Activity
From 01 Feb 2014 to 02 Mar 2014
01 Mar 2014
- 10:06 CoCoALib Feature #209: ReadExpr: input polynomials in CoCoALib
- added RingElemInput in documentation (cvs-ed)
(work in progress) - 10:03 CoCoALib Support #452: Documentation for adding functions to CoCoA-5 (BuiltInFunctions and BuiltInOneLiners)
- I added an entry to the CoCoALib documentation. (cvs-ed)
Just started
- 09:31 CoCoALib Support #452 (Closed): Documentation for adding functions to CoCoA-5 (BuiltInFunctions and BuiltInOneLiners)
- Code is very readable, but some documentation would be nice, wouldn't it?
*2014-07* the documentation is in doc/tx...
28 Feb 2014
- 17:10 CoCoALib Feature #426: ConvertTo with optional arg to give more helpful error message
- added example and documentation (cvs-ed)
- 16:30 CoCoALib Feature #426 (Feedback): ConvertTo with optional arg to give more helpful error message
- Jon implemented this and forgot to say it?
anyway it is very nice:
code was... - 15:51 CoCoA-5 Feature #451: Port function NewSymbol/NewSymbols to CoCoA-5
- I think I made a fool of myself: we cannot have anonymous symbols in CoCoA because we do not have symbols. (we just ...
- 15:21 CoCoA-5 Feature #451: Port function NewSymbol/NewSymbols to CoCoA-5
- I'm already writing the code (taking some rust off my C++) and I'll wait for JAA's approval ;-)
- 15:12 CoCoA-5 Feature #451 (In Progress): Port function NewSymbol/NewSymbols to CoCoA-5
- In CoCoALib there are functions for making anonynous symbols (i.e. name of indeterminates).
Should we port them to C... - 11:09 CoCoA-5 Support #369 (In Progress): write documentation for TgCone and other function from the "primary" package
27 Feb 2014
- 09:44 CoCoA-5 Support #450 (In Progress): CoCoA-5.0.9 release (admin, overheads, etc)
- I wonder if the next version should be 5.1 instead of 5.0.4; the reason for the jump is the removal of the keywords *...
26 Feb 2014
- 17:09 CoCoA-5 Support #450: CoCoA-5.0.9 release (admin, overheads, etc)
- Can we complete/close any of these issues?
#20, #32, #78, #94, #104, #197, #200, #204, #216, #239, #322
I'm sure the... - 16:54 CoCoA-5 Support #450: CoCoA-5.0.9 release (admin, overheads, etc)
- Things to do (no special order):
* (@Anna) check the roadmap, and see which tasks we can reasonably complete, and wh... - 16:51 CoCoA-5 Support #450 (Closed): CoCoA-5.0.9 release (admin, overheads, etc)
- Just an issue to gather together all the things to do for the imminent 5.0.9 release.
JAA is hoping the release wi... - 17:01 CoCoA-5 Feature #175: Approximate BuchbergerMoeller: port to CoCoA-5
- JAA should respond!
- 16:48 CoCoA-5 Bug #197: ./C5.bin: fork: Resource temporarily unavailable
- Has this effectively been resolved? It's been ages since I've seen the problem (but I hardly ever use the GUI...)
... - 11:46 CoCoA-5 Feature #414: New fn to increase max recursion depth
- Here is a reason why I prefer a built-in fn for increasing max stack height over a command line option: a user discov...
- 11:18 CoCoA-5 Feature #328 (Feedback): Swap
- I tried swapping two long lists (10000000 entries), and it was pretty quick; so I deduce that the values are not copi...
25 Feb 2014
- 16:11 CoCoA-5 Support #370: OnlineHelp: Problem with "><" in syntax of CartesianProduct
- C5 tells me "no matches" when I ask for *@? ><@*
Is this what we want? [no!]
