60 lines
1.9 KiB
C
Executable File
60 lines
1.9 KiB
C
Executable File
/*
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Copyright (C) 1994-1995 Apogee Software, Ltd.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _watcom_h_public
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#define _watcom_h_public
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fixed FixedMul(fixed a, fixed b);
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fixed FixedDiv2(fixed a, fixed b);
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fixed FixedScale(fixed orig, fixed factor, fixed divisor);
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fixed FixedMulShift(fixed a, fixed b, fixed shift);
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#ifdef __WATCOMC__
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#pragma aux FixedMul = \
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"imul ebx", \
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"add eax, 8000h" \
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"adc edx,0h" \
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"shrd eax,edx,16" \
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parm [eax] [ebx] \
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value [eax] \
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modify exact [eax edx]
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#pragma aux FixedMulShift = \
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"imul ebx", \
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"shrd eax,edx,cl" \
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parm [eax] [ebx] [ecx]\
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value [eax] \
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modify exact [eax edx]
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#pragma aux FixedDiv2 = \
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"cdq", \
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"shld edx,eax,16", \
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"sal eax,16", \
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"idiv ebx" \
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parm [eax] [ebx] \
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value [eax] \
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modify exact [eax edx]
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#pragma aux FixedScale = \
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"imul ebx", \
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"idiv ecx" \
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parm [eax] [ebx] [ecx]\
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value [eax] \
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modify exact [eax edx]
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#endif
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#endif
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