Ah, alright. I wasn't sure what the situation was on 32-bit platforms.
On Wednesday, 12 February 2014 10:22:10 UTC-6, Stefan Karpinski wrote: > > This is not a bug, it's by design: > http://docs.julialang.org/en/latest/manual/faq/#why-does-julia-use-native-machine-integer-arithmetic > . > > > On Wed, Feb 12, 2014 at 11:20 AM, Eric Davies <[email protected]<javascript:> > > wrote: > >> Those on 64-bit systems can replicate this bug with abs(2^63) or >> abs(-9223372036854775808). >> >> The issue here is that the number 2^31 overflows the Int32 type to >> -(2^31). The fact that it returns itself is somewhat coincidental. >> >> This is probably a bug, but there are sometimes reasons for allowing >> overflow. >> >> On Wednesday, 12 February 2014 09:56:15 UTC-6, MikeEI wrote: >>> >>> abs(-2147483648) results in -2147483648 ??? >>> >>> @which(abs(-2147483648)) results in >>> abs(x::Signed) at intfuncs.jl:29 >>> >>> Shouldn't the type system promote to Int64 as there is no corresponding >>> Int32 value or indicate error? >>> >>> Just a newcomers/learners question. >>> >>> P.S.: Using version 0.2.0 (2013-11-16) on Linux Mint 32 bit system. >>> >> >
