src/m_fixed.h

   1 // Emacs style mode select   -*- C++ -*-
   2 //-----------------------------------------------------------------------------
   3 //
   4 // Copyright(C) 1993-1996 Id Software, Inc.
   5 // Copyright(C) 2005 Simon Howard
   6 //
   7 // This program is free software; you can redistribute it and/or
   8 // modify it under the terms of the GNU General Public License
   9 // as published by the Free Software Foundation; either version 2
  10 // of the License, or (at your option) any later version.
  11 //
  12 // This program is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License
  18 // along with this program; if not, write to the Free Software
  19 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  20 // 02111-1307, USA.
  21 //
  22 // DESCRIPTION:
  23 //      Fixed point arithemtics, implementation.
  24 //
  25 //-----------------------------------------------------------------------------
  26
  27
  28 #ifndef __M_FIXED__
  29 #define __M_FIXED__
  30
  31
  32
  33
  34 //
  35 // Fixed point, 32bit as 16.16.
  36 //
  37 #define FRACBITS                16
  38 #define FRACUNIT                (1<<FRACBITS)
  39
  40 typedef int fixed_t;
  41
  42 fixed_t FixedMul        (fixed_t a, fixed_t b);
  43 fixed_t FixedDiv        (fixed_t a, fixed_t b);
  44
  45
  46
  47 #endif