tanh
, tanhf
—hyperbolic tangent#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
sinh(x)/cosh(x)
tanhf
is identical, save that it takes and returns float
values.
Returns
The hyperbolic tangent of x is returned.
Portability
tanh
is ANSI C. tanhf
is an extension.