{{keywords>wiki library source code example reference}}
===== sinh =====
<code cpp>
     double sinh(double);
</code>
return the hyperbolic sinus

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

using namespace std;
int main (void)
{
  double x;
  x = log(4.2);

  //cout.setf(ios::fixed, ios::floatfield);
  cout.precision(8);

  cout << "hyperbolic sine of " << x << " is " << sinh(x) << endl;
  return 0;
}
</code>

==== output ====
    hyperbolic sine of 1.4350845 is 1.9809524