Activity

From 15 Dec 2015 to 13 Jan 2016

15:41 Feature #839: SparsePolyIter: make more compatible with STL: interesting syntax :-)
looks quite horribly complicated to implement though :-( Anna Maria Bigatti
14:26 Feature #839: SparsePolyIter: make more compatible with STL: Another idea is to have separate iterator types for the coeffs and the PPs; but the problem of not being able to refe... John Abbott
14:23 Feature #839: SparsePolyIter: make more compatible with STL: A possible solution would be to return an "index" which can be converted into a usable value via a memfn of the polyn... John Abbott
14:19 Feature #839: SparsePolyIter: make more compatible with STL: As a quick reminder: the new @for@-loop syntax is like this:... John Abbott
14:11 Feature #839 (In Progress): SparsePolyIter: make more compatible with STL: Mario has suggesting making @SparsePolyIter@ more compatible with C++ (and STL); for instance this would allow use of... John Abbott

15:05 Feature #838: Differential algebra: Werner pointed out that it is (or "can be"?) useful to have an ordering on the derivatives, and that the interesting ... John Abbott
15:00 Feature #838: Differential algebra: More details. My understanding is that there are two types of "variable": independent variables (@x[1]@ to @x[n]@) a... John Abbott
14:16 Feature #838: Differential algebra: Here are some notes following a discussion I had with Werner last week... there may be some mistakes if I have not un... John Abbott
13:43 Feature #838 (In Progress): Differential algebra: Werner has suggested that CoCoA could offer differential algebras.
If I have understood correctly, these are a bit... John Abbott

14:40 Slug #837: factor is very slow on some simple input polynomials: My "fast" machine in Kassel takes more than 60000s for @x^780+780@, and 1333s for @x^988+988@.
In comparison all pol... John Abbott
14:32 Slug #837 (New): factor is very slow on some simple input polynomials: The problem lies in CoCoALib, but for simplicity I present it here as CoCoA-5 code.
@factor(x^780+780)@ is very sl... John Abbott

12:25 Bug #784: threadsafety: Scott Meyers's advice about cached values: I read a bit in Stroustrup C++ book. There I found a method @std::call_once@ (in @<mutex>@). This method could be a n... Mario Albert

16:26 Feature #664 (Resolved): Impl small non-prime finite fields (using logs): I have checked in the code I currently have. no doc, no examples, no tests.
An unofficial, simple example (@Fq4.C@ ... John Abbott

16:25 Design #64: submat takes only vector<long>: John Abbott wrote:
> If we were to adopt the idea of @RowSelect@ and @ColSelect@ then we could offer several signatu... Anna Maria Bigatti
16:07 Design #64: submat takes only vector<long>: If we were to adopt the idea of @RowSelect@ and @ColSelect@ then we could offer several signatures for @submat@:
* @... John Abbott
14:33 Design #64: submat takes only vector<long>: John Abbott wrote:
> Here are some other possible suggestions:
I think that's too many, and I think it's not wort... Anna Maria Bigatti
16:19 Feature #664: Impl small non-prime finite fields (using logs): JAA now has a prototype impl which still needs lots of cleaning, but some simple tests pass :-)
I'm hoping to clea... John Abbott

18:23 Design #64: submat takes only vector<long>: Scott Meyers advises making interfaces which are "easy to use correctly and hard to use incorrectly"; I think this is... John Abbott
18:11 Design #64 (In Progress): submat takes only vector<long>: Here are some other possible suggestions:
* @submat(M, AllRows, ...)@ to select just certain columns
* @submat(M, .... John Abbott
11:42 Design #64: submat takes only vector<long>: I don't think we should allow other integer types, after all we want to discourage other integer types.
One think I ... Anna Maria Bigatti
11:52 Design #825: IsPositiveGrading -- really need 2 signatures?: -- fixed test anna.cocoa5
-- updated CoCoA-5 manual
-- made suggestion for submat ;-) Anna Maria Bigatti

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