Re: [Pharo-dev] what is the relationship between Float and its subclasses?

What about something like that My instances hold 64-bit Floats in heap objects. This is the only representation on 32-bit systems. But on 64-bit systems SmallFloat64 holds a subset of the full 64-bit double-precision range in immediate objects. BoxedFloat64 is the classical VM Float, two 4-bytes word allocated per Float, and is both for 32 bits VM and Float values not fitting in immediate format. This is because 3 bits have been removed from the exponent due to the object internal representation needed for the Spur new garbage collector. So on a 32 bits VM Floats are represented either by BoxedFloat64 or Float.