casinh

casinh, casinhf, casinhl - complex arc sine hyperbolic

#include <complex.h> I double complex casinh(double complex z );
I float complex casinhf(float complex z );
I long double complex casinhl(long double complex z ); Link with -lm.

The R casinh () function calculates the complex asinh(). 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)).

C99

asinh(3), cabs(3), cimag(3), complex(7)