Activity
From 24 Apr 2015 to 23 May 2015
22 May 2015
- 18:44 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline
- John Abbott wrote:
> What to do?
> * *(A)* one possibility is to offer a command line arg to @CoCoAInterpreter@ whi... - 18:35 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline
- The CoCoA-5 tests passed with @readline@ active. So I have checked in (to reduce the risk of losing the code).
St... - 18:25 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline
- Compilation of @CoCoAInterpreter@ with require the option @-lreadline@ if the readline library is to be used.
- 18:17 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline
- There is some problem with lines longer than 1023 chars. I think it is an Emacs/comint problem because cutting and p...
- 18:04 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline
- I had to change just one line in @Main.C@ (and add some @#include@ directives).
What to do?
* *(A)* one possibili... - 17:45 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline
- I have an apparently working first prototype :-)
- 16:52 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline
- JAA does not want to make @readline@ mandatory for compiling CoCoALib, nor even CoCoA-5.
So @readline@ will become a... - 16:46 CoCoA-5 Feature #719 (In Progress): Readline: consider creating a textual interpreter with readline
- I have downloaded and built readline-6.3.
Building was non-trivial: by default it compiled 32-bit (not compatible ... - 14:14 CoCoA-5 Feature #720: External libs: specifying I/O streams (initialization?)
- @CoCoAInterpreter@ works just fine because the default streams in @libnormaliz@ are @cout@ and/or @cerr@ which is wha...
- 13:45 CoCoALib Slug #675: Matrix determinant over multivariate poly ring
- A Google search for "division free algorithm for determinant" produces several hits. Possibly something there may be...
- 13:21 CoCoALib Slug #675 (In Progress): Matrix determinant over multivariate poly ring
- I have changed @myDet@ in @DenseMatrix.C@ so that it calls @DetDirect@ only if there are at least 3 indets and the ma...
21 May 2015
- 17:53 CoCoA-5 Feature #720 (New): External libs: specifying I/O streams (initialization?)
- libnormaliz needs to be informed of two output streams: one for logging info (in "verbose" mode), the other for error...
- 17:47 CoCoA-5 Feature #719 (Closed): Readline: consider creating a textual interpreter with readline
- This was discussed in March 2009 via email. I will copy the essence of the messages here.
Christof would greatly ... - 16:02 CoCoALib Bug #666 (Feedback): RatReconstructByLattice fails in some simple cases
- I have added a comment to the documentation.
I discussed with Christof the possibility of throwing an exception wh... - 15:23 CoCoA-5 Bug #713 (In Progress): External libs: interrupting not easy
- It is probably best to KISS: _i.e._ just have a straightforward signal handler which simply sets the flag. If this p...
- 11:57 CoCoA-5 Slug #709: Speed of some Normaliz calls (NmzComputation)
- Attempts to profile the running program on my computer failed :-(
@gprof@ does not work properly in MacOSX, and ther... - 11:34 CoCoA-5 Slug #709: Speed of some Normaliz calls (NmzComputation)
- With Christof we ran a side-by-side comparison (on my machine) with "verbose" activated.
The run under CoCoA-5 was a... - 11:26 CoCoA-5 Slug #709: Speed of some Normaliz calls (NmzComputation)
- On my machine (MacBook Pro with OSX 10.5.8, compiler version 4.2.1)
Normaliz 2.12 took 9mins (about 550s)
CoCoA-5 ... - 11:19 CoCoA-5 Slug #709: Speed of some Normaliz calls (NmzComputation)
- Here is the original Normaliz input file (called @5x5.in@ in their source tree):...
- 11:17 CoCoA-5 Slug #709: Speed of some Normaliz calls (NmzComputation)
- Here is body of the CoCoALib code I used to speed testing in CoCoALib:...
- 11:15 CoCoA-5 Slug #709 (In Progress): Speed of some Normaliz calls (NmzComputation)
- Here is the input I was giving to CoCoA-5...
- 10:54 CoCoALib Feature #718: Insert calls to CheckForInterrupt
- I suggest we keep a log here of the files we have looked at with a view to inserting calls to @CheckForInterrupt@.