How to fix it? [don't know] Maybe i... - 15:40 CoCoA-5 Feature #372: add IsFactorClosed
- Implemented in C++ (inside @PPMonoid.H@ and @PPMonoid.C@); it is faster.
Documented.
Also available in C5 now -- remo... - 14:31 CoCoA-5 Feature #328: Swap
- If I remember correctly, the swap above should not make any useless copy (that is, objects should be shared until the...
- 10:58 CoCoA-5 Feature #328: Swap
- *Giovanni* any good hints on how I could implement an efficient @swap@ function in C++ (rather than doing 3 assignme...
- 10:40 CoCoA-5 Feature #414: New fn to increase max recursion depth
- I had suspected as much. Some guys wanted a stack size of about 250000, and asked for a command to increase stack si...
- 10:18 CoCoA-5 Feature #414: New fn to increase max recursion depth
- It's complicated; short answer: a frame needs to "point/reference" other frames for accessing non-local variables (_e...
24 Feb 2014
- 22:42 CoCoA-5 Feature #414: New fn to increase max recursion depth
- I have a first impl, but it SEGVs if I increase the stack size; don't know why.
The CoCoA-5 input is this: (initial ... - 18:20 CoCoA-5 Feature #414: New fn to increase max recursion depth
- Anna said it would be best to keep the change as simple as possible, so it should be a function (since we're not sure...
- 18:15 CoCoA-5 Feature #380 (Closed): Add Frobby functions to cocoa-5
- No complaints from Oscar in 9 months, so presumably all is well. Closing.
- 18:13 CoCoA-5 Feature #372: add IsFactorClosed
- The impl is quite short; move it to C++ (might even be faster?)
- 18:07 CoCoA-5 Feature #212 (Closed): NBM: add to CoCoA-5
- No complaints have come forth, so closing this.
- 18:05 CoCoA-5 Feature #328 (In Progress): Swap
- Added first basic impl to @coclib.cpkg5@.
It should be possible to swap most types of value in C++ without actuall... - 17:49 CoCoA-5 Bug #444: Not keyword/operator
- Old code has been deleted (not yet CVSed though). All still works.
*ANNA* will fix the manual; perhaps separate m... - 17:41 CoCoA-5 Bug #443 (Feedback): lambda keyword
- We have chosen *@Func...EndFunc@* as the best compromise.
Implemented all steps (1)-(4).
Status is now *feedback*
22 Feb 2014
- 11:40 CoCoA-5 Bug #443: lambda keyword
- Here are the steps to make once we have decided what to do:
Step 1: modify interpreter (ought to be very easy, will ... - 10:22 CoCoA-5 Bug #443: lambda keyword
- Being "trivial to implement" is surely a *big advantage*!
I wonder whether @fn...EndFn@ is too short; specifically d... - 11:35 CoCoA-5 Support #439: CoCoA website: download pages and installing instructions
- Some points to clarify on the website:
* what to download and do for a *completely new* installation (CoCoA+emacs)
* ... - 10:58 CoCoA-5 Bug #447: CoCoA-5.0.3 Microsoft std::bad_alloc
- On my portable it gave no problem: just returned the result @ideal()@.
With full debugging I get a failed assertion:... - 10:49 CoCoA-5 Bug #446: intersection fails with zero ideal
- We must remember to add CoCoALib tests for all these "trivial cases" -- they should be in CoCoALib rather than CoCoA-...
21 Feb 2014
- 18:37 CoCoA-5 Bug #444: Not keyword/operator
- Done stage 2. All C5 tests pass. Checked in.
NB old code for @Not@ operator has only been commented out for now... - 16:44 CoCoA-5 Bug #444: Not keyword/operator
- Stage 1 done. About to check in!
- 16:14 CoCoA-5 Bug #444: Not keyword/operator
- There seems to be no doubt that the current @Not@ operator is problematic: even we, the C5 designers, find it "danger...
- 14:50 CoCoA-5 Bug #444: Not keyword/operator
- John Abbott wrote:
> I've just noticed a real howler in @hilop.cpkg5@
> [...]
