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Manual Reference Pages  - COSH (3)

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cosh, coshf, coshl - hyperbolic cosine function

CONTENTS

Synopsis
Description

#include <math.h> 



double cosh(double x); 



float coshf(float x); 



long double coshl(long double x); 

The cosh() function returns the hyperbolic cosine of x, which is defined mathematically as (exp(x) + exp(-x)) / 2.

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), sinh(3), tanh(3)

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