@(#)sinh.3 6.1 (Berkeley) 05/15/85

.AT 3 sinh, cosh, tanh - hyperbolic functions

 #include <math.h> 

 double sinh(x) 

 double cosh(x)  double x; 

 double tanh(x)  double x; 

These functions compute the designated hyperbolic functions for real arguments. Sinh and cosh return a huge value of appropriate sign when the correct value would overflow.