- 10:52 CoCoALib Feature #718 (Closed): Insert calls to CheckForInterrupt
- So that interrupts are acted upon we must insert calls to @CheckForInterrupt@ in various places -- principally in loo...
- 09:41 CoCoALib Feature #714 (Resolved): Interrupt mechanism
- I have checked in the impl with both *(A)* and *(B)*.
Then I deleted *(A)* and checked in again. This way I hope *(... - 09:38 CoCoALib Feature #715 (Resolved): RandomSubsetIndices, RandomTupleIndices?
- I have already reported this (and logged time) in issue #622.
I think @RandomSubsetIndices@ is likely to be useful...
20 May 2015
- 20:09 CoCoA-5 Feature #317: BuiltInFunctions: evalArgAsLong
- ... I liked it so much I also changed *RandomTupleIndices*, *IsZeroRow*, *IsZeroCol*.
The code becomes shorter and e... - 19:53 CoCoA-5 Feature #317 (Resolved): BuiltInFunctions: evalArgAsLong
- 19:49 CoCoA-5 Feature #317: BuiltInFunctions: evalArgAsLong
- I have implemented in *Interpreter.C* the function *evalArgAsLong* returning a *long*.
I tested it on the definition... - 19:13 CoCoALib Feature #573: Use symbolic links for external libraries
- John Abbott wrote:
> What is the current status? Has the cleaning been done? It has been working fine for several ... - 17:24 CoCoALib Feature #573 (Feedback): Use symbolic links for external libraries
- What is the current status? Has the cleaning been done? It has been working fine for several months, so changing st...
- 19:12 CoCoA-5 Feature #485 (Resolved): Initialization for CoCoA-5: file init.cocoa5
- 17:31 CoCoA-5 Feature #485: Initialization for CoCoA-5: file init.cocoa5
- Anna Maria Bigatti wrote:
> the general @init@ file now works well.
> I don't think there is a particular need for ... - 19:11 CoCoA-5 Support #717: CoCoAManual: improve part on RINGHOM
- Added *Introduction to RINGHOM* and *Composition of RINGHOM*
- 19:08 CoCoA-5 Support #717 (Closed): CoCoAManual: improve part on RINGHOM
- Improve chapter on RINGHOM
- 19:06 CoCoA-5 Feature #704 (Feedback): rename MinGensGeneral?
- All done: Renamed it *MinSubsetOfGens* and documented
- 18:33 CoCoA-5 Feature #711: External Libs: print credits?
- Now I'm less sure about using a @std::map@ since it might be difficult and/or costly to make it threadsafe.
Probab... - 18:16 CoCoA-5 Feature #711: External Libs: print credits?
- I spoke to Christof about the idea of recording when ext libs are actually used (_e.g._ see my suggestion of counters...
- 17:57 CoCoA-5 Feature #622: New function: RandomSubset
- I have checked in @RandomSubsetIndices@ and @RandomTupleIndices@ (in CoCoALib); also the interface fns in @BuiltinFun...
- 17:20 CoCoA-5 Feature #622: New function: RandomSubset
- John Abbott wrote:
> I have added defns to CoCoALib of @RandomSubsetIndices@ and @RandomTupleIndices@. These names ... - 15:40 CoCoA-5 Feature #622: New function: RandomSubset
- Checked in.
You'll have to remove @interrupt.C@ from @src/AlgebraicCore/Makefile@ until I can check those files in..... - 15:28 CoCoA-5 Feature #622: New function: RandomSubset
- John Abbott wrote:
> Where should the new functions go?
>
> Currently they are in a new file @combinatorics.C@ be... - 15:22 CoCoA-5 Feature #622: New function: RandomSubset
- Where should the new functions go?
Currently they are in a new file @combinatorics.C@ because I could not see any ... - 13:50 CoCoA-5 Feature #622: New function: RandomSubset
- I have added defns to CoCoALib of @RandomSubsetIndices@ and @RandomTupleIndices@. These names are very long :-/
N... - 12:48 CoCoA-5 Feature #622 (Feedback): New function: RandomSubset
- 12:04 CoCoA-5 Feature #622: New function: RandomSubset
- documentation done (and cvs'ed)
When we implement the "Indices" in CoCoALib we'll remove them from "NotBuiltin".
