Syntax

#include <math.h>
double pow(double x, double y);

pow calculates the value of x to the power of y.

If y is 0, pow returns the value 1. If x is 0 and y is negative, pow sets errno to EDOM and returns 0. If both x and y are 0, or if x is negative and y is not an integer, pow sets errno to EDOM, and returns 0.

If an overflow results, pow sets errno to ERANGE and returns +HUGE_VAL for a large result or -HUGE_VAL for a small result.

This example calculates the value of 2ü.

#include <stdio.h>
#include <math.h>

int main(void)
{
   double x,y,z;

   x = 2.0;
   y = 3.0;
   z = pow(x, y);
   printf("%lf to the power of %lf is %lf\n", x, y, z);
   return 0;

   /****************************************************************************
      The output should be:

      2.000000 to the power of 3.000000 is 8.000000
   ****************************************************************************/
}

• exp
  
• log
  
• log10
  
• sqrt

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