tanh
hyperbolic tangent function
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NAME
<span class="Nm" id="tanh">tanh</span>
INTERFACE
#include <math.h>
double tanh ( double x ) long tanhl ( long double x ) float tanhf ( float x )
DESCRIPTION
The tanh function computes the hyperbolic tangent of \c x.
SPECIAL VALUES
tanh ( <span class="Fn">±0</span> ) returns ±0. \n \n tanh ( <span class="Fn">±infinity</span> ) returns ±1.
SEE ALSO
acos (3) , asin (3) , atan (3) , atan2 (3) , cos (3) , cosh (3) , sin (3) , sinh (3) , tan (3) , reference:math (3)
STANDARDS
The tanh function conforms to ISO/IEC 9899:1999(E).