X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Ftypes.h;h=f5e30c7401bc82a14fd37d47bbc7b55082475a07;hp=623e51d9856570b713e69431d121378d0f1e2c61;hb=2f1935078da225c90f7887ed8c345cc7baebcfcc;hpb=5ea08e79c4e510b65b3e18c9ab09919132976eec

diff --git a/src/types.h b/src/types.h
index 623e51d9..f5e30c74 100644
--- a/src/types.h
+++ b/src/types.h
@@ -158,6 +158,9 @@ const bool CpuIs64Bit = false;
 typedef uint64_t Key;
 typedef uint64_t Bitboard;
 
+const int PLY_MAX = 100;
+const int PLY_MAX_PLUS_2 = PLY_MAX + 2;
+
 enum ValueType {
   VALUE_TYPE_NONE  = 0,
   VALUE_TYPE_UPPER = 1,
@@ -172,6 +175,10 @@ enum Value {
   VALUE_MATE      = 30000,
   VALUE_INFINITE  = 30001,
   VALUE_NONE      = 30002,
+
+  VALUE_MATE_IN_PLY_MAX  =  VALUE_MATE - PLY_MAX,
+  VALUE_MATED_IN_PLY_MAX = -VALUE_MATE + PLY_MAX,
+
   VALUE_ENSURE_INTEGER_SIZE_P = INT_MAX,
   VALUE_ENSURE_INTEGER_SIZE_N = INT_MIN
 };
@@ -456,4 +463,8 @@ inline bool square_is_ok(Square s) {
   return s >= SQ_A1 && s <= SQ_H8;
 }
 
+inline Square pawn_push(Color c) {
+  return c == WHITE ? DELTA_N : DELTA_S;
+}
+
 #endif // !defined(TYPES_H_INCLUDED)