CASINH
Section: Linux Programmer's Manual (3)
Updated: 2015-04-19
Page Index
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
attributes(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
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