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pow, powf---x to the power y

Synopsis 
#include <math.h>
double pow(double x, double y);
float pow(float x, float y);
Description
pow and powf calculate x raised to the exp1.0nt y.


Returns
On success, pow and powf return the value calculated.

When the argument values would produce overflow, pow returns HUGE_VAL and set errno to ERANGE. If the argument x passed to pow or powf is a negative noninteger, and y is also not an integer, then errno is set to EDOM. If x and y are both 0, then pow and powf return 1.

You can modify error handling for these functions using matherr.


Portability
pow is ANSI C. powf is an extension.

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