Re: Unum in Clojure/ClojureScript?

2016-05-06 Thread Ashish Negi 
Wow.. mind blown away..
Thanks for sharing this.

For the implementation part, How would you do it as Clojure level ?
Are you asking about just testing the concept (i think this is what python 
"port" is doing) or 
being able to use the number representation system in practice ? 

Any ideas for general usability would be great !!!

-- 
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your 
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
--- 
You received this message because you are subscribed to the Google Groups 
"Clojure" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to clojure+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

Re: Unum in Clojure/ClojureScript?

2016-05-03 Thread James Elliott 
It is actually a correct claim, if you read the article I mentioned. It 
does not attempt to represent impossible things: When exact representation 
is impossible it represents a range that includes the correct value. The 
size of the range (and thus the loss of precision) is tracked, and grows 
far more slowly with repeated calculations than floating point numbers do. 
It really is a brilliant idea.

-James

On Tuesday, May 3, 2016 at 8:03:01 PM UTC-5, Jason Felice wrote:
>
> Just to point out, the OP claimed the number format has no rounding or 
> precision problems, which is not possible.  Think about ways to represent 
> pi for a bit!
>
> -Jason
>
>
> On Tue, May 3, 2016 at 5:51 PM, James Elliott  > wrote:
>
>> Heh! I just read about these in an email from ACM, and found your post by 
>> searching this Group for UNUM. It looks like not yet, but perhaps we should 
>> do something about that?
>>
>> The article which excited me:
>> http://ubiquity.acm.org/article.cfm?id=2913029
>>
>>
>> On Friday, November 6, 2015 at 8:23:35 AM UTC-6, Richard Davies wrote:
>>>
>>> Unum is a number representation system that is a superset of IEEE 
>>> integers and IEEE floats which avoids many problems (especially in floating 
>>> point arithmetic) as it has no rounding, no overflow to infinity, no 
>>> underflow to zero, and is safe to parallelize.
>>>
>>> I was wondering if anyone has implemented or is interested in 
>>> implementing this in Clojure/ClojureScript (or Java/JavaScript)?
>>>
>>> There is an existing reference implementation written in Mathematica and 
>>> it appears a port has already been done to Python: 
>>> https://github.com/jrmuizel/pyunum
>>>
>>> For more details of unum see
>>> https://www.youtube.com/watch?v=jN9L7TpMxeA
>>>
>>> https://www.crcpress.com/The-End-of-Error-Unum-Computing/Gustafson/9781482239867
>>> http://arith22.gforge.inria.fr/slides/06-gustafson.pdf
>>>
>>>
>>> -- 
>> You received this message because you are subscribed to the Google
>> Groups "Clojure" group.
>> To post to this group, send email to clo...@googlegroups.com 
>> 
>> Note that posts from new members are moderated - please be patient with 
>> your first post.
>> To unsubscribe from this group, send email to
>> clojure+u...@googlegroups.com 
>> For more options, visit this group at
>> http://groups.google.com/group/clojure?hl=en
>> --- 
>> You received this message because you are subscribed to the Google Groups 
>> "Clojure" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to clojure+u...@googlegroups.com .
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>

-- 
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your 
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
--- 
You received this message because you are subscribed to the Google Groups 
"Clojure" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to clojure+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

Re: Unum in Clojure/ClojureScript?

2016-05-03 Thread Jason Felice 
Just to point out, the OP claimed the number format has no rounding or
precision problems, which is not possible.  Think about ways to represent
pi for a bit!

-Jason


On Tue, May 3, 2016 at 5:51 PM, James Elliott  wrote:

> Heh! I just read about these in an email from ACM, and found your post by
> searching this Group for UNUM. It looks like not yet, but perhaps we should
> do something about that?
>
> The article which excited me:
> http://ubiquity.acm.org/article.cfm?id=2913029
>
>
> On Friday, November 6, 2015 at 8:23:35 AM UTC-6, Richard Davies wrote:
>>
>> Unum is a number representation system that is a superset of IEEE
>> integers and IEEE floats which avoids many problems (especially in floating
>> point arithmetic) as it has no rounding, no overflow to infinity, no
>> underflow to zero, and is safe to parallelize.
>>
>> I was wondering if anyone has implemented or is interested in
>> implementing this in Clojure/ClojureScript (or Java/JavaScript)?
>>
>> There is an existing reference implementation written in Mathematica and
>> it appears a port has already been done to Python:
>> https://github.com/jrmuizel/pyunum
>>
>> For more details of unum see
>> https://www.youtube.com/watch?v=jN9L7TpMxeA
>>
>> https://www.crcpress.com/The-End-of-Error-Unum-Computing/Gustafson/9781482239867
>> http://arith22.gforge.inria.fr/slides/06-gustafson.pdf
>>
>>
>> --
> You received this message because you are subscribed to the Google
> Groups "Clojure" group.
> To post to this group, send email to clojure@googlegroups.com
> Note that posts from new members are moderated - please be patient with
> your first post.
> To unsubscribe from this group, send email to
> clojure+unsubscr...@googlegroups.com
> For more options, visit this group at
> http://groups.google.com/group/clojure?hl=en
> ---
> You received this message because you are subscribed to the Google Groups
> "Clojure" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to clojure+unsubscr...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.
>

-- 
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your 
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
--- 
You received this message because you are subscribed to the Google Groups 
"Clojure" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to clojure+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

Re: Unum in Clojure/ClojureScript?

2016-05-03 Thread James Elliott 
Heh! I just read about these in an email from ACM, and found your post by 
searching this Group for UNUM. It looks like not yet, but perhaps we should 
do something about that?

The article which excited me:
http://ubiquity.acm.org/article.cfm?id=2913029

On Friday, November 6, 2015 at 8:23:35 AM UTC-6, Richard Davies wrote:
>
> Unum is a number representation system that is a superset of IEEE integers 
> and IEEE floats which avoids many problems (especially in floating point 
> arithmetic) as it has no rounding, no overflow to infinity, no underflow to 
> zero, and is safe to parallelize.
>
> I was wondering if anyone has implemented or is interested in implementing 
> this in Clojure/ClojureScript (or Java/JavaScript)?
>
> There is an existing reference implementation written in Mathematica and 
> it appears a port has already been done to Python: 
> https://github.com/jrmuizel/pyunum
>
> For more details of unum see
> https://www.youtube.com/watch?v=jN9L7TpMxeA
>
> https://www.crcpress.com/The-End-of-Error-Unum-Computing/Gustafson/9781482239867
> http://arith22.gforge.inria.fr/slides/06-gustafson.pdf
>
>
>

-- 
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your 
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
--- 
You received this message because you are subscribed to the Google Groups 
"Clojure" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to clojure+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

Unum in Clojure/ClojureScript?

2015-11-06 Thread Richard Davies 
Unum is a number representation system that is a superset of IEEE integers 
and IEEE floats which avoids many problems (especially in floating point 
arithmetic) as it has no rounding, no overflow to infinity, no underflow to 
zero, and is safe to parallelize.

I was wondering if anyone has implemented or is interested in implementing 
this in Clojure/ClojureScript (or Java/JavaScript)?

There is an existing reference implementation written in Mathematica and it 
appears a port has already been done to Python: 
https://github.com/jrmuizel/pyunum

For more details of unum see
https://www.youtube.com/watch?v=jN9L7TpMxeA
https://www.crcpress.com/The-End-of-Error-Unum-Computing/Gustafson/9781482239867
http://arith22.gforge.inria.fr/slides/06-gustafson.pdf


-- 
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your 
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
--- 
You received this message because you are subscribed to the Google Groups 
"Clojure" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to clojure+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.