tanh,
tanhf
[hyperbolic tangent]
SYNOPSIS
#include <math.h> double tanh(double x); float tanhf(float x);
DESCRIPTION
tanh
computes the hyperbolic tangent of
the argument, x.
Angles are specified in radians.
tanh(x) is defined as the following input.
sinh(x)/cosh(x)
tanhf is identical, save that it takes and returns float values.
RETURNS
The hyperbolic tangent of x
is returned.
COMPLIANCE
tanh
is ANSI C. tanhf
is an extension.