1c4762a1bSJed Brown static char help[] = "Tests MatTranspose() and MatEqual() for MPIAIJ matrices.\n\n"; 2c4762a1bSJed Brown 3c4762a1bSJed Brown #include <petscmat.h> 4c4762a1bSJed Brown 5d71ae5a4SJacob Faibussowitsch int main(int argc, char **argv) 6d71ae5a4SJacob Faibussowitsch { 7c4762a1bSJed Brown Mat A, B; 8c4762a1bSJed Brown PetscInt m = 7, n, i, rstart, rend, cols[3]; 9c4762a1bSJed Brown PetscScalar v[3]; 10c4762a1bSJed Brown PetscBool equal; 11c4762a1bSJed Brown const char *eq[2]; 12c4762a1bSJed Brown 13327415f7SBarry Smith PetscFunctionBeginUser; 14*c8025a54SPierre Jolivet PetscCall(PetscInitialize(&argc, &argv, NULL, help)); 159566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-m", &m, NULL)); 16c4762a1bSJed Brown n = m; 17c4762a1bSJed Brown 18c4762a1bSJed Brown /* ------- Assemble matrix, --------- */ 19c4762a1bSJed Brown 209566063dSJacob Faibussowitsch PetscCall(MatCreateAIJ(PETSC_COMM_WORLD, PETSC_DECIDE, PETSC_DECIDE, m, n, 0, 0, 0, 0, &A)); 219566063dSJacob Faibussowitsch PetscCall(MatSetOption(A, MAT_NEW_NONZERO_LOCATION_ERR, PETSC_FALSE)); 229566063dSJacob Faibussowitsch PetscCall(MatGetOwnershipRange(A, &rstart, &rend)); 23c4762a1bSJed Brown if (!rstart) { 24c4762a1bSJed Brown cols[0] = 0; 25c4762a1bSJed Brown cols[1] = 1; 269371c9d4SSatish Balay v[0] = 2.0; 279371c9d4SSatish Balay v[1] = -1.0; 289566063dSJacob Faibussowitsch PetscCall(MatSetValues(A, 1, &rstart, 2, cols, v, INSERT_VALUES)); 29c4762a1bSJed Brown rstart++; 30c4762a1bSJed Brown } 31c4762a1bSJed Brown if (rend == m) { 32c4762a1bSJed Brown rend--; 33c4762a1bSJed Brown cols[0] = rend - 1; 34c4762a1bSJed Brown cols[1] = rend; 359371c9d4SSatish Balay v[0] = -1.0; 369371c9d4SSatish Balay v[1] = 2.0; 379566063dSJacob Faibussowitsch PetscCall(MatSetValues(A, 1, &rend, 2, cols, v, INSERT_VALUES)); 38c4762a1bSJed Brown } 399371c9d4SSatish Balay v[0] = -1.0; 409371c9d4SSatish Balay v[1] = 2.0; 419371c9d4SSatish Balay v[2] = -1.0; 42c4762a1bSJed Brown for (i = rstart; i < rend; i++) { 43c4762a1bSJed Brown cols[0] = i - 1; 44c4762a1bSJed Brown cols[1] = i; 45c4762a1bSJed Brown cols[2] = i + 1; 469566063dSJacob Faibussowitsch PetscCall(MatSetValues(A, 1, &i, 3, cols, v, INSERT_VALUES)); 47c4762a1bSJed Brown } 489566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 499566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 50c4762a1bSJed Brown 519566063dSJacob Faibussowitsch PetscCall(MatTranspose(A, MAT_INITIAL_MATRIX, &B)); 52c4762a1bSJed Brown 539566063dSJacob Faibussowitsch PetscCall(MatEqual(A, B, &equal)); 54c4762a1bSJed Brown 55c4762a1bSJed Brown eq[0] = "not equal"; 56c4762a1bSJed Brown eq[1] = "equal"; 579566063dSJacob Faibussowitsch PetscCall(PetscPrintf(PETSC_COMM_WORLD, "Matrices are %s\n", eq[equal])); 58c4762a1bSJed Brown 599566063dSJacob Faibussowitsch PetscCall(MatTranspose(A, MAT_REUSE_MATRIX, &B)); 609566063dSJacob Faibussowitsch PetscCall(MatEqual(A, B, &equal)); 619566063dSJacob Faibussowitsch if (!equal) PetscCall(PetscPrintf(PETSC_COMM_WORLD, "MatTranspose with MAT_REUSE_MATRIX failed")); 62c4762a1bSJed Brown 63c4762a1bSJed Brown /* Free data structures */ 649566063dSJacob Faibussowitsch PetscCall(MatDestroy(&A)); 659566063dSJacob Faibussowitsch PetscCall(MatDestroy(&B)); 66c4762a1bSJed Brown 679566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 68b122ec5aSJacob Faibussowitsch return 0; 69c4762a1bSJed Brown } 70c4762a1bSJed Brown 71c4762a1bSJed Brown /*TEST 72c4762a1bSJed Brown 73c4762a1bSJed Brown test: 74c4762a1bSJed Brown 75c4762a1bSJed Brown test: 76c4762a1bSJed Brown suffix: 2 77c4762a1bSJed Brown nsize: 2 78c4762a1bSJed Brown output_file: output/ex58_1.out 79c4762a1bSJed Brown 80c4762a1bSJed Brown TEST*/ 81