CASINH(3) Linux Programmers Manual CASINH(3)
NAME
casinh, casinhf, casinhl  complex arc sine hyperbolic
SYNOPSIS
#include
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))
CONFORMING TO
C99.
SEE ALSO
asinh(3), cabs(3), cimag(3), complex(7)
COLOPHON
This page is part of release 3.05 of the Linux manpages project. A
description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/manpages/.
20071226 CASINH(3)