> which is very different from the orig... - 13:00 CoCoA-5 Bug #444: Not keyword/operator
- A moment's refection about the above howler has put me in panic mode; how come anything works in CoCoA-5???
Should... - 12:57 CoCoA-5 Bug #444: Not keyword/operator
- I've just noticed a real howler in @hilop.cpkg5@...
- 12:39 CoCoA-5 Bug #444: Not keyword/operator
- John Abbott wrote:
> I have just grepped through the C5 packages and there are several places where the operator @No... - 01:29 CoCoA-5 Bug #444: Not keyword/operator
- I have just grepped through the C5 packages and there are several places where the operator @Not@ is incorrectly appl...
- 16:27 CoCoA-5 Bug #443: lambda keyword
- I still vote for (with the great advantage of being trivial to implement ;-)...
- 16:18 CoCoA-5 Bug #443: lambda keyword
- I found this neat little example in a file I was playing with:...
- 16:07 CoCoA-5 Bug #443: lambda keyword
- I forgot to add that if we have a very compact syntax for simple anon fns (single expr) then it is less important to ...
- 16:04 CoCoA-5 Bug #443: lambda keyword
- Here's yet another idea (for simple anon fns), I suppose inspired by TeX.
An anon fn is any expression containing at... - 16:01 CoCoA-5 Bug #443: lambda keyword
- John Abbott wrote:
> Over lunch I made a survey (sample size = 1): -Oscar-Anonymous had no idea ;-)
> My favourite... - 15:50 CoCoA-5 Bug #443: lambda keyword
- Over lunch I made a survey (sample size = 1): Oscar had no idea what a "lambda function" might be (nor indeed what is...
- 15:20 CoCoA-5 Bug #443: lambda keyword
- I prefer a name intstead of the arrow.
So I looked at synonyms: (mind you: I'm joking)
X --> definitely not g... - 13:16 CoCoA-5 Bug #443: lambda keyword
- I've spoken to Anna and she has accepted that having @lambda@ as a keyword in CoCoA-5 is inconvenient. The question ...
- 12:53 CoCoA-5 Design #449 (Closed): Emacs UI: names of emacs fns
- Most emacs variables dealing with the CoCoA5 emacs interface are called @cocoa5-*@ but a few do not begin with @cocoa...
- 12:39 CoCoA-5 Bug #423 (Closed): Emacs UI: semicolon does not work in emacs-24.3
- No problems over the last month (incl. plenty of use).
So closing.
- 12:35 CoCoA-5 Bug #445 (Feedback): EmacsUI: indentation is wrong sometimes (e.g. if Lambda1 is on previous line)
- The change was to @cocoa5-beg-block-re@; I simply added initial @"\\<"@ and final @"\\>"@ -- it seems that they had b...
- 12:18 CoCoA-5 Bug #445: EmacsUI: indentation is wrong sometimes (e.g. if Lambda1 is on previous line)
- I think I have fixed it! :-)
Now the question is how to test it thoroughly?
[answer: a class full of unwitting guine... - 12:16 CoCoA-5 Bug #446: intersection fails with zero ideal
- John Abbott wrote:
> The mem fn @myColon@ is called by @colon@ (see source @ideal.C:280@) which makes a copy of @I@ ... - 11:59 CoCoA-5 Bug #446: intersection fails with zero ideal
- The mem fn @myColon@ is called by @colon@ (see source @ideal.C:280@) which makes a copy of @I@ and then "plays" with ...
- 11:39 CoCoA-5 Bug #446: intersection fails with zero ideal
- I had fixed this kind of problemi in @SparsePolyRing.C@ for colon...
20 Feb 2014
- 00:54 CoCoA-5 Bug #445: EmacsUI: indentation is wrong sometimes (e.g. if Lambda1 is on previous line)
- I've made some quick tests in a buffer associated to @file.cocoa5@.
