Nektar::UpperTriangularMatrixFuncs Struct Reference

#include <MatrixFuncs.h>

Inheritance diagram for Nektar::UpperTriangularMatrixFuncs:

Collaboration diagram for Nektar::UpperTriangularMatrixFuncs:

Static Public Member Functions
static unsigned int	CalculateIndex (unsigned int curRow, unsigned int curColumn)
static boost::tuples::tuple< unsigned int, unsigned int >	Advance (const unsigned int totalRows, const unsigned int totalColumns, const unsigned int curRow, const unsigned int curColumn)
Static Public Member Functions inherited from Nektar::TriangularMatrixFuncs
static unsigned int	GetRequiredStorageSize (unsigned int rows, unsigned int columns)

Detailed Description

Definition at line 175 of file MatrixFuncs.h.

Member Function Documentation

boost::tuples::tuple< unsigned int, unsigned int > Nektar::UpperTriangularMatrixFuncs::Advance ( const unsigned int  totalRows, const unsigned int  totalColumns, const unsigned int  curRow, const unsigned int  curColumn  )

static

Definition at line 179 of file MatrixFuncs.cpp.

References ASSERTL1.

Referenced by Nektar::LowerTriangularMatrixFuncs::Advance(), and Nektar::NekMatrix< DataType, StandardMatrixTag >::Advance().

    {
        ASSERTL1(totalRows == totalColumns, "Triangular matrices must be square.");
        ASSERTL1(curRow < totalRows, "Attemping to iterate through an element on row " +
            boost::lexical_cast<std::string>(curRow) + " of a (" +
            boost::lexical_cast<std::string>(totalRows) + ", " +
            boost::lexical_cast<std::string>(totalColumns) + " upper triangular matrix.");
        ASSERTL1(curColumn < totalColumns, "Attemping to iterate through an element on row " +
            boost::lexical_cast<std::string>(curColumn) + " of a (" +
            boost::lexical_cast<std::string>(totalRows) + ", " +
            boost::lexical_cast<std::string>(totalColumns) + " upper triangular matrix.");
        ASSERTL1(curRow <= curColumn, "Attemping to iterate through element (" +
            boost::lexical_cast<std::string>(curRow) + ", " +
            boost::lexical_cast<std::string>(curColumn) + ") of a (" +
            boost::lexical_cast<std::string>(totalRows) + ", " +
            boost::lexical_cast<std::string>(totalColumns) + " upper triangular matrix.");

        unsigned int nextRow = curRow;
        unsigned int nextColumn = curColumn;

        if( nextRow <= nextColumn )
        {
            ++nextRow;
        }

        if( nextRow > nextColumn )
        {
            ++nextColumn;
            nextRow = 0;
        }
        
        if( nextColumn >= totalColumns )
        {
            nextRow = std::numeric_limits<unsigned int>::max();
            nextColumn = std::numeric_limits<unsigned int>::max();
        }

        return boost::tuples::tuple<unsigned int, unsigned int>(nextRow, nextColumn);
    }

unsigned int Nektar::UpperTriangularMatrixFuncs::CalculateIndex ( unsigned int  curRow, unsigned int  curColumn  )

static

Definition at line 166 of file MatrixFuncs.cpp.

Referenced by Nektar::ConstMatrix< DataType >::CalculateIndex().

    {
        if( curRow <= curColumn )
        {
            return curRow + curColumn*(curColumn+1)/2;
        }
        else
        {
            return std::numeric_limits<unsigned int>::max();
        }
    }