/// reconstructs a decimal value out of a signed integral component and a negative base-10 exponent
private static decimal ReconstructFromNegativeScale(decimal mantissa, byte scale)
{
Span <int> buf = stackalloc int[4];
CborHelpers.GetBitsFromDecimal(mantissa, buf);
int flags = buf[3];
bool isNegative = (flags & SignMask) == SignMask;
Debug.Assert((flags & ScaleMask) == 0, "mantissa argument should be integral.");
return(new decimal(lo: buf[0], mid: buf[1], hi: buf[2], isNegative: isNegative, scale: scale));
}
/// deconstructs a decimal value into its signed integral component and negative base-10 exponent
public static void Deconstruct(decimal value, out decimal mantissa, out byte scale)
{
Span <int> buf = stackalloc int[4];
CborHelpers.GetBitsFromDecimal(value, buf);
int flags = buf[3];
bool isNegative = (flags & SignMask) == SignMask;
mantissa = new decimal(lo: buf[0], mid: buf[1], hi: buf[2], isNegative: isNegative, scale: 0);
scale = (byte)((flags & ScaleMask) >> ScaleShift);
}