1 /* Frobby: Software for monomial ideal computations.
2 Copyright (C) 2007 Bjarke Hammersholt Roune (www.broune.com)
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see http://www.gnu.org/licenses/.
16 */
17 #include "stdinc.h"
18 #include "MaximalStandardAction.h"
19
20 #include "SliceFacade.h"
21 #include "SliceParams.h"
22 #include "DataType.h"
23
MaximalStandardAction()24 MaximalStandardAction::MaximalStandardAction():
25 Action
26 (staticGetName(),
27 "Compute the maximal standard monomials of the input ideal.",
28 "Compute the maximal standard monomials of the input ideal. A standard "
29 "monomial\nis a monomial that does not lie in the ideal, while a "
30 "maximal\nstandard monomial m is a standard monomial such that m * v does "
31 "lie in the\nideal for every variable v in the ambient polynomial ring of I.",
32 false),
33
34 _io(DataType::getMonomialIdealType(), DataType::getMonomialIdealType()),
35
36 _increment
37 ("increment",
38 "Increase each entry of the output by 1 to compute maximal staircase\n"
39 "monomials in place of maximal standard monomials.",
40 false) {
41 }
42
staticGetName()43 const char* MaximalStandardAction::staticGetName() {
44 return "maxstandard";
45 }
46
obtainParameters(vector<Parameter * > & parameters)47 void MaximalStandardAction::obtainParameters(vector<Parameter*>& parameters) {
48 _io.obtainParameters(parameters);
49 _sliceParams.obtainParameters(parameters);
50 parameters.push_back(&_increment);
51 Action::obtainParameters(parameters);
52 }
53
perform()54 void MaximalStandardAction::perform() {
55 SliceParams params(_params);
56 validateSplit(params, true, false);
57 SliceFacade facade(params, DataType::getMonomialIdealListType());
58 if (_increment)
59 facade.computeMaximalStaircaseMonomials();
60 else
61 facade.computeMaximalStandardMonomials();
62 }
63