Activity
From 07 Sep 2016 to 06 Oct 2016
06 Oct 2016
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11:38 Bug #938: ReadExpr: misreads 2/3^4
- It is a slightly subtle bug: at first sight it seems reasonable that @<constant>^<integer>@ should yield the obvious ...
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- After my change to @ReadExpr@ so that it can read rational numbers, the fn now misreads @"2/3^4"@ and produces 16/81 ...
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08:30 Feature #937 (In Progress): LinDepMill: Mill for linear dependencies
- Currently in MinPoly.C there is a class IncrLinDep.
It is small and neat: I think this is the perfect paradigm for a... -
- John Abbott wrote:
> What exactly do we want to allow in the exponents?
> The simplest solution would be to allow e...
05 Oct 2016
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- The relevant source is around line 100 of @RingElemInput.C@
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- What exactly do we want to allow in the exponents?
The simplest solution would be to allow either an integer liter... -
- The fn @ReadExpr@ fails if input contains an exponent which is not an integer literal: for instance...
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- I'm not sure how related this is: a twin-float value can be printed out with a trailing @<dot>@ if the value is very ...
03 Oct 2016
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- It seems that the weights must be integer. This should be documented!
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- The fns @ElimMat@ and @ElimHomogMat@ should give error if the user supplies weights are not strictly positive (intege...
30 Sep 2016
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- I tried on my old MacBook with g++-4.2, and the results were disappointing. The new class @INDEX@ was significantly ...
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- In the example code above, initially I used the name @index@ for the class (rather than @INDEX@) but that produced st...
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- Here is the test code I have been using: (functional rather than elegant)...
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- For the record, here are the timings I obtained (on the Linux tower in my office):
built-in @IdentityMat@ 1.66s
@Id... -
- I implemented a prototype, and ran a speed test. The results are mixed: usefully faster than current @MachineInt@, b...
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- Advantages:
* One hope is that the simpler implementation may allow the compiler to be clever (and optimise away alm... -
- The implementation of @MachineInt@ is a bit messy as it tries to guarantee that no information will be lost (_e.g._ a...
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- This should be easy once elim orderings are properly implemented, right?
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- Currently there is a single @configure@ script for both CoCoALib and CoCoA-5. Strictly they should be separate.
I... -
- A reasonable solution might simply to be to remove the BOOST dependent code in @ThreadsafeCounter@. This would mean ...
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- As far as I can see, the code in @ThreadsafeCounter@ will probably become much simpler when we switch to C++11 (since...
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- Currently we have a single configuration process (script) for both CoCoALib and CoCoA-5. This is not ideal!
Gereo... -
- An aspect to bear mind if we do opt to become BOOST dependent is that linking would then require linking (first) with...
29 Sep 2016
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- John Abbott wrote:
> Should @ElimMat([1,2,3], 4)@ and @ElimMat([3,2,1], 4)@ give the same result? Why or why not?
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- Should @ElimMat([1,2,3])@ and @ElimMat([3,2,1])@ give the same result? Why or why not?
In other words, does the o... -
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- I'm no longer sure what worried me so much about @ConstMatrixView@; I suspect that the new class @ConstMatrix@ has pr...
24 Sep 2016
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- Make GBasis verbose mode official (both in CoCoALib and CoCoA-5).
Requested by Tetsuo Ida -
- Since we have decided that expressions of the form @1/3*x@ deserve a warning on input, and since with genuine rationa...
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- A polynomial with TwinFloat coeffs does not put the coeffs in brackets....
22 Sep 2016
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- I've written some hasty documentation... it's better than nothing.
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- JAA continues to like the idea of @ConstMatrix@. A nice advantage compared to @ConstMatrixView@ is that an object of...
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- general improvement on coherence and readability of ElimMat and ElimHomogMat (was HomogElimMat)
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- I have not noticed this problem lately. It wouldn't surprise me to find that it is due to the "wobbly" remote file s...
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- removed TmpSmartPtrIRCCOW.H (gave warnings, and it was not used)
I saved a copy called TmpSmartPtrIRCCOW.H.dont-read... -
- when running dependencies there are lots of warnings about boost...
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- Being annoyed by this repeated message (and also thinking of any other Mac user!!) ...
