r397:62f9787c516c
Mon, 01 Dec 2008 14:33:42
[Not Reviewed]
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#include <lemon/path.h> |
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namespace lemon {
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/// \brief Default operation traits for the Dijkstra algorithm class. |
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/// |
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/// This operation traits class defines all computational operations and |
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/// constants which are used in the Dijkstra algorithm. |
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template <typename Value> |
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struct DijkstraDefaultOperationTraits {
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/// \brief Gives back the zero value of the type. |
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static Value zero() {
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return static_cast<Value>(0); |
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} |
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/// \brief Gives back the sum of the given two elements. |
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static Value plus(const Value& left, const Value& right) {
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return left + right; |
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} |
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/// \brief Gives back true only if the first value is less than the second. |
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static bool less(const Value& left, const Value& right) {
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return left < right; |
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} |
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}; |
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/// \brief Widest path operation traits for the Dijkstra algorithm class. |
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/// |
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/// This operation traits class defines all computational operations and |
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/// constants which are used in the Dijkstra algorithm for widest path |
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/// computation. |
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/// |
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/// \see DijkstraDefaultOperationTraits |
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template <typename Value> |
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struct DijkstraWidestPathOperationTraits {
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/// \brief Gives back the maximum value of the type. |
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static Value zero() {
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return std::numeric_limits<Value>::max(); |
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} |
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/// \brief Gives back the minimum of the given two elements. |
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static Value plus(const Value& left, const Value& right) {
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return std::min(left, right); |
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} |
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/// \brief Gives back true only if the first value is less than the second. |
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static bool less(const Value& left, const Value& right) {
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return left < right; |
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} |
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}; |
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///Default traits class of Dijkstra class. |
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///Default traits class of Dijkstra class. |
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///\tparam GR The type of the digraph. |
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///\tparam LM The type of the length map. |
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template<class GR, class LM> |
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struct DijkstraDefaultTraits |
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{
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///The type of the digraph the algorithm runs on. |
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typedef GR Digraph; |
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///The type of the map that stores the arc lengths. |
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///The type of the map that stores the arc lengths. |
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///It must meet the \ref concepts::ReadMap "ReadMap" concept. |
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typedef LM LengthMap; |
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///The type of the length of the arcs. |
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typedef typename LM::Value Value; |
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/// Operation traits for Dijkstra algorithm. |
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/// This class defines the operations that are used in the algorithm. |
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/// \see DijkstraDefaultOperationTraits |
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typedef DijkstraDefaultOperationTraits<Value> OperationTraits; |
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@@ -68,49 +68,49 @@ |
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DType::PredMap p(G); |
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LengthMap length; |
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Path<Digraph> pp; |
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{
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DType dijkstra_test(G,length); |
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dijkstra_test.run(s); |
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dijkstra_test.run(s,t); |
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l = dijkstra_test.dist(t); |
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e = dijkstra_test.predArc(t); |
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s = dijkstra_test.predNode(t); |
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b = dijkstra_test.reached(t); |
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d = dijkstra_test.distMap(); |
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p = dijkstra_test.predMap(); |
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pp = dijkstra_test.path(t); |
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} |
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{
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DType |
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::SetPredMap<concepts::ReadWriteMap<Node,Arc> > |
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::SetDistMap<concepts::ReadWriteMap<Node,VType> > |
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::SetProcessedMap<concepts::WriteMap<Node,bool> > |
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::SetStandardProcessedMap |
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::SetOperationTraits< |
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::SetOperationTraits<DijkstraDefaultOperationTraits<VType> > |
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::SetHeap<BinHeap<VType, concepts::ReadWriteMap<Node,int> > > |
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::SetStandardHeap<BinHeap<VType, concepts::ReadWriteMap<Node,int> > > |
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::Create dijkstra_test(G,length); |
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dijkstra_test.run(s); |
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dijkstra_test.run(s,t); |
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l = dijkstra_test.dist(t); |
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e = dijkstra_test.predArc(t); |
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s = dijkstra_test.predNode(t); |
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b = dijkstra_test.reached(t); |
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pp = dijkstra_test.path(t); |
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} |
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} |
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void checkDijkstraFunctionCompile() |
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{
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typedef int VType; |
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typedef concepts::Digraph Digraph; |
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typedef Digraph::Arc Arc; |
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typedef Digraph::Node Node; |
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typedef concepts::ReadMap<Digraph::Arc,VType> LengthMap; |
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