as a test...
Does As a test, you can calculate ··· to be taken literally, or should it be inferred that it is to be the test? The underscoring was added by me. -- Gerard Schildberger (talk) 01:47, 11 May 2016 (UTC)
- Perhaps this is misleading. It certainly should not be the only test.
- Uncertain about that - ideas?
In the task's requirements, it's mentioned that N is an integer. If N is negative, it means that the resultant root is the reciprocal of the abs(N)th root. Is this the intent of the task? -- Gerard Schildberger (talk) 01:56, 11 May 2016 (UTC)
- I would change that to "non-negative integer".
In the interim, for the REXX computer language entry, I used a general-purpose integer root (of any number) which bypasses the problem of multiplying a number by a gihugeic number to get around the problems with handling a decimal fraction. The numbers being passed to the iRoot function could mimic the suggested method if required.
principal Nth root
- That is in fact what I meant. How do I sign my comments?
could the task description be made nicer?
- A usual way to deal with dense description is to show an example. Another is to describe it from a different perspective, or a second time, consciously choosing different words (some tasks here go overboard and specify specific algorithms - sometimes to the detriment of the task, but that's another issue). If that gets too involved, another variant includes a reference to some off-site material (often we use wikipedia). Many tasks here include specific cases - in fact, many tasks require specific examples be illustrated for some more general code. --Rdm (talk) 05:48, 11 May 2016 (UTC)
- I think the precision is already specified. It is to the nearest integer. The Python example demonstrates that integer values are sufficient to emulate real numbers. The trick with square roots is to multiply the number by 100 for every additional digit of accuracy after the decimal point. For a 7th root you would multiply by 10,000,000 for every additional digit of accuracy. Zelah (talk) 06:07, 11 May 2016 (UTC)
is it possible to fix "R^N=X" in the task description?
- It looks like math markup is having some problems, when I try it out. You probably can use that approach but it will probably take some fiddling. --Rdm (talk) 11:27, 12 May 2016 (UTC)
- Ok, I have a theory why it is failing. Chrome doesn't support MathML (I've also tried with another WebKit browser called Vimb). So the fallback image is used. But for some reasons (I guess caching due to Cloudfare) it isn't shown. But the direct link to the fallback image should work: http://rosettacode.org/mw/index.php?title=Special:MathShowImage&hash=b6db46185bb825b2df70bfd507239446&mode=mathml
- I had another caching issue yesterday when I fixed an overwritten example output image. The task page where the image was included still showed the wrong image. But today everything was alright.
- So if my theory is correct, you should see the fallback image in a few hours. If not, something else is wrong. --Andreas Perstinger (talk) 19:31, 12 May 2016 (UTC)
- You could use the × symbol, it's not quite a large at the cross-product glyph, but it's more accurate. There is a similar character ⨯ at U+2A2F, but this is not always considered identical to U+00D7, as U+2A2F is intended to explicitly denote the cross product of two vectors (last sentence as quoted in full from Wiki: Multiplication sign). I like the expression (for the exponentiation) 1002000 or 1002,000 better though. I.E.: X=2×1002,000 or, for ease of reading: X=2×1002,000 -- Gerard Schildberger (talk) 19:30, 16 May 2016 (UTC)
if we have successfully moved to the new task page...
- Did you want to include a suggestion about representing a lot of digits? Or is that now silly? --Rdm (talk) 21:55, 15 May 2016 (UTC)
- Sorry. We could require more significant digits than is usually representable by floating point numbers if that is what you mean. You could change the task description if that seems like a good idea. I don't really know how we reach a consensus on such changes but it would definitely be okay with me. I believe the only affected solution would be the first Go language entry. Zelah (talk) 03:37, 16 May 2016 (UTC)
Perl 6 example
- The version of Perl 6 on IDEOne is ancient, pre-pre-alpha. For what it is worth, all that needs to change to make it work there is to expand the unicode sequence operator (…) in line 10 to its ASCII equivalent (...). See https://ideone.com/dUbfhi with the change applied. --Thundergnat (talk) 00:39, 17 May 2016 (UTC)