+++ /dev/null
-/* Math functions for i387.
- Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by John C. Bowman <bowman@ipp-garching.mpg.de>, 1995.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <w32k.h>
-
-/*
- * FIXME! Is there a better algorithm. like FT_MulDiv
- *
- * @implemented
- */
-INT STDCALL EngMulDiv(
- INT nMultiplicand,
- INT nMultiplier,
- INT nDivisor)
-{
-#if SIZEOF_LONG_LONG >= 8
- long long ret;
-
- if (!nDivisor) return -1;
-
- /* We want to deal with a positive divisor to simplify the logic. */
- if (nDivisor < 0)
- {
- nMultiplicand = - nMultiplicand;
- nDivisor = -nDivisor;
- }
-
- /* If the result is positive, we "add" to round. else, we subtract to round. */
- if ( ( (nMultiplicand < 0) && (nMultiplier < 0) ) ||
- ( (nMultiplicand >= 0) && (nMultiplier >= 0) ) )
- ret = (((long long)nMultiplicand * nMultiplier) + (nDivisor/2)) / nDivisor;
- else
- ret = (((long long)nMultiplicand * nMultiplier) - (nDivisor/2)) / nDivisor;
-
- if ((ret > 2147483647) || (ret < -2147483647)) return -1;
- return ret;
-#else
- if (!nDivisor) return -1;
-
- /* We want to deal with a positive divisor to simplify the logic. */
- if (nDivisor < 0)
- {
- nMultiplicand = - nMultiplicand;
- nDivisor = -nDivisor;
- }
-
- /* If the result is positive, we "add" to round. else, we subtract to round. */
- if ( ( (nMultiplicand < 0) && (nMultiplier < 0) ) ||
- ( (nMultiplicand >= 0) && (nMultiplier >= 0) ) )
- return ((nMultiplicand * nMultiplier) + (nDivisor/2)) / nDivisor;
-
- return ((nMultiplicand * nMultiplier) - (nDivisor/2)) / nDivisor;
-
-#endif
-}