mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-27 19:05:51 +00:00
Code Activity

mv util/lp to math/lp

Browse source 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-06-03 16:46:19 -07:00
parent b6513b8e2d
commit 33cbd29ed0
150 changed files with 524 additions and 479 deletions
Download patch file Download diff file Expand all files Collapse all files

58
src/math/lp/conversion_helper.h Normal file
View file

@ -0,0 +1,58 @@
/*++
Copyright (c) 2017 Microsoft Corporation
Module Name:
<name>
Abstract:
<abstract>
Author:
Lev Nachmanson (levnach)
Revision History:
--*/
#pragma once
namespace lp {
template <typename V>
struct conversion_helper {
static V get_lower_bound(const column_info<mpq> & ci) {
return V(ci.get_lower_bound(), ci.lower_bound_is_strict()? 1 : 0);
}
static V get_upper_bound(const column_info<mpq> & ci) {
return V(ci.get_upper_bound(), ci.upper_bound_is_strict()? -1 : 0);
}
};
template<>
struct conversion_helper <double> {
static double get_upper_bound(const column_info<mpq> & ci) {
if (!ci.upper_bound_is_strict())
return ci.get_upper_bound().get_double();
double eps = 0.00001;
if (!ci.lower_bound_is_set())
return ci.get_upper_bound().get_double() - eps;
eps = std::min((ci.get_upper_bound() - ci.get_lower_bound()).get_double() / 1000, eps);
return ci.get_upper_bound().get_double() - eps;
}
static double get_lower_bound(const column_info<mpq> & ci) {
if (!ci.lower_bound_is_strict())
return ci.get_lower_bound().get_double();
double eps = 0.00001;
if (!ci.upper_bound_is_set())
return ci.get_lower_bound().get_double() + eps;
eps = std::min((ci.get_upper_bound() - ci.get_lower_bound()).get_double() / 1000, eps);
return ci.get_lower_bound().get_double() + eps;
}
};
}