On Mon, Mar 06, 2023 at 12:15:40PM -0800, 'Nasser M. Abbasi' via FriCAS -
computer algebra system wrote:
> Here is the first. Please note CAS integration tests uses sagemath for all
> the tests
> If you think this is sagemath bug, I can report it
>
> >sage
> ┌────────────────────────────────────────────────────────────────────┐
> │ SageMath version 9.8, Release Date: 2023-02-11 │
> │ Using Python 3.11.1. Type "help()" for help. │
> └────────────────────────────────────────────────────────────────────┘
> sage: var('x')
> x
> sage: integrate(x*(1-x)^2014,x,algorithm="fricas")
>
> Gives
>
> File ~/TMP/sage-9.8/src/sage/interfaces/fricas.py:1313, in
> FriCASElement._parse_and_eval(s, start)
> 1310 a += 1
> 1312 if s[a] == FriCASElement._LEFTBRACKET:
> -> 1313 return FriCASElement._parse_list(s, start=a)
> 1314 elif s[a] == FriCASElement._STRINGMARKER:
> 1315 return FriCASElement._parse_string(s, start=a)
>
> RecursionError: maximum recursion depth exceeded
> ---------------------------------------------
This looks like sage interface error.
> Here is the second one
>
> sage: integrate(x*(1-x)^2020,x,algorithm="fricas")
Te same.
> The third gives zero, due to a check in place which checks for this due to
> earlier
> problems with Fricas giving zero on integrals which it should not (may be
> you remember this)
Yes.
> the test flagged this as failed. I can fix this.
>
> The next one
>
> sage: integrate(sin(101*x)*sin(x)^99,x,algorithm="fricas")
> Failed due to timeout. I did not check the rest, but timeout must be the
> same reason.
Yes, this one (and other timeouts) is FriCAS weakness. I mentioned it
as one that should be improved. But now marking it as failure
is right thing to do.
--
Waldek Hebisch
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