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  1. /*
  2. * simple math operations
  3. * Copyright (c) 2001, 2002 Fabrice Bellard.
  4. * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
  5. *
  6. * This file is part of FFmpeg.
  7. *
  8. * FFmpeg is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU Lesser General Public
  10. * License as published by the Free Software Foundation; either
  11. * version 2.1 of the License, or (at your option) any later version.
  12. *
  13. * FFmpeg is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16. * Lesser General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU Lesser General Public
  19. * License along with FFmpeg; if not, write to the Free Software
  20. * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21. */
  22. #if defined(ARCH_POWERPC_405)
  23. /* signed 16x16 -> 32 multiply add accumulate */
  24. # define MAC16(rt, ra, rb) \
  25. asm ("maclhw %0, %2, %3" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
  26. /* signed 16x16 -> 32 multiply */
  27. # define MUL16(ra, rb) \
  28. ({ int __rt;
  29. asm ("mullhw %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb));
  30. __rt; })
  31. #endif