1 /* w_powf.c -- float version of w_pow.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
9 * Developed at SunPro, a Sun Microsystems, Inc. business.
10 * Permission to use, copy, modify, and distribute this
11 * software is freely granted, provided that this notice
13 * ====================================================
16 #if defined(LIBM_SCCS) && !defined(lint)
17 static char rcsid[] = "$NetBSD: w_powf.c,v 1.3 1995/05/10 20:49:41 jtc Exp $";
21 * wrapper powf(x,y) return x**y
25 #include "math_private.h"
29 float __powf(float x, float y) /* wrapper powf */
31 float __powf(x,y) /* wrapper powf */
36 return __ieee754_powf(x,y);
39 z=__ieee754_powf(x,y);
40 if(_LIB_VERSION == _IEEE_|| __isnanf(y)) return z;
44 return (float)__kernel_standard((double)x,(double)y,142);
51 return (float)__kernel_standard((double)x,(double)y,120);
52 if(__finitef(y)&&y<(float)0.0) {
53 if (signbit (x) && signbit (z))
54 /* powf(0.0,negative) */
55 return (float)__kernel_standard((double)x,(double)y,123);
57 return (float)__kernel_standard((double)x,(double)y,143);
62 if(__finitef(x)&&__finitef(y)) {
64 /* powf neg**non-int */
65 return (float)__kernel_standard((double)x,(double)y,124);
68 return (float)__kernel_standard((double)x,(double)y,121);
71 if(z==(float)0.0&&__finitef(x)&&__finitef(y))
73 return (float)__kernel_standard((double)x,(double)y,122);
77 weak_alias (__powf, powf)