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

NAME

catanh, catanhf, catanhl - complex arc tangents hyperbolic

CONTENTS

Synopsis
Description

SYNOPSIS

#include <complex.h>

"double complex catanh(double complex "z);

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

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

DESCRIPTION

The catanh() function calculates the complex atanh(). If y = catanh(z), then z = ctanh(y). The imaginary part of y is chosen in the interval [-pi/2*i,pi/2*i].

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

"CONFORMING TO"

C99

"SEE ALSO"

cabs(3), cimag(3), atanh(3)


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