casinh(3) Linux Man Page - System Grab Bag

Name

casinh, casinhf, casinhl - complex arc sine hyperbolic

Library

Math library ( libm ", " -lm )

Synopsis

#include <complex.h> 
double complex casinh(double complex  z );
float complex casinhf(float complex  z );
long double complex casinhl(long double complex  z );

Description

These functions calculate the complex arc hyperbolic sine of z. If y\~=\~casinh(z), then z\~=\~csinh(y). The imaginary part of y is chosen in the interval [-pi/2,pi/2].

One has:

casinh(z) = clog(z + csqrt(z * z + 1))

Attributes

For an explanation of the terms used in this section, see attributes(7). allbox; lbx lb lb T{ casinh()casinhf()casinhl()

Interface	Attribute	Value
T}	Thread safety	MT-Safe

Standards

C11, POSIX.1-2008.

History

glibc 2.1. C99, POSIX.1-2001.