Adding a *prefix* (comprising letters and/or d... - 00:40 CoCoA-5 Bug #446: intersection fails with zero ideal
- Should there be a separate issue about putting some proper "extreme case" tests for all ideal operations in the stand...
- 00:36 CoCoA-5 Bug #446: intersection fails with zero ideal
- @radical@ seems happy so long as there is at least one non-zero generator.
*However*, @radical(ideal(one(R)))@ gives... - 15:53 CoCoA-5 Bug #446: intersection fails with zero ideal
- Bad news: the problem occurs somewhere inside Max's code :-(
The problem is that @EmbedPolyList@ tries to create ... - 11:46 CoCoA-5 Bug #446: intersection fails with zero ideal
- Same problem with @radical(J)@.
- 11:40 CoCoA-5 Bug #446 (Closed): intersection fails with zero ideal
- The following input wrongly produces an error...
- 15:34 CoCoA-5 Bug #443: lambda keyword
- Here is an example taken from @NotBuiltin.cpkg5@
Current form:... - 10:36 CoCoA-5 Bug #443: lambda keyword
- Other suggestions for the keyword: *@func...EndFunc@*, *@AnonFn...EndAnonFn@*,
*@AnonFunc...EndAnonFunc@*
My firs... - 12:13 CoCoA-5 Support #448: EmacsUI Source/SourceRegion produce warning on Microsoft Windows 7 Ultimate
- The problem was reported by Elisa Businelli (and can be reproduced on her computer).
- 12:12 CoCoA-5 Support #448 (New): EmacsUI Source/SourceRegion produce warning on Microsoft Windows 7 Ultimate
- In side emacs using @send-file@ or @send-region@ issues a CoCoA command using @Source@ and @SourceRegion@ commands se...
- 12:02 CoCoA-5 Bug #447 (Closed): CoCoA-5.0.3 Microsoft std::bad_alloc
- The following input produces a @std::bad_alloc@ exception on Microsoft Windows 7 Ultimate (Service Pack 1) 2009
<pre...
19 Feb 2014
- 21:53 CoCoA-5 Bug #445: EmacsUI: indentation is wrong sometimes (e.g. if Lambda1 is on previous line)
- I think the problem may be in the definition of @cocoa5-beg-block-re@.
I presume the @-re@ suffix means "regular exp... - 21:48 CoCoA-5 Bug #445 (Closed): EmacsUI: indentation is wrong sometimes (e.g. if Lambda1 is on previous line)
- The emacs UI sometimes gets indentation wrong inside a @file.cocoa5@.
The specific case I observed was when the pr... - 21:37 CoCoA-5 Bug #444 (Closed): Not keyword/operator
- The @Not@ operator behaves differently from C4.
In C4 you could write @If Not 1 IsIn I Then ...@
In C5 this is ... - 21:34 CoCoA-5 Feature #347 (Closed): C5 cannot compute derivative of a ratfn
- This has been in feedback for 9 months without any problems, so closing.
- 21:31 CoCoA-5 Bug #443 (Closed): lambda keyword
- I've just resuscitated the eigenvector code.
Having @lambda@ as a keyword is a nuisance, _e.g._ it cannot be used ... - 21:20 CoCoALib Feature #442 (New): Eigenvectors
- Clean up impl of @eigenvectors@ and translate it into C++.
Ideally it should perhaps use algebraic extensions? - 11:32 CoCoA-5 Support #439: CoCoA website: download pages and installing instructions
- Tony should be here in a couple of weeks; maybe we could ask him to help improve the design of the website (by giving...
18 Feb 2014
- 17:17 CoCoALib Bug #413: OrdvArith: use of a single buffer is NOT THREADSAFE
- Thanks Christof for trying the hacked code. I'm both surprised and relieved that there was no significant improvemen...
- 16:11 CoCoALib Bug #413: OrdvArith: use of a single buffer is NOT THREADSAFE
- I tried the change. It is really hard to tell if there is a difference. It seems to be slightly faster on some exampl...
