/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
+ Copyright (C) 2008-2013 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
(at your option) any later version.
*/
-#if !defined(RKISS_H_INCLUDED)
+#ifndef RKISS_H_INCLUDED
#define RKISS_H_INCLUDED
#include "types.h"
class RKISS {
- // Keep variables always together
- struct S { uint64_t a, b, c, d; } s;
+ struct S { uint64_t a, b, c, d; } s; // Keep variables always together
uint64_t rotate(uint64_t x, uint64_t k) const {
return (x << k) | (x >> (64 - k));
}
- // Return 64 bit unsigned integer in between [0, 2^64 - 1]
uint64_t rand64() {
const uint64_t
s.a = 0xf1ea5eed;
s.b = s.c = s.d = 0xd4e12c77;
- for (int i = 0; i < seed; i++) // Scramble a few rounds
+ for (int i = 0; i < seed; ++i) // Scramble a few rounds
rand64();
}
template<typename T> T rand() { return T(rand64()); }
};
-#endif // !defined(RKISS_H_INCLUDED)
+#endif // #ifndef RKISS_H_INCLUDED