FYI
NB. enumerate x:0.333... for between 1 and 20 decimal places
(>:i.20),.x:+/"1 (10^>:i.20)%~"1(3#~])"0>:i.q =. 20
1 3r10
2 33r100
3 333r1000
4 3333r10000
5 33333r100000
6 333333r1000000
7 3333333r10000000
8 1r3
9 166666671r500000014
10 3333333057r9999999173
11 33333330575r99999991726
12 1r3
13 1r3
14 1r3
15 1r3
16 1r3
17 1r3
18 1r3
19 1r3
20 1r3
in Windows 8 - same in J32 & J64
Mike
On 13/11/2014 14:56, Ben Gorte - CITG wrote:
I guess that's why Linda asked: Should 0.33333333 really be 1r3 ?
Raul showed that it is.
(I also don't get it)
________________________________________
From: [email protected] [[email protected]] on
behalf of Dan Bron [[email protected]]
Sent: Thursday, November 13, 2014 15:39
To: [email protected]
Subject: Re: [Jbeta] Odd Pattern of Rationals
Linda, exact numbers have to be exact from the get-go. If a number starts
out inexact, it will stay inexact forever, even if you later apply x:
(though then it will be quite exactly inexact :).
Thus, to get 1r3 you must say 1r3. If you say 0.333 you'll get 0.333 .
That's not 1r3 and never will be.
-Dan
----- Original Message ---------------
Subject: [Jbeta] Odd Pattern of Rationals
From: "Linda Alvord" <[email protected]>
Date: Wed, 12 Nov 2014 23:10:14 -0500
To: <[email protected]>
Should 0.33333333 really be 1r3 ?
x: 0.333333
333333r1000000
x: 0.3333333
3333333r10000000
x: 0.33333333
1r3
x: 0.333333333
166666671r500000014
x: 0.3333333333
3333333057r9999999173
Linda
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