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merge LRA

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-05-09 10:46:11 -07:00
parent 085d31dca2
commit 911b24784a
120 changed files with 23069 additions and 15 deletions
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src/util/lp/lar_constraints.h Normal file
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/*
Copyright (c) 2017 Microsoft Corporation
Author: Lev Nachmanson
*/
#pragma once
#include "util/vector.h"
#include <utility>
#include <unordered_map>
#include <string>
#include <algorithm>
#include "util/lp/lp_utils.h"
#include "util/lp/ul_pair.h"
#include "util/lp/lar_term.h"
namespace lean {
inline lconstraint_kind flip_kind(lconstraint_kind t) {
return static_cast<lconstraint_kind>( - static_cast<int>(t));
}
inline std::string lconstraint_kind_string(lconstraint_kind t) {
switch (t) {
case LE: return std::string("<=");
case LT: return std::string("<");
case GE: return std::string(">=");
case GT: return std::string(">");
case EQ: return std::string("=");
}
lean_unreachable();
return std::string(); // it is unreachable
}
class lar_base_constraint {
public:
lconstraint_kind m_kind;
mpq m_right_side;
virtual vector<std::pair<mpq, var_index>> get_left_side_coefficients() const = 0;
lar_base_constraint() {}
lar_base_constraint(lconstraint_kind kind, const mpq& right_side) :m_kind(kind), m_right_side(right_side) {}
virtual unsigned size() const = 0;
virtual ~lar_base_constraint(){}
virtual mpq get_free_coeff_of_left_side() const { return zero_of_type<mpq>();}
};
struct lar_var_constraint: public lar_base_constraint {
unsigned m_j;
vector<std::pair<mpq, var_index>> get_left_side_coefficients() const {
vector<std::pair<mpq, var_index>> ret;
ret.push_back(std::make_pair(one_of_type<mpq>(), m_j));
return ret;
}
unsigned size() const { return 1;}
lar_var_constraint(unsigned j, lconstraint_kind kind, const mpq& right_side) : lar_base_constraint(kind, right_side), m_j(j) { }
};
struct lar_term_constraint: public lar_base_constraint {
const lar_term * m_term;
vector<std::pair<mpq, var_index>> get_left_side_coefficients() const {
return m_term->coeffs_as_vector();
}
unsigned size() const { return m_term->size();}
lar_term_constraint(const lar_term *t, lconstraint_kind kind, const mpq& right_side) : lar_base_constraint(kind, right_side), m_term(t) { }
virtual mpq get_free_coeff_of_left_side() const { return m_term->m_v;}
};
class lar_constraint : public lar_base_constraint {
public:
vector<std::pair<mpq, var_index>> m_coeffs;
lar_constraint() {}
lar_constraint(const vector<std::pair<mpq, var_index>> & left_side, lconstraint_kind kind, const mpq & right_side)
: lar_base_constraint(kind, right_side), m_coeffs(left_side) {}
lar_constraint(const lar_base_constraint & c) {
lean_assert(false); // should not be called : todo!
}
unsigned size() const {
return static_cast<unsigned>(m_coeffs.size());
}
vector<std::pair<mpq, var_index>> get_left_side_coefficients() const { return m_coeffs; }
};
}