| 1 | /* Set floating-point environment exception handling. |
|---|
| 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 <math.h> |
|---|
| 21 | |
|---|
| 22 | int |
|---|
| 23 | __fesetexceptflag (const fexcept_t *flagp, int excepts) |
|---|
| 24 | { |
|---|
| 25 | fexcept_t fpsr; |
|---|
| 26 | |
|---|
| 27 | /* Get the current status register. */ |
|---|
| 28 | __asm__ ("fmove%.l %/fpsr,%0" : "=dm" (fpsr)); |
|---|
| 29 | |
|---|
| 30 | /* Install the new exception bits in the Accrued Exception Byte. */ |
|---|
| 31 | fpsr &= ~(excepts & FE_ALL_EXCEPT); |
|---|
| 32 | fpsr |= *flagp & excepts & FE_ALL_EXCEPT; |
|---|
| 33 | |
|---|
| 34 | /* Store the new status register. */ |
|---|
| 35 | __asm__ __volatile__ ("fmove%.l %0,%/fpsr" : : "dm" (fpsr)); |
|---|
| 36 | |
|---|
| 37 | /* Success. */ |
|---|
| 38 | return 0; |
|---|
| 39 | } |
|---|
| 40 | |
|---|
| 41 | #include <shlib-compat.h> |
|---|
| 42 | #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) |
|---|
| 43 | strong_alias (__fesetexceptflag, __old_fesetexceptflag) |
|---|
| 44 | compat_symbol (libm, __old_fesetexceptflag, fesetexceptflag, GLIBC_2_1); |
|---|
| 45 | #endif |
|---|
| 46 | |
|---|
| 47 | versioned_symbol (libm, __fesetexceptflag, fesetexceptflag, GLIBC_2_2); |
|---|
| 48 | |
|---|
