1 /* sf_ldexp.c -- float version of s_ldexp.c.
2  * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3  */
4 
5 /*
6  * ====================================================
7  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
8  *
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
12  * is preserved.
13  * ====================================================
14  */
15 
16 #include "fdlibm.h"
17 #include <errno.h>
18 
19 #ifdef __STDC__
ldexpf(float value,int exp)20 	float ldexpf(float value, int exp)
21 #else
22 	float ldexpf(value, exp)
23 	float value; int exp;
24 #endif
25 {
26 	if(!finitef(value)||value==(float)0.0) return value;
27 	value = scalbnf(value,exp);
28 	if(!finitef(value)||value==(float)0.0) errno = ERANGE;
29 	return value;
30 }
31 
32 #ifdef _DOUBLE_IS_32BITS
33 
34 #ifdef __STDC__
ldexp(double value,int exp)35 	double ldexp(double value, int exp)
36 #else
37 	double ldexp(value, exp)
38 	double value; int exp;
39 #endif
40 {
41 	return (double) ldexpf((float) value, exp);
42 }
43 
44 #endif /* defined(_DOUBLE_IS_32BITS) */
45