Re: [Flashforth-devel] Free form number

[Mikael N. <mik...@pp...>]

I plan now to do it like this
Just one punctuation char for grouping digits.

Single precision number
#-10.345
%1011.1101.1111.0000
$fad.e

Double precision numbers
%1011.1101.1111.0000.
#-10.345.
$fade.babe.


Mike Miller,
Do you have some code you could share ?
For instance on the FF Wiki. You can add new pages there, just a SF account is needed.

It would be great to get more community contribution to this open source project.

BR Mike

On 03/27/2014 08:25 AM, Mike Miller wrote:
> Forth typically converts a double number when there is ANY of the following punctuation chrs present anywhere in the number   , . / - :
> The exception is a leading - chr which indictes a negative number. See Starting Forth, Leo Brodie.
>
> These punctuations support European and US number and time formats, and many others. I see nothing wrong with adding the _ chr.
>
> FF 4.8 only recognizes a . chr at the end of the digits, so I needed to write my own number conversion word.
> A double number format closer to the standard would be nice.
>
>   
> Mike Miller
> Moon Valley Circuits
> mi...@mo...
> http://www.moonvalleycircuits.com/
>
>
> On 3/26/14 10:38 AM, Mikael Nordman wrote:
>> I could easily extend the FF >number so that it
>> would work as today but just ignore certain punctuation.
>>
>> What would be the best choice for punctuation ?
>> Perhaps the comma character.
>>
>> Or use the period anywhere in number to indicate that it as double number.
>> Not having any punctuation in  single numbers. This is how
>> it is described in Forth Programmers Handbook.
>>
>> Single precision number
>> #10,345
>> %1011,1101,1111,0000
>> $fad,e
>>
>> Double precision numbers
>> %1011_1101_1111_0000.
>> #10,345.
>> $fade,babe.
>> $f,a,d,e,b,a,b,e.
>>
>>
>> You proposal with separate parsing words can be implemented as an add-on
>> if wanted.
>>
>> BR Mike
>>
>>
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