petsc-3.12.5 2020-03-29
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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