Remove some useless casts

[stockfish] / src / book.cpp

diff --git a/src/book.cpp b/src/book.cpp
index e523bf4a18419f4bd9a1da9b2e6ec8293b84c174..fbbc3fee3998c5723574743348faf68201187912 100644 (file)
--- a/src/book.cpp
+++ b/src/book.cpp
@@ -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) 2008-2013 Marco Costalba, Joona Kiiski, Tord Romstad
+  Copyright (C) 2008-2014 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
@@ -35,8 +35,8 @@ using namespace std;
 namespace {
 
   // A Polyglot book is a series of "entries" of 16 bytes. All integers are
-  // stored in big-endian format, with highest byte first (regardless of size).
-  // The entries are ordered according to the key in ascending order.
+  // stored in big-endian format, with the highest byte first (regardless of
+  // size). The entries are ordered according to the key in ascending order.
   struct Entry {
     uint64_t key;
     uint16_t move;
@@ -326,10 +326,10 @@ namespace {
     while (b)
     {
         Square s = pop_lsb(&b);
-        Piece p = pos.piece_on(s);
+        Piece pc = pos.piece_on(s);
 
         // PolyGlot pieces are: BP = 0, WP = 1, BN = 2, ... BK = 10, WK = 11
-        key ^= PG.Zobrist.psq[2 * (type_of(p) - 1) + (color_of(p) == WHITE)][s];
+        key ^= PG.Zobrist.psq[2 * (type_of(pc) - 1) + (color_of(pc) == WHITE)][s];
     }
 
     b = pos.can_castle(ANY_CASTLING);
@@ -372,7 +372,7 @@ template<> PolyglotBook& PolyglotBook::operator>>(Entry& e) {
 
 
 /// open() tries to open a book file with the given name after closing any
-/// exsisting one.
+/// existing one.
 
 bool PolyglotBook::open(const char* fName) {
 
@@ -410,9 +410,9 @@ Move PolyglotBook::probe(const Position& pos, const string& fName, bool pickBest
       best = max(best, e.count);
       sum += e.count;
 
-      // Choose book move according to its score. If a move has a very
-      // high score it has higher probability to be choosen than a move
-      // with lower score. Note that first entry is always chosen.
+      // Choose book move according to its score. If a move has a very high
+      // score it has a higher probability of being choosen than a move with
+      // a lower score. Note that first entry is always chosen.
       if (   (!pickBest && sum && rkiss.rand<unsigned>() % sum < e.count)
           || (pickBest && e.count == best))
           move = Move(e.move);