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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | // -*- c++ -*-
//*****************************************************************************
/** @file BoundedDivisorsOf.h
*
* @author Michael Brickenstein (original) and Alexander Dreyer (refactored)
* @date 2012-01-28
*
* This file includes the definition of the class @c BoundedDivisorsOf.
*
* @par Copyright:
* (c) 2006-2012 by The PolyBoRi Team
*
**/
//*****************************************************************************
#ifndef polybori_groebner_BoundedDivisorsOf_h_
#define polybori_groebner_BoundedDivisorsOf_h_
#include "fixed_path_divisors.h"
// include basic definitions
#include "groebner_defs.h"
#include <functional>
BEGIN_NAMESPACE_PBORIGB
/** @class BoundedDivisorsOf
* @brief This class defines defines a function for computing a bounded
* variant of @c MononmialSet's @c divisorsOf
*
This implements the mapping
f: terms -> subsets of T (a set of terms), with
t :> {y in T : t divides y, y divides t*t0}
where t0 and T are a term and a set of terms, respectively,
given as constructor arguments.
* @note The operator stored references of t0 and T only.
**/
class BoundedDivisorsOf:
public std::unary_function<Monomial, MonomialSet> {
public:
/// Initialize mapping with given parameters
BoundedDivisorsOf(const Monomial& term, const MonomialSet& terms):
m_factor(term), m_terms(terms) {}
/// The actual call
MonomialSet operator()(const Monomial& t_divided) const {
Monomial t = t_divided * m_factor;
return fixed_path_divisors(m_terms, t, t_divided);
}
private:
Monomial m_factor;
MonomialSet m_terms;
};
END_NAMESPACE_PBORIGB
#endif /* polybori_groebner_BoundedDivisorsOf_h_ */
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