ref: c17c0b4eacee443b75f13ad7baf0c5eefb24237a
dir: /rott/watcom.h/
/*
Copyright (C) 1994-1995 Apogee Software, Ltd.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _watcom_h_public
#define _watcom_h_public
fixed FixedMul(fixed a, fixed b);
fixed FixedDiv2(fixed a, fixed b);
fixed FixedScale(fixed orig, fixed factor, fixed divisor);
fixed FixedMulShift(fixed a, fixed b, fixed shift);
#ifdef __WATCOMC__
#pragma aux FixedMul = \
"imul ebx", \
"add eax, 8000h" \
"adc edx,0h" \
"shrd eax,edx,16" \
parm [eax] [ebx] \
value [eax] \
modify exact [eax edx]
#pragma aux FixedMulShift = \
"imul ebx", \
"shrd eax,edx,cl" \
parm [eax] [ebx] [ecx]\
value [eax] \
modify exact [eax edx]
#pragma aux FixedDiv2 = \
"cdq", \
"shld edx,eax,16", \
"sal eax,16", \
"idiv ebx" \
parm [eax] [ebx] \
value [eax] \
modify exact [eax edx]
#pragma aux FixedScale = \
"imul ebx", \
"idiv ecx" \
parm [eax] [ebx] [ecx]\
value [eax] \
modify exact [eax edx]
#endif
#endif