fedisblxcpt.c 1.2 KB

12345678910111213141516171819202122232425262728293031323334353637383940
  1. /* Disable floating-point exceptions.
  2. Copyright (C) 2013 Imagination Technologies Ltd.
  3. This file is part of the GNU C Library.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, write to the Free
  14. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  15. 02111-1307 USA. */
  16. #include <fenv.h>
  17. #include <unistd.h>
  18. #include "internal.h"
  19. int
  20. fedisableexcept (int excepts)
  21. {
  22. unsigned int old_exc;
  23. /* Get the current control word. */
  24. __asm__ ("MOV %0,TXDEFR" : "=r" (old_exc));
  25. old_exc &= FE_ALL_EXCEPT;
  26. excepts = old_exc & ~excepts;
  27. metag_set_fpu_flags(excepts);
  28. return old_exc;
  29. }