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Improve comments about DEPTH constants

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Also "fix" movepicker to allow depths between CHECKS and NO_CHECKS,
which makes them easier to tweak (not that they get tweaked hardly ever)
(This was more beneficial when there was a third stage to DEPTH_QS, but
it's still an improvement now)

closes https://github.com/official-stockfish/Stockfish/pull/5205

No functional change
This commit is contained in:
Dubslow
2023-04-04 22:55:52 -05:00
committed by Disservin
parent c14b69790a
commit ed79745bb9
5 changed files with 43 additions and 26 deletions
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src/tt.h
+4 -1
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@@ -37,12 +37,15 @@ namespace Stockfish {
// move 16 bit
// value 16 bit
// eval value 16 bit
//
// These fields are in the same order as accessed by TT::probe(), since memory is fastest sequentially.
// Equally, the store order in save() matches this order.
struct TTEntry {
Move move() const { return Move(move16); }
Value value() const { return Value(value16); }
Value eval() const { return Value(eval16); }
Depth depth() const { return Depth(depth8 + DEPTH_OFFSET); }
Depth depth() const { return Depth(depth8 + DEPTH_ENTRY_OFFSET); }
bool is_pv() const { return bool(genBound8 & 0x4); }
Bound bound() const { return Bound(genBound8 & 0x3); }
void save(Key k, Value v, bool pv, Bound b, Depth d, Move m, Value ev, uint8_t generation8);