After much discussion this was changed in 0.4.
> On Jun 17, 2015, at 6:33 PM, Phil Tomson <[email protected]> wrote: > > Maybe this is expected, but it was a bit of a surprise to me: > > julia> function foo() > red::Uint8 = 0x33 > blue::Uint8 = 0x36 > (red-blue) > end > julia> foo() > 0xfffffffffffffffd > julia> typeof(foo()) > Uint64 > > The fact that it overflowed wasn't surprising, but the fact that it got > converted to a Uint64 is a bit surprising (it ended up being a very large > number that got used in other calculations later which led to odd results) . > So it looks like all of the math operators will always promote to the largest > size (but keep the same signed or unsignedness). > > I'm wondering if it might make more sense if: > Uint8 - Uint8 -> Uint8 > Or more generally: UintN <op> UintN -> UintN ? > and: IntN <op> IntN -> IntN > > > >
