projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 0ac5ae23 UD |
1 | /* Copyright (C) 2011 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. | |
| 3 | Contributed by Ulrich Drepper <drepper@gmail.com>, 2011. | |
| f7eac6eb | 4 | |
| 0ac5ae23 UD |
5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| f7eac6eb | 9 | |
| 0ac5ae23 UD |
10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| f7eac6eb | 14 | |
| 0ac5ae23 UD |
15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, write to the Free | |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 18 | 02111-1307 USA. */ | |
| f7eac6eb | 19 | |
| 0ac5ae23 | 20 | #include <fenv.h> |
| 9d13fb24 | 21 | #include <math.h> |
| 9277c064 | 22 | #include <math_private.h> |
| f7eac6eb RM |
23 | |
| 24 | ||
| 0ac5ae23 UD |
25 | /* wrapper logf(x) */ |
| 26 | float | |
| 27 | __logf (float x) | |
| f7eac6eb | 28 | { |
| 0ac5ae23 UD |
29 | if (__builtin_expect (x <= 0.0f, 0) && _LIB_VERSION != _IEEE_) |
| 30 | { | |
| 31 | if (x == 0.0f) | |
| 32 | { | |
| 33 | feraiseexcept (FE_DIVBYZERO); | |
| 34 | return __kernel_standard_f (x, x, 116); /* log(0) */ | |
| 35 | } | |
| 36 | else | |
| 37 | { | |
| 38 | feraiseexcept (FE_INVALID); | |
| 39 | return __kernel_standard_f (x, x, 117); /* log(x<0) */ | |
| 40 | } | |
| 41 | } | |
| 42 | ||
| 43 | return __ieee754_logf (x); | |
| f7eac6eb RM |
44 | } |
| 45 | weak_alias (__logf, logf) |