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 00:22:25 JST 2003
7 .\" by Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
9 .\"WORD: arc sine µÕÀµ¸¹
10 .\"WORD: arc cosine µÕ;¸¹
11 .\"WORD: arc tangent µÕÀµÀÜ
12 .\"WORD: real part ¼ÂÉô
13 .\"WORD: imaginary part µõÉô
15 .TH CATAN 3 2008-08-06 "" "Linux Programmer's Manual"
18 .\"O catan, catanf, catanl \- complex arc tangents
19 catan, catanf, catanl \- Ê£ÁÇ¿ô¤ÎµÕÀµÀÜ (arc tangent)
22 .B #include <complex.h>
24 .BI "double complex catan(double complex " z );
26 .BI "float complex catanf(float complex " z );
28 .BI "long double complex catanl(long double complex " z );
30 .\"O Link with \fI\-lm\fP.
31 \fI\-lm\fP ¤Ç¥ê¥ó¥¯¤¹¤ë¡£
36 .\"O function calculates the complex arc tangent of
38 .\"O If \fIy\ =\ catan(z)\fP, then \fIz\ =\ ctan(y)\fP.
39 .\"O The real part of y is chosen in the interval [\-pi/2,pi/2].
43 ¤ÎµÕÀµÀÜ (arc tangent) ¤ò·×»»¤¹¤ë¡£
44 \fIy = catan(z)\fP ¤Ê¤é¤Ð¡¢ \fIz = ctan(y)\fP ¤¬À®Î©¤¹¤ë¡£
46 ¤Î¼ÂÉô¤ÎÃͤ϶è´Ö [\-pi/2,pi/2] ¤«¤éÁªÂò¤µ¤ì¤ë¡£
52 catan(z) = 1 / 2i clog((1 + iz) / (1 \- iz))
56 .\"O These functions first appeared in glibc in version 2.1.
57 ¤³¤ì¤é¤Î´Ø¿ô¤Ï glibc ¥Ð¡¼¥¸¥ç¥ó 2.1 ¤Ç½é¤á¤ÆÅо줷¤¿¡£
58 .\"O .SH "CONFORMING TO"