Parse halfmove clock and fullmove number from FEN

[stockfish] / src / move.h

diff --git a/src/move.h b/src/move.h
index 71def812d85743708d1a6ed22622aba696c2f6d0..d06e381a761c819a6b93c88f9093e532a73b7534 100644 (file)
--- a/src/move.h
+++ b/src/move.h
@@ -1,7 +1,7 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
-  Copyright (C) 2008-2009 Marco Costalba
+  Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -31,6 +31,8 @@
 #include "piece.h"
 #include "square.h"
 
+// Maximum number of allowed moves per position
+const int MOVES_MAX = 256;
 
 ////
 //// Types
@@ -62,25 +64,24 @@ struct MoveStack {
   int score;
 };
 
-// Note that operator< is set up such that sorting will be in descending order
-inline bool operator<(const MoveStack& f, const MoveStack& s) { return s.score < f.score; }
+inline bool operator<(const MoveStack& f, const MoveStack& s) { return f.score < s.score; }
 
-// An helper insertion sort implementation
-template<typename T>
-inline void insertion_sort(T* firstMove, T* lastMove)
+// An helper insertion sort implementation, works with pointers and iterators
+template<typename T, typename K>
+inline void insertion_sort(K firstMove, K lastMove)
 {
     T value;
-    T *cur, *p, *d;
+    K cur, p, d;
 
     if (firstMove != lastMove)
         for (cur = firstMove + 1; cur != lastMove; cur++)
         {
             p = d = cur;
             value = *p--;
-            if (value < *p)
+            if (*p < value)
             {
                 do *d = *p;
-                while (--d != firstMove && value < *--p);
+                while (--d != firstMove && *--p < value);
                 *d = value;
             }
         }
@@ -89,7 +90,7 @@ inline void insertion_sort(T* firstMove, T* lastMove)
 // Our dedicated sort in range [firstMove, lastMove), first splits
 // positive scores from ramining then order seaprately the two sets.
 template<typename T>
-inline void sort_moves(T* firstMove, T* lastMove)
+inline void sort_moves(T* firstMove, T* lastMove, T** lastPositive)
 {
     T tmp;
     T *p, *d;
@@ -101,11 +102,11 @@ inline void sort_moves(T* firstMove, T* lastMove)
 
     // Split positives vs non-positives
     do {
-        while ((++p)->score > 0);
+        while ((++p)->score > 0) {}
 
         if (p != d)
         {
-            while (--d != p && d->score <= 0);
+            while (--d != p && d->score <= 0) {}
 
             tmp = *p;
             *p = *d;
@@ -114,9 +115,9 @@ inline void sort_moves(T* firstMove, T* lastMove)
 
     } while (p != d);
 
-    // Sort positives and non-positives separately
-    insertion_sort<T>(firstMove, p);
-    insertion_sort<T>(p, lastMove);
+    // Sort just positive scored moves, remaining only when we get there
+    insertion_sort<T, T*>(firstMove, p);
+    *lastPositive = p;
 }
 
 // Picks up the best move in range [curMove, lastMove), one per cycle.
@@ -130,7 +131,7 @@ inline T pick_best(T* curMove, T* lastMove)
     bestMove = *curMove;
     while (++curMove != lastMove)
     {
-        if (*curMove < bestMove)
+        if (bestMove < *curMove)
         {
             tmp = *curMove;
             *curMove = bestMove;
@@ -201,10 +202,9 @@ inline Move make_ep_move(Square from, Square to) {
 //// Prototypes
 ////
 
-extern std::ostream& operator<<(std::ostream &os, Move m);
-extern Move move_from_string(const Position &pos, const std::string &str);
-extern const std::string move_to_string(Move m);
+extern std::ostream& operator<<(std::ostream& os, Move m);
+extern Move move_from_uci(const Position& pos, const std::string &str);
+extern const std::string move_to_uci(Move m, bool chess960);
 extern bool move_is_ok(Move m);
 
-
 #endif // !defined(MOVE_H_INCLUDED)