1 static char help[] = "Tests MatTranspose() with MAT_REUSE_MATRIX and different nonzero pattern\n\n";
2
3 #include <petscmat.h>
4
main(int argc,char ** argv)5 int main(int argc, char **argv)
6 {
7 Mat A, B;
8 PetscMPIInt size;
9
10 PetscCall(PetscInitialize(&argc, &argv, NULL, help));
11 PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size));
12 PetscCheck(size == 1, PETSC_COMM_WORLD, PETSC_ERR_WRONG_MPI_SIZE, "This is a uniprocessor example only!");
13 PetscCall(MatCreateSeqAIJ(PETSC_COMM_SELF, 2, 2, 2, NULL, &A));
14 PetscCall(MatSetValue(A, 0, 0, 1.0, INSERT_VALUES));
15 PetscCall(MatSetValue(A, 0, 1, 2.0, INSERT_VALUES));
16 PetscCall(MatSetValue(A, 1, 1, 4.0, INSERT_VALUES));
17 PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY));
18 PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY));
19 PetscCall(MatView(A, PETSC_VIEWER_STDOUT_SELF));
20 PetscCall(MatTranspose(A, MAT_INITIAL_MATRIX, &B));
21 PetscCall(MatView(B, PETSC_VIEWER_STDOUT_SELF));
22 PetscCall(MatSetOption(A, MAT_NEW_NONZERO_ALLOCATION_ERR, PETSC_FALSE));
23 PetscCall(MatSetValue(A, 1, 0, 3.0, INSERT_VALUES));
24 PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY));
25 PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY));
26 PetscCall(MatView(A, PETSC_VIEWER_STDOUT_SELF));
27 PetscCall(MatTranspose(A, MAT_REUSE_MATRIX, &B));
28 PetscCall(MatView(B, PETSC_VIEWER_STDOUT_SELF));
29 PetscCall(MatDestroy(&A));
30 PetscCall(MatDestroy(&B));
31 PetscCall(PetscFinalize());
32 return 0;
33 }
34
35 /*TEST
36
37 test:
38
39 TEST*/
40