On Sun, Mar 16, 2025 at 04:42:11PM +0100, Waldek Hebisch wrote:
> On Sun, Mar 16, 2025 at 03:31:43PM +0100, 'Ralf Hemmecke' via FriCAS -
> computer algebra system wrote:
> > Wait, something must be wrong with my thinking. How would otherwise
> > getCache()$SortedCache(Kernel(AlgebraicNumber)) still return the empty list
> > although I clearly have created an element of Kernel(AN) in (2) above?
>
> AFAICS this is really Kernel(Expression(Integer)). They share
> representation, so in many case it does not matter if it
> is Kernel(AlgebraicNumber) or Kernel(Expression(Integer)). But
> it matters for cache. And once you mix kernels from two caches
> you may get weird results.
>
> ATM I do not have good solution to this. Correct solution would
> probably remove all traces of Kernel(AlgebraicNumber) from
> algebra code, but currently it is used in several important
> operations.
I have now removed most uses of Kernel(AlgebraicNumber). But
remaining ones (in AlgebraicNumber) are more tricky: if I remove
several exported functions and no longer export ExpressionSpace,
then AlgebraicNumber compiles, but lacks important
functionality.
--
Waldek Hebisch
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