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
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 at-
tributes(7).
┌───────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├───────────────────────────────┼───────────────┼─────────┤
│casinh(), casinhf(), casinhl() │ Thread safety │ MT-Safe │
└───────────────────────────────┴───────────────┴─────────┘
CONFORMING TO
C99, POSIX.1-2001, POSIX.1-2008.
SEE ALSO
asinh(3), cabs(3), cimag(3), csinh(3), complex(7)
COLOPHON
This page is part of release 5.10 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
2015-04-19 CASINH(3)
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