Actual source code: ex232.c

petsc-3.12.5 2020-03-29
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  2: /* tests MatSeqSBAIJSetPreallocationCSR() and MatMPISBAIJSetPreallocationCSR() */

  4:  #include <petsc.h>

  6: int main(int argc, char **args)
  7: {
  8:   PetscInt       ia[3] = { 0, 2, 4};
  9:   PetscInt       ja[4] = { 0, 1, 0, 1};
 10:   PetscScalar    c[16] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
 11:   Mat            ssbaij;
 12:   Mat            msbaij;

 15:   PetscInitialize(&argc,&args,(char*)0,(char*)0);if (ierr) return ierr;

 17:   MatCreate(PETSC_COMM_SELF, &ssbaij);
 18:   MatCreate(PETSC_COMM_SELF, &msbaij);
 19:   MatSetType(ssbaij, MATSEQSBAIJ);
 20:   MatSetType(msbaij, MATMPISBAIJ);
 21:   MatSetBlockSize(ssbaij, 2);
 22:   MatSetSizes(ssbaij, 4, 4, 4, 4);
 23:   MatSetBlockSize(msbaij, 2);
 24:   MatSetSizes(msbaij, 4, 4, 4, 4);
 25:   MatSeqSBAIJSetPreallocationCSR(ssbaij, 2, ia, ja, c);
 26:   MatMPISBAIJSetPreallocationCSR(msbaij, 2, ia, ja, c);
 27:   MatView(ssbaij, PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF));
 28:   MatView(msbaij, PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF));
 29:   MatDestroy(&ssbaij);
 30:   MatDestroy(&msbaij);
 31:   PetscFinalize();
 32:   return ierr;
 33: }

 35: /*TEST

 37:    test:
 38:      filter: sed "s?\.??g"

 40: TEST*/