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refactor propagat_monic

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This commit is contained in:
Lev Nachmanson 2023-09-17 10:45:54 -07:00
parent 7353d7fb4d
commit 30b743d7b3
1 changed files with 96 additions and 87 deletions
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23
src/math/lp/lp_bound_propagator.h
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@ -192,9 +192,19 @@ private:
k *= lp().get_column_value(v).x; k *= lp().get_column_value(v).x;
if (k.is_big()) return; if (k.is_big()) return;
} }
if (non_fixed != null_lpvar) {
propagate_monic_with_non_fixed(monic_var, vars, non_fixed, k);
} else { // all variables are fixed
propagate_monic_with_all_fixed(monic_var, vars, k);
}
}
}
void propagate_monic_with_non_fixed(lpvar monic_var, const svector<lpvar>& vars, lpvar non_fixed, rational k) {
lp::impq bound_value; lp::impq bound_value;
bool is_strict; bool is_strict;
if (non_fixed != null_lpvar) {
if (lower_bound_is_available(non_fixed)) { if (lower_bound_is_available(non_fixed)) {
bound_value = lp().column_lower_bound(non_fixed); bound_value = lp().column_lower_bound(non_fixed);
is_strict = !bound_value.y.is_zero(); is_strict = !bound_value.y.is_zero();
@ -209,10 +219,11 @@ private:
return dep; return dep;
}; };
if (k.is_pos()) if (k.is_pos())
add_lower_bound_monic(monic_var, k * bound_value.x, is_strict , lambda); add_lower_bound_monic(monic_var, k * bound_value.x, is_strict, lambda);
else else
add_upper_bound_monic(monic_var, k * bound_value.x, is_strict, lambda); add_upper_bound_monic(monic_var, k * bound_value.x, is_strict, lambda);
} }
if (upper_bound_is_available(non_fixed)) { if (upper_bound_is_available(non_fixed)) {
bound_value = lp().column_upper_bound(non_fixed); bound_value = lp().column_upper_bound(non_fixed);
is_strict = !bound_value.y.is_zero(); is_strict = !bound_value.y.is_zero();
@ -269,15 +280,13 @@ private:
else else
add_upper_bound_monic(non_fixed, bound_value.x / k, is_strict, lambda); add_upper_bound_monic(non_fixed, bound_value.x / k, is_strict, lambda);
} }
}
void propagate_monic_with_all_fixed(lpvar monic_var, const svector<lpvar>& vars, rational k) {
} else { // all variables are fixed auto lambda = [vars](int* s) { return ((lp_bound_propagator*)s)->lp().get_bound_constraint_witnesses_for_columns(vars); };
auto lambda = [vars](int* s){return ((lp_bound_propagator*)s)->lp().get_bound_constraint_witnesses_for_columns(vars);};
add_lower_bound_monic(monic_var, k, false, lambda); add_lower_bound_monic(monic_var, k, false, lambda);
add_upper_bound_monic(monic_var, k, false, lambda); add_upper_bound_monic(monic_var, k, false, lambda);
} }
}
}
column_type get_column_type(unsigned j) const { column_type get_column_type(unsigned j) const {
return (*m_column_types)[j]; return (*m_column_types)[j];