public void RoundTripZigZag64()
{
Assert.AreEqual(0, ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(0)));
Assert.AreEqual(1, ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(1)));
Assert.AreEqual(-1, ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(-1)));
Assert.AreEqual(14927, ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(14927)));
Assert.AreEqual(-3612, ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(-3612)));
Assert.AreEqual(856912304801416L,
ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(856912304801416L)));
Assert.AreEqual(-75123905439571256L,
ParsingPrimitives.DecodeZigZag64(WritingPrimitives.EncodeZigZag64(-75123905439571256L)));
}
public void EncodeZigZag64()
{
Assert.AreEqual(0u, WritingPrimitives.EncodeZigZag64(0));
Assert.AreEqual(1u, WritingPrimitives.EncodeZigZag64(-1));
Assert.AreEqual(2u, WritingPrimitives.EncodeZigZag64(1));
Assert.AreEqual(3u, WritingPrimitives.EncodeZigZag64(-2));
Assert.AreEqual(0x000000007FFFFFFEuL,
WritingPrimitives.EncodeZigZag64(unchecked ((long)0x000000003FFFFFFFUL)));
Assert.AreEqual(0x000000007FFFFFFFuL,
WritingPrimitives.EncodeZigZag64(unchecked ((long)0xFFFFFFFFC0000000UL)));
Assert.AreEqual(0x00000000FFFFFFFEuL,
WritingPrimitives.EncodeZigZag64(unchecked ((long)0x000000007FFFFFFFUL)));
Assert.AreEqual(0x00000000FFFFFFFFuL,
WritingPrimitives.EncodeZigZag64(unchecked ((long)0xFFFFFFFF80000000UL)));
Assert.AreEqual(0xFFFFFFFFFFFFFFFEL,
WritingPrimitives.EncodeZigZag64(unchecked ((long)0x7FFFFFFFFFFFFFFFUL)));
Assert.AreEqual(0xFFFFFFFFFFFFFFFFL,
WritingPrimitives.EncodeZigZag64(unchecked ((long)0x8000000000000000UL)));
}
/// <summary>
/// Computes the number of bytes that would be needed to encode an
/// sint64 field, including the tag.
/// </summary>
public static int ComputeSInt64Size(long value)
{
return(ComputeRawVarint64Size(WritingPrimitives.EncodeZigZag64(value)));
}
