/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 */

#ifndef _HPPA_MUL_H_
#define _HPPA_MUL_H_

#include "Fundamentals.h"

enum MultiplicationOperation
{
  maZero,                           // total = 0
  maMultiplicand,				    // total = multiplicand
  maShiftValue,					    // total = value << shiftBy
  maAddValueToShiftMultiplicand,    // total = value + (multiplicand << shiftBy)
  maSubShiftMultiplicandFromValue,  // total = value - (multiplicand << shiftBy)
  maAddValueToShiftValue,		    // total = (value << shiftBy) + value
  maSubValueFromShiftValue,		    // total = (value << shiftBy) - value
  maAddMultiplicandToShiftValue,    // total = (value << shiftBy) + multiplicand
  maSubMultiplicandFromShiftValue,  // total = (value << shiftBy) - multiplicand
};

struct MulAlgorithm
{
  PRInt16                 cost;
  PRUint16                nOperations;
  MultiplicationOperation operations[32];
  PRUint8                 shiftAmount[32];
};

extern bool getMulAlgorithm(MulAlgorithm* algorithm, PRUint32 multiplicand, PRInt16 maxCost);

#endif /* _HPPA_MUL_H_ */