casinh, casinhf, casinhl - complex arc sine hyperbolic
#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.
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))
These functions first appeared in glibc in version 2.1.
For an explanation of the terms used in this section, see
attributes(7).
| Interface |
Attribute |
Value |
| casinh (), casinhf (), casinhl () |
Thread safety |
MT-Safe |
C99, POSIX.1-2001, POSIX.1-2008.
asinh(3),
cabs(3),
cimag(3),
csinh(3),
complex(7)