1 /* @(#)e_scalb.c 5.1 93/09/24 */
3 * ====================================================
4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
6 * Developed at SunPro, a Sun Microsystems, Inc. business.
7 * Permission to use, copy, modify, and distribute this
8 * software is freely granted, provided that this notice
10 * ====================================================
13 #if defined(LIBM_SCCS) && !defined(lint)
14 static char rcsid[] = "$NetBSD: e_scalb.c,v 1.6 1995/05/10 20:46:09 jtc Exp $";
18 * __ieee754_scalb(x, fn) is provide for
19 * passing various standard test suite. One
20 * should use scalbn() instead.
25 #include "math_private.h"
29 double __ieee754_scalb(double x, int fn)
31 double __ieee754_scalb(x,fn)
36 double __ieee754_scalb(double x, double fn)
38 double __ieee754_scalb(x,fn)
44 return __scalbn(x,fn);
46 if (__isnan(x)||__isnan(fn)) return x*fn;
48 if(fn>0.0) return x*fn;
51 else if (!__finite (x))
54 feraiseexcept (FE_INVALID);
63 feraiseexcept (FE_INVALID);
67 if ( fn > 65000.0) return __scalbn(x, 65000);
68 if (-fn > 65000.0) return __scalbn(x,-65000);
69 return __scalbn(x,(int)fn);