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Postings from October 2008
Larry Wall wrote: > On Fri, Oct 03, 2008 at 11:57:30PM -0400, Michael G Schwern wrote: > : What's the status of numeric upgrades in Perl 6? Is see the docs say "Perl 6 > : intrinsically supports big integers and rationals through its system of type > : declarations. Int automatically supports promotion to arbitrary precision" but > : it looks like it's doing the same thing as Perl 5. > : > : $ ./perl6 -e 'say 2**40' > : 1099511627776 > : > : $ ./perl6 -e 'say 2**50' > : 1.12589990684262e+15 > : > : $ ./perl6 -e 'say 2**1100' > : inf > > The status of numeric upgrades in Perl 6 is fine. It's rakudo that > doesn't do so well. :) > > As another datapoint: > > $ pugs -e 'say 2**40' > 1099511627776 > $ pugs -e 'say 2**50' > 1125899906842624 > $ pugs -e 'say 2**1100' > 13582985290493858492773514283592667786034938469317445497485196697278130927542418487205392083207560592298578262953847383475038725543234929971155548342800628721885763499406390331782864144164680730766837160526223176512798435772129956553355286032203080380775759732320198985094884004069116123084147875437183658467465148948790552744165376 That's good [1] to hear, thanks. > I don't think of Int as a type that automatically upgrades. I think > of it as an arbritrarily large integer that the implementation can in > some cases choose to optimize to a smaller or faster representation, Oh don't worry, I do. I just got so flustered when I saw Rakudo do the same thing that Perl 5 does I was worried this got lost somewhere along the line. [1] We need a polite way to say "less bad". -- The mind is a terrible thing, and it must be stopped.