72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
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/*
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* ezSAT -- A simple and easy to use CNF generator for SAT solvers
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*
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* Copyright (C) 2013 Clifford Wolf <clifford@clifford.at>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#include "ezminisat.h"
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#include <stdio.h>
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void print_results(bool satisfiable, const std::vector<bool> &modelValues)
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{
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if (!satisfiable) {
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printf("not satisfiable.\n\n");
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} else {
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printf("satisfiable:");
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for (auto val : modelValues)
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printf(" %d", val ? 1 : 0);
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printf("\n\n");
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}
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}
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int main()
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{
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ezMiniSAT sat;
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// 3 input AOI-Gate
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// 'pos_active' encodes the condition under which the pullup path of the gate is active
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// 'neg_active' encodes the condition under which the pulldown path of the gate is active
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// 'impossible' encodes the condition that both or none of the above paths is active
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int pos_active = sat.AND(sat.NOT("A"), sat.OR(sat.NOT("B"), sat.NOT("C")));
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int neg_active = sat.OR("A", sat.AND("B", "C"));
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int impossible = sat.IFF(pos_active, neg_active);
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std::vector<int> modelVars;
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std::vector<bool> modelValues;
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bool satisfiable;
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modelVars.push_back(sat.VAR("A"));
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modelVars.push_back(sat.VAR("B"));
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modelVars.push_back(sat.VAR("C"));
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printf("\n");
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printf("pos_active: %s\n", sat.to_string(pos_active).c_str());
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satisfiable = sat.solve(modelVars, modelValues, pos_active);
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print_results(satisfiable, modelValues);
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printf("neg_active: %s\n", sat.to_string(neg_active).c_str());
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satisfiable = sat.solve(modelVars, modelValues, neg_active);
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print_results(satisfiable, modelValues);
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printf("impossible: %s\n", sat.to_string(impossible).c_str());
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satisfiable = sat.solve(modelVars, modelValues, impossible);
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print_results(satisfiable, modelValues);
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return 0;
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}
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