projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f7eac6eb RM |
1 | /* @(#)s_ldexp.c 5.1 93/09/24 */ |
| 2 | /* | |
| 3 | * ==================================================== | |
| 4 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. | |
| 5 | * | |
| 6 | * Developed at SunPro, a Sun Microsystems, Inc. business. | |
| 7 | * Permission to use, copy, modify, and distribute this | |
| c4029823 | 8 | * software is freely granted, provided that this notice |
| f7eac6eb RM |
9 | * is preserved. |
| 10 | * ==================================================== | |
| 11 | */ | |
| 12 | ||
| 13 | #if defined(LIBM_SCCS) && !defined(lint) | |
| 14 | static char rcsid[] = "$NetBSD: s_ldexp.c,v 1.6 1995/05/10 20:47:40 jtc Exp $"; | |
| 15 | #endif | |
| 16 | ||
| 9d13fb24 | 17 | #include <math.h> |
| 9277c064 | 18 | #include <math_private.h> |
| f7eac6eb RM |
19 | #include <errno.h> |
| 20 | ||
| 9f9834f5 PM |
21 | FLOAT |
| 22 | M_SUF (__ldexp) (FLOAT value, int exp) | |
| f7eac6eb | 23 | { |
| 9f9834f5 PM |
24 | if(!isfinite(value)||value==0) return value + value; |
| 25 | value = M_SCALBN(value,exp); | |
| 26 | if(!isfinite(value)||value==0) __set_errno (ERANGE); | |
| f7eac6eb RM |
27 | return value; |
| 28 | } | |
| 9f9834f5 PM |
29 | |
| 30 | declare_mgen_alias_2 (__ldexp, ldexp, scalbn); | |
| 31 | ||
| 32 | /* Note, versioning issues are punted to ldbl-opt in this case. */ |