If you want to tackle multiplications, you should do it via bases... 10 and 2 being the easiest but not the most efficient.
Knowing the laws of power series and logs will be of great help as they can tell you what digit goes where... But Rev can't handle the sums so you need an array (or items) to do the digit/symbol segmentation per polinomial level. So in the end, it's like doing the math with paper and pencil ;) cheers Xav On 24.05.2005 11:55:25 use-revolution-bounces wrote: >sez [EMAIL PROTECTED]: >>Very nice! >Thanks! > >>That's the easy part though ;) >[nods] Don't I know it! > >>Divisions is where it gets harder... >And square roots... and powers... and DIV and MOD... and... >I've already come up with an infinite-precision algorithm for >multiplication which looks promising; I haven't coded it up yet, however, so I >am not >entirely certain how well it will work out "in real life". In pseudocode: > >InfPreMult N1, N2 >put 0 into Rezult >Put N1 into Fred >Repeat until N2 = 0 >If N1 is odd then add Adder to Rezult >Add Fred to Fred >put N1 div 2 into N1 >end repeat >End of algorithm > >Naturally, there's also the option of splitting N1 and N2 up into >7-character chunks, doing all the multiplies for the relevant chunk-pairs, and >combining the results of said multiplies. That looks like it'd be a pain to >code, so >I am going to try the other algorithm first. Depending on how fast it is, I >may or may not want to give "7-char chunks" a try as well. > >>...and using arrays may be much more efficient than using strings or >numbers... >>But items could work well too but wouldn't it be slower? >I've never touched arrays before. I shall have to see if arrays make a >difference, speed-wise. Every millisecond -- heck, every *micro*second -- counts >in this sort of thing. >_______________________________________________ >use-revolution mailing list >[email protected] >http://lists.runrev.com/mailman/listinfo/use-revolution ----------------------------------------- Visit us at http://www.clearstream.com IMPORTANT MESSAGE Internet communications are not secure and therefore Clearstream International does not accept legal responsibility for the contents of this message. The information contained in this e-mail is confidential and may be legally privileged. It is intended solely for the addressee. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any views expressed in this e-mail are those of the individual sender, except where the sender specifically states them to be the views of Clearstream International or of any of its affiliates or subsidiaries. END OF DISCLAIMER _______________________________________________ use-revolution mailing list [email protected] http://lists.runrev.com/mailman/listinfo/use-revolution