14 Feb 2014
- 10:14 CoCoA-5 Feature #352: Should SourceRegion echo the "region"?
- > I did write the code for emacs so that the sourced lines are printed (commented out), but, of course, this is not s...
13 Feb 2014
- 12:02 CoCoALib Bug #413: OrdvArith: use of a single buffer is NOT THREADSAFE
- Christof could you make some further tests after modifying slightly the OpenMP version of the @OrdvArith@ code I sent...
12 Feb 2014
- 16:30 CoCoALib Feature #342: Remove denominators: QQ[x] -> ZZ[x] (and PushBack(coeff, PP))
- My non-authorative solution is...
- 12:07 CoCoA-5 Feature #352: Should SourceRegion echo the "region"?
- John Abbott wrote:
> I can see what the students of the upcoming Computer Algebra course say about "send region" not ... - 11:56 CoCoA-5 Feature #352 (In Progress): Should SourceRegion echo the "region"?
- I can see what the students of the upcoming Computer Algebra course say about "send region" not copying the region se...
- 12:00 CoCoA-5 Bug #441 (Closed): Emacs UI: C-c C-e does not ignore keywords inside strings
- The emacs key sequence @C-c C-e@ should automatically insert the correct @End...@ keyword to close a syntactical cons...
11 Feb 2014
- 20:10 CoCoALib Feature #440: Port RealRoots to C++
- Make the code prefer "binary rationals" as much as possible; exploit this fact when evaluating the polynomial. In an...
- 20:04 CoCoALib Feature #440 (New): Port RealRoots to C++
- Port the @RealRoots@ code to C++ so that it is accessible to CoCoALib users!
I hope that a well-written port might...
10 Feb 2014
- 12:04 CoCoA-5 Support #439: CoCoA website: download pages and installing instructions
- I wonder if a friendly industrial designer would be able to help. :-)
09 Feb 2014
- 16:52 CoCoALib Support #438: Polynomial multiplication (product of RingElem)
- I am sorry for having raised a non-issue.
Regarding NumTerms: is it a data field of the polynomial or is it compu... - 16:08 CoCoALib Support #438: Polynomial multiplication (product of RingElem)
- Winfried Bruns wrote:
> I think it is a question that needs careful testing before any changes should be done. As ob... - 12:48 CoCoALib Support #438: Polynomial multiplication (product of RingElem)
- I think it is a question that needs careful testing before any changes should be done. As observed by John and mentio...
- 09:50 CoCoALib Support #438 (In Progress): Polynomial multiplication (product of RingElem)
- In @SparsePolyRing.C -- myMul@ there is this code...
08 Feb 2014
- 20:10 CoCoA-5 Support #439 (Closed): CoCoA website: download pages and installing instructions
- [20140208] Tony reported that he found the website quite difficult to navigate, and felt it did not explain clearly p...
- 15:40 CoCoALib Support #438: Polynomial multiplication (product of RingElem)
- [from an email sent to Bruns] I do recall that there are complications for inserting the terms in the correct order; ...
- 15:33 CoCoALib Support #438 (In Progress): Polynomial multiplication (product of RingElem)
- Bruns asks whether @f*g@ and @g*f@ take the same time or whether one way round is better than the other. He mentions...
- 15:18 CoCoALib Feature #437 (In Progress): MemPool: order free blocks?
- Computation speed in C5 often degrades over time; I think this may be due to loss of data locality in the RAM. In an...
- 15:14 CoCoALib Feature #142 (In Progress): Improve threadsafety
- 10:43 CoCoALib Feature #342: Remove denominators: QQ[x] -> ZZ[x] (and PushBack(coeff, PP))
- This function seems to be optimal.
What is the authorative function for the converse transformation ZZ[X] --> QQ[X] ?
