ONE_PLY = 1,
- DEPTH_ZERO = 0,
- DEPTH_QS_CHECKS = 0,
- DEPTH_QS_NO_CHECKS = -1,
- DEPTH_QS_RECAPTURES = -5,
+ DEPTH_ZERO = 0 * ONE_PLY,
+ DEPTH_QS_CHECKS = 0 * ONE_PLY,
+ DEPTH_QS_NO_CHECKS = -1 * ONE_PLY,
+ DEPTH_QS_RECAPTURES = -5 * ONE_PLY,
- DEPTH_NONE = -6,
- DEPTH_MAX = MAX_PLY
+ DEPTH_NONE = -6 * ONE_PLY,
+ DEPTH_MAX = MAX_PLY * ONE_PLY
};
+static_assert(!(ONE_PLY & (ONE_PLY - 1)), "ONE_PLY is not a power of 2");
+
enum Square {
SQ_A1, SQ_B1, SQ_C1, SQ_D1, SQ_E1, SQ_F1, SQ_G1, SQ_H1,
SQ_A2, SQ_B2, SQ_C2, SQ_D2, SQ_E2, SQ_F2, SQ_G2, SQ_H2,