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/usr/lib/petscdir/3.7.5/x86_64-linux-gnu-real-debug/include/petsc/finclude/ftn-auto/petscmatfd.h90 is in libpetsc3.7.5-dbg 3.7.5+dfsg1-4+b1.

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      subroutine MatFDColoringSetParameters(a,b,c,z)
       MatFDColoring a ! MatFDColoring
       PetscReal b ! PetscReal
       PetscReal c ! PetscReal
       integer z
       end subroutine
      subroutine MatFDColoringSetBlockSize(a,b,c,z)
       MatFDColoring a ! MatFDColoring
       PetscInt b ! PetscInt
       PetscInt c ! PetscInt
       integer z
       end subroutine
      subroutine MatFDColoringSetUp(a,b,c,z)
       Mat a ! Mat
       ISColoring b ! ISColoring
       MatFDColoring c ! MatFDColoring
       integer z
       end subroutine
      subroutine MatFDColoringSetFromOptions(a,z)
       MatFDColoring a ! MatFDColoring
       integer z
       end subroutine
      subroutine MatFDColoringCreate(a,b,c,z)
       Mat a ! Mat
       ISColoring b ! ISColoring
       MatFDColoring c ! MatFDColoring
       integer z
       end subroutine
      subroutine MatFDColoringDestroy(a,z)
       MatFDColoring a ! MatFDColoring
       integer z
       end subroutine