Hyperbolic sine
[Classification]
Mathematical library
[Syntax]
#include <math.h>
double  sinh(double x);
[Return value]
Returns the hyperbolic sine of x.
sinhf returns HUGE_VAL and sets macro ERANGE to global variable errno if an overflow occurs.
[Description]
This function calculates the hyperbolic sine of x.  Specify the angle in radian.  The definition expression is as follows.
 
(e x - e -x) / 2