I agree that you were onto something -- not what you first thought, though. The docs tell me to expect typemax(Int8)+typemax(Int8) yields Int(254) <aside: Int16(254) would be a better choice imho> Running v0.4-dev+6253 : Int8(127) + Int8(127) ] yields Int8(-2)
On Tuesday, August 4, 2015 at 12:26:46 PM UTC-4, Sisyphuss wrote: > > @Jeffrey, I don't quite get your idea. You agree with me? > > From your example, the document has claimed something it hasn't done? > > > > On Tuesday, August 4, 2015 at 5:34:51 AM UTC+2, Jeffrey Sarnoff wrote: >> >> >> (cont.) >> after reading that, I did not expect this: >> >>> >>> ```julia >>> >> >> >>> julia> a=typemax(Int8)+typemax(Int8) >>> -2 >>> >>> julia> a=typemax(Int8)*typemax(Int8) >>> 1 >>> >>> julia> a=typemin(Int8)-typemax(Int8) >>> 1 >>> ``` >>> >>> >>> ``` >>> >>> >>> >>> >>> >>> >>> >>> On Monday, August 3, 2015 at 7:42:03 PM UTC-4, Sisyphuss wrote: >>>> >>>> "integer addition... operands are promoted to Int or UInt from >>>> narrower integer types" ( >>>> http://docs.julialang.org/en/latest/manual/integers-and-floating-point-numbers/ >>>> ) >>>> >>>> "These catch-all rules first promote all operands to a common type " ( >>>> http://docs.julialang.org/en/latest/manual/conversion-and-promotion/#man-conversion-and-promotion >>>> ) >>>> >>>> `Int8` is definitely not a subclass of `Int`, do this two assertions >>>> contradict to each other? >>>> >>>
