projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| c9cf6dde | 1 | /* Return current rounding direction. |
| b168057a | 2 | Copyright (C) 1997-2015 Free Software Foundation, Inc. |
| c9cf6dde AJ |
3 | This file is part of the GNU C Library. |
| 4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. | |
| 5 | ||
| 6 | The GNU C Library is free software; you can redistribute it and/or | |
| 7 | modify it under the terms of the GNU Lesser General Public | |
| 8 | License as published by the Free Software Foundation; either | |
| 9 | version 2.1 of the License, or (at your option) any later version. | |
| 10 | ||
| 11 | The GNU C Library is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | Lesser General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU Lesser General Public | |
| 59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
| 18 | <http://www.gnu.org/licenses/>. */ | |
| c9cf6dde AJ |
19 | |
| 20 | #include <fenv.h> | |
| 21 | ||
| 22 | int | |
| 23 | fegetround (void) | |
| 24 | { | |
| 25 | int cw; | |
| 26 | /* We only check the x87 FPU unit. The SSE unit should be the same | |
| 27 | - and if it's not the same there's no way to signal it. */ | |
| 28 | ||
| 29 | __asm__ ("fnstcw %0" : "=m" (*&cw)); | |
| 30 | ||
| 31 | return cw & 0xc00; | |
| 32 | } | |
| 3c1c46a6 | 33 | libm_hidden_def (fegetround) |