[petsc-users] 64 bit integers

[Matthew Knepley]

On Fri, Aug 17, 2012 at 11:04 AM, Michele Rosso <mrosso at uci.edu> wrote:

>  Thank you.
> How can I convert?
>

Don't use integer, use PetscInt. See any PETSc example.

  Matt


> Michele
>
>  On 08/17/2012 08:55 AM, Matthew Knepley wrote:
>
> On Fri, Aug 17, 2012 at 10:16 AM, Jed Brown <jedbrown at mcs.anl.gov> wrote:
>
>> On Fri, Aug 17, 2012 at 10:12 AM, Michele Rosso <mrosso at uci.edu> wrote:
>>
>>> Does this mean that Fortran compiler invoked by the PETSc Makefile will
>>> compile to code with the 64 bit integer option so that also Fortran
>>> Integer will be 64 bit?
>>
>>
>> NO, that would be bad because it breaks library interfaces.
>>
>>  You have to use the right types internally. If you use PetscInt
>> everywhere, then you'll be fine. If you mix types, you have to find out
>> where to convert.
>>
>
> I meant that if you use PetscInt in Fortran it was also be a 64-bit
> integer.
>
>     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
>
>
>


-- 
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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