CoCoA » CoCoALib

06 Aug 2021

08:44 Feature #1598 (Resolved): RingHom: implement phi(X) as apply(phi, X) also for X vector and matrix

Anna Maria Bigatti

08:44 Feature #1598: RingHom: implement phi(X) as apply(phi, X) also for X vector and matrix

Implemented for vector also in CoCoA-5, where it'll be most useful.
It was much more painful than expected because o... Anna Maria Bigatti

03 Aug 2021

21:26 Design #1606: Return type with const

I have changed all files which obviously need changing (after grepping for a suitable regexp).
It compiles, and all ... John Abbott

14:08 Design #1606 (In Progress): Return type with const

I have modified @BigIntOps@ and everything compiles and runs fine.
John Abbott

11:04 Design #1606 (Closed): Return type with const

While improving/correcting @binomial@ (see issue #1605) I noticed that many functions have a "funny" return type, nam... John Abbott

14:19 Bug #1605 (Feedback): binomial: domain of defn?

Mostly done now.
John Abbott

10:01 Bug #1605: binomial: domain of defn?

John Abbott wrote:
> I have changed the code to use the fully general defn... not really sure why it was not already... Anna Maria Bigatti

11:17 Design #1607 (New): Coding guidelines

I have just found the following link
*https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines*
apparently writ... John Abbott

10:35 Feature #1598: RingHom: implement phi(X) as apply(phi, X) also for X vector and matrix

I have updated *@ValgrindTests.sh@* --now it should give a helpful error mesg when @valgrind@ is not installed (or no... John Abbott

09:45 Feature #1598: RingHom: implement phi(X) as apply(phi, X) also for X vector and matrix

John Abbott wrote:
> I have a prototype for list/vector; not checked, not checked-in.
> Should I check it in? Woul... Anna Maria Bigatti

02 Aug 2021

16:13 Bug #1605 (Resolved): binomial: domain of defn?

I have changed the code to use the fully general defn... not really sure why it was not already so defined.
Changed ... John Abbott

11:59 Bug #1605 (In Progress): binomial: domain of defn?

So the main question is: is it better to allow the fully general definition, or better to "protect the careless user"... John Abbott

11:57 Bug #1605: binomial: domain of defn?

The sample implementations on the Wikipedia page accept all pairs of integers as args, with
the convention that the ... John Abbott

10:27 Bug #1605 (Closed): binomial: domain of defn?

What should the domain of definition of *@binomial(n,r)@* be?
Most restrictive is *@0 <= r <= n@*.
More flexible ... John Abbott

30 Jul 2021

19:31 Feature #1598: RingHom: implement phi(X) as apply(phi, X) also for X vector and matrix

I have a prototype for list/vector; not checked, not checked-in.
Should I check it in? Would you test it?
John Abbott

17:30 Feature #1598: RingHom: implement phi(X) as apply(phi, X) also for X vector and matrix

Added phi(matrix).
Prototype. Not entirely certain with it.
CVS'd Anna Maria Bigatti