casinh(3) - BetterMan

casinh(3)

complex arc sine hyperbolic

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Synopsis

#include <complex.h>
double complex casinh(double complex 
z
);
float complex casinhf(float complex 
z
);
long double complex casinhl(long double complex 
z
);

—

NAME

casinh, casinhf, casinhl - complex arc sine hyperbolic

LIBRARY

Math library (libm, -lm)

SYNOPSIS

bash

#include <complex.h>

bash

double complex casinh(double complex \nz\n);\n
\nfloat complex casinhf(float complex \nz\n);\n
\nlong double complex casinhl(long double complex \nz\n);

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:

bash

casinh(z) = clog(z + csqrt(z * z + 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

STANDARDS

C11, POSIX.1-2008.

HISTORY

glibc 2.1. C99, POSIX.1-2001.