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fixes for mixed case

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2020-01-16 15:15:07 -08:00
parent 9c8d5ddffb
commit fd1e0e4d80
5 changed files with 280 additions and 180 deletions
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41
src/math/lp/nla_tangent_lemmas.h
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@ -35,6 +35,11 @@ struct point {
y *= a;
return *this;
}
inline point& operator/=(rational a) {
x /= a;
y /= a;
return *this;
}
inline point operator+(const point& b) const {
return point(x + b.x, y + b.y);
}
@ -47,37 +52,9 @@ struct point {
inline std::ostream& operator<<(std::ostream& out, point const& a) { return out << "(" << a.x << ", " << a.y << ")"; }
class tangents : common {
public:
struct tangents : common {
tangents(core *core);
void tangent_lemma();
private:
lpvar find_binomial_to_refine();
void generate_explanations_of_tang_lemma(const monic& m, const factorization& bf, lp::explanation& exp);
void generate_simple_tangent_lemma(const monic& m, const factorization&);
void tangent_lemma_bf(const monic& m,const factorization& bf);
void generate_tang_plane(const rational & a, const rational& b, const factor& x, const factor& y, bool below, lpvar j);
void generate_two_tang_lines(const factorization & bf, const point& xy, lpvar j);
// Get two planes tangent to surface z = xy, one at point a, and another at point b.
// One can show that these planes still create a cut.
void get_initial_tang_points(point &a, point &b, const point& xy, bool below) const;
void push_tang_point(point &a, const point& xy, bool below, const rational& correct_val, const rational& val) const;
void push_tang_points(point &a, point &b, const point& xy, bool below, const rational& correct_val, const rational& val) const;
rational tang_plane(const point& a, const point& x) const;
void get_tang_points(point &a, point &b, bool below, const rational& val, const point& xy) const;
std::ostream& print_point(const point &a, std::ostream& out) const;
std::ostream& print_tangent_domain(const point &a, const point &b, std::ostream& out) const;
// "below" means that the val is below the surface xy
bool plane_is_correct_cut(const point& plane,
const point& xy,
const rational & correct_val,
const rational & val,
bool below) const;
template <typename T> rational val(T const& t) const;
template <typename T> lpvar var(T const& t) const { return t.var(); }
void tangent_lemma();
void generate_explanations_of_tang_lemma(const monic& rm, const factorization& bf, lp::explanation& exp);
}; // end of tangents
}
} // end of namespace