[Ecls-list] trouble building Maxima w/ ECL

[Robert Dodier]

Here is my previous message about errors in rtest16.

On 6/21/10, Robert Dodier <robert.dodier at gmail.com> wrote:
> On 6/21/10, Robert Dodier <robert.dodier at gmail.com> wrote:
>
>> OK, thanks. I updated ECL and built Maxima successfully.
>> The test suite has several failures in rtest16, several having to
>> do with power series and a few with numerical evaluation of the
>> zeta function.
>
> I looked at the powerseries errors a little bit.
> Looks like the problem is the treatment of special variables
> in src/series.lisp, in particular VAR (I don't know if other variables
> are causing trouble too). VAR is also a special variable in
> src/schatc.lisp (pattern matching code). Calls to M1 in src/schatc.lisp
> seem to get messed up because VAR has the wrong value.
>
> If I load src/series.lisp into Maxima + ECL, so I guess it is interpreted,
> then powerseries works as expected.
>
> An example for which powerseries fails is powerseries(1/(1 - x)^2, x, 0).
> The expected result is 'sum((i1 + 1)*x^i1, i1, 0, inf).
> Maxima + ECL says "Unable to expand"; this is a result of the
> failed pattern matching.
>
> It is certainly true that Maxima's extensive use of special variables
> is a disaster, but anyway the code should work as it stands.
>
> I don;t remember if calls to powerseries worked before, or if this
> is an old bug.
>
> best,
>
> Robert Dodier
>