On 9/13/07, Robert Bradshaw <[EMAIL PROTECTED]> wrote:
\> > The patch as written gives the same error.  However if you
> > change line 37 of the patch from
> >      if vx == vy == 0:
> > to
> >      if vy == vz == 0:
>
> Oh, yeah, that's a typo...
>
> There's a new patch up at http://www.sagemath.org:9002/sage_trac/
> ticket/646 that avoids all use of atan.

Cool, applied for sage-2.8.4.2.
Your docstring for the algorithm, and how you use the SAGE
calculus package to get it, is frickin' cool.   We need simplify_*
methods on symbolic matrices...

William
> > (since atan2() is taking arguments vy and vz) then
> > I get a different error on ia64-Linux:
> >
> > sage -t  devel/sage-main/sage/plot/plot3d/plot3d.py
> > **********************************************************************
> > File "plot3d.py", line 19:
> >     sage: S.show()
> > Expected nothing
> > Got:
> >     6.0
> >     <type 'sage.rings.real_double.RealDoubleElement'>
> >     0.0
> >     0.0
> > **********************************************************************
> > 1 items had failures:
> >    1 of   9 in __main__.example_0
> > ***Test Failed*** 1 failures.
>
> I am baffled by the printouts though, do you have access to an
> itanium that I could try this out on to try and see where they're
> coming from?

I don't.  I do have access to an itanium, but when I build SAGE
on it:
  (1) matplotlib won't build (yet), and
  (2) SAGE seriously segfaults on startup
The build tools on that itanium are terrible (gcc-3.2, etc.).
I did build everthing with gcc-4.2.1, but exactly the same
problems occurred.

William

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