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toward fetching existing terms intervals from lar_solver

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-08-05 12:04:27 -07:00
parent 3c5b1086a1
commit dfe0e85629
7 changed files with 199 additions and 42 deletions
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9
src/math/lp/horner.h
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@ -31,6 +31,7 @@ class horner : common {
intervals m_intervals;
public:
typedef nla_expr<rational> nex;
typedef intervals::interval interv;
horner(core *core);
void horner_lemmas();
@ -42,6 +43,7 @@ public:
nex nexvar(lpvar j) const;
intervals::interval interval_of_sum(const nex&);
intervals::interval interval_of_sum_no_terms(const nex&);
intervals::interval interval_of_mul(const nex&);
void set_interval_for_scalar(intervals::interval&, const rational&);
void set_var_interval(lpvar j, intervals::interval&);
@ -49,6 +51,11 @@ public:
template <typename T> // T has an iterator of (coeff(), var())
bool row_has_monomial_to_refine(const T&) const;
bool find_term_expr(rational& a, const lp::lar_term * & t, rational& b) const;
bool find_term_expr(const nex& e, rational& a, const lp::lar_term * & t, rational& b) const;
static lp::lar_term expression_to_canonical_form(nex&, rational& a, rational & b);
static void add_linear_to_vector(const nex&, vector<std::pair<rational, lpvar>> &);
static void add_mul_to_vector(const nex&, vector<std::pair<rational, lpvar>> &);
bool is_tighter(const interv&, const interv&) const;
bool interval_from_term(const nex& e, interv&) const;
}; // end of horner
}