#include <math.h>
double
pow (double x ,
double y );
The pow function computes x raised to the power y. A domain error occurs if x is negative and y is not an integral value. A domain error occurs if the result cannot be represented when x is zero and y is less than or equal to zero. A range error may occur.
The pow function returns the value of x raised to the power y.
None.
#include <math.h>
double
sqrt (double x
);
The sqrt function computes the non-negative square root of x. A domain error occurs if the argument is negative.
The sqrt function returns the value of the square root.
The sqrt function returns 0.0 for arguments <= 0.0.