lavd.h

Go to the documentation of this file.

// -*-C++-*- 

// Copyright (C) 2004 
// Christian Stimming <stimming@tuhh.de>

// 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, or (at
// your option) any later version.

// 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; see the file COPYING.  If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.

//      LAPACK++ (V. 1.1)
//      (C) 1992-1996 All Rights Reserved.

#ifndef _LA_VECTOR_DOUBLE_H_
#define _LA_VECTOR_DOUBLE_H_

#include "lafnames.h"
#include LA_GEN_MAT_DOUBLE_H


class DLLIMPORT LaVectorDouble: public LaGenMatDouble
{
   public:

      LaVectorDouble();

      LaVectorDouble(int n);

      LaVectorDouble(int m, int n);  

      LaVectorDouble(double* v, int n);

      //LaVectorDouble(double* v, int m, int n);

      LaVectorDouble(const LaGenMatDouble& s);

      void resize(int n);

      void resize(int m, int n);


      inline int size() const;

      inline int inc() const;

      inline int start() const;

      inline int end() const;

      inline LaIndex index() const;

      inline double& operator()(int i);

      inline const double& operator()(int i) const ;

      inline LaVectorDouble operator()(const LaIndex& i);

      inline LaVectorDouble operator()(const LaIndex& i) const;
    
      LaVectorDouble& operator=(double s);

      LaVectorDouble& operator=(const LaGenMatDouble&s);

      LaVectorDouble& inject(const LaGenMatDouble &s);

      LaVectorDouble& copy(const LaGenMatDouble &s);

      LaVectorDouble& ref(const LaGenMatDouble &);
};

// NOTE: we default to column vectors, since matrices are column
//  oriented.

inline LaVectorDouble::LaVectorDouble() : LaGenMatDouble(0,1) {}
inline LaVectorDouble::LaVectorDouble(int i) : LaGenMatDouble(i,1) {}

// NOTE: one shouldn't be using this method to initalize, but
// it is here so that the constructor can be overloaded with 
// a runtime test.
//
inline LaVectorDouble::LaVectorDouble(int m, int n) : LaGenMatDouble(m,n)
{
   assert(n==1 || m==1);
}

inline LaVectorDouble::LaVectorDouble(double *d, int m) : 
   LaGenMatDouble(d,m,1) {}

#if 0
inline LaVectorDouble::LaVectorDouble(double *d, int m, int n) : 
   LaGenMatDouble(d,m,n) {}
#endif

inline LaVectorDouble::LaVectorDouble(const LaGenMatDouble& G) : 
   LaGenMatDouble(G)
{
   assert(G.size(0)==1 || G.size(1)==1);
}

inline void LaVectorDouble::resize(int i)
{
   // Always resizes to column vector, similar to the one-argument
   // constructor. If you want a row vector, use the two-argument
   // resize().
   LaGenMatDouble::resize(i, 1);  // column vector
}

inline void LaVectorDouble::resize(int m, int n)
{
   assert(n==1 || m==1);
   LaGenMatDouble::resize(m, n);
}

        
//note that vectors can be either stored columnwise, or row-wise

// this will handle the 0x0 case as well.

inline int LaVectorDouble::size() const 
{
   return LaGenMatDouble::size(0)*LaGenMatDouble::size(1); 
}

inline double& LaVectorDouble::operator()(int i)
{
   if (LaGenMatDouble::size(0)==1 )
      return LaGenMatDouble::operator()(0,i);
   else
      return LaGenMatDouble::operator()(i,0);
}

inline const double& LaVectorDouble::operator()(int i) const
{
   if (LaGenMatDouble::size(0)==1 )
      return LaGenMatDouble::operator()(0,i);
   else
      return LaGenMatDouble::operator()(i,0);
}

inline LaVectorDouble LaVectorDouble::operator()(const LaIndex& I)
{
   if (LaGenMatDouble::size(0)==1)
      return LaGenMatDouble::operator()(LaIndex(0,0),I).shallow_assign(); 
   else
      return LaGenMatDouble::operator()(I,LaIndex(0,0)).shallow_assign(); 
}

inline LaVectorDouble LaVectorDouble::operator()(const LaIndex& I) const
{
   if (LaGenMatDouble::size(0)==1)
      return LaGenMatDouble::operator()(LaIndex(0,0),I).shallow_assign(); 
   else
      return LaGenMatDouble::operator()(I,LaIndex(0,0)).shallow_assign(); 
}


inline LaVectorDouble& LaVectorDouble::copy(const LaGenMatDouble &A)
{
   assert(A.size(0) == 1 || A.size(1) == 1);   //make sure rhs is a
   // a vector.
   LaGenMatDouble::copy(A);
   return *this;
}

inline LaVectorDouble& LaVectorDouble::operator=(const LaGenMatDouble &A)
{
   return copy(A);
}

inline LaVectorDouble& LaVectorDouble::ref(const LaGenMatDouble &A)
{
   assert(A.size(0) == 1 || A.size(1) == 1);
   LaGenMatDouble::ref(A);
   return *this;
}

inline LaVectorDouble& LaVectorDouble::operator=(double d)
{
   LaGenMatDouble::operator=(d);
   return *this;
}

inline LaVectorDouble& LaVectorDouble::inject(const LaGenMatDouble &A)
{
   assert(A.size(0) == 1 || A.size(1) == 1);
   LaGenMatDouble::inject(A);
   return *this;
}
    
inline int LaVectorDouble::inc() const
{
   if (LaGenMatDouble::size(1)==1 )
      return LaGenMatDouble::inc(0);
   else
      return LaGenMatDouble::inc(1)*LaGenMatDouble::gdim(0);
   // NOTE: This was changed on 2005-03-04 because without the dim[0]
   // this gives wrong results on non-unit-stride submatrix views.
}

inline LaIndex LaVectorDouble::index() const
{
   if (LaGenMatDouble::size(1)==1 )
      return LaGenMatDouble::index(0);
   else
      return LaGenMatDouble::index(1);
}

inline int LaVectorDouble::start() const
{
   if (LaGenMatDouble::size(1)==1 )
      return LaGenMatDouble::start(0);
   else
      return LaGenMatDouble::start(1);
}

inline int LaVectorDouble::end() const
{
   if (LaGenMatDouble::size(1)==1 )
      return LaGenMatDouble::end(0);
   else
      return LaGenMatDouble::end(1);
}

#endif 
// _LA_VECTOR_DOUBLE_H_

---