µ¤Ë¥¬¥ó¥Þ´Ø¿ô¤ò·×»»¤¹¤ë¤è¤¦¤Ë¤Ê¤Ã¤¿¡£
98 (¤â¤¦ \fIsigngam\fP ¤Ë¤ÏºîÍѤ·¤Ê¤¤¡£)
99 ¤È¤³¤í¤¬¡¢¤³¤ì¤¬Åо줹¤ë»þ´ü¤¬ÃÙ¤¹¤®¤¿¤¿¤á¡¢
101 ¤È¤¤¤¦¡ÖËÜÅö¤Î¥¬¥ó¥Þ´Ø¿ô¡×¤¬¤¹¤Ç¤Ë¸ºß¤·¤Æ¤¤¤ë¤Î¤Ç¤¢¤ë¡£
102 .\" FreeBSD¤Î¥Þ¥Ë¥å¥¢¥ë¤Ë¤è¤ì¤Ð¡¢gamma()¤Ïsigngam¤ò¥»¥Ã¥È¤·¤Ê¤¤
103 .\" ¤³¤È¤ò½ü¤±¤Ðlgamma()¤ÈƱÍͤÀ¤È¤¤¤¦¡£
104 .\" ¤Þ¤¿¡¢4.4BSD¤Ç¤Ïgamma()¤ÏËÜÅö¤Î¥¬¥ó¥Þ´Ø¿ô¤ò·×»»¤¹¤ë¤È¤â¤¤¤¦¡£