projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 3846ef75 | 1 | /* Set current rounding direction. |
| f7a9f785 | 2 | Copyright (C) 1998-2016 Free Software Foundation, Inc. |
| 3846ef75 UD |
3 | This file is part of the GNU C Library. |
| 4 | Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998. | |
| 5 | ||
| 6 | The GNU C Library is free software; you can redistribute it and/or | |
| 41bdb6e2 AJ |
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. | |
| 3846ef75 UD |
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 | |
| 41bdb6e2 | 14 | Lesser General Public License for more details. |
| 3846ef75 | 15 | |
| 41bdb6e2 | 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/>. */ | |
| 3846ef75 UD |
19 | |
| 20 | #include <fenv.h> | |
| 21 | #include <fpu_control.h> | |
| 22 | ||
| 23 | int | |
| 01238691 | 24 | __fesetround (int round) |
| 3846ef75 | 25 | { |
| 04fb54b5 | 26 | fpu_control_t cw; |
| 3846ef75 | 27 | |
| 99ff6e5c | 28 | if ((round & ~0x1) != 0) |
| 3846ef75 | 29 | /* ROUND is no valid rounding mode. */ |
| f402708f | 30 | return 1; |
| 3846ef75 UD |
31 | |
| 32 | /* Get current state. */ | |
| 33 | _FPU_GETCW (cw); | |
| 34 | ||
| 35 | /* Set rounding bits. */ | |
| 99ff6e5c | 36 | cw &= ~0x1; |
| 3846ef75 UD |
37 | cw |= round; |
| 38 | /* Set new state. */ | |
| 39 | _FPU_SETCW (cw); | |
| 40 | ||
| f402708f | 41 | return 0; |
| 3846ef75 | 42 | } |
| 01238691 JM |
43 | libm_hidden_def (__fesetround) |
| 44 | weak_alias (__fesetround, fesetround) | |
| 45 | libm_hidden_weak (fesetround) |