... - 11:41 CoCoA-5 Feature #622: New function: RandomSubset
- I added to NotBuiltin.cpkg the functions...
- 10:38 CoCoA-5 Feature #622: New function: RandomSubset
- I suggest having also @RandomTuple(n,r)@ which is indeed pretty simple: in CoCoA...
- 15:42 CoCoA-5 Bug #716: NotBuiltin.cpkg5: indent for MODULE
- John Abbott wrote:
> On line 126 when @indent@ prints out a submodule, it prints out the letter @F@ (in a string). ... - 15:19 CoCoA-5 Bug #716 (In Progress): NotBuiltin.cpkg5: indent for MODULE
- On line 126 when @indent@ prints out a submodule, it prints out the letter @F@ (in a string). Is this right? I supp...
- 13:10 CoCoA-5 Support #548 (Resolved): Printing rings with ID
- John Abbott wrote:
> I think it has just been forgotten; it seems like a good idea to me. Indeed now that direct pr... - 12:47 CoCoALib Feature #715 (Closed): RandomSubsetIndices, RandomTupleIndices?
- In CoCoA we have *RandomSubsetIndices, RandomTupleIndices*.
Could they be useful in CoCoALib?
If so implement trans... - 12:38 CoCoALib Feature #714: Interrupt mechanism
- John Abbott wrote:
> Is there any sense in offering approach *(A)*? Perhaps it is best to offer just *(B)*, and add ... - 12:21 CoCoALib Feature #714: Interrupt mechanism
- I am undecided about which ways to offer for telling the GlobalManager which interrupt flag to watch:
* *(A)* specif... - 12:34 CoCoA-5 Support #616: Release: CoCoA-5.1.2
- First run of...
- 10:22 CoCoALib Slug #675: Matrix determinant over multivariate poly ring
- in the cocoa manual there is this example...
19 May 2015
- 17:55 CoCoALib Feature #714: Interrupt mechanism
- Also seems to work with the C5 GUI now :-)
- 16:56 CoCoALib Feature #714 (In Progress): Interrupt mechanism
- I have implemented a first version following the outlines given above.
It seems to pass a quick test -- I have mad... - 11:41 CoCoALib Feature #714: Interrupt mechanism
- Here is a further complication: how to handle several libraries together?
Let us suppose that CoCoALib has a mechani... - 10:16 CoCoALib Feature #714: Interrupt mechanism
- There is a slight risk in my proposal above. If @SignalInterrupt@ is called asynchronously while @CheckForInterrupt@...
- 10:09 CoCoALib Feature #714: Interrupt mechanism
- As far as CoCoA-5 is concerned CoCoALib is "external software", and the problem noted in #713 applies as much to CoCo...
- 10:04 CoCoALib Feature #714 (Closed): Interrupt mechanism
- Add an interrupt mechanism to CoCoALib.
- 17:24 CoCoA-5 Feature #652: Flag to enable/disable printing of list of loaded packages
- The C5 GUI still prints out the packages as they are loaded. Fix!
- 13:38 CoCoA-5 Feature #711: External Libs: print credits?
- I think that @Banner.C@ is a reasonable place to put it. I have cleaned up the code slightly; it now also prints out...
18 May 2015
- 21:35 CoCoA-5 Bug #713: External libs: interrupting not easy
- GNU has some useful looking documentation:
@http://www.gnu.org/software/libc/manual/html_node/Signal-Sets.html#Signa... - 21:09 CoCoA-5 Bug #713: External libs: interrupting not easy
- I am considering the following behaviour:
* each time ctrl-C is received a counter is increased
* if the CoCoA inte... - 21:01 CoCoA-5 Bug #713: External libs: interrupting not easy
- I have found this web page which gives some advice:
@http://stackoverflow.com/questions/103280/portable-way-to-catch... - 16:31 CoCoA-5 Bug #713: External libs: interrupting not easy
- Christof has tried some experiments with GAP, and he noticed that a single ctrl-C appeared to do nothing, but 2 ctrl-...
- 16:25 CoCoA-5 Bug #713: External libs: interrupting not easy
- Another possible (simple) approach is to offer a command line flag which stops @CoCoAInterpreter@ from intercepting s...
