I just put it with the Fortran source code and compile it with the rest of the application code; here is the makefile I used
makefile
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On Sep 26, 2013, at 10:14 AM, Christophe Ortiz <[email protected]> wrote: > By the way, what should I do with the small .c code ? Where should I put it ? > > Christophe > > > > On Thu, Sep 26, 2013 at 4:09 PM, Barry Smith <[email protected]> wrote: > > Christophe, > > Despite my LinkIn Endorsement for expertise in Fortran :-) I cannot > pretend to be an expert in FortranXX but I have cooked up an example > demonstrating accessing the Vec entries as if they are in an array of derived > types. I've attached the example code; there needs to be a small C stub that > defines the functions for your specific derived type name. > Note that it will only work I think if your N is a compile time constant. > > > > > It worked with > ~/Downloads$ gfortran --version > GNU Fortran (GCC) 4.8.1 20130404 (prerelease) > > > I do not understand exactly why it works since it uses > F90Array1dCreate(fa,PETSC_SCALAR,1,len,ptr PETSC_F90_2PTR_PARAM(ptrd)); which > has a single PETSC_SCALAR as a building block but … I hope it works for you. > If it doesn't, let us know the compiler you are using and we may be able to > get it working for that compiler. > > Barry > > > > > On Sep 26, 2013, at 4:41 AM, Christophe Ortiz <[email protected]> > wrote: > > > Hi all, > > > > Me again ! > > > > I have read in previous posts that it is hard in Fortran to declare > > something similar to a typedef struct in C to manage a multicomponent > > problem. > > > > Is it still the case ? Has the problem been solved ? > > > > I am asking because my plan is to implement a multicomponent problem (in > > 1D), with many components that will be organized in arrays of two > > dimensions. In C I could define > > > > typedef struct{ > > PetscScalar U; > > PetscScalar V; > > PetscScalar A[N][N]; > > } Field; > > > > and then I could calculate the residual function with > > > > F[i].U = ... > > F[i].V = ... > > F[i].A[k][n] = ... > > > > which is quite convenient. > > > > If in Fortran it is not possible to use a struct as in C, I am afraid I'll > > have to deal with > > > > F(jdof,i) = ... > > > > where I will have only jdof to address U, V and A[ ][ ], which can be > > difficult and not very convenient I guess. Before I move all my code to C, > > does anyone have an alternative idea to manage this multi(many)component > > problem in Fortran ? > > > > Many thanks in advance for your help and suggestion ! > > > > Christophe > > > >
