ShallowMatrix.h

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// This file is part of the Peano project. For conditions of distribution and
// use, please see the copyright notice at www.peano-framework.org
#pragma once
 
 
namespace tarch {
  namespace la {
    template<int Rows, int Cols, typename Scalar>
    class ShallowMatrix;
  }
}
 
 
#include "tarch/la/ShallowMatrixVectorOperations.h"
 
#include "tarch/compiler/CompilerSpecificSettings.h"
 
#include <string>
 
 
 
template<int Rows, int Cols, typename Scalar>
class tarch::la::ShallowMatrix {
  private:
    Scalar* _values;
 
  public:
    ShallowMatrix(Scalar* values);
 
    ShallowMatrix(const ShallowMatrix& copy);
 
    ShallowMatrix& operator=(const ShallowMatrix& copy);
 
    int rows() const;
 
    int cols() const;
 
    int size() const;
 
    inline Scalar & operator() (
      int rowIndex,
      int colIndex
    )
      #ifdef UseManualInlining
      __attribute__((always_inline))
      #endif
      {
        assertion5( rowIndex >= 0, Rows, Cols, rowIndex, colIndex, toString() );
        assertion5( colIndex >= 0, Rows, Cols, rowIndex, colIndex, toString() );
        assertion5( rowIndex < Rows, Rows, Cols, rowIndex, colIndex, toString() );
        assertion5( colIndex < Cols, Rows, Cols, rowIndex, colIndex, toString() );
        return _values[rowIndex * Cols + colIndex];
      }
 
    inline const Scalar & operator() (
      int rowIndex,
      int colIndex
    ) const
      #ifdef UseManualInlining
      __attribute__((always_inline))
      #endif
      {
        assertion5( rowIndex >= 0, Rows, Cols, rowIndex, colIndex, toString() );
        assertion5( colIndex >= 0, Rows, Cols, rowIndex, colIndex, toString() );
        assertion5( rowIndex < Rows, Rows, Cols, rowIndex, colIndex, toString() );
        assertion5( colIndex < Cols, Rows, Cols, rowIndex, colIndex, toString() );
        return _values[rowIndex * Cols + colIndex];
      }
 
    std::string toString() const;
 
    std::string toPrettyString(int numberOfDigits=4) const;
 
    template <typename NewScalarType>
    tarch::la::Matrix<Rows,Cols,NewScalarType> convertScalar() const;
 
    Scalar* data() {
      return _values;
    }
 
    const Scalar *  data() const {
      return _values;
    }
};
 
 
 
#include "tarch/la/ShallowMatrix.cpph"