- 15:44 CoCoA-5 Bug #713: External libs: interrupting not easy
- Perhaps the best solution would be to leave the code as it is, and to write better documentation. After all a call t...
- 15:42 CoCoA-5 Bug #713: External libs: interrupting not easy
- Remember that a (portable) signal handler cannot do much.
Christof was puzzled when running some Normaliz tests th... - 15:35 CoCoA-5 Bug #713 (Closed): External libs: interrupting not easy
- @CoCoAInterpreter@ intercepts @SIGTERM@ signals; this means that a long computation happening inside an external lib ...
- 17:14 CoCoA-5 Bug #698 (Resolved): Emacs UI: problems with packages on windows
- John Abbott wrote:
From issue #699:
<quote>
JAA notes that Emacs lisp has the built-in variable system-type whic... - 17:10 CoCoA-5 Bug #699 (Rejected): Emacs UI: set back "cocoa5-executable" to "CoCoAInterpreter"?
- 16:57 CoCoA-5 Support #706 (Resolved): meaningful error for IDEAL <= IDEAL
- Done.
- 15:24 CoCoA-5 Bug #712 (In Progress): External Libs: missing dependencies in Makefiles
- The CoCoALib binaries related to Normaliz (_e.g._ *@ExternalLibs-Normaliz.o@*) do not depend on the Normaliz source f...
- 15:20 CoCoA-5 Feature #708: ExternalLib Normaliz: verbose flag?
- Christof says that Normaliz uses a @bool@.
Should CoCoALib simply follow what Normaliz does for its normaliz relat... - 15:02 CoCoA-5 Feature #711: External Libs: print credits?
- Anna Maria Bigatti wrote:
> Done in init.cpkg5.... but that's not good: it does not see the "--no-preamble" flag :-(... - 12:21 CoCoA-5 Feature #711: External Libs: print credits?
- We would like authors to cite CoCoA when they use in the their research. Presumably then they should also cite any e...
- 12:12 CoCoA-5 Feature #711 (In Progress): External Libs: print credits?
- Done in init.cpkg5.... but that's not good: it does not see the "--no-preamble" flag :-(
undoing it.
- 11:11 CoCoA-5 Feature #711: External Libs: print credits?
- I propose printing out a message about external libraries at the same time as the banner is printed out -- and the me...
- 11:05 CoCoA-5 Feature #711: External Libs: print credits?
- One piece of software printed out a message every time a Normaliz function was called: this produced thousands of mes...
- 10:59 CoCoA-5 Feature #711 (Closed): External Libs: print credits?
- At the Normaliz workshop I noticed that two other pieces of software printed out "credits" when external libraries we...
- 12:16 CoCoALib Feature #222: Printing polynomials - spaces between terms
- This issue has been idle for another year.
- 10:38 CoCoA-5 Feature #700: Which external libs are present?
- It would also be nice if there were an indication of which version of each external library is present. The ability ...
17 May 2015
- 10:33 CoCoA-5 Slug #709: Speed of some Normaliz calls (NmzComputation)
- *TO DO* JAA can try the same computation but from CoCoALib; perhaps some time is spent converting to CoCoA-5 data str...
- 10:17 CoCoA-5 Slug #709 (In Progress): Speed of some Normaliz calls (NmzComputation)
- JAA has done a few speed comparisons between calling @normaliz@ directly from the command line and calling @NmzComput...
- 10:31 CoCoALib Design #710: Update normaliz interface?
- The revised @normaliz@ interface aims to be backward compatible.
JAA prefers the new names in @normaliz@, and woul... - 10:29 CoCoALib Design #710 (In Progress): Update normaliz interface?
- Normaliz is about to release version 3.0.
This has a revised interface (_e.g._ new names for certain existing feat... - 10:27 CoCoALib Feature #253: W.Bruns's wish list
- Can we finish this issue in the near future?
- 10:12 CoCoA-5 Feature #708: ExternalLib Normaliz: verbose flag?
- Some ideas are:
* a global flag which says what the default verbosity is
* an optional arg to calls to Normaliz whi... - 09:55 CoCoA-5 Feature #708 (Closed): ExternalLib Normaliz: verbose flag?
