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Manual Reference Pages  - TANH (3)

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tanh, tanhf, tanhl - hyperbolic tangent function

CONTENTS

Synopsis
Description

#include <math.h> 



double tanh(double x); 



float tanhf(float x); 



long double tanhl(long double x); 

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

SVID 3, POSIX, BSD 4.3, ISO 9899 (C99). The float and the long double variants are C99 requirements.

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

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