1 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
2 .\" Distributed under GPL
4 .TH CCOS 3 2008-08-11 "" "Linux Programmer's Manual"
6 ccos, ccosf, ccosl \- complex cosine function
8 .B #include <complex.h>
10 .BI "double complex ccos(double complex " z ");"
12 .BI "float complex ccosf(float complex " z ");"
14 .BI "long double complex ccosl(long double complex " z ");"
18 The complex cosine function is defined as:
21 ccos(z) = (exp(i * z) + exp(\-i * z)) / 2
24 These functions first appeared in glibc in version 2.1.