On Tue, Jan 24, 2012 at 12:41 PM, Paul Bowyer <pbowyer at olynet.com> wrote:
>
> I ran the test suite from within xmaxima for sbcl and ccl and
> sbcl fails on rtest16
> ********************** Problem 393 ***************
> Input:
> closeto(zeta(%i + 3) - (1.10721440843141 - .1482908671781754 %i), 1.e-15)
>
>
> Result:
> 3.3157171161039706e-9
>
> This differed from the expected result:
> true
>
> ********************** Problem 394 ***************
> Input:
> ! 1 !
> closeto(!zeta(0.5 %i + -)! - 1.06534921249378, 1.e-14)
> ! 2 !
>
>
> Result:
> 3.1194385963217997e-8
>
I'm pretty sure this is the known issue with sbcl about how it computes
(cl:expt <integer> <double-float>). A bug has been filed, I think, and I
have verbal confirmation that it will be fixed someday. (Ccl used to have
the same problem, but it was fixed a while ago.)
Ray