[petsc-users] Use 16 decimal digit in petsc

[Lukas van de Wiel]

Hi Edoardo,

the PETSc Changelog

https://www.mcs.anl.gov/petsc/documentation/changes/32.html

says:

Using gcc 4.6 you can now ./configure --with-precision=__float128
--download-qblaslapack to get computations in quad precision.

It might be worth giving a try.

Cheers
Lukas

On 12/1/17, Edoardo alinovi <edoardo.alinovi at gmail.com> wrote:
> Dear user,
>
> I am solving the few last issues in interfacing petsc with my code.
>
> My code works with  16 decimal digits after the "." , but it seems that
> petsc keeps up to 10 digits for some reason.
>
> Is there a way to fix this?
>
> Thank you very much  for the help,
>
> Edoardo
>