cosh

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COSH(3)			  Linux Programmer’s Manual		      COSH(3)



NAME
       cosh, coshf, coshl - hyperbolic cosine function

SYNOPSIS
       #include <math.h>

       double cosh(double x);

       float coshf(float x);

       long double coshl(long double x);

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

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

SEE ALSO
       acosh(3), asinh(3), atanh(3), sinh(3), tanh(3)



				  2002-07-27			      COSH(3)