casinf (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

These functions calculate 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.

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).
Interface Attribute Value
casin (), casinf (), casinl () Thread safety MT-Safe

CONFORMING TO

C99, POSIX.1-2001, POSIX.1-2008.

SEE ALSO

clog(3), csin(3), complex(7)

Information

Source
Linux kernel
OS/version
Source updated
April 19, 2015
Page created
February 9, 2018
Page generated
December 2, 2018