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

NAME
       cosh - hyperbolic cosine function

SYNOPSIS
       #include <math.h>

       double cosh(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

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

                          June 13, 1993                         1