casinh man page

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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Referenced By

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

casinhf(3) and casinhl(3) are aliases of casinh(3).

2015-04-19 Linux Programmer's Manual