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

namespace bench1
{
    class Program
    {
        static void Main(string[] args)
        {
            double[] d = new double[1000000];
            double i;
            int j;
            for (i = 0, j = 0; j < d.Length; i += 0.00351, j++)
                d[j] = i;

            Stopwatch t = new Stopwatch();

            //--------------------------------------------------------------------
            Console.Write("test 1 - fft: ");
            t.Start();
            test1(false, false, true, d);
            t.Stop();
            Console.Write(t.ElapsedMilliseconds.ToString() + " ms\n");

            Console.Write("test 2 - fft: ");
            t.Reset();
            t.Start();
            test2(false, false, true, d);
            t.Stop();
            Console.Write(t.ElapsedMilliseconds.ToString() + " ms\n");
            //--------------------------------------------------------------------
            Console.Write("test 1 - tft: ");
            t.Reset();
            t.Start();
            test2(true, false, true, d);
            t.Stop();
            Console.Write(t.ElapsedMilliseconds.ToString() + " ms\n");

            Console.Write("test 2 - tft: ");
            t.Reset();
            t.Start();
            test2(true, false, true, d);
            t.Stop();
            Console.Write(t.ElapsedMilliseconds.ToString() + " ms\n");
            //--------------------------------------------------------------------
            Console.Write("test 1 - ttt: ");
            t.Reset();
            t.Start();
            test2(true, true, true, d);
            t.Stop();
            Console.Write(t.ElapsedMilliseconds.ToString() + " ms\n");

            Console.Write("test 2 - ttt: ");
            t.Reset();
            t.Start();
            test2(true, true, true, d);
            t.Stop();
            Console.Write(t.ElapsedMilliseconds.ToString() + " ms\n");

            Console.ReadKey(true);
        }

        static void test1(bool c1, bool c2, bool c3, double[] dati)
        {
            for (int i = 0; i < dati.Length; i++) {
                if (c1) testFun1(dati[i]);
                if (c2) testFun2(dati[i]);
                if (c3) testFun3(dati[i]);
            }
        }

        static void test2(bool c1, bool c2, bool c3, double[] dati)
        {
            if (c1) for (int i = 0; i < dati.Length; i++) testFun1(dati[i]);
            if (c2) for (int i = 0; i < dati.Length; i++) testFun2(dati[i]);
            if (c3) for (int i = 0; i < dati.Length; i++) testFun3(dati[i]);
        }

        static void testFun1(double d)
        {
            Random r = new Random(TimeZone.CurrentTimeZone.ToUniversalTime(DateTime.Today).Second);
            int[] a = new int[20];

            for (int i = 0; i < a.Length; i++)
                a[i] = r.Next() + Convert.ToInt32(d);

            double a1, a2, b1, b2;

            a1 = Convert.ToDouble(a[r.Next(a.Length)]);
            a2 = Convert.ToDouble(a[r.Next(a.Length)]);

            if (a1 > 15 && a1 < 1800 || a2 - a1 > 0 && a2 != 18)
                b1 = b2 = Convert.ToDouble(a[0].ToString());
            else
                b1 = b2 = 0;

            double x = a1 * (a2 - a1) * Math.Cos(Math.Sin(b1 * 5)) / Math.Tanh(Math.Cos(a2) + Math.Sin(a1));
            x *= 2.0142145 / Math.Exp(d);
        }

        static void testFun2(double d)
        {
            Random r = new Random(TimeZone.CurrentTimeZone.ToUniversalTime(DateTime.Today).Second);
            int[] a = new int[20];

            for (int i = 0; i < a.Length; i++)
                a[i] = r.Next() + Convert.ToInt32(d);

            double a1, a2, b1, b2;

            a1 = Convert.ToDouble(a[r.Next(a.Length)]);
            a2 = Convert.ToDouble(a[r.Next(a.Length)]);

            if (a1 > 15 && a1 < 1800 || a2 - a1 > 0 && a2 != 18)
                b1 = b2 = Convert.ToDouble(a[0].ToString());
            else
                b1 = b2 = 0;

            double x = a1 * (a2 - a1) * Math.Cos(Math.Sin(b1 * 5)) / Math.Tanh(Math.Cos(a2) + Math.Sin(a1));
            x *= 2.0142145 / Math.Exp(d);
        }

        static void testFun3(double d)
        {
            Random r = new Random(TimeZone.CurrentTimeZone.ToUniversalTime(DateTime.Today).Second);
            int[] a = new int[20];

            for (int i = 0; i < a.Length; i++)
                a[i] = r.Next() + Convert.ToInt32(d);

            double a1, a2, b1, b2;

            a1 = Convert.ToDouble(a[r.Next(a.Length)]);
            a2 = Convert.ToDouble(a[r.Next(a.Length)]);

            if (a1 > 15 && a1 < 1800 || a2 - a1 > 0 && a2 != 18)
                b1 = b2 = Convert.ToDouble(a[0].ToString());
            else
                b1 = b2 = 0;

            double x = a1 * (a2 - a1) * Math.Cos(Math.Sin(b1 * 5)) / Math.Tanh(Math.Cos(a2) + Math.Sin(a1));
            x *= 2.0142145 / Math.Exp(d);
        }
    }
}