Calculates the yth power of x

[Classification]

Mathematical library

[Syntax]

#include <math.h>

float __far powf(float x, float y);

[Return value]

Returns the yth power of x.

If x < 0 and y is a non-integer or if x = 0 and y <= 0, powf returns a Not-a-Number (NaN) and sets the macro EDOM for the global variable errno.

If an overflow occurs, powf returns and sets the macro ERANGE for errno.

If an underflow occurs, powf returns a denormal number and sets the macro ERANGE for errno.

[Description]

This function calculates the yth power of x.