projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| d5efd131 | 1 | /* Set current rounding direction. |
| 04277e02 | 2 | Copyright (C) 1999-2019 Free Software Foundation, Inc. |
| d5efd131 MF |
3 | This file is part of the GNU C Library. |
| 4 | Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 1999. | |
| 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 | |
| 75efb018 | 17 | License along with the GNU C Library; if not, see |
| 5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
| d5efd131 MF |
19 | |
| 20 | #include <fenv.h> | |
| 21 | ||
| 22 | int | |
| 01238691 | 23 | __fesetround (int round) |
| d5efd131 MF |
24 | { |
| 25 | fenv_t fpsr; | |
| 26 | ||
| 27 | if (round & ~3) | |
| 28 | return 1; | |
| 29 | ||
| 30 | /* Get the current state. */ | |
| 31 | __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr)); | |
| 32 | ||
| 33 | /* Set the relevant bits. */ | |
| 34 | fpsr = (fpsr & ~(3UL << 10)) | ((fenv_t) round << 10); | |
| 35 | ||
| 36 | /* Put the new state in effect. */ | |
| 37 | __asm__ __volatile__ ("mov.m ar.fpsr=%0" :: "r" (fpsr) : "memory"); | |
| 38 | ||
| 39 | return 0; | |
| 40 | } | |
| 01238691 JM |
41 | libm_hidden_def (__fesetround) |
| 42 | weak_alias (__fesetround, fesetround) | |
| 43 | libm_hidden_weak (fesetround) |