为什么UInt16数组的添加速度似乎比int数组快?

UInt16[] 比添加两个数组 int[] 需要更少的CPU工作,不是吗?

我运行了下面的测试代码,得到了以下结果:

Int    for 1000 took 9896625613 tick (4227 msec)
UInt16 for 1000 took 6297688551 tick (2689 msec)

1. 创建两个名为 a b ,一次。
3. 启动秒表。
4. 添加 A. 和 B ,逐项。这样做1000次。
5. 停止秒表。
6. 报告花了多长时间。

int[] a, b 以及 UInt16 a,b . 以及 当我运行代码时 UInt16 int 数组。你能给我解释一下吗?

以下是代码,如果您想自己尝试:

public static UInt16[] GenerateRandomDataUInt16(int length)
{
    UInt16[] noise = new UInt16[length];
    Random random = new Random((int)DateTime.Now.Ticks);
    for (int i = 0; i < length; ++i)
    {
        noise[i] = (UInt16)random.Next();
    }

    return noise;
}

public static int[] GenerateRandomDataInt(int length)
{
    int[] noise = new int[length];
    Random random = new Random((int)DateTime.Now.Ticks);
    for (int i = 0; i < length; ++i)
    {
        noise[i] = (int)random.Next();
    }

    return noise;
}

public static int[] AddInt(int[] a, int[] b)
{
    int len = a.Length;
    int[] result = new int[len];
    for (int i = 0; i < len; ++i)
    {
        result[i] = (int)(a[i] + b[i]);
    }
    return result;
}

public static UInt16[] AddUInt16(UInt16[] a, UInt16[] b)
{
    int len = a.Length;
    UInt16[] result = new UInt16[len];
    for (int i = 0; i < len; ++i)
    {
        result[i] = (ushort)(a[i] + b[i]);
    }
    return result;
}


public static void Main()
{
    int count = 1000;
    int len = 128 * 6000;

    int[] aInt = GenerateRandomDataInt(len);
    int[] bInt = GenerateRandomDataInt(len);

    Stopwatch s = new Stopwatch();
    s.Start();
    for (int i=0; i<count; ++i) 
    {
        int[] resultInt = AddInt(aInt, bInt);
    }
    s.Stop();
    Console.WriteLine("Int    for " + count 
                + " took " + s.ElapsedTicks + " tick (" 
                + s.ElapsedMilliseconds + " msec)");

    UInt16[] aUInt16 = GenerateRandomDataUInt16(len);
    UInt16[] bUInt16 = GenerateRandomDataUInt16(len);

    s = new Stopwatch();
    s.Start();
    for (int i=0; i<count; ++i) 
    {
        UInt16[] resultUInt16 = AddUInt16(aUInt16, bUInt16);
    }
    s.Stop();
    Console.WriteLine("UInt16 for " + count 
                + " took " + s.ElapsedTicks + " tick (" 
                + s.ElapsedMilliseconds + " msec)");


}