In article <fd544688-5e9c-418e-9ca9-11b9bcb83...@googlegroups.com>, <jonas.thornv...@gmail.com> wrote: >Den tisdag 7 april 2015 kl. 16:30:15 UTC+2 skrev Denis McMahon: >> On Tue, 07 Apr 2015 09:29:59 -0400, Dave Angel wrote: >> >> > On 04/07/2015 05:44 AM, jonas.thornv...@gmail.com wrote: >> >> >> I want todo faster baseconversion for very big bases like base 1 000 >> >> 000, so instead of adding up digits i search it. >> >> > How do you know the baseconversion is the bottleneck, if you haven't >> > written any Python code yet? >> >> He doesn't. He doesn't comprehend that as far as a computer is concerned >> an integer has no specific 'base', it's only when presented in a form for >> humans to read that it gets base information added in the representation. >> >> He's making these and other similar errors in the javascript groups too. >> >> I suspect he's one of those people that spends his time thinking up >> elaborate solutions that he has no idea how to implement as a response to >> dreamt up non existent problems. >> >> -- >> Denis McMahon, denismfmcma...@gmail.com > >Bullshit declare two integers in any language one 7 and one 4 and then >write x=7+4; if you find a programming language where that does not >yield 11 tell me. > >Integers are internally assumed to be base 10 otherwise you could not >calculate without giving the base. > >All operations on integers addition, subtraction, multiplication and >division assume base 10.
Fire up a lowlevel interpreter like Forth. (e.g. gforth) 7 CONSTANT A 4 CONSTANT B A B + PAD ! PAD now contains the sum of A and B. Now inspect the actual computer memory: PAD 100 DUMP You will see the bytes, represented in base 16, but PAD just contains 11 PAD ? 11 OK In forth you can change the number base. That doesn't affect PAD but the output is different HEX PAD ? B OK DECIMAL Groetjes Albert -- Albert van der Horst, UTRECHT,THE NETHERLANDS Economic growth -- being exponential -- ultimately falters. albert@spe&ar&c.xs4all.nl &=n http://home.hccnet.nl/a.w.m.van.der.horst -- https://mail.python.org/mailman/listinfo/python-list
