Seth Woolley's Man Viewer

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);

       Link with -lm.

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)