//  SMESH SMDS : implementaion of Salome mesh data structure
//
//  Copyright (C) 2003  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
//  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS 
// 
//  This library is free software; you can redistribute it and/or 
//  modify it under the terms of the GNU Lesser General Public 
//  License as published by the Free Software Foundation; either 
//  version 2.1 of the License. 
// 
//  This library 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 
//  Lesser General Public License for more details. 
// 
//  You should have received a copy of the GNU Lesser General Public 
//  License along with this library; if not, write to the Free Software 
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA 
// 
//  See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org 
//
//
//
//  File   : SMDS_PntHasher.lxx
//  Author : Jean-Michel BOULCOURT
//  Module : SMESH

#include <gp_Pnt.hxx>

static Standard_Real tab1[3];
static Standard_Real tab2[3];

//=======================================================================
//function : HashCode
//purpose  : 
//=======================================================================
inline Standard_Integer  SMDS_PntHasher::HashCode
  (const gp_Pnt& point, const Standard_Integer Upper)
{
  union 
    {
    Standard_Real R[3];
    Standard_Integer I[6];
    } U;

  point.Coord(U.R[0],U.R[1],U.R[2]);  

  return ::HashCode(U.I[0]/23+U.I[1]/19+U.I[2]/17+U.I[3]/13+U.I[4]/11+U.I[5]/7,Upper);
  //  return ::HashCode((U.I[0]>>4)+(U.I[1]>>3)+(U.I[2]>>2)+(U.I[3]>>1)+(U.I[4]>>4)+(U.I[5]>>3),Upper);

}

//=======================================================================
//function : IsEqual
//purpose  : 
//=======================================================================
inline Standard_Boolean  SMDS_PntHasher::IsEqual
  (const gp_Pnt& point1, const gp_Pnt& point2)
{
  point1.Coord(tab1[0],tab1[1],tab1[2]);  
  point2.Coord(tab2[0],tab2[1],tab2[2]);  
  return (memcmp(tab1,tab2,sizeof(tab1)) == 0);
}