1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests MatTranspose() and MatEqual() for MPIAIJ matrices.\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscmat.h> 5c4762a1bSJed Brown 6*d71ae5a4SJacob Faibussowitsch int main(int argc, char **argv) 7*d71ae5a4SJacob Faibussowitsch { 8c4762a1bSJed Brown Mat A, B; 9c4762a1bSJed Brown PetscInt m = 7, n, i, rstart, rend, cols[3]; 10c4762a1bSJed Brown PetscScalar v[3]; 11c4762a1bSJed Brown PetscBool equal; 12c4762a1bSJed Brown const char *eq[2]; 13c4762a1bSJed Brown 14327415f7SBarry Smith PetscFunctionBeginUser; 159566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc, &argv, (char *)0, help)); 169566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-m", &m, NULL)); 17c4762a1bSJed Brown n = m; 18c4762a1bSJed Brown 19c4762a1bSJed Brown /* ------- Assemble matrix, --------- */ 20c4762a1bSJed Brown 219566063dSJacob Faibussowitsch PetscCall(MatCreateAIJ(PETSC_COMM_WORLD, PETSC_DECIDE, PETSC_DECIDE, m, n, 0, 0, 0, 0, &A)); 229566063dSJacob Faibussowitsch PetscCall(MatSetOption(A, MAT_NEW_NONZERO_LOCATION_ERR, PETSC_FALSE)); 239566063dSJacob Faibussowitsch PetscCall(MatGetOwnershipRange(A, &rstart, &rend)); 24c4762a1bSJed Brown if (!rstart) { 25c4762a1bSJed Brown cols[0] = 0; 26c4762a1bSJed Brown cols[1] = 1; 279371c9d4SSatish Balay v[0] = 2.0; 289371c9d4SSatish Balay v[1] = -1.0; 299566063dSJacob Faibussowitsch PetscCall(MatSetValues(A, 1, &rstart, 2, cols, v, INSERT_VALUES)); 30c4762a1bSJed Brown rstart++; 31c4762a1bSJed Brown } 32c4762a1bSJed Brown if (rend == m) { 33c4762a1bSJed Brown rend--; 34c4762a1bSJed Brown cols[0] = rend - 1; 35c4762a1bSJed Brown cols[1] = rend; 369371c9d4SSatish Balay v[0] = -1.0; 379371c9d4SSatish Balay v[1] = 2.0; 389566063dSJacob Faibussowitsch PetscCall(MatSetValues(A, 1, &rend, 2, cols, v, INSERT_VALUES)); 39c4762a1bSJed Brown } 409371c9d4SSatish Balay v[0] = -1.0; 419371c9d4SSatish Balay v[1] = 2.0; 429371c9d4SSatish Balay v[2] = -1.0; 43c4762a1bSJed Brown for (i = rstart; i < rend; i++) { 44c4762a1bSJed Brown cols[0] = i - 1; 45c4762a1bSJed Brown cols[1] = i; 46c4762a1bSJed Brown cols[2] = i + 1; 479566063dSJacob Faibussowitsch PetscCall(MatSetValues(A, 1, &i, 3, cols, v, INSERT_VALUES)); 48c4762a1bSJed Brown } 499566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 509566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 51c4762a1bSJed Brown 529566063dSJacob Faibussowitsch PetscCall(MatTranspose(A, MAT_INITIAL_MATRIX, &B)); 53c4762a1bSJed Brown 549566063dSJacob Faibussowitsch PetscCall(MatEqual(A, B, &equal)); 55c4762a1bSJed Brown 56c4762a1bSJed Brown eq[0] = "not equal"; 57c4762a1bSJed Brown eq[1] = "equal"; 589566063dSJacob Faibussowitsch PetscCall(PetscPrintf(PETSC_COMM_WORLD, "Matrices are %s\n", eq[equal])); 59c4762a1bSJed Brown 609566063dSJacob Faibussowitsch PetscCall(MatTranspose(A, MAT_REUSE_MATRIX, &B)); 619566063dSJacob Faibussowitsch PetscCall(MatEqual(A, B, &equal)); 629566063dSJacob Faibussowitsch if (!equal) PetscCall(PetscPrintf(PETSC_COMM_WORLD, "MatTranspose with MAT_REUSE_MATRIX failed")); 63c4762a1bSJed Brown 64c4762a1bSJed Brown /* Free data structures */ 659566063dSJacob Faibussowitsch PetscCall(MatDestroy(&A)); 669566063dSJacob Faibussowitsch PetscCall(MatDestroy(&B)); 67c4762a1bSJed Brown 689566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 69b122ec5aSJacob Faibussowitsch return 0; 70c4762a1bSJed Brown } 71c4762a1bSJed Brown 72c4762a1bSJed Brown /*TEST 73c4762a1bSJed Brown 74c4762a1bSJed Brown test: 75c4762a1bSJed Brown 76c4762a1bSJed Brown test: 77c4762a1bSJed Brown suffix: 2 78c4762a1bSJed Brown nsize: 2 79c4762a1bSJed Brown output_file: output/ex58_1.out 80c4762a1bSJed Brown 81c4762a1bSJed Brown TEST*/ 82