UniformVMatrix.h

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// -*- C++ -*-

// PLearn (A C++ Machine Learning Library)
// Copyright (C) 1998 Pascal Vincent
// Copyright (C) 1999-2001 Pascal Vincent, Yoshua Bengio, Rejean Ducharme and University of Montreal
// Copyright (C) 2002 Pascal Vincent, Julien Keable, Xavier Saint-Mleux
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// 
//  1. Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
// 
//  2. Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
// 
//  3. The name of the authors may not be used to endorse or promote
//     products derived from this software without specific prior written
//     permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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// This file is part of the PLearn library. For more information on the PLearn
// library, go to the PLearn Web site at www.plearn.org


/* *******************************************************      
   * $Id: UniformVMatrix.h,v 1.4 2004/04/05 23:08:23 morinf Exp $
   ******************************************************* */


#ifndef UniformVMatrix_INC
#define UniformVMatrix_INC

#include "VMat.h"

namespace PLearn {
using namespace std;
 

class UniformVMatrix: public VMatrix
{
  typedef VMatrix inherited;

 protected:
  real minval;
  real maxval;
  
 public:
  // ******************
  // *  Constructors  *
  // ******************
  UniformVMatrix(); 

  UniformVMatrix(real the_minval, real the_maxval, int the_width);    

  PLEARN_DECLARE_OBJECT(UniformVMatrix);
  static void declareOptions(OptionList &ol);

  virtual void build();

  virtual real get(int i, int j) const;
  virtual void getSubRow(int i, int j, Vec v) const;
private:
    void build_();
};

DECLARE_OBJECT_PTR(UniformVMatrix);

} // end of namespcae PLearn
#endif

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