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51 lines
1.2 KiB
51 lines
1.2 KiB
/*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdexcept>
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#include <onerow/gomory_cut_generator.hpp>
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GomoryCutGenerator::GomoryCutGenerator(Row &r) :
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SingleRowCutGenerator(r), finished(false)
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{
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}
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GomoryCutGenerator::~GomoryCutGenerator()
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{
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}
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bool GomoryCutGenerator::has_next()
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{
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return !finished;
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}
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Constraint* GomoryCutGenerator::next()
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{
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if (!has_next())
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throw std::out_of_range("");
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Constraint *cut = new Constraint;
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int nz = row.c.pi.nz();
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cut->pi_zero = row.c.pi_zero.floor();
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cut->pi.resize(row.c.pi.size());
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for (int i = 0; i < nz; i++)
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cut->pi.push(row.c.pi.index(i), row.c.pi.value(i).floor());
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finished = true;
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return cut;
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}
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