Manual Page Result
0
Command: atanh | Section: 3 | Source: OpenBSD | File: atanh.3
ATANH(3) FreeBSD Library Functions Manual ATANH(3)
NAME
atanh, atanhf, atanhl - inverse hyperbolic tangent functions
SYNOPSIS
#include <math.h>
double
atanh(double x);
float
atanhf(float x);
long double
atanhl(long double x);
DESCRIPTION
The atanh() function computes the inverse hyperbolic tangent of the real
argument x. The atanhf() function is a single precision version of
atanh(). The atanhl() function is an extended precision version of
atanh().
RETURN VALUES
If |x|>=1, atanh(x), atanhf(x) and atanhl(x) return +infinity, -infinity
or NaN, and set the global variable errno to EDOM.
SEE ALSO
acosh(3), asinh(3), exp(3), fpclassify(3)
HISTORY
The atanh() function appeared in 4.3BSD.
FreeBSD 14.1-RELEASE-p8 June 29, 2021 FreeBSD 14.1-RELEASE-p8