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I intend to write an article (including source code) about my implementation of the double-double type (an extended-precision floating-point type, implemented using two 'double's). I have used code written by David Bailey (the QD library) as a starting point, but am adding many features:
* higher precision for trigonometric functions
* better implementation of exponential functions
* implementation of additional functions present in the C++ <math> header
* writing the code in a modern manner (everything in the appropriate namespaces, etc.)
* ...
Would that sort of article be acceptable as a new article, or is it likely to be considered plagiarism?
[Naturally, the non-original parts of the code are acknowledged in the source and in the article.]
If you have an important point to make, don't try to be subtle or clever. Use a pile driver. Hit the point once. Then come back and hit it again. Then hit it a third time - a tremendous whack.
--Winston Churchill
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As long as you give proper attribution, and the original work is open to derivation, I don't see their being any problems.
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OK, thanks.
The article will be posted in a couple of days...
If you have an important point to make, don't try to be subtle or clever. Use a pile driver. Hit the point once. Then come back and hit it again. Then hit it a third time - a tremendous whack.
--Winston Churchill
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What Pete said.
Would't Quadruple be a better name?
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Jörgen Andersson wrote: Would't Quadruple be a better name?
Actually, no.
binary128 (AKA quadruple-precision) is defined in the IEEE-754 Standard for Floating-Point Arithmetic as having 1 sign bit, 15 exponent bits, and 113 mantissa bits (1 bit is hidden). The problem is that no hardware imlementations exist, as yet.
The 'double-double' type uses the sum of two binary64 (AKA double-precision) values to represent a 106-bit value. The advantage is that double-precision is implemented in hardware, and so even though we need more operations - it is still faster than a software implementation of binary128.
I'll stop now, or I might as well write the rest of the article here... 
If you have an important point to make, don't try to be subtle or clever. Use a pile driver. Hit the point once. Then come back and hit it again. Then hit it a third time - a tremendous whack.
--Winston Churchill
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Well then it makes sense.
I could argue, probably in vain, that there is a point in forward compatibility.
But that's for a different article then.
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I'm also working on a software implementation of binary128, but - as you say - that's another article.
[BTW, the 'double-double' idea is not limited to binary64. There is no reason why you couldn't have a 'quad-quad' type that gave you 226 bits of precision...]
If you have an important point to make, don't try to be subtle or clever. Use a pile driver. Hit the point once. Then come back and hit it again. Then hit it a third time - a tremendous whack.
--Winston Churchill
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Looking forward to both of them.
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1) "The Grand Programming Works, Ltd." is it normal nick? Can't it be qualified as a spam?
2) Can we add a link to our website in our articles?
Can't it be qualified as a spam?
Can our account be permanently blocked without any warning?
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The Grand Programming Works, Ltd. wrote: 1) "The Grand Programming Works, Ltd." is it normal nick? Can't it be qualified as a spam?
There are plenty of consultants with the neame of their firm as username. It probably won't be classified as spam.
The Grand Programming Works, Ltd. wrote: 2) Can we all a link to our website in all our articles?
That can classify as site-driving, I think the best thing would be to put your website as the home address in your profile.
The Grand Programming Works, Ltd. wrote: Can our account be permanently blocked without any warning?
Only if you properly spam (i.e. "increase your muscle mass with _magicproduct_").
Geek code v 3.12
GCS d--- s-/++ a- C++++ U+++ P- L- E-- W++ N++ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t++ 5? X R++ tv-- b+ DI+++ D++ G e++>+++ h--- r++>+++ y+++*
Weapons extension: ma- k++ F+2 X
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The Grand Programming Works, Ltd. wrote: Can our account be permanently blocked without any warning?
Yes, but we'd typically warn you.
The Grand Programming Works, Ltd. wrote: "The Grand Programming Works, Ltd." is it normal nick? Can't it be qualified as a spam?
The name is not what defines spam. It's the intent that counts.
Any attempt to market your own site or product under the guise of participation will result in your account being removed.
cheers
Chris Maunder
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Hi All,
I hope you all are fine. I have experience in a third party tool(Jqwidgets JQX grid) . So is it possible to write the article related to the JQX Grid? I heard code project does not support writing more third party articles. Please give me a suggestion so that I can start working on that. Please excuse me if I am wrong. Thanks in advance.
Kindest Regards
Sibeesh Venu
http://sibeeshpassion.com
==================!!!====================!!!========================
So much complexity in software comes from trying to make one thing do two things.
Kindest Regards
Sibeesh
http://sibeeshpassion.com/
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Please don't do that. One of the reasons your last account was de-activated for promoting too many third party products, and your hell-bent determination to post on JQX grid is feeling mighty suspicious to me right now.
Thanks,
Sean Ewington
CodeProject
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Blimey, I just had to authorise that message for you.
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I realize that this response may also have to be authorized, so I will take this opportunity to say "thank you," and also please make sure you keep my on a tight leash 
Thanks,
Sean Ewington
CodeProject
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I'll keep you on a loooong leash...
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Thank you so much. I won't do that then.
==================!!!====================!!!========================
So much complexity in software comes from trying to make one thing do two things.
Kindest Regards
Sibeesh
http://sibeeshpassion.com/
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I would like to post an article that requires posting a modified version of Microsoft run-time code distributed with the VC 6.0 run time source code.
Can someone tell me the rules for posting existing source code that is modified?
Thanks.
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I suspect that would breach Microsoft's copyright and licencing rules. But you should really ask them.
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I submitted about 6 hours ago, an update to the article I wrote, but so far, I don't see it published. Did I miss something? I'm not used to the forms since a long time ago, so, maybe I did miss something.
MFC PowerShells Easily[^]
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There's a review process in place now, for articles. Most articles have to go through this process where we work out whether or not an article is quite up to scratch and point out areas that can be improved if one's not quite to standard. As this is a community effort, it may take some little time.
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Should be good now. Also, I added the PowerShell language tag you were looking for. It is <pre lang="PowerShell">
Thanks,
Sean Ewington
CodeProject
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Hi,
I just posted an article, but didn't find the tag listed in the dropdown box. The only language starting with a 'P' is PHP.
I'm just thinking now, maybe I should change the name in html text. I'm not sure now that the article is already posted.
Thanks.
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We should update that dropdown 
Sorry, what name do you want to change?
Thanks,
Sean Ewington
CodeProject
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