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Rename shift_bb() to shift()

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Rename shift_bb() to shift(), and DELTA_S to SOUTH, etc.
to improve code readability, especially in evaluate.cpp
when they are used together:

    old b = shift_bb<DELTA_S>(pos.pieces(PAWN))
    new b = shift<SOUTH>(pos.pieces(PAWN))

While there fix some small code style issues.

No functional change.
This commit is contained in:
Stéphane Nicolet
2016-09-23 19:28:34 +02:00
committed by Marco Costalba
parent 351844061e
commit 7ae3c05795
12 changed files with 103 additions and 100 deletions
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10
src/endgame.cpp
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@@ -259,8 +259,8 @@ Value Endgame<KRKP>::operator()(const Position& pos) const {
result = Value(80) - 8 * distance(wksq, psq);
else
result = Value(200) - 8 * ( distance(wksq, psq + DELTA_S)
- distance(bksq, psq + DELTA_S)
result = Value(200) - 8 * ( distance(wksq, psq + SOUTH)
- distance(bksq, psq + SOUTH)
- distance(psq, queeningSq));
return strongSide == pos.side_to_move() ? result : -result;
@@ -496,7 +496,7 @@ ScaleFactor Endgame<KRPKR>::operator()(const Position& pos) const {
// If the defending king blocks the pawn and the attacking king is too far
// away, it's a draw.
if ( r <= RANK_5
&& bksq == wpsq + DELTA_N
&& bksq == wpsq + NORTH
&& distance(wksq, wpsq) - tempo >= 2
&& distance(wksq, brsq) - tempo >= 2)
return SCALE_FACTOR_DRAW;
@@ -517,10 +517,10 @@ ScaleFactor Endgame<KRPKR>::operator()(const Position& pos) const {
&& file_of(wrsq) == f
&& wrsq < wpsq
&& (distance(wksq, queeningSq) < distance(bksq, queeningSq) - 2 + tempo)
&& (distance(wksq, wpsq + DELTA_N) < distance(bksq, wpsq + DELTA_N) - 2 + tempo)
&& (distance(wksq, wpsq + NORTH) < distance(bksq, wpsq + NORTH) - 2 + tempo)
&& ( distance(bksq, wrsq) + tempo >= 3
|| ( distance(wksq, queeningSq) < distance(bksq, wrsq) + tempo
&& (distance(wksq, wpsq + DELTA_N) < distance(bksq, wrsq) + tempo))))
&& (distance(wksq, wpsq + NORTH) < distance(bksq, wrsq) + tempo))))
return ScaleFactor( SCALE_FACTOR_MAX
- 8 * distance(wpsq, queeningSq)
- 2 * distance(wksq, queeningSq));