Actual source code: ex179.c


  2: static char help[] = "Tests MatTranspose() with MAT_REUSE_MATRIX and different nonzero pattern\n\n";

  4: #include <petscmat.h>

  6: int main(int argc, char **argv)
  7: {
  8:   Mat         A, B;
  9:   PetscMPIInt size;

 11:   PetscInitialize(&argc, &argv, (char *)0, help);
 12:   MPI_Comm_size(PETSC_COMM_WORLD, &size);
 14:   MatCreateSeqAIJ(PETSC_COMM_SELF, 2, 2, 2, NULL, &A);
 15:   MatSetValue(A, 0, 0, 1.0, INSERT_VALUES);
 16:   MatSetValue(A, 0, 1, 2.0, INSERT_VALUES);
 17:   MatSetValue(A, 1, 1, 4.0, INSERT_VALUES);
 18:   MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY);
 19:   MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY);
 20:   MatView(A, PETSC_VIEWER_STDOUT_SELF);
 21:   MatTranspose(A, MAT_INITIAL_MATRIX, &B);
 22:   MatView(B, PETSC_VIEWER_STDOUT_SELF);
 23:   MatSetOption(A, MAT_NEW_NONZERO_ALLOCATION_ERR, PETSC_FALSE);
 24:   MatSetValue(A, 1, 0, 3.0, INSERT_VALUES);
 25:   MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY);
 26:   MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY);
 27:   MatView(A, PETSC_VIEWER_STDOUT_SELF);
 28:   MatTranspose(A, MAT_REUSE_MATRIX, &B);
 29:   MatView(B, PETSC_VIEWER_STDOUT_SELF);
 30:   MatDestroy(&A);
 31:   MatDestroy(&B);
 32:   PetscFinalize();
 33:   return 0;
 34: }

 36: /*TEST

 38:    test:

 40: TEST*/