Frobby  0.9.0
TotalDegreeCoefTermConsumer.cpp
Go to the documentation of this file.
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"
19 
20 #include "CoefBigTermConsumer.h"
21 #include "TermTranslator.h"
22 #include "Term.h"
23 
25 TotalDegreeCoefTermConsumer(auto_ptr<CoefBigTermConsumer> consumer,
26  const TermTranslator& translator):
27  _consumer(*consumer),
28  _consumerOwner(consumer),
29  _translator(translator) {
30  ASSERT(_consumerOwner.get() != 0);
31 }
32 
35  const TermTranslator& translator):
36  _consumer(consumer),
37  _translator(translator) {
38 }
39 
41  // Do nothing since taking the total degree discards the original
42  // ring.
43 }
44 
46 }
47 
48 void TotalDegreeCoefTermConsumer::consume(const mpz_class& coef,
49  const Term& term) {
51  if (coef == 0)
52  return;
53 
54  // Compute total degree using _tmp.
55  _tmp = 0;
56  for (size_t var = 0; var < term.getVarCount(); ++var)
57  _tmp += _translator.getExponent(var, term);
58 
59  _poly.add(coef, _tmp);
60 }
61 
63  _poly.feedTo(_consumer, true);
64 }
CoefBigTermConsumer
Definition: CoefBigTermConsumer.h:29
stdinc.h
TotalDegreeCoefTermConsumer::beginConsuming
virtual void beginConsuming()
Definition: TotalDegreeCoefTermConsumer.cpp:45
TotalDegreeCoefTermConsumer::doneConsuming
virtual void doneConsuming()
Definition: TotalDegreeCoefTermConsumer.cpp:62
Term::getVarCount
size_t getVarCount() const
Definition: Term.h:85
Term.h
TermTranslator
TermTranslator handles translation between terms whose exponents are infinite precision integers and ...
Definition: TermTranslator.h:41
TotalDegreeCoefTermConsumer.h
TermTranslator::getExponent
const mpz_class & getExponent(size_t variable, Exponent exponent) const
This method translates from IDs to arbitrary precision integers.
Definition: TermTranslator.cpp:392
TotalDegreeCoefTermConsumer::_poly
UniHashPolynomial _poly
Definition: TotalDegreeCoefTermConsumer.h:54
TermTranslator::getVarCount
size_t getVarCount() const
Definition: TermTranslator.cpp:447
TotalDegreeCoefTermConsumer::_consumerOwner
auto_ptr< CoefBigTermConsumer > _consumerOwner
Definition: TotalDegreeCoefTermConsumer.h:50
TotalDegreeCoefTermConsumer::_tmp
mpz_class _tmp
Definition: TotalDegreeCoefTermConsumer.h:52
TotalDegreeCoefTermConsumer::_consumer
CoefBigTermConsumer & _consumer
Definition: TotalDegreeCoefTermConsumer.h:49
Term
Term represents a product of variables which does not include a coefficient.
Definition: Term.h:49
TotalDegreeCoefTermConsumer::consumeRing
virtual void consumeRing(const VarNames &names)
Definition: TotalDegreeCoefTermConsumer.cpp:40
TotalDegreeCoefTermConsumer::_translator
const TermTranslator & _translator
Definition: TotalDegreeCoefTermConsumer.h:51
UniHashPolynomial::feedTo
void feedTo(CoefBigTermConsumer &consumer, bool inCanonicalOrder=false) const
Definition: UniHashPolynomial.cpp:64
TotalDegreeCoefTermConsumer::TotalDegreeCoefTermConsumer
TotalDegreeCoefTermConsumer(auto_ptr< CoefBigTermConsumer > consumer, const TermTranslator &translator)
Definition: TotalDegreeCoefTermConsumer.cpp:25
TotalDegreeCoefTermConsumer::consume
virtual void consume(const mpz_class &coef, const Term &term)
Definition: TotalDegreeCoefTermConsumer.cpp:48
UniHashPolynomial::add
void add(bool plus, const mpz_class &exponent)
Add +t^exponent or -t^exponent to the polynomial depending on whether plus is true or false,...
Definition: UniHashPolynomial.cpp:25
TermTranslator.h
CoefBigTermConsumer.h
VarNames
Defines the variables of a polynomial ring and facilities IO involving them.
Definition: VarNames.h:40
ASSERT
#define ASSERT(X)
Definition: stdinc.h:85