{{keywords>wiki library source code example reference}}
====== cosh ======

<code c>
    double cosh(double);
</code>
calculates the hyperbolic cosine of a number

===== C Sourcecode Example =====

compile in linux with: gcc cosh.c -o cosh **-lm** -Wall
<code c>     
#include <stdio.h> /* including standard library */
//#include <windows.h> /* uncomment this for Windows */

#include <math.h> /* including math library */

int main ( void ) 
{
double x;
x = log(1.3);
printf("The log is %f\n",x);
printf("the hyperbolic cosine of %f is %f\n", x, cosh(x));
return 0;
}
</code>

==== output ====

   output:
   user@host:~$  ./cosh 
   The log is 0.262364
   the hyperbolic cosine of 0.262364 is 1.034615