2 * ====================================================
3 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
5 * Developed at SunPro, a Sun Microsystems, Inc. business.
6 * Permission to use, copy, modify, and distribute this
7 * software is freely granted, provided that this notice
9 * ====================================================
13 * __ieee754_scalb(x, fn) is provide for
14 * passing various standard test suite. One
15 * should use scalbn() instead.
19 #include "math_private.h"
22 double attribute_hidden __ieee754_scalb(double x, int fn)
24 double attribute_hidden __ieee754_scalb(double x, double fn)
30 if (isnan(x)||isnan(fn)) return x*fn;
32 if(fn>0.0) return x*fn;
35 if (rint(fn)!=fn) return (fn-fn)/(fn-fn);
36 if ( fn > 65000.0) return scalbn(x, 65000);
37 if (-fn > 65000.0) return scalbn(x,-65000);
38 return scalbn(x,(int)fn);