- Is it possible to make Normaliz be verbose from the CoCoA-5 interface?
Christof says he/they often find it help to s... - 09:51 CoCoA-5 Feature #700 (Feedback): Which external libs are present?
15 May 2015
- 19:28 CoCoALib Design #683 (Resolved): Module index component in internal compressed representation
- tested both with @unsigned int@ and @unsigned char@: it works!!...
- 18:43 CoCoALib Design #683: Module index component in internal compressed representation
- Bug probably found.... my fault
John has implemented in GBEnv.C... - 19:11 CoCoALib Design #707 (In Progress): MatrixOrderingMod32749Impl: test and write documentation!
- Some notes:
In @OrdvArith.H@ there is this comment:... - 18:47 CoCoALib Design #707 (In Progress): MatrixOrderingMod32749Impl: test and write documentation!
- 32749 is the biggest prime with some guarantee for <I-cant-remember-what>, so the order matrix is actually over ZZ/(3...
- 15:51 CoCoALib Bug #705 (Feedback): DetDirect calls myAddMul with 0 argument -- funny compilation problem??
- I still don't understand why it seemed to work (maybe a missing cvs checkout)
The problem is a simple (when you know ... - 12:28 CoCoALib Bug #705 (Closed): DetDirect calls myAddMul with 0 argument -- funny compilation problem??
- with (CoCoA-5) input:...
- 14:01 CoCoA-5 Support #706 (Closed): meaningful error for IDEAL <= IDEAL
- CoCoA-4 had the syntax @I <= J@ which is now computed via @IsContained(I, J)@.
Investigate on how to return a meanin... - 11:27 CoCoA-5 Feature #704 (Closed): rename MinGensGeneral?
- there are two functions: *MinGens* (for homogeneous case) and *MinGensGeneral* (trivial algorithm for non homogenous ...
- 11:03 CoCoA-5 Feature #466 (Feedback): CoCoAManual: add entry summarising syntax of all CoCoA-5 commands
- Anna Maria Bigatti wrote:
> Added entry "All CoCoA Commands".
> It only gives the list of entries with type "comman... - 10:55 CoCoA-5 Bug #643 (Feedback): GenRepr fails if there are zero generators
- Done (hilop.cpkg5)
- 09:12 CoCoALib Design #703 (New): Add more operations between modules (CoCoALib)
- Add more module operations: +, colon, ...
(there are also some operations for modules in CoCoA-5 packages)
The ma... - 09:05 CoCoA-5 Feature #702: Add more operations for modules
- Add more module operations: +, colon, ...
Not much to do for CoCoA-5: most of the work is proper design in CoCoALib. - 09:03 CoCoA-5 Feature #702 (New): Add more operations for modules
13 May 2015
- 17:59 CoCoALib Feature #658: Indets actually in a poly (or vector or matrix)
- An advantage of @vector<bool>@ is that it avoids the problem/incompatibility of indices in C++ starting from 0 (both ...
- 17:20 CoCoA-5 Feature #700: Which external libs are present?
- JAA and AMB think that there is little need to have a similar function in CoCoALib since there are the CPP defines @C...
- 16:41 CoCoA-5 Feature #700: Which external libs are present?
- Done.
Just fiddling with the string returned by... - 12:09 CoCoA-5 Feature #700: Which external libs are present?
- Some ideas:
* a function @ExternalLibs@ which returns a list of strings
* a function @HaveExternalLib@ which expect... - 12:08 CoCoA-5 Feature #700 (Closed): Which external libs are present?
- It might be nice to have a way in CoCoA-5 to know which external libs are actually present.
- 14:40 CoCoALib Slug #701: Makefile; limit dependencies on external libs
- This issue is not so important (hence priority *low*); not even sure it is worth fixing, as it may complicate the bui...
- 14:37 CoCoALib Slug #701 (Rejected): Makefile; limit dependencies on external libs
- If you have CoCoALib already (configured and) compiled, and want to repeat compilation but also including an external...
12 May 2015
- 18:20 CoCoA-5 Bug #699: Emacs UI: set back "cocoa5-executable" to "CoCoAInterpreter"?
