x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
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
interval [-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
clog(3), csin(3), complex(7)
COLOPHON
This page is part of release 3.69 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
http://www.kernel.org/doc/man-pages/.
2008-08-11 CASIN(3)
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