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

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

===== cpp Sourcecode Example =====

<code cpp>
#include <iostream> /* including standard library */
#include <cmath> /* including math library */

using namespace std;
int main ( void ) 
{
    double x,res;
    x = log(1.3);
    res = cosh(x);
    
    //cout.setf(ios::fixed, ios::floatfield);
    cout.precision(8);   
    
    cout << "The log is " << x << endl;
    cout << "the hyperbolic cosine of " << x << " is " << res << endl;
    return 0;
}
</code>

==== output ====
    The log is 0.26236426
    the hyperbolic cosine of 0.26236426 is 1.0346154