/// <summary>
/// seed傪庬偲偟偨丄period偱昞偝傟傞廃婜偺媅帡棎悢僕僃僱儗乕僞乕傪弶婜壔偟傑偡丅
/// </summary>
public SFMT( int seed, MTPeriodType period ) : this(seed, (int)period) { }
/// <summary>
/// seed傪庬偲偟偨丄period偱昞偝傟傞廃婜偺媅帡棎悢僕僃僱儗乕僞乕傪弶婜壔偟傑偡丅
/// </summary>
public SFMT( int seed, MTPeriodType period ) : this(seed, (int)period) { }