CPPLapack Code

//=============================================================================
/*! dgsmatrix=dgsmatrix operator */
inline dgsmatrix& dgsmatrix::operator=(const dgsmatrix& mat)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] dgsmatrix::operator=(const dgsmatrix&)"
            << std::endl;
#endif//CPPL_VERBOSE
  
  if(Array!=mat.Array){ // if it is NOT self substitution
    copy(mat);
  }
  return *this;
}

///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////

//=============================================================================
/*! dgsmatrix+=dgsmatrix operator */
inline dgsmatrix& dgsmatrix::operator+=(const dgsmatrix& mat)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] dgsmatrix::operator+=(const dgsmatrix&)"
            << std::endl;
#endif//CPPL_VERBOSE
  
#ifdef  CPPL_DEBUG
  if(N!=mat.N || M!=mat.M){
    std::cerr << "[ERROR] dgsmatrix::operator+=(const dgsmatrix&)"
              << std::endl
              << "These two matrises can not make a summation." << std::endl
              << "Your input was (" << M << "x" << N << ") += ("
              << mat.M << "x" << mat.N << ")." << std::endl;
    exit(1);
  }
#endif//CPPL_DEBUG
  
  for(long c=0; c<mat.VOL; c++){
    (*this)(mat.Indx[c],mat.Jndx[c]) +=mat.Array[c];
  }
  return *this;
}

//=============================================================================
/*! dgsmatrix-=dgsmatrix operator */
inline dgsmatrix& dgsmatrix::operator-=(const dgsmatrix& mat)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] dgsmatrix::operator-=(const dgsmatrix&)"
            << std::endl;
#endif//CPPL_VERBOSE
  
#ifdef  CPPL_DEBUG
  if(N!=mat.N || M!=mat.M){
    std::cerr << "[ERROR] dgsmatrix::operator-=(const dgsmatrix&)"
              << std::endl
              << "These two matrises can not make a sutraction." << std::endl
              << "Your input was (" << M << "x" << N << ") -= ("
              << mat.M << "x" << mat.N << ")." << std::endl;
    exit(1);
  }
#endif//CPPL_DEBUG
  
  for(long c=0; c<mat.VOL; c++){
    (*this)(mat.Indx[c],mat.Jndx[c]) -=mat.Array[c];
  }
  return *this;
}

//=============================================================================
/*! dgsmatrix*=dgsmatrix operator */
inline dgsmatrix& dgsmatrix::operator*=(const dgsmatrix& mat)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] dgsmatrix::operator*=(const dgsmatrix&)"
            << std::endl;
#endif//CPPL_VERBOSE
  
#ifdef  CPPL_DEBUG
  if(N!=mat.M){
    std::cerr << "[ERROR] dgsmatrix::operator*=(const dgsmatrix&)"
              << std::endl
              << "These two matrises can not make a product." << std::endl
              << "Your input was (" << M << "x" << N << ") *= ("
              << mat.M << "x" << mat.N << ")." << std::endl;
    exit(1);
  }
#endif//CPPL_DEBUG
  
  dgsmatrix newmat( M, mat.N, 0 );
  
  for(long c=0; c<VOL; c++){
    long k(Jndx[c]);
    std::vector< std::pair<long,long> >::iterator p;
    for(p=mat.Row[k].begin(); p!=mat.Row[k].end(); p++){
      newmat(Indx[c],p->first) +=Array[c]*mat.Array[p->second];
    }
  }
  
  swap(*this,newmat);
  return *this;
}

///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////

//=============================================================================
/*! dgsmatrix+dgsmatrix operator */
inline _dgsmatrix operator+(const dgsmatrix& matA, const dgsmatrix& matB)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] operator+(const dgsmatrix&, const dgsmatrix&)"
            << std::endl;
#endif//CPPL_VERBOSE
  
#ifdef  CPPL_DEBUG
  if(matA.N!=matB.N || matA.M!=matB.M){
    std::cerr << "[ERROR] operator+(dgsmatrix&, dgsmatrix&)" << std::endl
              << "These two matrises can not make a summation." << std::endl
              << "Your input was (" << matA.M << "x" << matA.N << ") + ("
              << matB.M << "x" << matB.N << ")." << std::endl;
    exit(1);
  }
#endif//CPPL_DEBUG
  
  dgsmatrix newmat(matA);
  
  for(long c=0; c<matB.VOL; c++){
    newmat(matB.Indx[c], matB.Jndx[c]) +=matB.Array[c];
  }
  
  return _(newmat);
}

//=============================================================================
/*! dgsmatrix-dgsmatrix operator */
inline _dgsmatrix operator-(const dgsmatrix& matA, const dgsmatrix& matB)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] operator-(const dgsmatrix&, const dgsmatrix&)"
            << std::endl;
#endif//CPPL_VERBOSE
  
#ifdef  CPPL_DEBUG
  if(matA.N!=matB.N || matA.M!=matB.M){
    std::cerr << "[ERROR] operator-(dgsmatrix&, dgsmatrix&)" << std::endl
              << "These two matrises can not make a subtraction." << std::endl
              << "Your input was (" << matA.M << "x" << matA.N << ") - ("
              << matB.M << "x" << matB.N << ")." << std::endl;
    exit(1);
  }
#endif//CPPL_DEBUG

  dgsmatrix newmat(matA);
  
  for(long c=0; c<matB.VOL; c++){
    newmat(matB.Indx[c], matB.Jndx[c]) -=matB.Array[c];
  }
  
  return _(newmat);
}

//=============================================================================
/*! dgsmatrix*dgsmatrix operator */
inline _dgsmatrix operator*(const dgsmatrix& matA, const dgsmatrix& matB)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] operator*(const dgsmatrix&, const dgsmatrix&)"
            << std::endl;
#endif//CPPL_VERBOSE
  
#ifdef  CPPL_DEBUG
  if(matA.N!=matB.M){
    std::cerr << "[ERROR] operator*(dgsmatrix&, dgsmatrix&)" << std::endl
              << "These two matrises can not make a product." << std::endl
              << "Your input was (" << matA.M << "x" << matA.N << ") * ("
              << matB.M << "x" << matB.N << ")." << std::endl;
    exit(1);
  }
#endif//CPPL_DEBUG
  
  dgsmatrix newmat( matA.M, matB.N, 0 );
  
  for(long c=0; c<matA.VOL; c++){
    long k(matA.Jndx[c]);
    std::vector< std::pair<long,long> >::iterator p;
    for(p=matB.Row[k].begin(); p!=matB.Row[k].end(); p++){
      newmat(matA.Indx[c],p->first) +=matA.Array[c]*matB.Array[p->second];
    }
  }
  
  return _(newmat);
}