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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.