casinh, casinhf, casinhl − complex arc sine hyperbolic
Math library (libm, −lm)
#include <complex.h>
double
complex casinh(double complex z);
float complex casinhf(float complex z);
long double complex casinhl(long double complex
z);
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))
For an explanation of the terms used in this section, see attributes(7). |
C11, POSIX.1-2008.
glibc 2.1. C99, POSIX.1-2001.
asinh(3), cabs(3), cimag(3), csinh(3), complex(7)