[petsc-dev] [petsc-maint #129715] __float128 complex

[Barry Smith]

    The f2cblaslapack is generated by the script bin/maint/toclapack.sh   from BLAS/LAPACK source code. 

    Jose and his students fixed up the support for __float128;    presumably it could be extended to __complex128 also with some tweaking.


     Barry



On Aug 22, 2012, at 6:52 AM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> GNU __float128 does not work with complex. There is __complex128 (why they
> chose to implement this way, I do not understand), but we have not written
> that support yet. You can "watch" this issue to get notified when it's done
> 
> https://bitbucket.org/petsc/petsc-dev/issue/6/support-for-complex-with-128-bit-precision
> 
> Barry, is just doing text substitution to f2cblaslapack the right approach
> there?
> 
> On Wed, Aug 22, 2012 at 3:38 AM, Alexander Grayver
> <agrayver at gfz-potsdam.de>wrote:
> 
>> Hello petsc team,
>> 
>> I've tried to compile petsc-3.3-p2 with __float128 precision and complex
>> scalar type. The configure stage went through, but during make there are
>> errors.
>> See attached make.log
>> 
>> Any ideas?
>> 
>> --
>> Regards,
>> Alexander
>> 
>> 
>> 
>