Actual source code: mpiaijpc.c

petsc-3.14.6 2021-03-30
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  2: #include <../src/mat/impls/aij/mpi/mpiaij.h>

  4: PetscErrorCode  MatGetDiagonalBlock_MPIAIJ(Mat A,Mat *a)
  5: {
  7:   *a = ((Mat_MPIAIJ*)A->data)->A;
  8:   return(0);
  9: }