mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-29 20:05:51 +00:00
Code Activity

merge LRA

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

82
src/util/lp/column_namer.h Normal file
View file

@ -0,0 +1,82 @@
#pragma once
/*
Copyright (c) 2017 Microsoft Corporation
Author: Lev Nachmanson
*/
#include <string>
#include "util/lp/linear_combination_iterator.h"
namespace lean {
class column_namer {
public:
virtual std::string get_column_name(unsigned j) const = 0;
template <typename T>
void print_linear_iterator(linear_combination_iterator<T>* it, std::ostream & out) const {
vector<std::pair<T, unsigned>> coeff;
T a;
unsigned i;
while (it->next(a, i)) {
coeff.emplace_back(a, i);
}
print_linear_combination_of_column_indices(coeff, out);
}
template <typename T>
void print_linear_iterator_indices_only(linear_combination_iterator<T>* it, std::ostream & out) const {
vector<std::pair<T, unsigned>> coeff;
T a;
unsigned i;
while (it->next(a, i)) {
coeff.emplace_back(a, i);
}
print_linear_combination_of_column_indices_only(coeff, out);
}
template <typename T>
void print_linear_combination_of_column_indices_only(const vector<std::pair<T, unsigned>> & coeffs, std::ostream & out) const {
bool first = true;
for (const auto & it : coeffs) {
auto val = it.first;
if (first) {
first = false;
} else {
if (numeric_traits<T>::is_pos(val)) {
out << " + ";
} else {
out << " - ";
val = -val;
}
}
if (val == -numeric_traits<T>::one())
out << " - ";
else if (val != numeric_traits<T>::one())
out << T_to_string(val);
out << "_" << it.second;
}
}
template <typename T>
void print_linear_combination_of_column_indices(const vector<std::pair<T, unsigned>> & coeffs, std::ostream & out) const {
bool first = true;
for (const auto & it : coeffs) {
auto val = it.first;
if (first) {
first = false;
} else {
if (numeric_traits<T>::is_pos(val)) {
out << " + ";
} else {
out << " - ";
val = -val;
}
}
if (val == -numeric_traits<T>::one())
out << " - ";
else if (val != numeric_traits<T>::one())
out << val;
out << get_column_name(it.second);
}
}
};
}