public void PerformanceTestByteArraySerialization()
{
long before;
UInt32 value;
Byte[] array = new Byte[] { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
before = Stopwatch.GetTimestamp();
for (int i = 0; i < 10000000; i++)
{
value = (UInt32)(
(0xFF000000U & (array[0] << 24)) |
(0x00FF0000U & (array[1] << 16)) |
(0x0000FF00U & (array[2] << 8)) |
(0x000000FFU & (array[3])));
}
Console.WriteLine((Stopwatch.GetTimestamp() - before).StopwatchTicksAsInt64Milliseconds());
before = Stopwatch.GetTimestamp();
for (int i = 0; i < 10000000; i++)
{
value = BitConverter.ToUInt32(array, 1);
}
Console.WriteLine((Stopwatch.GetTimestamp() - before).StopwatchTicksAsInt64Milliseconds());
before = Stopwatch.GetTimestamp();
for (int i = 0; i < 10000000; i++)
{
value = array.BigEndianReadUInt32(1);
}
Console.WriteLine((Stopwatch.GetTimestamp() - before).StopwatchTicksAsInt64Milliseconds());
}
public void TestBigEndianSerializationForLargeIntegerTypes()
{
Byte[] buffer = new Byte[256];
// UInt32
{
Console.WriteLine("-----------------------------------------");
Console.WriteLine("Testing UInt32...");
Console.WriteLine("-----------------------------------------");
UInt32[] testValues = new UInt32[] { 0, 0x80, 0x800000, 0x80000000, 0xFF, 0xFFFF, 0xFFFFFF, 0xFFFFFFF, 0xFFFFFFFF,
0x7F, 0x7FFFFF, 0x7FFFFFFF, 0x100, 0x80, 0xFF, 1, 2, 0x128EF92E, 0xFF00FF00, 0x12345678 };
for (UInt32 i = 0; i < testValues.Length; i++)
{
UInt32 testValue = testValues[i];
Console.WriteLine(testValue);
Console.WriteLine(testValue);
buffer.BigEndianSetUInt32(i, testValue);
Assert.AreEqual((Byte)(testValue >> 24), buffer[i]);
Assert.AreEqual((Byte)(testValue >> 16), buffer[i + 1]);
Assert.AreEqual((Byte)(testValue >> 8), buffer[i + 2]);
Assert.AreEqual((Byte)testValue, buffer[i + 3]);
Assert.AreEqual(testValue, buffer.BigEndianReadUInt32(i));
}
}
// Int32
{
Console.WriteLine("-----------------------------------------");
Console.WriteLine("Testing Int32...");
Console.WriteLine("-----------------------------------------");
Int32[] testValues = new Int32[] { 0, 0x80, 0x800000, -1, 0xFF, 0xFFFF, 0xFFFFFF, 0xFFFFFFF,
0x7F, 0x7FFFFF, 0x7FFFFFFF, 0x100, 0x80, 0xFF, 1, 2, 0x128EF92E, 0x7F00FF00, 0x12345678 };
for (UInt32 i = 0; i < testValues.Length; i++)
{
Int32 testValue = testValues[i];
Console.WriteLine(testValue);
buffer.BigEndianSetInt32(i, testValue);
Assert.AreEqual((Byte)(testValue >> 24), buffer[i]);
Assert.AreEqual((Byte)(testValue >> 16), buffer[i + 1]);
Assert.AreEqual((Byte)(testValue >> 8), buffer[i + 2]);
Assert.AreEqual((Byte)testValue, buffer[i + 3]);
Assert.AreEqual(testValue, buffer.BigEndianReadInt32(i));
}
for (UInt32 i = 0; i < testValues.Length; i++)
{
Int32 testValue = -testValues[i];
Console.WriteLine(testValue);
buffer.BigEndianSetInt32(i, testValue);
Assert.AreEqual((Byte)(testValue >> 24), buffer[i]);
Assert.AreEqual((Byte)(testValue >> 16), buffer[i + 1]);
Assert.AreEqual((Byte)(testValue >> 8), buffer[i + 2]);
Assert.AreEqual((Byte)testValue, buffer[i + 3]);
Assert.AreEqual(testValue, buffer.BigEndianReadInt32(i));
}
}
/*
* // UInt64
* {
* Console.WriteLine("-----------------------------------------");
* Console.WriteLine("Testing UInt64...");
* Console.WriteLine("-----------------------------------------");
* UInt64[] testValues = new UInt64[] { 0, 0x80, 0x800000, 0x80000000, 0xFF, 0xFFFF, 0xFFFFFF, 0xFFFFFFF, 0xFFFFFFFF,
* 0x7F, 0x7FFFFF, 0x7FFFFFFF, 0x100, 0x80, 0xFF, 1, 2, 0x128EF92E, 0xFF00FF00, 0x12345678 };
* for (int i = 0; i < testValues.Length; i++)
* {
* UInt64 testValue = testValues[i];
* Console.WriteLine(testValue);
* Console.WriteLine(testValue);
* buffer.BigEndianSetUInt64(i, testValue);
* Assert.AreEqual((Byte)(testValue >> 24), buffer[i]);
* Assert.AreEqual((Byte)(testValue >> 16), buffer[i + 1]);
* Assert.AreEqual((Byte)(testValue >> 8), buffer[i + 2]);
* Assert.AreEqual((Byte)testValue, buffer[i + 3]);
* Assert.AreEqual(testValue, buffer.BigEndianReadUInt64(i));
* }
* }
*/
}
