fegetexcept.c 991 B

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  1. /* Get enabled floating-point exceptions.
  2. Copyright (C) 2000-2025 Free Software Foundation, Inc.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library. If not, see
  13. <https://www.gnu.org/licenses/>. */
  14. #include <fenv.h>
  15. int
  16. fegetexcept (void)
  17. {
  18. unsigned int exc;
  19. /* Get the current control register contents. */
  20. __asm__ ("fmove%.l %!,%0" : "=dm" (exc));
  21. return (exc >> 6) & FE_ALL_EXCEPT;
  22. }