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- Elisa confirmed.
21 Sep 2016
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- Improved documentation about compiling ExternalLibs (after much suffering in recompiling with clang)
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- just simplified CoCoA-5 porting (no longer passing through CoCoALibSupplement)
I'd like to change HomogElimMat into ... -
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- Works fine for me (clang)
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- This has been idle for 6 months; no problems have arisen. I have written a test (checked in).
So closing.
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- I have just written a test (@test-RingAssign1@) which needed to create some DUP rings. I was surprised to discover t...
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- I am closing (rather than rejecting) this issue. Here is a summary:
* throwing an exception is not possible (becaus... -
- Not really important, but it's nicer if the layout is correct.
Something to do when not feeling up to much... :-/
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- I noticed that the layout of the "history" at the bottom of the manual page for @MatrixView@ was incorrect. It is no...
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- After some reflection and after speaking to Anna...
I now think that @MachineInt@ is wrong for indexes; the type @Ma... -
- The function themselves work fine. The discussion now is about the implementation of the bool3 flags, which is a mor...
20 Sep 2016
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- Now I see that issue #830 went ahead even though it is incompatible with #89 and #124.
Oops!
What to do?
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- Evidently I am not fully decided in my own mind whether it better to use @MachineInt@ for safety or @long@ for simpli...
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- This matter has already been rasied in #89 and #124.
Much to my surprise in @matrix.H@ there are several @SetEntry@ ... -
- This is not a bug. The non mem fn @SetEntry@ calls explicitly @myIsWritable@, whereas the mem fn deliberately exclud...
19 Sep 2016
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- Is it possible to have a common interface for bool and bool3? maybe there should only be bool 3, where @uncertain3@ ...
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- In many classes we have some bool/bool3 flags.
Setting a FlagManager class within, could help us keeping the same ki...
16 Sep 2016
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- In the end I chose @CoCoA_ASSERT_ALWAYS@ as it is pretty clear what it means.
I have removed every include directi... -
- John Abbott wrote:
> JAA suggests the short name @CoCoA_CHECK@, but Anna thinks that is not so clear.
> Anna sugges... -
- The implementation now includes an *implicit* check that the ring of the given matrix is char 0; internally it simply...
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- Elisa: do you confirm that you are using the FrobeniusMat implemented in CoCoALib (not the old one in CoCoA-5) and it...
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- After a quick check, it now seems that all code in @MatrixView.C@ should be checked to make sure that it does not att...
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- Closing after 6 months in feedback.
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- Although this possibly already almost finished, I prefer to postpone it since there are some questions still unanswer...
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- No complaints in 3 months ==> closing.
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- This has been resolved adequately by issue #889. Closing.
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- The code in @symbol.C:392@ which would call the NYI fn @ReadSymbolRange@ looks to be wrong to me.
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- There is some initial code for reading a "range" of symbols from a string. This needs to be completed.
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- See @FlagManager@ in #899
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- (I believe we have already written something long these lines, but I cannot find it)
15 Sep 2016
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- JAA suggests the short name @CoCoA_CHECK@, but Anna thinks that is not so clear.
Anna suggests the longer name @CoCo...
14 Sep 2016
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- Since all tests must include @GlobalManager.H@ and that file indirectly includes @assert.H@, there is no need for any...
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- Anna points out that if we do this for @assert.H@ then why shouldn't we do it for all header files... at which point ...
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- The explanation is fairly obvious (and simple): some header files already include @assert.H@. Here is the current li...
08 Sep 2016
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- John Abbott wrote:
> If the flags are simply data members of type @bool3@ then the compiler offers no protection aga... -
- I have a question: I have the function @IsRadicalSPR(const ideal& I)@ which, in the way of determining if I is radic...
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- I'm not sure if this suggestion is a good one or a bad one.
If the flags are simply data members of type @bool3@ t... -
- After speaking to Anna about this yesterday...
It seems best that the flags be assigned to only via specific functio... -
- I suggest to close this issue: the discussion about this design has been moved to issue #899 (my mistake, but difficu...
07 Sep 2016
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- After working on it, I realized that usually the function actually doing the "test" computation is also the function ...
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- Hilbert-driven: to be done. Trivial in principle, probably requires designing the GBMill.
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