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 ALSO
asinh(3), cabs(3), cimag(3), complex(7)
COLOPHON
- This page is part of release 3.25 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/.