-/// The MaterialInfoTable class represents a pawn hash table. It is basically
-/// just an array of MaterialInfo objects and a few methods for accessing these
-/// objects. The most important method is get_material_info, which looks up a
-/// position in the table and returns a pointer to a MaterialInfo object.
-
-class MaterialInfoTable {
-
-public:
- MaterialInfoTable(unsigned numOfEntries);
- ~MaterialInfoTable();
- void clear();
- MaterialInfo *get_material_info(const Position &pos);
-
-private:
- unsigned size;
- MaterialInfo *entries;
- EndgameFunctions* funcs;
-};
-
-
-////
-//// Inline functions
-////
-
-/// MaterialInfo::mg_value and MaterialInfo::eg_value simply returns the
-/// material balance evaluation for the middle game and the endgame.
-
-inline Value MaterialInfo::mg_value() const {
- return Value(mgValue);
-}
-
-inline Value MaterialInfo::eg_value() const {
- return Value(egValue);
-}
-
-
-/// MaterialInfo::clear() resets a MaterialInfo object to an empty state,
-/// with all slots at their default values.
-
-inline void MaterialInfo::clear() {
- mgValue = egValue = 0;
- factor[WHITE] = factor[BLACK] = uint8_t(SCALE_FACTOR_NORMAL);
- evaluationFunction = NULL;
- scalingFunction[WHITE] = scalingFunction[BLACK] = NULL;
-}
-
-
-/// MaterialInfo::scale_factor takes a position and a color as input, and
-/// returns a scale factor for the given color. We have to provide the
-/// position in addition to the color, because the scale factor need not
-/// be a constant: It can also be a function which should be applied to
-/// the position. For instance, in KBP vs K endgames, a scaling function
-/// which checks for draws with rook pawns and wrong-colored bishops.
-
-inline ScaleFactor MaterialInfo::scale_factor(const Position &pos, Color c)
- const {
- if(scalingFunction[c] != NULL) {
- ScaleFactor sf = scalingFunction[c]->apply(pos);
- if(sf != SCALE_FACTOR_NONE)
- return sf;