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Command: catanh | Section: 3 | Source: OpenBSD | File: catanh.3
CATANH(3) FreeBSD Library Functions Manual CATANH(3)
NAME
catanh, catanhf, catanhl - complex inverse hyperbolic tangent
SYNOPSIS
#include <complex.h>
double complex
catanh(double complex z);
float complex
catanhf(float complex z);
long double complex
catanhl(long double complex z);
DESCRIPTION
The catanh(), catanhf() and catanhl() functions compute the complex
inverse hyperbolic tangent of z.
For all complex floating-point numbers z,
catanh(z) = -i catan(iz).
RETURN VALUES
The catanh(), catanhf() and catanhl() functions return the complex
inverse hyperbolic tangent of z with imaginary part in the interval
[-Pi/2, Pi/2], and unbounded real part.
SEE ALSO
cacosh(3), casinh(3)
STANDARDS
The catanh(), catanhf() and catanhl() functions conform to ISO/IEC
9899:1999 ("ISO C99").
FreeBSD 14.1-RELEASE-p8 June 5, 2013 FreeBSD 14.1-RELEASE-p8