1 | /* s_ldexpl.c -- long double version of s_ldexp.c. |
2 | * Conversion to long double by Ulrich Drepper, |
3 | * Cygnus Support, drepper@cygnus.com. |
4 | */ |
5 | |
6 | /* |
7 | * ==================================================== |
8 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
9 | * |
10 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
11 | * Permission to use, copy, modify, and distribute this |
12 | * software is freely granted, provided that this notice |
13 | * is preserved. |
14 | * ==================================================== |
15 | */ |
16 | |
17 | #if defined(LIBM_SCCS) && !defined(lint) |
18 | static char rcsid[] = "$NetBSD: $" ; |
19 | #endif |
20 | |
21 | #include <math.h> |
22 | #include <math_private.h> |
23 | #include <errno.h> |
24 | |
25 | long double __ldexpl(long double value, int exp) |
26 | { |
27 | if(!isfinite(value)||value==0.0) return value + value; |
28 | value = __scalbnl(value,exp); |
29 | if(!isfinite(value)||value==0.0) __set_errno (ERANGE); |
30 | return value; |
31 | } |
32 | weak_alias (__ldexpl, ldexpl) |
33 | weak_alias (__ldexpl, scalbnl) |
34 | |