casinhf (3) Linux Manual Page
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);
Link with -lm.
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))
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 |
| casinh(), casinhf(), casinhl() | Thread safety | MT-Safe |