private void SeedInitialization(ulong seed)
{
/* initializes mt with a seed */
ulong s = (seed != 0 ? seed : SeedGenerator.Instance().Get());
_mt[0] = s & 0xffffffffUL;
for (_mti = 1; _mti < N; _mti++)
{
_mt[_mti] = (1812433253UL * (_mt[_mti - 1] ^ (_mt[_mti - 1] >> 30)) + (ulong)_mti);
/* See Knuth TAOCP Vol2. 3rd Ed. P.106 for multiplier. */
/* In the previous versions, MSBs of the seed affect */
/* only MSBs of the array mt[]. */
/* 2002/01/09 modified by Makoto Matsumoto */
_mt[_mti] &= 0xffffffffUL;
/* for >32 bit machines */
}
}
