Header File 

math.h  

Category 

Math Routines, Inline Routines 

Prototype 

double sinh(double x); 

long double sinhl(long double x); 

Description 

Calculates hyperbolic sine. 

sinh computes the hyperbolic sine. 

sinl is the long double version; it takes a long double argument and returns a long double result. Error handling for sinh and sinhl can be modified through the functions _matherr and _matherrl. 

Return Value 

sinh and sinhl return the hyperbolic sine of x. 

When the correct value overflows, these functions return the value HUGE_VAL (sinh) or _LHUGE_VAL (sinhl) of appropriate sign. Also, the global variable errno is set to ERANGE. 

Example  

#include <stdio.h>
#include <math.h>
int main(void)
{
   double result, x = 0.5;
   result = sinh(x);
   printf("The hyperbolic sin of %lf is %lf\n", x, result);
   return 0;
}

Portability