catanh(3) -- Linux man page
NAME
catanh, catanhf, catanhl - complex arc tangents hyperbolic
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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