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Remove backmost_sq (#2190)

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This is a non-functional simplification.

backmost_sq and frontmost_sq are redundant. It seems quite clear to always use frontmost_sq and use the correct color.

Non functional change.
This commit is contained in:
protonspring 2019-06-14 00:22:02 -06:00 • committed by Marco Costalba
parent f9518de974
commit 8cfe27b765
3 changed files with 3 additions and 6 deletions
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5
src/bitboard.h
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@ -376,10 +376,7 @@ inline Square pop_lsb(Bitboard* b) {
}
/// frontmost_sq() and backmost_sq() return the most/least advanced square in
/// the given bitboard relative to the given color.
/// frontmost_sq() returns the most advanced square for the given color
inline Square frontmost_sq(Color c, Bitboard b) { return c == WHITE ? msb(b) : lsb(b); }
inline Square backmost_sq(Color c, Bitboard b) { return c == WHITE ? lsb(b) : msb(b); }
#endif // #ifndef BITBOARD_H_INCLUDED

2
src/endgame.cpp
View file

@ -365,7 +365,7 @@ ScaleFactor Endgame<KBPsK>::operator()(const Position& pos) const {
&& pos.count<PAWN>(weakSide) >= 1)
{
// Get weakSide pawn that is closest to the home rank
Square weakPawnSq = backmost_sq(weakSide, pos.pieces(weakSide, PAWN));
Square weakPawnSq = frontmost_sq(strongSide, pos.pieces(weakSide, PAWN));
Square strongKingSq = pos.square<KING>(strongSide);
Square weakKingSq = pos.square<KING>(weakSide);

2
src/pawns.cpp
View file

@ -190,7 +190,7 @@ void Entry::evaluate_shelter(const Position& pos, Square ksq, Score& shelter) {
for (File f = File(center - 1); f <= File(center + 1); ++f)
{
b = ourPawns & file_bb(f);
Rank ourRank = b ? relative_rank(Us, backmost_sq(Us, b)) : RANK_1;
Rank ourRank = b ? relative_rank(Us, frontmost_sq(Them, b)) : RANK_1;
b = theirPawns & file_bb(f);
Rank theirRank = b ? relative_rank(Us, frontmost_sq(Them, b)) : RANK_1;