[810] | 1 | /* -*- mode: C++; indent-tabs-mode: nil; -*- |
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| 2 | * |
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| 3 | * This file is a part of LEMON, a generic C++ optimization library. |
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| 4 | * |
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| 5 | * Copyright (C) 2003-2009 |
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| 6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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| 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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| 8 | * |
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| 9 | * Permission to use, modify and distribute this software is granted |
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| 10 | * provided that this copyright notice appears in all copies. For |
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| 11 | * precise terms see the accompanying LICENSE file. |
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| 12 | * |
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| 13 | * This software is provided "AS IS" with no warranty of any kind, |
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| 14 | * express or implied, and with no claim as to its suitability for any |
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| 15 | * purpose. |
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| 16 | * |
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| 17 | */ |
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| 18 | |
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| 19 | #include <iostream> |
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| 20 | #include <sstream> |
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| 21 | |
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| 22 | #include <lemon/smart_graph.h> |
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| 23 | #include <lemon/lgf_reader.h> |
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| 24 | #include <lemon/path.h> |
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| 25 | #include <lemon/concepts/digraph.h> |
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| 26 | #include <lemon/concept_check.h> |
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| 27 | |
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[812] | 28 | #include <lemon/karp.h> |
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[813] | 29 | #include <lemon/hartmann_orlin.h> |
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[812] | 30 | #include <lemon/howard.h> |
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| 31 | |
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[810] | 32 | #include "test_tools.h" |
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| 33 | |
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| 34 | using namespace lemon; |
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| 35 | |
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| 36 | char test_lgf[] = |
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| 37 | "@nodes\n" |
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| 38 | "label\n" |
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| 39 | "1\n" |
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| 40 | "2\n" |
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| 41 | "3\n" |
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| 42 | "4\n" |
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| 43 | "5\n" |
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| 44 | "6\n" |
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| 45 | "7\n" |
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| 46 | "@arcs\n" |
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| 47 | " len1 len2 len3 len4 c1 c2 c3 c4\n" |
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| 48 | "1 2 1 1 1 1 0 0 0 0\n" |
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| 49 | "2 4 5 5 5 5 1 0 0 0\n" |
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| 50 | "2 3 8 8 8 8 0 0 0 0\n" |
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| 51 | "3 2 -2 0 0 0 1 0 0 0\n" |
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| 52 | "3 4 4 4 4 4 0 0 0 0\n" |
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| 53 | "3 7 -4 -4 -4 -4 0 0 0 0\n" |
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| 54 | "4 1 2 2 2 2 0 0 0 0\n" |
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| 55 | "4 3 3 3 3 3 1 0 0 0\n" |
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| 56 | "4 4 3 3 0 0 0 0 1 0\n" |
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| 57 | "5 2 4 4 4 4 0 0 0 0\n" |
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| 58 | "5 6 3 3 3 3 0 1 0 0\n" |
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| 59 | "6 5 2 2 2 2 0 1 0 0\n" |
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| 60 | "6 4 -1 -1 -1 -1 0 0 0 0\n" |
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| 61 | "6 7 1 1 1 1 0 0 0 0\n" |
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| 62 | "7 7 4 4 4 -1 0 0 0 1\n"; |
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| 63 | |
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| 64 | |
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| 65 | // Check the interface of an MMC algorithm |
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| 66 | template <typename GR, typename Value> |
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| 67 | struct MmcClassConcept |
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| 68 | { |
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| 69 | template <typename MMC> |
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| 70 | struct Constraints { |
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| 71 | void constraints() { |
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| 72 | const Constraints& me = *this; |
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| 73 | |
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| 74 | typedef typename MMC |
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| 75 | ::template SetPath<ListPath<GR> > |
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| 76 | ::template SetLargeValue<Value> |
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| 77 | ::Create MmcAlg; |
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| 78 | MmcAlg mmc(me.g, me.length); |
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| 79 | const MmcAlg& const_mmc = mmc; |
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| 80 | |
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[816] | 81 | typename MmcAlg::Tolerance tol = const_mmc.tolerance(); |
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| 82 | mmc.tolerance(tol); |
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| 83 | |
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[810] | 84 | b = mmc.cycle(p).run(); |
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| 85 | b = mmc.findMinMean(); |
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| 86 | b = mmc.findCycle(); |
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| 87 | |
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| 88 | v = const_mmc.cycleLength(); |
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| 89 | i = const_mmc.cycleArcNum(); |
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| 90 | d = const_mmc.cycleMean(); |
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| 91 | p = const_mmc.cycle(); |
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| 92 | } |
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| 93 | |
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| 94 | typedef concepts::ReadMap<typename GR::Arc, Value> LM; |
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| 95 | |
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| 96 | GR g; |
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| 97 | LM length; |
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| 98 | ListPath<GR> p; |
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| 99 | Value v; |
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| 100 | int i; |
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| 101 | double d; |
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| 102 | bool b; |
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| 103 | }; |
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| 104 | }; |
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| 105 | |
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| 106 | // Perform a test with the given parameters |
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| 107 | template <typename MMC> |
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| 108 | void checkMmcAlg(const SmartDigraph& gr, |
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| 109 | const SmartDigraph::ArcMap<int>& lm, |
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| 110 | const SmartDigraph::ArcMap<int>& cm, |
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| 111 | int length, int size) { |
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| 112 | MMC alg(gr, lm); |
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| 113 | alg.findMinMean(); |
