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Re: Best search algorithm to find a condition within a range.

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jonas.thornvall@gmail.com writes:

> I want todo faster baseconversion for very big bases like base 1 000
> 000, so instead of adding up digits i search it.

The size of the base is immaterial, provided that it is in the range for
which arithmetic operations are exact.  1,000,000 is well within that
range.

<snip>
> <SCRIPT LANGUAGE="Javascript"> 
> //CONVERT A DECIMAL NUMBER INTO ANYBASE 
> function newbase(decNumber,base){ 

Your terms are wrong, and I don't think this is just a trivial detail --
I think maybe it points to something you've misunderstood.  The value in
"decNumber" is not decimal -- it's just a number.  Internally it is
represented in a very well-defined format that uses binary for both a
fraction and an exponent, but you don't need to care about that.  You
just want to do arithmetic on it.  (Maybe one day you will write a
routine like this that takes a bignum in base X and converts it to
bignum in base Y, but for the moment, you don't seem to be doing that at
all.)

Anyway, the algorithm for representing a number in base B is the same
whatever the base is: the least significant digit is obtained by using
the remainder operation (%) and you can move on to the next one by
dividing the number by the base.  I think you know this already.

<snip>
-- 
Ben.

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Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 02:43 -0700
  Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-07 13:07 +0200
    Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 04:38 -0700
      Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 04:48 -0700
      Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-07 14:49 +0200
  Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-07 13:27 +0100
    Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 06:04 -0700
      Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-07 14:23 +0100
        Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 06:54 -0700
          Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-07 16:31 +0100
            Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 08:59 -0700
              Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-07 19:58 +0100
                Re: Best search algorithm to find a condition within a range. Dr J R Stockton <reply1500@merlyn.demon.co.uk.invalid> - 2015-04-09 23:08 +0100
                Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-10 00:02 +0100
            Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-07 18:37 +0200
              Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 09:55 -0700
                Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-07 20:30 +0200
                Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-07 20:58 +0200
                Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-07 22:19 +0200
                Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-08 00:14 -0700
                Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-08 10:55 +0200
                Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-09 13:03 +0200
                Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 14:11 +0200
                Re: Best search algorithm to find a condition within a range. "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-04-09 14:55 +0200
                Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 15:20 +0200
                Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-09 14:49 +0100
                Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-09 16:10 +0200
                Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 16:17 +0200
                Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-09 07:22 -0700
                Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 16:44 +0200
                Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-09 07:57 -0700
                Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-09 08:05 -0700
                Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-09 17:04 +0100
                Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-09 16:14 +0200
                Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 16:34 +0200
                Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-09 17:39 +0200
                Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 18:04 +0200
                Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-09 18:26 +0200
                Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 22:13 +0200
              Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 10:00 -0700
    Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 06:16 -0700
      Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-07 15:28 +0200
        Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 06:58 -0700
          Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-07 20:25 +0200
      Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-07 14:33 +0100

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