Re: [petsc-dev] Fortran strings

[Matthew Knepley]

On Tue, May 31, 2016 at 7:34 AM, Mark Adams <mfad...@lbl.gov> wrote:

> Wrapper code like this does is not working for Robert:
>

The easiest thing to do is just look at it in the debugger.

  Matt


> subroutine my_PetscOptionsClearValue(value,ierr)
>   use petscsys
>   implicit none
>   character(len=250), intent(in) :: value
>   PetscErrorCode, intent(inout) :: ierr
>
> #if PETSC_VERSION_LT(3,7,0)
>   call PetscOptionsClearValue(value,ierr)
> #else
>   call PetscOptionsClearValue(PETSC_NULL_OBJECT,value,ierr)
> #endif
>
> Direct calls to PetscOptionsClearValue work, but calling through his
> wrapper does not seem to do anything. Is Fortran doing something funny with
> strings here?
>
> Mark
>



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What most experimenters take for granted before they begin their
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