Signed Decimals

[webmaster128]

Requires #1710

[ewoolsey]

Out of curiosity has there been any progress on this enhancement since I posted there in January?

[webmaster128]

Development wise, nope. But I got confirmation from at least 2 collegues now that we don't want signed integers that are based on an Positive/Negative enum or a struct with a signed field as many users suggested before. Instead we'll go for traditional integers based on two's complement (#1710) that do not use more than 128bit/256bit/512bit in memory. Once we have Int128 and Int256 we can make a signed Decimal and Decimal256.