/*
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
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;
/// open() tries to open a book file with the given name after closing any
-/// exsisting one.
+/// existing one.
bool PolyglotBook::open(const char* fName) {
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);