Revisiting text to interval Re: Draft Standard Text, V02.1
All,
Revisiting the line that George started concerning inclusion of
"text to interval" in an arithmetic standard, I see that it morphed into
a discussion of whether or not we supply language bindings. However,
I differ with George in viewing "text to interval" conversion as a
language issue. In particular, "text" is well-defined in terms of
standard representation of characters, as are numeric formats through
754-2008. Furthermore, the conversions have been specified in
754 (even in the 1985 version). It may be important that we specify these
to clarify accuracy and "round down / round up" properties. If you
are uncomfortable calling it "text," perhaps we should call it "decimal
to binary" and "binary to decimal."
Baker
On 3/15/2010 15:29, Corliss, George wrote:
> Friends,
>
> Thanks, John.
>
> Reading this made me think of an issue perhaps worth some discussion: I/O.
>
> I might consider offering a motion: Since P1788 is a hardware standard, questions of input and output are not within the scope of the standard.
>
> Comments?
>
> Interval I/O is a fruitful topic for discussion. However, it seem to me that interval I/O is entirely a language issue, not a hardware issue.
>
> In John's draft standard (section 5.4.1), he specifies an interval constructor floats2interval(). That makes sense. He also lists a constructor text2interval(). If we are specifying an interval language/environment, I agree. If we are specifying interval hardware, I think it is out of scope.
>
> Similarly, I note almost no mention of interval output in these discussions. I think that is exactly right.
>
> Frequently, I have argued here for SIMPLICITY. Let's leave interval I/O out of this hardware standard.
>
> George
> On Mar 14, 2010, at 10:25 AM, John Pryce wrote:
>
>> P1788
>>
>> At last I have revised the draft Standard Text in the light of comments received. I urge EVERYONE to read this Version 02, sub-version 1, and give me comments, even if these are only that you (a) like it or (b) hate it.
>>
>> I think we are at a stage where parts, at least, of this document can be voted on to become official text. I shall discuss with the Officers in the next days on the best procedure to put this in hand.
>>
>> The Latex of this version is Revision 22 on the P1788 subversion server.
>>
>> Best wishes
>>
>> John Pryce
>> <P1788_MAIN.pdf>
>
> Dr. George F. Corliss
> Electrical and Computer Engineering
> Marquette University
> P.O. Box 1881
> 1515 W. Wisconsin Ave
> Milwaukee WI 53201-1881 USA
> 414-288-6599; GasDay: 288-4400; Fax 288-5579
> George.Corliss@xxxxxxxxxxxxx
> www.eng.mu.edu/corlissg
>
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R. Baker Kearfott, rbk@xxxxxxxxxxxxx (337) 482-5346 (fax)
(337) 482-5270 (work) (337) 993-1827 (home)
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Department of Mathematics, University of Louisiana at Lafayette
(Room 217 Maxim D. Doucet Hall, 1403 Johnston Street)
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