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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2023-09-20 15:22:28 -07:00
parent 615aad7779
commit f9de65a464
1 changed files with 9 additions and 9 deletions
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18
src/math/lp/lp_bound_propagator.h
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@ -183,27 +183,27 @@ public:
} }
void propagate_monic(lpvar monic_var, const svector<lpvar>& vars) { void propagate_monic(lpvar monic_var, const svector<lpvar>& vars) {
lpvar non_fixed, zero_var; lpvar non_fixed, zero_var;
if (!is_linear(vars, zero_var, non_fixed)) if (!is_linear(vars, zero_var, non_fixed))
return; return;
if (zero_var != null_lpvar) if (zero_var != null_lpvar)
add_bounds_for_zero_var(monic_var, zero_var); add_bounds_for_zero_var(monic_var, zero_var);
else { else {
rational k = rational(1); rational k = rational(1);
for (auto v : vars) for (auto v : vars)
if (v != non_fixed) { if (v != non_fixed) {
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) if (non_fixed != null_lpvar)
propagate_monic_with_non_fixed(monic_var, vars, non_fixed, k); propagate_monic_with_non_fixed(monic_var, vars, non_fixed, k);
else // all variables are fixed else // all variables are fixed
propagate_monic_with_all_fixed(monic_var, vars, k); 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, const rational& k) { void propagate_monic_with_non_fixed(lpvar monic_var, const svector<lpvar>& vars, lpvar non_fixed, const rational& k) {
lp::impq bound_value; lp::impq bound_value;
bool is_strict; bool is_strict;