NAME

tanh — hyperbolic tangent function

SYNOPSIS

#include <math.h>

double
tanh(double x);

long double
tanhl(long double x);

float
tanhf(float x);

DESCRIPTION

The tanh() function computes the hyperbolic tangent of x.

SPECIAL VALUES

tanh(±0) returns ±0.

tanh(±infinity) returns ±1.

SEE ALSO

acos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), sin(3), sinh(3), tan(3), math(3)

STANDARDS

The tanh() function conforms to ISO/IEC 9899:2011.