/// <summary>
/// Writes a signed tag to the stream
/// </summary>
/// <param name="value">The value to write</param>
/// <param name="tag">The tag number, or 255 for an application tag</param>
public void WriteSigned64(long value, byte tag = 255)
{
int length;
if (value < (1L << 7) && value >= (-1L << 7))
{
length = 1;
}
else if (value < (1L << 15) && value >= (-1L << 15))
{
length = 2;
}
else if (value < (1L << 23) && value >= (-1L << 23))
{
length = 3;
}
else if (value < (1L << 31) && value >= (-1L << 31))
{
length = 4;
}
else if (value < (1L << 39) && value >= (-1L << 39))
{
length = 5;
}
else if (value < (1L << 47) && value >= (-1L << 47))
{
length = 6;
}
else if (value < (1L << 55) && value >= (-1L << 55))
{
length = 7;
}
else
{
length = 8;
}
_writeLengthHeader(tag, ApplicationTag.Signed, length);
var bytes = new Union8(value).ReverseLE();
switch (length)
{
case 8: _writer.Write(bytes.Byte0); goto case 7;
case 7: _writer.Write(bytes.Byte1); goto case 6;
case 6: _writer.Write(bytes.Byte2); goto case 5;
case 5: _writer.Write(bytes.Byte3); goto case 4;
case 4: _writer.Write(bytes.Byte4); goto case 3;
case 3: _writer.Write(bytes.Byte5); goto case 2;
case 2: _writer.Write(bytes.Byte6); goto case 1;
case 1: _writer.Write(bytes.Byte7); break;
}
}
/// <summary>
/// Writes an unsigned tag to the stream
/// </summary>
/// <param name="value">The value to write</param>
/// <param name="tag">The tag number, or 255 for an application tag</param>
public void WriteUnsigned64(ulong value, byte tag = 255)
{
int length;
if (value < (1ul << 8))
{
length = 1;
}
else if (value < (1ul << 16))
{
length = 2;
}
else if (value < (1ul << 24))
{
length = 3;
}
else if (value < (1ul << 32))
{
length = 4;
}
else if (value < (1ul << 40))
{
length = 5;
}
else if (value < (1ul << 48))
{
length = 6;
}
else if (value < (1ul << 56))
{
length = 7;
}
else
{
length = 8;
}
_writeLengthHeader(tag, ApplicationTag.Unsigned, length);
value = new Union8(value << (64 - (length * 8))).Reverse().UInt64;
for (int i = 0; i < length; i++)
{
_writer.Write((byte)value);
value >>= 8;
}
}
/// <summary>
/// Writes an unsigned tag to the stream
/// </summary>
/// <param name="value">The value to write</param>
/// <param name="tag">The tag number, or 255 for an application tag</param>
public void WriteUnsigned64(ulong value, byte tag = 255)
{
int length;
if (value < (1ul << 8))
length = 1;
else if (value < (1ul << 16))
length = 2;
else if (value < (1ul << 24))
length = 3;
else if (value < (1ul << 32))
length = 4;
else if (value < (1ul << 40))
length = 5;
else if (value < (1ul << 48))
length = 6;
else if (value < (1ul << 56))
length = 7;
else
length = 8;
_writeLengthHeader(tag, ApplicationTag.Unsigned, length);
value = new Union8(value << (64 - (length * 8))).Reverse().UInt64;
for(int i = 0; i < length; i++)
{
_writer.Write((byte)value);
value >>= 8;
}
}
/// <summary>
/// Writes a signed tag to the stream
/// </summary>
/// <param name="value">The value to write</param>
/// <param name="tag">The tag number, or 255 for an application tag</param>
public void WriteSigned64(long value, byte tag = 255)
{
int length;
if (value < (1L << 7) && value >= (-1L << 7))
length = 1;
else if (value < (1L << 15) && value >= (-1L << 15))
length = 2;
else if (value < (1L << 23) && value >= (-1L << 23))
length = 3;
else if (value < (1L << 31) && value >= (-1L << 31))
length = 4;
else if (value < (1L << 39) && value >= (-1L << 39))
length = 5;
else if (value < (1L << 47) && value >= (-1L << 47))
length = 6;
else if (value < (1L << 55) && value >= (-1L << 55))
length = 7;
else
length = 8;
_writeLengthHeader(tag, ApplicationTag.Signed, length);
var bytes = new Union8(value).ReverseLE();
switch (length)
{
case 8: _writer.Write(bytes.Byte0); goto case 7;
case 7: _writer.Write(bytes.Byte1); goto case 6;
case 6: _writer.Write(bytes.Byte2); goto case 5;
case 5: _writer.Write(bytes.Byte3); goto case 4;
case 4: _writer.Write(bytes.Byte4); goto case 3;
case 3: _writer.Write(bytes.Byte5); goto case 2;
case 2: _writer.Write(bytes.Byte6); goto case 1;
case 1: _writer.Write(bytes.Byte7); break;
}
}
