CASIN(3) Linux Programmers Manual CASIN(3)
NAME
casin, casinf, casinl  complex arc sine
SYNOPSIS
#include
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))
CONFORMING TO
C99.
SEE ALSO
ccos(3), clog(3), complex(7)
COLOPHON
This page is part of release 3.05 of the Linux manpages project. A
description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/manpages/.
20071226 CASIN(3)
