oldk1331 wrote:
>
> > I mean text output: diffing output before and after change I
> > see several changes to results of 'mapleok' (those are nastly
> > examples that cross branch cuts).
>
> This patch fixes 'in249a:=integrate((sin(z)/(cos(z)-1))^(1/3), z=
> 0..%pi,"noPole")'
> As for other differences, I shall ask first:
> The "I" in the mapleok.input, means "%i", right?
> I think that should get fixed first.
Original tests come from Vladimir Bondarenko and were in
Maple syntax. In Maple 'I' is imaginary unit. They were
incorrectly translated to Axiom syntax so that 'I' became
just an identifies. I think it makes sense to keep them
that way. Namely, original tests had no parameters and
most of them crosses conventional branch cuts or passed
trough singularites. Definite integrator is supposed
to reject such integrals (giving "potentialPole") and
it seem to do reasonable job. Having 'I' as parameters
made test less singular and more interesting, in particular
for some values of parameter we can get sensible results.
I was thinking about adding variants of tests with '%i'
but at least for now I decided that extra testing for
such variants is not worth extra time spent running tests.
In a sense all those tests could be discarded as wrong
input. But _changes_ of results help discover real
bugs.
--
Waldek Hebisch
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