fsetexcptflg.c 1.3 KB

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  1. /* Set floating-point environment exception handling.
  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 <math.h>
  18. #include <unistd.h>
  19. #include "internal.h"
  20. int
  21. fesetexceptflag (const fexcept_t *flagp, int excepts)
  22. {
  23. unsigned int temp;
  24. /* Get the current exceptions. */
  25. __asm__ ("MOV %0,TXDEFR" : "=r" (temp));
  26. excepts &= FE_ALL_EXCEPT;
  27. excepts <<= 16;
  28. temp &= ~excepts;
  29. temp |= *flagp & excepts;
  30. metag_set_fpu_flags(temp);
  31. /* Success. */
  32. return 0;
  33. }