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 depth() const { return (Depth)(depth8 * int(ONE_PLY)); }
Bound bound() const { return (Bound)(genBound8 & 0x3); }
void save(Key k, Value v, Bound b, Depth d, Move m, Value ev, uint8_t g) {
+ assert(d / ONE_PLY * ONE_PLY == d);
+
// Preserve any existing move for the same position
if (m || (k >> 48) != key16)
move16 = (uint16_t)m;
// Don't overwrite more valuable entries
if ( (k >> 48) != key16
- || d > depth8 - 2
+ || d / ONE_PLY > depth8 - 4
/* || g != (genBound8 & 0xFC) // Matching non-zero keys are already refreshed by probe() */
|| b == BOUND_EXACT)
{
value16 = (int16_t)v;
eval16 = (int16_t)ev;
genBound8 = (uint8_t)(g | b);
- depth8 = (int8_t)d;
+ depth8 = (int8_t)(d / ONE_PLY);
}
}