[petsc-users] missing types in petscsysdef.h

[Matthew Knepley]

On Tue, Feb 7, 2017 at 6:09 AM, Lukas van de Wiel <
lukas.drinkt.thee at gmail.com> wrote:

> Hi Matt,
>
> thank you for your fast reply.
>
> I have tried this with the dev version.
> The structure of the include files is a lot more transparent, now! Thanks!
>
> However, PetscReal is still not defined.
>

I think you need

  use petscsys

  Thanks,

    Matt


> I can use my old method to change the third to last line from petscsys.h
> block
>
> #if defined (PETSC_USE_REAL_SINGLE)
> #define PetscReal PetscFortranFloat
> #elif defined(PETSC_USE_REAL___FLOAT128)
> #define PetscReal PetscFortranLongDouble
> #elif defined(PETSC_USE_REAL_DOUBLE)
> #define PetscReal PetscFortranDouble
> #endif
>
> to
>
> #if defined (PETSC_USE_REAL_SINGLE)
> #define PetscReal PetscFortranFloat
> #elif defined(PETSC_USE_REAL___FLOAT128)
> #define PetscReal PetscFortranLongDouble
> #else
> #define PetscReal PetscFortranDouble
> #endif
>
> To make sure it PetscReal is defined as double, even wthen there is no
> PETSC_USE_REAL_[TYPE] defined, and similar for PetscScalar, but that
> is ugly. :-\
>
> Cheers
> Lukas
>
> On 2/7/17, Matthew Knepley <knepley at gmail.com> wrote:
> > On Tue, Feb 7, 2017 at 5:12 AM, Lukas van de Wiel <
> > lukas.drinkt.thee at gmail.com> wrote:
> >
> >> Dear fellow PETSc users,
> >>
> >> I have been using PETSc for several years now, but I notice that after
> >> every upgrade I have to make changes to include/finclude/petscsysdef.h
> >> to get my Fortran code to work with it (or, in 3.7.5
> >> include/petsc/finclude/petscsysdef.h)
> >>
> >
> > We will definitely fix this. However, the entire Fortran interface has
> been
> > rewritten to make it simpler,
> > and allow using all the features os F90. Please see the bottom of
> > http://www.mcs.anl.gov/petsc/documentation/changes/dev.html
> >
> > Would you be able to try out the master branch of PETSc development
> > (instructions here http://www.mcs.anl.gov/petsc/developers/index.html)?
> > This would let us know if the bug is still there.
> >
> >   Thanks,
> >
> >      Matt
> >
> >
> >> I have been running 3.4.2 for a few years, and PetscReal and
> >> PetscScalar were never defined, apparently because no
> >> PETSC_USE_REAL_[TYPE] was never defined.
> >>
> >> In 3.7.5 I have the same problem, and it also affects
> >> PetscFortranComplex which also depends on PETSC_USE_REAL_[TYPE].
> >>
> >> However, my configure.log nicely shows:
> >>
> >> #ifndef PETSC_USE_REAL_DOUBLE
> >> #define PETSC_USE_REAL_DOUBLE 1
> >> #endif
> >>
> >> It seems that changing petscsysdef.h is not the proper solution. Is
> >> there a more elegant way for me to fix this?
> >>
> >> Thanks for your expertise,
> >> Lukas
> >>
> >
> >
> >
> > --
> > 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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