1 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
2 .\" Distributed under GPL
4 .\" Japanese Version Copyright (c) 2003 Akihiro MOTOKI
5 .\" all rights reserved.
6 .\" Translated Thu Jul 24 01:47:42 JST 2003
7 .\" by Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
9 .\"WORD: natural logarithm ¼«Á³Âпô
10 .\"WORD: logarithm Âпô
11 .\"WORD: exponential »Ø¿ô
12 .\"WORD: inverse function µÕ´Ø¿ô
14 .TH CLOG 3 2008-08-11 "" "Linux Programmer's Manual"
17 .\"O clog, clogf, clogl \- natural logarithm of a complex number
18 clog, clogf, clogl \- Ê£ÁÇ¿ô¤Î¼«Á³Âпô
21 .B #include <complex.h>
23 .BI "double complex clog(double complex " z );
25 .BI "float complex clogf(float complex " z );
27 .BI "long double complex clogl(long double complex " z );
29 .\"O Link with \fI\-lm\fP.
30 \fI\-lm\fP ¤Ç¥ê¥ó¥¯¤¹¤ë¡£
35 .\"O is the inverse function of the exponential
37 .\"O Thus, if \fIy = clog(z)\fP, then \fIz = cexp(y)\fP.
38 .\"O The imaginary part of
40 .\"O is chosen in the interval [\-pi,pi].
46 ¤·¤¿¤¬¤Ã¤Æ¡¢ \fIy = clog(z)\fP ¤Ê¤é¤Ð¡¢ \fIz = cexp(y)\fP ¤¬À®Î©¤¹¤ë¡£
48 ¤Îµõ¿ôÉô¤ÎÃͤ϶è´Ö [\-pi,pi] ¤«¤éÁªÂò¤µ¤ì¤ë¡£
54 clog(z) = log(cabs(z)) + I * carg(z)
59 .\"O close to zero will cause an overflow.
61 ¤È¤·¤Æ 0 ¤Ë¶á¤¤ÃͤòÆþ¤ì¤ë¤È¡¢¥ª¡¼¥Ð¡¼¥Õ¥í¡¼¤òµ¯¤³¤¹¤¿¤á¡¢
65 .\"O These functions first appeared in glibc in version 2.1.
66 ¤³¤ì¤é¤Î´Ø¿ô¤Ï glibc ¥Ð¡¼¥¸¥ç¥ó 2.1 ¤Ç½é¤á¤ÆÅо줷¤¿¡£
67 .\"O .SH "CONFORMING TO"