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introduce bitloops

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mike
2026-01-17 03:42:33 +01:00
parent d3c7128cf9
commit 81ea708345
2 changed files with 6 additions and 41 deletions
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45
src/main/java/puzzle/SwedishGenerator.java
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@@ -10,7 +10,6 @@ import lombok.val;
import precomp.Neighbors9x8; import precomp.Neighbors9x8;
import precomp.Neighbors9x8.rci; import precomp.Neighbors9x8.rci;
import puzzle.Export.Bit1029; import puzzle.Export.Bit1029;
import puzzle.Export.ClueAt;
import puzzle.Export.DictEntryDTO; import puzzle.Export.DictEntryDTO;
import puzzle.Export.Gridded; import puzzle.Export.Gridded;
import puzzle.Export.Strings; import puzzle.Export.Strings;
@@ -732,7 +731,7 @@ public record SwedishGenerator(Rng rng, int[] stack, Clues cache) {
} }
return best.grid; return best.grid;
} }
static long patternForSlot2(final long glo, final long ghi, final byte[] g, final int key, final long lo, final long hi) { static long patternForSlot(final long glo, final long ghi, final byte[] g, final int key, final long lo, final long hi) {
if (((lo & glo) | (hi & ghi)) == X) return 0; if (((lo & glo) | (hi & ghi)) == X) return 0;
long p = 0; long p = 0;
int n = 0; int n = 0;
@@ -763,36 +762,6 @@ public record SwedishGenerator(Rng rng, int[] stack, Clues cache) {
} }
return p; return p;
} }
static long patternForSlot(final long glo, final long ghi, final byte[] g, final int key, final long lo, final long hi) {
if (((lo & glo) | (hi & ghi)) == X) return 0;
long p = 0;
if (Slot.increasing(key)) {
for (long b = lo & glo; b != X; b &= b - 1) {
int idx = numberOfTrailingZeros(b);
int i = bitCount(lo & ((1L << idx) - 1));
p |= ((long) (i * 26 + g[idx])) << (i << 3);
}
int offset = bitCount(lo);
for (long b = hi & ghi; b != X; b &= b - 1) {
int idx = numberOfTrailingZeros(b);
int i = offset + bitCount(hi & ((1L << idx) - 1));
p |= ((long) (i * 26 + g[64 | idx])) << (i << 3);
}
} else {
int offset = bitCount(hi);
for (long b = hi & ghi; b != X; b &= b - 1) {
int idx = numberOfTrailingZeros(b);
int i = bitCount(hi & ~((1L << idx) | ((1L << idx) - 1)));
p |= ((long) (i * 26 + g[64 | idx])) << (i << 3);
}
for (long b = lo & glo; b != X; b &= b - 1) {
int idx = numberOfTrailingZeros(b);
int i = offset + bitCount(lo & ~((1L << idx) | ((1L << idx) - 1)));
p |= ((long) (i * 26 + g[idx])) << (i << 3);
}
}
return p;
}
static int slotScore(byte[] count, long lo, long hi) { static int slotScore(byte[] count, long lo, long hi) {
int cross = 0; int cross = 0;
for (long b = lo; b != X; b &= b - 1) cross += (count[numberOfTrailingZeros(b)] - 1); for (long b = lo; b != X; b &= b - 1) cross += (count[numberOfTrailingZeros(b)] - 1);
@@ -866,11 +835,7 @@ public record SwedishGenerator(Rng rng, int[] stack, Clues cache) {
int[] indices = new int[count]; int[] indices = new int[count];
for (int k = 0, ki = 0; k < numLongs; k++) { for (int k = 0, ki = 0; k < numLongs; k++) {
long w = res[k]; for (long w = res[k]; w != X; w &= w - 1) indices[ki++] = (k << 6) | numberOfTrailingZeros(w);
while (w != X) {
indices[ki++] = (k << 6) | numberOfTrailingZeros(w);
w &= w - 1;
}
} }
return indices; return indices;
@@ -977,7 +942,7 @@ public record SwedishGenerator(Rng rng, int[] stack, Clues cache) {
for (int i = 0, count, count2 = -1, bestScore = -1, n = TOTAL; i < n; i++) { for (int i = 0, count, count2 = -1, bestScore = -1, n = TOTAL; i < n; i++) {
var s = slots[i]; var s = slots[i];
if (s.assign.w != X) continue; if (s.assign.w != X) continue;
var pattern = patternForSlot2(glo, ghi, g, s.key, s.lo, s.hi); var pattern = patternForSlot(glo, ghi, g, s.key, s.lo, s.hi);
var index = s.entry; var index = s.entry;
count = pattern == X ? index.length : candidateCountForPattern(bitset, pattern, index.posBitsets, index.numlong); count = pattern == X ? index.length : candidateCountForPattern(bitset, pattern, index.posBitsets, index.numlong);
@@ -999,7 +964,7 @@ public record SwedishGenerator(Rng rng, int[] stack, Clues cache) {
current = PICK_DONE; current = PICK_DONE;
return; return;
} }
var pattern = patternForSlot2(glo, ghi, g, best.key, best.lo, best.hi); var pattern = patternForSlot(glo, ghi, g, best.key, best.lo, best.hi);
var index = best.entry; var index = best.entry;
current = CARRIER; current = CARRIER;
current.slot = best; current.slot = best;
@@ -1071,7 +1036,7 @@ public record SwedishGenerator(Rng rng, int[] stack, Clues cache) {
low = glo; low = glo;
top = ghi; top = ghi;
if (!placeWord(k, slo, shi, w)) continue; if (!placeWord(k, slo, shi, w)) continue;
Bit1029.set(used, lemIdx); Bit1029.set(used, lemIdx);
s.assign.w = w; s.assign.w = w;
if (backtrack(depth + 1)) return true; if (backtrack(depth + 1)) return true;

2
src/test/java/puzzle/SwedishGeneratorTest.java
View File

@@ -155,7 +155,7 @@ public class SwedishGeneratorTest {
placeWord(grid, grid.g, Slot.packSlotKey(0, CLUE_RIGHT), 1L << OFF_2_0, 0, Lemma.from(0, "C")); placeWord(grid, grid.g, Slot.packSlotKey(0, CLUE_RIGHT), 1L << OFF_2_0, 0, Lemma.from(0, "C"));
var key = Slot.packSlotKey(OFF_1_0, CLUE_RIGHT); var key = Slot.packSlotKey(OFF_1_0, CLUE_RIGHT);
var pattern = patternForSlot(grid.lo, grid.hi, grid.g, key, 7L, 0L); var pattern = patternForSlot(grid.lo, grid.hi, grid.g, key, 7L, 0L);
assertEquals(1L | (55L << 16), pattern); assertEquals(14081L, pattern);
} }
@Test @Test