3 /* @(#)w_pow.c 5.2 93/10/01 */
5 * ====================================================
6 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
8 * Developed at SunPro, a Sun Microsystems, Inc. business.
9 * Permission to use, copy, modify, and distribute this
10 * software is freely granted, provided that this notice
12 * ====================================================
16 * wrapper pow(x,y) return x**y
20 #include "math_private.h"
24 double __pow(double x, double y) /* wrapper pow */
26 double __pow(x,y) /* wrapper pow */
31 return __ieee754_pow(x,y);
35 if(_LIB_VERSION == _IEEE_|| __isnan(y)) return z;
38 return __kernel_standard(x,y,42); /* pow(NaN,0.0) */
44 return __kernel_standard(x,y,20); /* pow(0.0,0.0) */
45 if(__finite(y)&&y<0.0) {
46 if (signbit (x) && signbit (z))
47 return __kernel_standard(x,y,23); /* pow(-0.0,negative) */
49 return __kernel_standard(x,y,43); /* pow(+0.0,negative) */
54 if(__finite(x)&&__finite(y)) {
56 return __kernel_standard(x,y,24); /* pow neg**non-int */
58 return __kernel_standard(x,y,21); /* pow overflow */
61 if(z==0.0&&__finite(x)&&__finite(y))
62 return __kernel_standard(x,y,22); /* pow underflow */
66 weak_alias (__pow, pow)
68 strong_alias (__pow, __powl)
69 weak_alias (__pow, powl)