using System;

namespace BitStrap
{
	public class FastRandom
	{
		private const float REAL_UNIT_INT = 4.656613E-10f;

		private uint x;

		private uint y;

		private uint z;

		private uint w;

		public FastRandom()
		{
			SetSeed(Environment.TickCount);
		}

		public int GetNextInt()
		{
			uint num = x ^ (x << 11);
			x = y;
			y = z;
			z = w;
			return (int)(0x7FFFFFFF & (w = w ^ (w >> 19) ^ (num ^ (num >> 8))));
		}

		public float GetNextFloat()
		{
			return 4.656613E-10f * (float)GetNextInt();
		}

		public void SetSeed(int seed)
		{
			x = (uint)(seed * 1431655781 + seed * 1183186591 + seed * 622729787 + seed * 338294347);
			y = 842502087u;
			z = 3579807591u;
			w = 273326509u;
		}
	}
}