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Introduce distance() and unify some API

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Original work by Lucas.

No functional change.
This commit is contained in:
Marco Costalba
2014-11-08 14:04:14 +01:00
parent 8631b08d97
commit 6fb0a1bc40
7 changed files with 63 additions and 69 deletions
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4
src/bitbase.cpp
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@@ -114,7 +114,7 @@ namespace {
result = UNKNOWN;
// Check if two pieces are on the same square or if a king can be captured
if ( square_distance(wksq, bksq) <= 1
if ( distance(wksq, bksq) <= 1
|| wksq == psq
|| bksq == psq
|| (us == WHITE && (StepAttacksBB[PAWN][psq] & bksq)))
@@ -125,7 +125,7 @@ namespace {
// Immediate win if a pawn can be promoted without getting captured
if ( rank_of(psq) == RANK_7
&& wksq != psq + DELTA_N
&& ( square_distance(bksq, psq + DELTA_N) > 1
&& ( distance(bksq, psq + DELTA_N) > 1
||(StepAttacksBB[KING][wksq] & (psq + DELTA_N))))
result = WIN;
}