//===========================================================================
// Copyright (C) 1998, 2000-2007, 2010, 2011, 2012 SINTEF ICT, Applied
// Mathematics, Norway.
//
// This file is part of GoTools
//
// 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 version 2 of the License. 
//
// 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, see <http://www.gnu.org/licenses>
//
// Contact information: E-mail: tor.dokken@sintef.no                      
// SINTEF ICT, Department of Applied Mathematics,                         
// P.O. Box 124 Blindern,                                                 
// 0314 Oslo, Norway.                                                     
//
// Other licenses are also available for this software, notably licenses
// for:
// - Building commercial software.                                        
// - Building software whose source code you wish to keep private.        
//===========================================================================

#include "sisl-copyright.h"

/*
 *
 * $Id: s6diff.c,v 1.1 1994-04-21 12:10:42 boh Exp $
 *
 */


#define S6DIFF

#include "sislP.h"

#if defined(SISLNEEDPROTOTYPES)
void 
s6diff(double e1[],double e2[],int idim,double e3[])
#else
void s6diff(e1,e2,idim,e3)
     double e1[];
     double e2[];
     double e3[];
     int    idim;
#endif
/*
*********************************************************************
*                                                                   
* PURPOSE    : To calculate the difference between two vectors
*
* INPUT      : e1      - The first vector
*              e2      - The second vector
*              idim    - Number of dimensions in the space the vectors lie
*
* OUTPUT     : 
*              e3      - The difference of e1 and e2
*
* METHOD     : The difference is calculated by vetor substraction
*-
* CALLS      :
*
* WRITTEN BY : Tor Dokken, SI, Oslo, Norway. 1988-june-1988
*                                  
*********************************************************************
*/
{
  int ki;
  for (ki=0;ki<idim;ki++)
    e3[ki] = e1[ki] - e2[ki];
  return;
}
