| 1 | /* Set current rounding direction. |
|---|
| 2 | Copyright (C) 1997-2024 Free Software Foundation, Inc. |
|---|
| 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 |
|---|
| 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. |
|---|
| 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 |
|---|
| 13 | Lesser General Public License for more details. |
|---|
| 14 | |
|---|
| 15 | You should have received a copy of the GNU Lesser General Public |
|---|
| 16 | License along with the GNU C Library; if not, see |
|---|
| 17 | <https://www.gnu.org/licenses/>. */ |
|---|
| 18 | |
|---|
| 19 | #include <fenv.h> |
|---|
| 20 | #include <fenv_private.h> |
|---|
| 21 | |
|---|
| 22 | int |
|---|
| 23 | __fesetround (int round) |
|---|
| 24 | { |
|---|
| 25 | fenv_t tmp; |
|---|
| 26 | |
|---|
| 27 | if ((round & ~__FE_ROUND_MASK) != 0) |
|---|
| 28 | /* ROUND is no valid rounding mode. */ |
|---|
| 29 | return 1; |
|---|
| 30 | |
|---|
| 31 | __fenv_stfsr (tmp); |
|---|
| 32 | tmp &= ~__FE_ROUND_MASK; |
|---|
| 33 | tmp |= round; |
|---|
| 34 | __fenv_ldfsr (tmp); |
|---|
| 35 | |
|---|
| 36 | return 0; |
|---|
| 37 | } |
|---|
| 38 | libm_hidden_def (__fesetround) |
|---|
| 39 | weak_alias (__fesetround, fesetround) |
|---|
| 40 | libm_hidden_weak (fesetround) |
|---|
| 41 | |
|---|
