casinl

(3)

complex arc sine

Library functionsmanpages-dev 6.9.1-1also documents casin, casinf

#include <complex.h> double complex casin(double complex z); float complex casinf(float complex z); long double complex casinl(long double complex z);

LIBRARY

Math library (libm, -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))

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

Interface	Attribute	Value
casin (), casinf (), casinl ()	Thread safety	MT-Safe

STANDARDS

C11, POSIX.1-2008.

HISTORY

glibc 2.1. C99, POSIX.1-2001.

LIBRARY

DESCRIPTION

ATTRIBUTES

STANDARDS

HISTORY

See also