// smatrix_elim.h: manages declarations of sparse integer matrix classes
//////////////////////////////////////////////////////////////////////////
//
// Copyright 1990-2012 John Cremona
// 
// This file is part of the eclib package.
// 
// eclib 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; either version 2 of the License, or (at your
// option) any later version.
// 
// eclib 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 eclib; if not, write to the Free Software Foundation,
// Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
// 
//////////////////////////////////////////////////////////////////////////
 
// Original version by Luiz Figueiredo
 
#ifndef _SMATRIX_ELIM_H
#define _SMATRIX_ELIM_H 1       //flags that this file has been included

#include "smatrix.h"
#include "subspace.h"

inline int
find( int X, int* ptr, int ub, int lb = 0 ) {
  int i;
  if( ptr[ub] < X ) return ub;
  while( ptr[lb] < X ) {
    i = (ub + lb)/2;
    ptr[i] < X ? (lb = i+1) : (ub = i);
  }
  return lb;
}

#undef scalar
#undef vec
#undef mat
#undef subspace
#undef svec
#undef smat
#undef smat_elim
#undef ssubspace

#define scalar int
#define vec vec_i
#define mat mat_i
#define subspace subspace_i
#define svec svec_i
#define smat smat_i
#define smat_elim smat_i_elim
#define ssubspace ssubspace_i
#include "smat_elim.h"

#undef scalar
#undef vec
#undef mat
#undef subspace
#undef svec
#undef smat
#undef smat_elim
#undef ssubspace

#define scalar long
#define vec vec_l
#define mat mat_l
#define subspace subspace_l
#define svec svec_l
#define smat smat_l
#define smat_elim smat_l_elim
#define ssubspace ssubspace_l
#include "smat_elim.h"

#undef scalar
#undef vec
#undef mat
#undef subspace
#undef svec
#undef smat
#undef smat_elim
#undef ssubspace

// SCALAR_OPTION may be set to 1 or 2 by user

#if (SCALAR_OPTION==1)
#define scalar int
#define vec vec_i
#define mat mat_i
#define subspace subspace_i
#define svec svec_i
#define smat smat_i
#define smat_elim smat_i_elim
#define ssubspace ssubspace_i
#else
#define scalar long
#define vec vec_l
#define mat mat_l
#define subspace subspace_l
#define svec svec_l
#define smat smat_l
#define smat_elim smat_l_elim
#define ssubspace ssubspace_l
#endif

// else user must use the unabbreviated names

#endif
