using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading;


namespace Bench
{
    class Program
    {
        static void Main(string[] args)
        {
            var random = new Random();

            var list = Enumerable.Range(0, 1000000).Select(number => random.NextDouble() + number);

            var result = new[] { GetTime(list, YobaLinqTest),
                                 GetTime(list, ParsingDoubleNewTest),
                                 GetTime(list, ExtensionDoubleTest)
                               };

            foreach(var time in result)
            {
                Console.WriteLine(time);
            }


        }

        static TimeSpan GetTime(IEnumerable<double> collection, Action<double> action)
        {
            var bench = new Stopwatch();

            bench.Start();
            foreach (var number in collection)
            {
                action(number);
            }
            bench.Stop();


            return bench.Elapsed;
        }

        static void YobaLinqTest(double value)
        {
            value.ToString().Split(new[] { ',', '.' }).Select(number => Convert.ToInt64(number));
        }

        static void ParsingDoubleNewTest(double value)
        {
            string s = Math.Abs(value).ToString();
            int index = s.IndexOf(Thread.CurrentThread.CurrentCulture.NumberFormat.CurrencyDecimalSeparator);

            long integer = index != -1 ? Convert.ToInt64(s.Substring(0, index)) : Convert.ToInt32(s);
            long fractional = index != -1 ? Convert.ToInt64(s.Substring(index + 1)) : 0;
        }

        static void ExtensionDoubleTest(double value)
        {
            value.IntPart();
            value.FractPart();
        }

    }
}


public static class DoubleExtentions
{
    public static long IntPart(this double value)
    {
        return (long)Math.Truncate(value);
    }

    public static long FractPart(this double value)
    {
        var str = value.ToString();
        int sepIndex = str.LastIndexOf(Thread.CurrentThread.CurrentCulture.NumberFormat.CurrencyDecimalSeparator);
        return (sepIndex != -1) ? long.Parse(str.Substring(sepIndex + 1)) : 0;
    }
}