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| 114 | check(alg.cycleMean() == static_cast<double>(length) / size, |
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| 115 | "Wrong cycle mean"); |
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| 116 | alg.findCycle(); |
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| 117 | check(alg.cycleLength() == length && alg.cycleArcNum() == size, |
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| 118 | "Wrong path"); |
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| 119 | SmartDigraph::ArcMap<int> cycle(gr, 0); |
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| 120 | for (typename MMC::Path::ArcIt a(alg.cycle()); a != INVALID; ++a) { |
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| 121 | ++cycle[a]; |
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| 122 | } |
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| 123 | for (SmartDigraph::ArcIt a(gr); a != INVALID; ++a) { |
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| 124 | check(cm[a] == cycle[a], "Wrong path"); |
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| 125 | } |
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| 126 | } |
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| 127 | |
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| 128 | // Class for comparing types |
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| 129 | template <typename T1, typename T2> |
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| 130 | struct IsSameType { |
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| 131 | static const int result = 0; |
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| 132 | }; |
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| 133 | |
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| 134 | template <typename T> |
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| 135 | struct IsSameType<T,T> { |
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| 136 | static const int result = 1; |
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| 137 | }; |
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| 138 | |
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| 139 | |
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| 140 | int main() { |
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| 141 | #ifdef LEMON_HAVE_LONG_LONG |
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| 142 | typedef long long long_int; |
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| 143 | #else |
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| 144 | typedef long long_int; |
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| 145 | #endif |
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| 146 | |
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| 147 | // Check the interface |
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| 148 | { |
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| 149 | typedef concepts::Digraph GR; |
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[812] | 150 | |
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| 151 | // Karp |
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| 152 | checkConcept< MmcClassConcept<GR, int>, |
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| 153 | Karp<GR, concepts::ReadMap<GR::Arc, int> > >(); |
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| 154 | checkConcept< MmcClassConcept<GR, float>, |
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| 155 | Karp<GR, concepts::ReadMap<GR::Arc, float> > >(); |
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[810] | 156 | |
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[813] | 157 | // HartmannOrlin |
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| 158 | checkConcept< MmcClassConcept<GR, int>, |
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| 159 | HartmannOrlin<GR, concepts::ReadMap<GR::Arc, int> > >(); |
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| 160 | checkConcept< MmcClassConcept<GR, float>, |
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| 161 | HartmannOrlin<GR, concepts::ReadMap<GR::Arc, float> > >(); |
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| 162 | |
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[812] | 163 | // Howard |
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| 164 | checkConcept< MmcClassConcept<GR, int>, |
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| 165 | Howard<GR, concepts::ReadMap<GR::Arc, int> > >(); |
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| 166 | checkConcept< MmcClassConcept<GR, float>, |
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| 167 | Howard<GR, concepts::ReadMap<GR::Arc, float> > >(); |
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| 168 | |
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| 169 | if (IsSameType<Howard<GR, concepts::ReadMap<GR::Arc, int> >::LargeValue, |
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| 170 | long_int>::result == 0) check(false, "Wrong LargeValue type"); |
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| 171 | if (IsSameType<Howard<GR, concepts::ReadMap<GR::Arc, float> >::LargeValue, |
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| 172 | double>::result == 0) check(false, "Wrong LargeValue type"); |
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[810] | 173 | } |
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| 174 | |
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| 175 | // Run various tests |
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| 176 | { |
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| 177 | typedef SmartDigraph GR; |
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| 178 | DIGRAPH_TYPEDEFS(GR); |
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| 179 | |
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| 180 | GR gr; |
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| 181 | IntArcMap l1(gr), l2(gr), l3(gr), l4(gr); |
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| 182 | IntArcMap c1(gr), c2(gr), c3(gr), c4(gr); |
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| 183 | |
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| 184 | std::istringstream input(test_lgf); |
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| 185 | digraphReader(gr, input). |
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| 186 | arcMap("len1", l1). |
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| 187 | arcMap("len2", l2). |
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| 188 | arcMap("len3", l3). |
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| 189 | arcMap("len4", l4). |
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| 190 | arcMap("c1", c1). |
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| 191 | arcMap("c2", c2). |
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| 192 | arcMap("c3", c3). |
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| 193 | arcMap("c4", c4). |
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| 194 | run(); |
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| 195 | |
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[812] | 196 | // Karp |
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| 197 | checkMmcAlg<Karp<GR, IntArcMap> >(gr, l1, c1, 6, 3); |
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| 198 | checkMmcAlg<Karp<GR, IntArcMap> >(gr, l2, c2, 5, 2); |
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| 199 | checkMmcAlg<Karp<GR, IntArcMap> >(gr, l3, c3, 0, 1); |
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| 200 | checkMmcAlg<Karp<GR, IntArcMap> >(gr, l4, c4, -1, 1); |
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| 201 | |
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[813] | 202 | // HartmannOrlin |
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| 203 | checkMmcAlg<HartmannOrlin<GR, IntArcMap> >(gr, l1, c1, 6, 3); |
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| 204 | checkMmcAlg<HartmannOrlin<GR, IntArcMap> >(gr, l2, c2, 5, 2); |
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| 205 | checkMmcAlg<HartmannOrlin<GR, IntArcMap> >(gr, l3, c3, 0, 1); |
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| 206 | checkMmcAlg<HartmannOrlin<GR, IntArcMap> >(gr, l4, c4, -1, 1); |
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| 207 | |
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[812] | 208 | // Howard |
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[811] | 209 | checkMmcAlg<Howard<GR, IntArcMap> >(gr, l1, c1, 6, 3); |
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| 210 | checkMmcAlg<Howard<GR, IntArcMap> >(gr, l2, c2, 5, 2); |
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| 211 | checkMmcAlg<Howard<GR, IntArcMap> >(gr, l3, c3, 0, 1); |
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| 212 | checkMmcAlg<Howard<GR, IntArcMap> >(gr, l4, c4, -1, 1); |
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[810] | 213 | } |
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| 214 | |
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| 215 | return 0; |
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| 216 | } |
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