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Re: Calculate/Interpolate size of y in x^y = z when you do know "number of digits z" and base x?

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Den måndag 11 maj 2015 kl. 15:19:51 UTC+2 skrev Evertjan.:
> jonas.thornvall@gmail.com wrote on 11 mei 2015 in comp.lang.javascript:
> 
> > Subject: Calculate/Interpolate size of y in  x^y = z  when you do know 
> "number of  digits z" and  base  x?
> 
> Please do not use the subject line for your Q,
> or at least repeat it in the text.
> 
> Is "size of y" not the same as "value of y",
> and if not, why not? 
> 
> > If i have a very bignumber z in decimal, i know the number of digits let
> > us say 100 digits and base is x=64. 
> 
> "Very big number", bignumbers [as all substantives] cannot be "very".
> 
> What do you mean by "decimal" if the base is 64?
> 
> Doesn't "decimal" mean base=10? 
> 
> > How can i interpolate, find a closeby y (where base is x).
> 
> You are asking for a value, values have no base.
>  
> > I do understand that i can add 1 to y until i reach the neighbourhood.
> 
> Welcome to the neighborhood. 
> 
> The neighborhood of what?
>  
> > But is there any general rule to use to close in faster when you do know x 
> > and the number of digits in z?
> 
> Sorry?
> 
> -- 
> Evertjan.
> The Netherlands.
> (Please change the x'es to dots in my emailaddress)

An example using a small integer we search 2188 and base is 3.

So 2188=3^y  
y is an integer.

In this case the seareched *integer* would be y=7 since i search (min?) the smaller value, not y=8 (max?) the bigger value.

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Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? jonas.thornvall@gmail.com - 2015-05-11 04:22 -0700
  Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? jonas.thornvall@gmail.com - 2015-05-11 04:28 -0700
    Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? jonas.thornvall@gmail.com - 2015-05-11 05:47 -0700
      Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-05-11 13:56 +0100
        Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? jonas.thornvall@gmail.com - 2015-05-11 06:12 -0700
          Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? jonas.thornvall@gmail.com - 2015-05-11 06:19 -0700
          Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-05-11 21:49 +0100
  Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-11 15:19 +0200
    Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? jonas.thornvall@gmail.com - 2015-05-11 06:25 -0700
    Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? jonas.thornvall@gmail.com - 2015-05-11 06:30 -0700
      Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-11 18:18 +0200
        Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? jonas.thornvall@gmail.com - 2015-05-11 09:32 -0700
          Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-11 19:45 +0200
            Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-05-11 22:58 +0200
              Re: Calculate/Interpolate size of y in  x^y = z  when you do know "number of  digits z" and  base  x? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-11 23:13 +0200

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