1 .\" Copyright 2002 Walter Harms(walter.harms@informatik.uni-oldenburg.de)
2 .\" and Copyright (C) 2011 Michael Kerrisk <mtk.manpages@gamil.com>
3 .\" Distributed under GPL
5 .\" Japanese Version Copyright (c) 2003 Akihiro MOTOKI
6 .\" all rights reserved.
7 .\" Translated Thu Jul 24 00:26:52 JST 2003
8 .\" by Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
10 .\"WORD: hyperbolic ÁжÊ(Àþ¤Î)
11 .\"WORD: arc sine µÕÀµ¸¹
12 .\"WORD: arc cosine µÕ;¸¹
13 .\"WORD: arc tangent µÕÀµÀÜ
14 .\"WORD: real part ¼ÂÉô
15 .\"WORD: imaginary part µõÉô
17 .TH CACOSH 3 2011-09-15 "" "Linux Programmer's Manual"
19 cacosh, cacoshf, cacoshl \- Ê£ÁÇ¿ô¤ÎµÕÁжÊÀþ;¸¹ (arc hyperbolic cosine)
21 .B #include <complex.h>
23 .BI "double complex cacosh(double complex " z );
25 .BI "float complex cacoshf(float complex " z );
27 .BI "long double complex cacoshl(long double complex " z );
29 \fI\-lm\fP ¤Ç¥ê¥ó¥¯¤¹¤ë¡£
34 ¤ÎµÕÁжÊÀþ;¸¹ (arc hyperbolic cosine) ¤ò·×»»¤¹¤ë¡£
35 \fIy\ =\ cacosh(z)\fP ¤Ê¤é¤Ð¡¢
36 \fIz\ =\ ccosh(y)\fP ¤¬À®Î©¤¹¤ë¡£
38 ¤ÎµõÉô¤ÎÃͤ϶è´Ö [\-pi,pi] ¤«¤éÁªÂò¤µ¤ì¡¢
40 ¤Î¼ÂÉô¤ÎÃͤÏÈóÉé¤ÎÃͤ¬ÁªÂò¤µ¤ì¤ë¡£
45 cacosh(z) = 2 * clog(csqrt((z + 1) / 2) + csqrt((z \- 1) / 2))
48 ¤³¤ì¤é¤Î´Ø¿ô¤Ï glibc ¥Ð¡¼¥¸¥ç¥ó 2.1 ¤Ç½é¤á¤ÆÅо줷¤¿¡£
53 /* Link with "\-lm" */
61 main(int argc, char *argv[])
63 double complex z, c, f;
66 fprintf(stderr, "Usage: %s <real> <imag>\\n", argv[0]);
70 z = atof(argv[1]) + atof(argv[2]) * I;
73 printf("cacosh() = %6.3f %6.3f*i\\n", creal(c), cimag(c));
75 f = 2 * clog(csqrt((z + 1)/2) + csqrt((z \- 1)/2));
76 printf("formula = %6.3f %6.3f*i\\n", creal(f2), cimag(f2));