- John Abbott wrote:
> JAA notes that Emacs lisp has the built-in variable *@system-type@* which gives information abo... - 17:13 CoCoA-5 Bug #699: Emacs UI: set back "cocoa5-executable" to "CoCoAInterpreter"?
- JAA notes that Emacs lisp has the built-in variable *@system-type@* which gives information about which OS is running...
- 17:09 CoCoA-5 Bug #699: Emacs UI: set back "cocoa5-executable" to "CoCoAInterpreter"?
- Anna Maria Bigatti wrote:
> So, we cannot remember why we did this change: probably to allow spaces in path.
We r... - 16:47 CoCoA-5 Bug #699 (Rejected): Emacs UI: set back "cocoa5-executable" to "CoCoAInterpreter"?
- In earlier versions @cocoa5-executable@ was @CoCoAInterpreter@.
Now it is the script @cocoa5@ (and this caused prob... - 15:36 CoCoA-5 Bug #698: Emacs UI: problems with packages on windows
- The problem was solved and tested on a student's computer.
It is enough to add one line in the file *<cocoadir>/emac... - 15:29 CoCoA-5 Bug #698 (Closed): Emacs UI: problems with packages on windows
- The recent installation of CoCoA for the Computer Algebra course in Genoa showed a problem on Windows in finding pack...
11 May 2015
- 17:54 CoCoALib Feature #623 (Closed): Inverse of a matrix over ZZ
- Done.
If the matrix is over an IntegralDomain then it is mapped into FractionField.
Then the inverse is mapped back... - 16:05 CoCoALib Feature #625 (Closed): NumTheory: sieve of Eratosthenes
- Anna says OK for the name -- hard to find a shorter name which is clearer.
I have clarified the manual.
Closing.
- 16:02 CoCoALib Bug #631: Ambiguous: rank for matrix (in ex-matrix1.C)
- I noticed that some of Christof's code uses @rank@; I have written to him asking whether it would be resaonable to ch...
- 15:32 CoCoALib Bug #631 (Feedback): Ambiguous: rank for matrix (in ex-matrix1.C)
- I think everything has now been done.
- 14:43 CoCoA-5 Bug #697 (Closed): Interpreter: Avoid outputting an empty line after each line of input
- CoCoA-5 prints an empty line after each input line which outputs nothing.
Might be related to the fact that standa... - 14:07 CoCoALib Support #604 (Closed): Release: CoCoALib-0.99535
10 May 2015
- 20:02 CoCoALib Feature #625: NumTheory: sieve of Eratosthenes
- Currently the function is called @eratosthenes@; is there a better name?
The doc needs slight clarification @erato... - 16:03 CoCoALib Feature #625: NumTheory: sieve of Eratosthenes
- Can we close this?
09 May 2015
- 15:48 CoCoALib Feature #678: Accumulator (like a geobucket)
- The implementation will almost surely be best done via mem fns since the actual inner working of an "accumulator" wil...
08 May 2015
- 13:32 CoCoA-5 Feature #622 (In Progress): New function: RandomSubset
- Following CoCoALib conventions the return type should be @vector<long>@.
What should the values in the vector be? ... - 11:58 CoCoALib Feature #215: Janet Bases: check and include code in CoCoALib (first prototype)
- This issue has status @Feedback@ but the percent done is just 20%.
What is the actual status? Should this issue be ... - 11:50 CoCoALib Bug #15: Adjoint of a non-invertible matrix
- I have implemented a first version of @AdjByDetOfMinors@; it may already be obsolete because I have also implemented ...
- 11:39 CoCoALib Support #696 (Closed): test-OrderedRing: activate or eliminate?
- There is a file @test-OrderedRing1.C@ which is not actually executed.
Either fix it so that it works (currently fail... - 11:37 CoCoALib Support #695: Remove cruft from test files
- Commented out code could make sense in the following cases:
* the test is valid, but the relevant CoCoALib code is N... - 11:34 CoCoALib Support #695 (New): Remove cruft from test files
- Several test files contain commented out code; this should either be removed or made active (or perhaps add a clear c...
- 11:32 CoCoALib Support #694: In test files: when is assert.H needed?
- Actually I am rather surprised that it is not necessary for all tests.
