petsc-3.9.4 2018-09-11
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UsingFortran

To use PETSc with Fortran you must use both PETSc include files and modules. At the beginning of every function and module definition you need something like

#include "petsc/finclude/petscXXX.h"
        use petscXXX

You can declare PETSc variables using either of the following.

   XXX variablename
   type(tXXX) variablename

For example,

#include "petsc/finclude/petscvec.h"
        use petscvec

   Vec b
   type(tVec) x

Level

beginner

Location

include/petscsys.h

Examples

src/vec/vec/examples/tutorials/ex20f90.F90.html

Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages