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CACOSH (3) | C library functions | Unix Manual Pages | :man

NAME

cacosh, cacoshf, cacoshl - complex arc hyperbolic cosine

CONTENTS

Synopsis
Description

SYNOPSIS

#include <complex.h>

"double complex cacosh(double complex "z);

"float complex cacoshf(float complex double "z);

"long double complex cacoshl(long double complex "z);

DESCRIPTION

The cacosh() function calculates the complex acosh(). If y = cacosh(z), then z = ccosh(y). The imaginary part of y is chosen in the interval [-pi*i,pi*i]. The real part of y is chosen nonnegative.

One has cacosh(z) = (0.5)*clog((1+z)/(1-z)).

"CONFORMING TO"

C99

"SEE ALSO"

cabs(3), cimag(3), acosh(3)


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