07 Feb 2014
- 00:47 CoCoALib Feature #436 (New): Improve UPoly eval at BigRat for binary rational
- It should be possible to make @EvalUPoly@ faster for binary rationals (_i.e._ whose denom is a power of 2)
- 00:44 CoCoA-5 Slug #435 (New): Assignment to protected variable
- The interpreter should check whether LHS is protected *before* trying to evaluate RHS (because evaluation RHS might b...
- 00:41 CoCoA-5 Bug #94: Default reason for protected variables
- I'd like to resolve & close this issue in the near future!
06 Feb 2014
- 14:46 CoCoA-5 Slug #434: Emacs UI: very slow when input file is big (with long lines)
- I created a 3Mbyte file with short lines (100 copies of the code in @radical.cpkg@). There was some slow down, but q...
- 14:22 CoCoA-5 Slug #434: Emacs UI: very slow when input file is big (with long lines)
- The problems of serious slow down occur only when the cursor is towards the end of the file -- response is normal whe...
- 13:49 CoCoA-5 Slug #434 (New): Emacs UI: very slow when input file is big (with long lines)
- Emacs has become very slow as I edit a large (3Mbyte) @file.cocoa5@.
The file contains several quite long lines (u... - 10:23 CoCoA-5 Bug #433: EMACS UI: trouble with sending a long line
- My idea to use @SourceRegion@ has a (minor?) technical problem: it implies that the buffer be saved to the associated...
05 Feb 2014
- 00:06 CoCoA-5 Bug #433 (Closed): EMACS UI: trouble with sending a long line
- Sending a long line to CoCoA-5 inside Emacs does not work: CoCoA gets stuck and simply prints out lots of ^G. I beli...
- 23:55 CoCoA-5 Feature #381: Emacs User Interface: Easier binding for sending a line to cocoa-5
- Could you also define some other key sequences? For instance,
C-c RET
C-c C-RET
The advantage of defining both ...
04 Feb 2014
- 19:42 CoCoALib Bug #413: OrdvArith: use of a single buffer is NOT THREADSAFE
- On our compute server with 20 threads the performance was about 5% better with the OpenMP adaptation for some medium ...
03 Feb 2014
- 18:53 CoCoALib Feature #222: Printing polynomials - spaces between terms
- I notice in @SparsePolyRing.C:551@ that there is a check via @IsPrintAtom@. The documentation says _true iff arg doe...
- 18:24 CoCoALib Feature #222: Printing polynomials - spaces between terms
- In note 6 I unwittingly overlooked some (important?) points: for instance I did not consider compound coefficients in...
- 17:37 CoCoALib Bug #413: OrdvArith: use of a single buffer is NOT THREADSAFE
- CVS
time nmzIntegrate -E CondEffPlurSymm-100
nmzIntegrate -E CondEffPlurSymm-100 218,09s user 0,69s system 385% cpu... - 12:43 CoCoALib Bug #413: OrdvArith: use of a single buffer is NOT THREADSAFE
- OK, I'll try to rewrite it -- maybe even this afternoon while invigilating!
- 11:47 CoCoALib Bug #413: OrdvArith: use of a single buffer is NOT THREADSAFE
- I did some tests and the timings were exactly the same. So I checked again. I only have a version which still include...
- 11:07 CoCoALib Bug #413: OrdvArith: use of a single buffer is NOT THREADSAFE
- Yes, I still have it and will give it a try.
- 15:27 CoCoALib Design #432: Semantics of IsPrintedWithMinus
- Anna rightly asked how should TwinFloats be handled.
Right now, I'm undecided. I'm quite sure that any polynomial... - 12:49 CoCoALib Design #432 (In Progress): Semantics of IsPrintedWithMinus
- If we follow the suggestion in note 6 of issue #222 then we need to define @IsPrintedWithMinus@ only for numerical ri...
01 Feb 2014
- 10:20 CoCoALib Feature #222: Printing polynomials - spaces between terms
- I would prefer a symmetric appearance, either no space around the + sign or a blank on bothsides.
But it is a mat...
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