casinh, casinhf, casinhl — complex arc sine
hyperbolic
Synopsis
#include <complex.h>
double complex casinh(
double complex
z);
float
complex casinhf(
float complex
z);
long
double complex casinhl(
long double complex
z);
Note
Link with −lm.
DESCRIPTION
The casinh() function
calculates 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))
VERSIONS
These functions first appeared in glibc in version
2.1.
This page is part of release 3.17 of the Linux man-pages project. A
description of the project, and information about reporting
bugs, can be found at
http://www.kernel.org/doc/man-pages/.
Copyright 2002 Walter Harms (walter.harmsinformatik.uni-oldenburg.de)
Distributed under GPL