tanh

NAME

tanh, tanhf, tanhl - hyperbolic tangent function

#include <math.h>
 I double tanh(double  x );

I float tanhf(float  x );

I long double tanhl(long double  x );

Link with -lm.

The R tanh () function returns the hyperbolic tangent of x, which is defined mathematically as sinh(x) / cosh(x).

SVr4, 4.3BSD, C89. The float and long double variants are C99 requirements.