1c4762a1bSJed Brown static char help[] = "Test MatNullSpaceTest() with options prefixes.\n\n";
2c4762a1bSJed Brown
3c4762a1bSJed Brown #include <petscmat.h>
4c4762a1bSJed Brown
main(int argc,char ** argv)5d71ae5a4SJacob Faibussowitsch int main(int argc, char **argv)
6d71ae5a4SJacob Faibussowitsch {
7c4762a1bSJed Brown Mat mat;
8c4762a1bSJed Brown MatNullSpace nsp;
9c4762a1bSJed Brown PetscBool prefix = PETSC_FALSE, flg;
10c4762a1bSJed Brown PetscInt zero = 0;
11c4762a1bSJed Brown PetscScalar value = 0;
12*4d86920dSPierre Jolivet
13327415f7SBarry Smith PetscFunctionBeginUser;
149566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc, &argv, NULL, help));
159566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetBool(NULL, NULL, "-with_prefix", &prefix, NULL));
169566063dSJacob Faibussowitsch PetscCall(MatCreateDense(PETSC_COMM_WORLD, 1, 1, 1, 1, NULL, &mat));
179566063dSJacob Faibussowitsch PetscCall(MatSetOptionsPrefix(mat, prefix ? "prefix_" : NULL));
189566063dSJacob Faibussowitsch PetscCall(MatSetUp(mat));
199566063dSJacob Faibussowitsch PetscCall(MatSetValues(mat, 1, &zero, 1, &zero, &value, INSERT_VALUES));
209566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(mat, MAT_FINAL_ASSEMBLY));
219566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(mat, MAT_FINAL_ASSEMBLY));
229566063dSJacob Faibussowitsch PetscCall(MatNullSpaceCreate(PETSC_COMM_WORLD, PETSC_TRUE, 0, NULL, &nsp));
239566063dSJacob Faibussowitsch PetscCall(MatNullSpaceTest(nsp, mat, &flg));
2428b400f6SJacob Faibussowitsch PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_PLIB, "Null space test failed!");
259566063dSJacob Faibussowitsch PetscCall(MatNullSpaceDestroy(&nsp));
269566063dSJacob Faibussowitsch PetscCall(MatDestroy(&mat));
279566063dSJacob Faibussowitsch PetscCall(PetscFinalize());
28b122ec5aSJacob Faibussowitsch return 0;
29c4762a1bSJed Brown }
30c4762a1bSJed Brown
31c4762a1bSJed Brown /*TEST
32c4762a1bSJed Brown
33c4762a1bSJed Brown test:
34c4762a1bSJed Brown suffix: no_prefix
35c4762a1bSJed Brown output_file: output/ex227_no_prefix.out
36c4762a1bSJed Brown args: -mat_null_space_test_view -mat_view
37c4762a1bSJed Brown
38c4762a1bSJed Brown test:
39c4762a1bSJed Brown suffix: prefix
40c4762a1bSJed Brown output_file: output/ex227_prefix.out
41c4762a1bSJed Brown args: -prefix_mat_null_space_test_view -with_prefix -prefix_mat_view
42c4762a1bSJed Brown
43c4762a1bSJed Brown TEST*/
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