using System;

using System.Text;

using Murmur;

public class Program

{

    public static double GenerateMurmurHashFromSeed(uint seed, string value)

    {

        // The 32-bit hash function is very fast and should provide sufficient distribution for our use case

        // Speed is key here as each rollout rule evaluation will need to call this

        var murmur32Algo = MurmurHash.Create32(seed);

        var hashBytes = murmur32Algo.ComputeHash(Encoding.UTF8.GetBytes(value));

        var hash = BitConverter.ToInt32(hashBytes, 0);

​

        var positiveHash = hash & 0x7FFFFFFF;

        return positiveHash * (1.0 / int.MaxValue);

    }

    public static void Main()

    {

        string seedString = "3030856022";

        uint.TryParse(seedString, out uint seed);

        Console.WriteLine(GenerateMurmurHashFromSeed(seed, "instanceId"));

    }

}