Frobby  0.9.0
UniHashPolynomial.h
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1 /* Frobby: Software for monomial ideal computations.
2  Copyright (C) 2009 University of Aarhus
3  Contact Bjarke Hammersholt Roune for license information (www.broune.com)
4 
5  This program is free software; you can redistribute it and/or modify
6  it under the terms of the GNU General Public License as published by
7  the Free Software Foundation; either version 2 of the License, or
8  (at your option) any later version.
9 
10  This program is distributed in the hope that it will be useful,
11  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  GNU General Public License for more details.
14 
15  You should have received a copy of the GNU General Public License
16  along with this program. If not, see http://www.gnu.org/licenses/.
17 */
18 #ifndef UNI_HASH_POLYNOMIAL_GUARD
19 #define UNI_HASH_POLYNOMIAL_GUARD
20 
21 #include "HashMap.h"
22 
24 
28 template<>
29 class FrobbyHash<mpz_class> {
30  public:
31  size_t operator()(const mpz_class& i) const {
32  // The constant is a prime. This method needs to be improved.
33  return mpz_fdiv_ui(i.get_mpz_t(), 2106945901u);
34  }
35 };
36 
42  public:
45  void add(bool plus, const mpz_class& exponent);
46 
48  void add(int coef, size_t exponent);
49 
51  void add(const mpz_class& coef, const mpz_class& exponent);
52 
53  void feedTo(CoefBigTermConsumer& consumer, bool inCanonicalOrder = false) const;
54 
55  size_t getTermCount() const;
56 
57  private:
60 };
61 
62 #endif
HashMap< mpz_class, mpz_class >
CoefBigTermConsumer
Definition: CoefBigTermConsumer.h:29
UniHashPolynomial::getTermCount
size_t getTermCount() const
Definition: UniHashPolynomial.cpp:110
UniHashPolynomial::TermMap
HashMap< mpz_class, mpz_class > TermMap
Definition: UniHashPolynomial.h:58
UniHashPolynomial
A sparse univariate polynomial represented by a hash table mapping terms to coefficients.
Definition: UniHashPolynomial.h:41
FrobbyHash
Definition: HashMap.h:35
HashMap.h
UniHashPolynomial::feedTo
void feedTo(CoefBigTermConsumer &consumer, bool inCanonicalOrder=false) const
Definition: UniHashPolynomial.cpp:64
FrobbyHash< mpz_class >::operator()
size_t operator()(const mpz_class &i) const
Definition: UniHashPolynomial.h:31
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
UniHashPolynomial::_terms
TermMap _terms
Definition: UniHashPolynomial.h:59