diff options
Diffstat (limited to 'sysdeps/x86_64/fpu/fsetexcptflg.c')
-rw-r--r-- | sysdeps/x86_64/fpu/fsetexcptflg.c | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/sysdeps/x86_64/fpu/fsetexcptflg.c b/sysdeps/x86_64/fpu/fsetexcptflg.c deleted file mode 100644 index ffc44dcad5..0000000000 --- a/sysdeps/x86_64/fpu/fsetexcptflg.c +++ /dev/null @@ -1,53 +0,0 @@ -/* Set floating-point environment exception handling. - Copyright (C) 2001-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <fenv.h> -#include <math.h> - -int -fesetexceptflag (const fexcept_t *flagp, int excepts) -{ - fenv_t temp; - unsigned int mxcsr; - - /* XXX: Do we really need to set both the exception in both units? - Shouldn't it be enough to set only the SSE unit? */ - - /* Get the current x87 FPU environment. We have to do this since we - cannot separately set the status word. */ - __asm__ ("fnstenv %0" : "=m" (*&temp)); - - temp.__status_word &= ~(excepts & FE_ALL_EXCEPT); - temp.__status_word |= *flagp & excepts & FE_ALL_EXCEPT; - - /* Store the new status word (along with the rest of the environment. - Possibly new exceptions are set but they won't get executed unless - the next floating-point instruction. */ - __asm__ ("fldenv %0" : : "m" (*&temp)); - - /* And now the same for SSE. */ - __asm__ ("stmxcsr %0" : "=m" (*&mxcsr)); - - mxcsr &= ~(excepts & FE_ALL_EXCEPT); - mxcsr |= *flagp & excepts & FE_ALL_EXCEPT; - - __asm__ ("ldmxcsr %0" : : "m" (*&mxcsr)); - - /* Success. */ - return 0; -} |