Header File 

math.h 

Category 

Math Routines 

Prototype 

double pow10(int p); 

long double pow10l(int p); 

Description 

Calculates 10 to the power of p. 

pow10l is the long double version; it takes long double arguments and returns a long double result. 

Return Value 

On success, pow10 returns the value calculated, 10 to the power of p and pow10l returns a long double result. 

The result is actually calculated to long double accuracy. All arguments are valid, although some can cause an underflow or overflow. 

Example  

#include <math.h>
#include <stdio.h>
int main(void)
{
  double p = 3.0;
  printf("Ten raised to %lf is %lf\n", p, pow10(p));
  return 0;
}

Portability