v4k-git-backup/demos/ports/doom/src/m_fixed.h

48 lines
1.2 KiB
C++

// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id:$
//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This source is available for distribution and/or modification
// only under the terms of the DOOM Source Code License as
// published by id Software. All rights reserved.
//
// The source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
// for more details.
//
// DESCRIPTION:
// Fixed point arithemtics, implementation.
//
//-----------------------------------------------------------------------------
#ifndef __M_FIXED__
#define __M_FIXED__
//
// Fixed point, 32bit as 16.16.
//
#define FRACBITS 16
#define FRACUNIT (1<<FRACBITS)
typedef int fixed_t;
fixed_t FixedMul(fixed_t a, fixed_t b);
fixed_t FixedDiv(fixed_t a, fixed_t b);
fixed_t FixedDiv2(fixed_t a, fixed_t b);
#endif
//-----------------------------------------------------------------------------
//
// $Log:$
//
//-----------------------------------------------------------------------------