DynamicFrobeniusAction.cpp

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/* Frobby: Software for monomial ideal computations.
   Copyright (C) 2007 Bjarke Hammersholt Roune (www.broune.com)
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
 
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see http://www.gnu.org/licenses/.
*/
#include "stdinc.h"
#include "DynamicFrobeniusAction.h"
 
#include "IOFacade.h"
#include "DynamicFrobeniusFacade.h"
#include "Scanner.h"
 
DynamicFrobeniusAction::DynamicFrobeniusAction():
  Action
(staticGetName(),
 "Compute Frobenius number using dynamic programming.",
 "Compute the Frobenius number of the input Frobenius instance using a "
 "simple\n"
 "and quite slow dynamic programming algorithm. This functionality has "
 "mainly\n"
 "been implemented to check the answers of the Grobner basis-based Frobenius\n"
 "solver.",
 false) {
}
 
void DynamicFrobeniusAction::obtainParameters(vector<Parameter*>& parameters) {
  Action::obtainParameters(parameters);
}
 
void DynamicFrobeniusAction::perform() {
  vector<mpz_class> instance;
 
  IOFacade ioFacade(_printActions);
  Scanner in("", stdin);
  ioFacade.readFrobeniusInstance(in, instance);
  in.expectEOF();
 
  mpz_class frobeniusNumber;
 
  DynamicFrobeniusFacade frobeniusFacade(_printActions);
  frobeniusFacade.computeFrobeniusNumber(instance, frobeniusNumber);
 
  gmp_fprintf(stdout, "%Zd\n", frobeniusNumber.get_mpz_t());
}
 
const char* DynamicFrobeniusAction::staticGetName() {
  return "frobdyn";
}