Форум программистов [Powered by Invision Power Board]

Код

    public partial class Form1 : Form
    {
        private bool doIt;

        public Form1()
        {
            InitializeComponent();
            int year = DateTime.Now.Year;
            doIt = year < 2010;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            DateTime dtm = DateTime.Now;
            AddStr("button1_Click: Button press. Current time: " + dtm.ToLongTimeString());
            Application.DoEvents();
            Test();
            DateTime now = DateTime.Now;
            TimeSpan diff = now - dtm;
            AddStr("button1_Click: timediff=" + diff.ToString());
        }

        private void Test()
        {
            DateTime dtm = DateTime.Now;
            AddStr("Test: Function call. Current time: " + dtm.ToLongTimeString());
            Application.DoEvents();
            int st = Environment.TickCount;
            AddStr("Test: tickCount=" + st.ToString());
            Application.DoEvents();
            long sum = 0;
            int res = DateTime.Now.Millisecond;
            for (int i = 0; i < 500000000; i++)
            {
                if (doIt) // всегда false
                {
                    double a = 1 + res;
                    double b = 500;
                    double c = a * b + 555;
                    double e = c / b + 3;
// Этот блок повторяется много раз.
                    e += sum;
                    b -= e * res / a;
                    b += sum * e / res + a * c + c;
                    e -= b * 60 / a + b - c + e;
// \
                    res = (int)(a + b + c + e);
                }
                if (res > 1000)
                {
                    res -= 500;
                }
                else
                {
                    res += 500;
                }
                sum += res - 500;
            }
            int nst = Environment.TickCount;
            AddStr("Test: newTickCount=" + nst.ToString());
            st = nst - st;
            AddStr("Test: Time=" + st.ToString() + " x=" + sum.ToString());
        }