Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

Linux 2.6 - man page for casin (linux section 3)

CASIN(3)						     Linux Programmer's Manual							  CASIN(3)

NAME
casin, casinf, casinl - complex arc sine
SYNOPSIS
#include <complex.h> double complex casin(double complex z); float complex casinf(float complex z); long double complex casinl(long double complex z); Link with -lm.
DESCRIPTION
The casin() function calculates the complex arc sine of z. If y = casin(z), then z = csin(y). The real part of y is chosen in the inter- val [-pi/2,pi/2]. One has: casin(z) = -i clog(iz + csqrt(1 - z * z))
VERSIONS
These functions first appeared in glibc in version 2.1.
CONFORMING TO
C99.
SEE ALSO
ccos(3), clog(3), complex(7)
COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. 2008-08-11 CASIN(3)