tanh

Sommaire

NAME

tanh, tanhf, tanhl - hyperbolic tangent function

SYNOPSIS

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


float tanhf(float x);


long double tanhl(long double x);

Link with -lm.

DESCRIPTION

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

CONFORMING TO

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

SEE ALSO

acosh(3), asinh(3), atanh(3), cosh(3), ctanh(3), sinh(3)