Stores one entry of a sparse graph. More...

#include <Teuchos_MatrixMarket_Raw_Graph_Adder.hpp>

Public Member Functions
	GraphElement ()
	Default constructor: an invalid entry of the graph. More...

	GraphElement (const Ordinal i, const Ordinal j)
	Create a sparse graph entry at (i,j). More...

bool	operator== (const GraphElement &rhs)
	Compare row and column indices. More...

bool	operator!= (const GraphElement &rhs)
	Compare row and column indices. More...

bool	operator< (const GraphElement &rhs) const
	Lexicographic order first by row index, then by column index. More...

Ordinal	rowIndex () const
	Row index (zero-based) of this GraphElement. More...

Ordinal	colIndex () const
	Column index (zero-based) of this GraphElement. More...

Private Attributes
Ordinal	rowIndex_

Ordinal	colIndex_

Detailed Description

template<class Ordinal>
class Teuchos::MatrixMarket::Raw::GraphElement< Ordinal >

Stores one entry of a sparse graph.

Author: Alicia Klinvex

Template Parameters

Ordinal The type of indices of the sparse graph.

This class is mainly useful as an implementation detail of GraphAdder. We expose it to users only if they wish to convert the sparse graph read in by GraphAdder into a storage format other than CSR (compressed sparse row).

An array of Elements implements the so-called "array of structs" representation of a coordinate format sparse graph. A GraphElement has a row and column index (each of type Ordinal). Elements also have equality and ordering comparisons. The equality comparison only tests the row and column index, and is intended to simplify merging matrix entries with the same row and column indices. The ordering comparison means that std::sort of a sequence of Elements will put them in an order suitable for extracting the CSR (compressed sparse row) representation of the sparse graph.

Definition at line 86 of file Teuchos_MatrixMarket_Raw_Graph_Adder.hpp.