/* @(#)w_pow.c 1.3 95/01/18 */

/*

 * ====================================================

 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.

 *

 * Developed at SunSoft, a Sun Microsystems, Inc. business.

 * Permission to use, copy, modify, and distribute this

 * software is freely granted, provided that this notice 

 * is preserved.

 * ====================================================

 */

/* 

 * wrapper pow(x,y) return x**y

 */

#include "fdlibm.h"

#ifdef __STDC__

	double pow(double x, double y)	/* wrapper pow */

#else

	double pow(x,y)			/* wrapper pow */

	double x,y;

#endif

{

#ifdef _IEEE_LIBM

	return  __ieee754_pow(x,y);

#else

	double z;

	z=__ieee754_pow(x,y);

	if(_LIB_VERSION == _IEEE_|| isnan(y)) return z;

	if(isnan(x)) {

	    if(y==0.0) 

	        return __kernel_standard(x,y,42); /* pow(NaN,0.0) */

	    else 

		return z;

	}

	if(x==0.0){ 

	    if(y==0.0)

	        return __kernel_standard(x,y,20); /* pow(0.0,0.0) */

	    if(finite(y)&&y<0.0)

	        return __kernel_standard(x,y,23); /* pow(0.0,negative) */

	    return z;

	}

	if(!finite(z)) {

	    if(finite(x)&&finite(y)) {

	        if(isnan(z))

	            return __kernel_standard(x,y,24); /* pow neg**non-int */

	        else 

	            return __kernel_standard(x,y,21); /* pow overflow */

	    }

	} 

	if(z==0.0&&finite(x)&&finite(y))

	    return __kernel_standard(x,y,22); /* pow underflow */

	return z;

#endif

}