casinh

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).

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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Referenced By

asinh(3), complex(7), csinh(3).

The man pages casinhf(3) and casinhl(3) are aliases of casinh(3).