Investigate why it works without explicitly... - 11:30 CoCoALib Support #694 (Closed): In test files: when is assert.H needed?
- Some test files explicitly include @CoCoA/assert.H@ but many do not.
Check that it is truly needed when it is pres... - 11:28 CoCoALib Design #642 (Resolved): Move code in test file into namespace CoCoA
- JAA has finished all test files. Will check-in, then we can verify on several platforms that all is well.
- 11:26 CoCoALib Feature #623: Inverse of a matrix over ZZ
- Here is an invertible 3x3 matrix...
- 11:21 CoCoA-5 Feature #652: Flag to enable/disable printing of list of loaded packages
- The excesive verbosity has arisen again: @Rank@ was exported from 2 packages (@BackwardCompatible@ and @obsolescent@)...
- 09:15 CoCoALib Support #621: Release: CoCoALib-0.99536
- generated cvs log...
07 May 2015
- 16:57 CoCoALib Design #642: Move code in test file into namespace CoCoA
- JAA has now done @test-[J-Q]*.C@ and @test-[a-h]*.C@
- 15:36 CoCoALib Bug #693 (Closed): Makefile_dependencies in src/tests/
- The file @src/tests/Makefile_dependencies@ seems to be suspiciously simple. Either it is wrong or it is pointless. ...
- 13:50 CoCoALib Feature #520: Compute inverse in quotient ring (i.e. division in algebraic extn)
- Anna Maria Bigatti wrote:
> - when @IsZeroDivisor@ is called and should return @false@ then its ring is not integral...
04 May 2015
- 15:43 CoCoA-5 Support #692: Local variables hiding out ones at top level
- In the example given I note that @x@ is actually a *protected* variable -- perhaps even more reason for a warning?
- 15:11 CoCoA-5 Support #692 (Rejected): Local variables hiding out ones at top level
- In function definitions local variables hiding outer ones are signalled by a Warning.
At top level not. This might ...
30 Apr 2015
- 10:07 CoCoALib Feature #520: Compute inverse in quotient ring (i.e. division in algebraic extn)
- Also @x/i@ is working now.
(will cvs it this afternoon) - 07:38 CoCoALib Feature #385: Design new errors using inheritance
- ...
29 Apr 2015
- 19:03 CoCoALib Feature #520: Compute inverse in quotient ring (i.e. division in algebraic extn)
- Polishing up all the code is always long and tedious....
Anyway!
The code is there and it works.
I still have prob... - 15:46 CoCoALib Slug #691 (In Progress): Matrix determinant over ZZ
- Hint: @DenseMatrix.C:462@ the dispatch function @DenseMatImpl::myDet@ does not handle matrices over ZZ specially -- t...
- 11:33 CoCoALib Slug #691: Matrix determinant over ZZ
- Just as a speed comparison reference I computed @3^(3^17)@ on both machines:
* old G4 took about 50s (on battery pow... - 11:22 CoCoALib Slug #691: Matrix determinant over ZZ
- I've just tried a 1000x1000 matrix: the old G4 took about 550s, my newer MacBook Pro took 1400s. Embarrassing!
*NOT... - 10:32 CoCoALib Slug #691: Matrix determinant over ZZ
- What?!? My dad's ancient iBook G4 is just as fast as my much newer MacBook Pro???
Something must be seriously wro... - 10:31 CoCoALib Slug #691 (Closed): Matrix determinant over ZZ
- I tried computing the following:...
24 Apr 2015
- 17:59 CoCoA-5 Feature #622: New function: RandomSubset
- Let's start with just yours, for many reasons:
- it is simpler, as you said
- indeed that's also what I needed ;-)
... - 11:23 CoCoA-5 Feature #622: New function: RandomSubset
- We could simply have both; that way the user can choose which is more convenient (or efficient).
If we do choose t... - 11:20 CoCoA-5 Feature #622: New function: RandomSubset
- I wanted a @RandomSubset@ function which generated a random subset of @1..n@ of cardinality @r@. I was surprised whe...
- 11:34 CoCoA-5 Feature #531: Package protected variables should know which package protected them
- I do find it annoying when CoCoA says that name @XYZ@ is a package-exported variable but then does not tell me which ...
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