[petsc-dev] [PATCH] Custom use of complex when not configured for complex

[Matthew Knepley]

On Mon, Sep 10, 2012 at 11:19 AM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> I would like to use complex arithmetic in some code that does polynomial
> optimization in the complex plane (for adaptive smoothers), even when
> PetscScalar is real. I'd like to push something like the attached, but
> since this is potentially fragile, I'm posting here before pushing. Any
> objections to my pushing?
>
> This works with my C and C++ real builds as well as C and C++ complex. I
> also tried a real build that disabled PETSC_HAVE_C99_COMPLEX (because all
> my compilers support it), but of course that's not much of a check.
>
> One thing that I think we could support (because C99 and C++ complex is
> binary compatible) is choosing the complex implementation based on the
> current language rather than PETSC_CLANGUAGE.
>

This looks good to me, but I am confused. What does this diff have to do
with unstructured meshes?

   Matt

-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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