pow

Returns the first argument raised to the power of the second argument.

Format

#include  <math.h>

double pow  (double base, double exp);

Arguments

base

A value of type double that is to be raised to a power.

exp

The exponent to which the power base is to be raised.

Description

Return Values

x	The result of the first argument raised to the power of the second.
1.0	Indicates that the base is zero and the exponent is zero.
HUGE_VAL	Indicates that the result overflowed; errno is set to ERANGE.
-HUGE_VAL	Indicates that the base is zero and the exponent is negative; errno is set to EDOM.

Example

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

main()
{
double x;
 errno=0;

 x = pow(-3.0, 2.0);
 printf("%d, %f\n", errno, x);
}