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/* @(#)w_pow.c 5.2 93/10/01 *//* * ==================================================== * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. * * Developed at SunPro, 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 <math.h>#include "math_private.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) {	      if (signbit (x) && signbit (z))	        return __kernel_standard(x,y,23); /* pow(-0.0,negative) */	      else	        return __kernel_standard(x,y,43); /* 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}weak_alias (__pow, pow)#ifdef NO_LONG_DOUBLEstrong_alias (__pow, __powl)weak_alias (__pow, powl)#endif