[petsc-users] one compilation error in PETSc-dev with enabling GPU and complex number

[Jed Brown]

On Tue, Feb 7, 2012 at 23:18, Barry Smith <bsmith at mcs.anl.gov> wrote:

> I have not tried complex quad precision. If you are right than it may not
> be possible right out of the box with std:complex.    We are not in
>  position to provide a proper complex class for this case (for the same
> reasons I listed before) so if someone wants PETSc with complex quad they
> may have their work cut out for them.


It's spelled __complex128.
http://gcc.gnu.org/onlinedocs/gcc-4.6.2/libquadmath.pdf

Perhaps it's a shame they didn't use C99 complex __float128, but such is
life.
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