Activity
From 06 Oct 2012 to 04 Nov 2012
31 Oct 2012
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14:17 Feature #92: Error Codes
- Here is note for accumulating ideas for structuring CoCoALib exceptions:
(1) create _CannotDivide_ which has two sub... -
- The main question is precisely when should @IsDivisible@ return false?
Assuming @x,y,z@ are all @RingElem@...
(A)... -
13:34 Feature #248: IsDivisible for RingElem with nice interface
- Currently the function
@bool IsDivisible(ConstRefRingElem num, ConstRefRingElem den)@
returns *false* if den=0.
I ...
26 Oct 2012
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- Updated the doc for RingElem.
Might be necessary to revise the example progs?
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- I have updated the doc for RingElem and friends.
It probably needs some more work, but I'm taking a rest over the we...
24 Oct 2012
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- yes! I'm not sure how easy/difficult it is going to be to group them: looking at the documentation page:
PPMonoid
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- The C++ STL offers a header file *@<iosfwd>@* which contains forward declarations of the types used for input/output ...
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- confirm: all compiles and runs smoothly :-)
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- I have renamed the class @ConstRefRingelem@ into *@RingElemAlias@*, and introduced a new typedef for *@ConstRefRingEl...
22 Oct 2012
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- John Abbott wrote:
> Question: what does this function do to the value in *@r@* if the quotient does not exist?
> 1 t... -
- Suggestion:
We need a function sounding like "myIsTooBigForExponent(EXP)" to be called before ...
20 Oct 2012
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- OK, we can add *@IsDivisible(r, r1, r2)@* as Anna proposes; I'm not convinced it is the best possible interface, but ...
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- All files which exist just for the @CoCoAServer@ should be in the *@src/server/@* directory (rather than @src/Algebra...
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- I ran the (old) benchmark set (inside @src/server/@).
There was *no real difference in speed* between a compilation ...
19 Oct 2012
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- I've added to our CVS the files (files are called Tmp when we have no txt documentation ;-)
* @TmpJBDatastructure.CH@... -
18 Oct 2012
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- The exception catching mechanism in C++ distinguishes the errors based on their types (respecting inheritance relatio...
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- A cheap safety check for exponent overflow would be simply to conduct the check in the @power@ functions for PPMonoid...
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- The real candidates are (B) and (C) -- I interpret these as meaning 16 bits and 32 bits.
Option (A) would limit ex... -
- The C++ type used for represent exponents in powerproducts is defined in the file *@config.H@*. It has to be an unsi...
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- John Abbott wrote:
> It is not really important, but I will mention that in some cases one can test divisibility much...
17 Oct 2012
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- It is not really important, but I will mention that in some cases one can test divisibility much more cheaply than co...
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- Anna's proposal *@bool IsDivisible(r, r1, r2)@* is reasonable and fits in with what we have done in similar cases so ...
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- Maybe we could add the interface *bool IsDivisible(r, r1, r2)* which has a similar feeling to *bool IsInteger(n, x)*....
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- Checking in completed.
Documentation has still to be updated.
15 Oct 2012
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- CVS check-in blocked until new release of CoCoALib has been made.
I'll look at the documentation in the meantime.
14 Oct 2012
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- Try adding (in the right place...)...
12 Oct 2012
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- I have a very strange problem compiling the debug2 version.
(indeed it is not related with debugging at all, but wit... -
- Alessandra reports:
* *@examples/CopyInfo.C@* is not an example -- Anna has added a comment to the file
* incomple...
11 Oct 2012
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- Now we have a git copy of cocoalib to play with.
Moreover I tried to make a new small project (math exercises ;-) ... -
- I have replaced all occurrences of *@RefRingElem@* (usually by *@RingElem&@*),
and made a few scattered minor chang... -
- I have implemented a reasonably clean solution to case *C*; it is exception safe but does make a "wasteful copy".
... -
- The impls for *@ConcatVerImpl::mySetEntry@* are completely general, so move them up to the base class.
10 Oct 2012
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17:22 Support #262: Play with GIT
- I used some of the ideas from
http://undefinedvalue.com/2010/07/02/workflow-remote-cvs-local-git
to use git on my s... -
- Anna & John: Use a temporary copy of CoCoALib to learn the various GIT commands.
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- I have modified the source code in the 4 areas indicated in my previous post. It all compiles and the tests pass.
... -
- I am considering eliminating the type @RefRingElem@. To do this I must find out where the type is used.
The type @R... -
- JAA is currently assessing how useful/necessary @RefRingElem@ is; the hope is that they can simply be eliminated (alo...
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- From studying issue #221 it has become apparent that the role of *@RefRingElem@* needs urgent review.
09 Oct 2012
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- Hensel lifting for univariate GCDs requires a squarefree GCDfree basis.
There is an implementation in @GCDfreeBasis.... -
- In CoCoA-4 there is some rather inefficient code for multivariate lifting. Can it be made more efficient?
In any ... -
- The old CoCoA-4 univariate GCD code should be transcribed into CoCoALib.
It comprises:
* gcd in Fp[x] via standar... -
- [following on from a discussion with Christof]
It does not seem to be possible to allow more than one input expressi... -
- Any progress?
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- JAA proposes the following guideline:
a coefficient is printed between brackets except when:
* the coefficients @+1@...
08 Oct 2012
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- Specify what default grading is.
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- As we did for GMP (see #247)
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- Closed issue #247 has satisfied wish (7).
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- Christof and John looked at various possible printed forms of *@(3-2*x)^5@*...
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- Right now Hilbert series do not exist in CoCoALib.
In CoCoA-5 they are built in the package @hp.cpkg5@.
Now we ne... -
- Don't forget the *@DEBUG2@* setting available in @autoconf.mk@; it activates checking in @MemPool@ managed memory, an...
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