Jip J. Dekker
35a3110598
git-subtree-dir: software/chuffed git-subtree-split: 2ed0c01558d2a5c49c1ce57e048d32c17adf92d3
88 lines
1.9 KiB
C++
88 lines
1.9 KiB
C++
#include <chuffed/core/propagator.h>
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void bool_rel(BoolView x, BoolRelType t, BoolView y, BoolView z) {
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// NOT_SUPPORTED;
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BoolView v[3] = {x, y, z};
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int u = 0;
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for (int l = 1; l <= 3; l++) {
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for (int i = 0; i < 8; i++) {
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if (bitcount<int>(i) != l) continue;
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for (int j = 0; j < 8; j++) {
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if (j & ~i) continue;
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int flags = 0;
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for (int k = 0; k < 8; k++) {
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bool pass = true;
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for (int m = 0; m < 3; m++) {
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if ((i & (1<<m)) == 0) continue;
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if (((k^j) & (1<<m)) == 0) pass = false;
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}
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if (pass) flags |= (1<<k);
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}
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if (t & flags) continue;
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if ((flags & ~u) == 0) continue;
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vec<Lit> ps;
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for (int m = 0; m < 3; m++) {
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if ((i & (1<<m)) == 0) continue;
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bool p = (j>>m)&1;
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if (l == 1) {
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if (v[m].setValNotR(p)) if (!v[m].setVal(p)) TL_FAIL();
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}
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ps.push(v[m].getLit(p));
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}
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if (l >= 2) sat.addClause(ps);
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u |= flags;
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}
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}
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}
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}
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//-----
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// \/ x_i \/ !y_i
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void bool_clause(vec<BoolView>& x, vec<BoolView>& y) {
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vec<Lit> ps;
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for (int i = 0; i < x.size(); i++) ps.push(x[i]);
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for (int i = 0; i < y.size(); i++) ps.push(~y[i]);
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sat.addClause(ps);
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}
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// \/ x_i
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void bool_clause(vec<BoolView>& x) {
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vec<BoolView> b;
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bool_clause(x, b);
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}
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//-----
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// \/ x_i \/ !y_i <-> z
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// n+1 clauses
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void array_bool_or(vec<BoolView>& x, vec<BoolView>& y, BoolView z) {
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for (int i = 0; i < x.size(); i++) sat.addClause(~x[i], z);
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for (int i = 0; i < y.size(); i++) sat.addClause(y[i], z);
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// Add clause !c \/ a_i \/ !b_i
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vec<Lit> ps;
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ps.push(~z);
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for (int i = 0; i < x.size(); i++) ps.push(x[i]);
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for (int i = 0; i < y.size(); i++) ps.push(~y[i]);
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sat.addClause(ps);
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}
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void array_bool_or(vec<BoolView>& x, BoolView z) {
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vec<BoolView> y;
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array_bool_or(x, y, z);
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}
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// /\ x_i /\ !y_i <-> z
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void array_bool_and(vec<BoolView>& x, vec<BoolView>& y, BoolView z) {
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array_bool_or(y, x, ~z);
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}
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void array_bool_and(vec<BoolView>& x, BoolView z) {
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vec<BoolView> y;
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array_bool_and(x, y, z);
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}
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