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8b0fee9)
Results for 10 tests for each version (gcc 4.8.3 on mingw):
Base Test Diff
Mean
1502447 1507917 -5470
StDev 3119 1364 4153
p-value: 0,906
speedup: 0,004
Results for 10 tests for each version (MSVC 2013):
Base Test Diff
Mean
1400899 1403713 -2814
StDev 1273 2804 2700
p-value: 0,851
speedup: 0,002
No functional change.
// Locate and remove the next least valuable attacker
captured = min_attacker<PAWN>(byTypeBB, to, stmAttackers, occupied, attackers);
// Locate and remove the next least valuable attacker
captured = min_attacker<PAWN>(byTypeBB, to, stmAttackers, occupied, attackers);
-
- // Stop before processing a king capture
- if (captured == KING)
- {
- if (stmAttackers == attackers)
- ++slIndex;
-
- break;
- }
-
stm = ~stm;
stmAttackers = attackers & pieces(stm);
++slIndex;
stm = ~stm;
stmAttackers = attackers & pieces(stm);
++slIndex;
- } while (stmAttackers);
+ } while (stmAttackers && (captured != KING || (--slIndex, false))); // Stop before a king capture
// Having built the swap list, we negamax through it to find the best
// achievable score from the point of view of the side to move.
// Having built the swap list, we negamax through it to find the best
// achievable score from the point of view of the side to move.