1 /* e_scalbf.c -- float version of e_scalb.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: e_scalbf.c,v 1.3 1995/05/10 20:46:12 jtc Exp $";
22 #include "math_private.h"
26 float __ieee754_scalbf(float x
, int fn
)
28 float __ieee754_scalbf(x
,fn
)
33 float __ieee754_scalbf(float x
, float fn
)
35 float __ieee754_scalbf(x
,fn
)
41 return __scalbnf(x
,fn
);
43 if (__isnanf(x
)||__isnanf(fn
)) return x
*fn
;
45 if(fn
>(float)0.0) return x
*fn
;
48 else if (!__finitef (x
))
51 feraiseexcept (FE_INVALID
);
60 feraiseexcept (FE_INVALID
);
64 if ( fn
> (float)65000.0) return __scalbnf(x
, 65000);
65 if (-fn
> (float)65000.0) return __scalbnf(x
,-65000);
66 return __scalbnf(x
,(int)fn
);