projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 0413b54c | 1 | /* Round a 32-bit floating point value to the nearest integer. |
| d4697bc9 | 2 | Copyright (C) 1997-2014 Free Software Foundation, Inc. |
| 0413b54c UD |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 41bdb6e2 AJ |
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. | |
| 0413b54c UD |
9 | |
| 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 | |
| 41bdb6e2 | 13 | Lesser General Public License for more details. |
| 0413b54c | 14 | |
| 41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
| 59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 0413b54c | 18 | |
| 1ed0291c | 19 | #include <math.h> |
| 0413b54c UD |
20 | |
| 21 | float | |
| 22 | __rintf (float x) | |
| 23 | { | |
| 24 | static const float TWO23 = 8388608.0; | |
| 25 | ||
| 26 | if (fabsf (x) < TWO23) | |
| 118bad87 UD |
27 | { |
| 28 | if (x > 0.0) | |
| 29 | { | |
| 30 | x += TWO23; | |
| 31 | x -= TWO23; | |
| 32 | } | |
| 33 | else if (x < 0.0) | |
| 34 | { | |
| b6299091 GK |
35 | x = TWO23 - x; |
| 36 | x = -(x - TWO23); | |
| 118bad87 UD |
37 | } |
| 38 | } | |
| 9c84384c | 39 | |
| 0413b54c UD |
40 | return x; |
| 41 | } | |
| 42 | weak_alias (__rintf, rintf) |