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