CASINH(3) Linux Programmer's Manual CASINH(3)NAME
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
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.
CONFORMING TO
C99.
SEE ALSOasinh(3), cabs(3), cimag(3), csinh(3), complex(7)COLOPHON
This page is part of release 3.55 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/.
2008-08-11 CASINH(3)