1 | /* s_ldexpf.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 | #if defined(LIBM_SCCS) && !defined(lint) |
17 | static char rcsid[] = "$NetBSD: s_ldexpf.c,v 1.3 1995/05/10 20:47:42 jtc Exp $" ; |
18 | #endif |
19 | |
20 | #include <math.h> |
21 | #include <math_private.h> |
22 | #include <errno.h> |
23 | |
24 | float __ldexpf(float value, int exp) |
25 | { |
26 | if(!isfinite(value)||value==(float)0.0) return value + value; |
27 | value = __scalbnf(value,exp); |
28 | if(!isfinite(value)||value==(float)0.0) __set_errno (ERANGE); |
29 | return value; |
30 | } |
31 | weak_alias (__ldexpf, ldexpf) |
32 | weak_alias (__ldexpf, scalbnf) |
33 | |