COSH

Section: Linux Programmer's Manual (3)
Updated: June 13, 1993
 

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)