-Phase game_phase(const Position& pos);
-
-/// Material::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
-/// to 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 Entry::scale_factor(const Position& pos, Color c) const {
-
- return !scalingFunction[c] || (*scalingFunction[c])(pos) == SCALE_FACTOR_NONE
- ? ScaleFactor(factor[c]) : (*scalingFunction[c])(pos);
-}