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Retire count_1s_8bit() 

Use the plain array lookup in the only place where it
is used. This remove an unecessary indirection and better
clarifies what code does.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
sf_2.3.1_base
Marco Costalba 2009-05-19 15:49:54 +01:00
parent 1e4472b651
commit 4f7ec4128f
1 changed files with 1 additions and 12 deletions
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13
src/evaluate.cpp
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@ -283,8 +283,6 @@ namespace {
inline Value apply_weight(Value v, int w);
Value scale_by_game_phase(Value mv, Value ev, Phase ph, const ScaleFactor sf[]);
int count_1s_8bit(Bitboard b);
int compute_weight(int uciWeight, int internalWeight);
int weight_option(const std::string& opt, int weight);
void init_safety();
@ -709,7 +707,7 @@ namespace {
Bitboard pawns = p.pawns(us) & this_and_neighboring_files_bb(s);
Rank r = square_rank(s);
for (int i = 1; i < 4; i++)
shelter += count_1s_8bit(shiftRowsDown(pawns, r+i*sign)) * (128>>i);
shelter += BitCount8Bit[shiftRowsDown(pawns, r+i*sign) & 0xFF] * (128 >> i);
// Cache shelter value in pawn info
ei.pi->setKingShelter(us, s, shelter);
@ -1166,15 +1164,6 @@ namespace {
}
// count_1s_8bit() counts the number of nonzero bits in the 8 least
// significant bits of a Bitboard. This function is used by the king
// shield evaluation.
int count_1s_8bit(Bitboard b) {
return int(BitCount8Bit[b & 0xFF]);
}
// compute_weight() computes the value of an evaluation weight, by combining
// an UCI-configurable weight with an internal weight.