1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests MatShellTestMult()\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscmat.h> 5c4762a1bSJed Brown 6c4762a1bSJed Brown typedef struct _n_User *User; 7c4762a1bSJed Brown struct _n_User { 8c4762a1bSJed Brown Mat B; 9c4762a1bSJed Brown }; 10c4762a1bSJed Brown 11d71ae5a4SJacob Faibussowitsch static PetscErrorCode MatMult_User(Mat A, Vec X, Vec Y) 12d71ae5a4SJacob Faibussowitsch { 13c4762a1bSJed Brown User user; 14c4762a1bSJed Brown 15c4762a1bSJed Brown PetscFunctionBegin; 169566063dSJacob Faibussowitsch PetscCall(MatShellGetContext(A, &user)); 179566063dSJacob Faibussowitsch PetscCall(MatMult(user->B, X, Y)); 18*3ba16761SJacob Faibussowitsch PetscFunctionReturn(PETSC_SUCCESS); 19c4762a1bSJed Brown } 20c4762a1bSJed Brown 21d71ae5a4SJacob Faibussowitsch static PetscErrorCode MatMultTranspose_User(Mat A, Vec X, Vec Y) 22d71ae5a4SJacob Faibussowitsch { 23c4762a1bSJed Brown User user; 24c4762a1bSJed Brown 25c4762a1bSJed Brown PetscFunctionBegin; 269566063dSJacob Faibussowitsch PetscCall(MatShellGetContext(A, &user)); 279566063dSJacob Faibussowitsch PetscCall(MatMultTranspose(user->B, X, Y)); 28*3ba16761SJacob Faibussowitsch PetscFunctionReturn(PETSC_SUCCESS); 29c4762a1bSJed Brown } 30c4762a1bSJed Brown 31d71ae5a4SJacob Faibussowitsch static PetscErrorCode MyFunction(void *ctx, Vec x, Vec y) 32d71ae5a4SJacob Faibussowitsch { 33c4762a1bSJed Brown User user = (User)ctx; 34c4762a1bSJed Brown 35c4762a1bSJed Brown PetscFunctionBegin; 369566063dSJacob Faibussowitsch PetscCall(MatMult(user->B, x, y)); 37*3ba16761SJacob Faibussowitsch PetscFunctionReturn(PETSC_SUCCESS); 38c4762a1bSJed Brown } 39c4762a1bSJed Brown 40d71ae5a4SJacob Faibussowitsch int main(int argc, char **args) 41d71ae5a4SJacob Faibussowitsch { 42c4762a1bSJed Brown const PetscInt inds[] = {0, 1}; 43c4762a1bSJed Brown PetscScalar avals[] = {2, 3, 5, 7}; 44c4762a1bSJed Brown Mat S; 45c4762a1bSJed Brown User user; 46c4762a1bSJed Brown Vec base; 47c4762a1bSJed Brown 48327415f7SBarry Smith PetscFunctionBeginUser; 499566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc, &args, (char *)0, help)); 509566063dSJacob Faibussowitsch PetscCall(PetscNew(&user)); 519566063dSJacob Faibussowitsch PetscCall(MatCreateSeqAIJ(PETSC_COMM_WORLD, 2, 2, 2, NULL, &user->B)); 529566063dSJacob Faibussowitsch PetscCall(MatSetUp(user->B)); 539566063dSJacob Faibussowitsch PetscCall(MatSetValues(user->B, 2, inds, 2, inds, avals, INSERT_VALUES)); 549566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(user->B, MAT_FINAL_ASSEMBLY)); 559566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(user->B, MAT_FINAL_ASSEMBLY)); 569566063dSJacob Faibussowitsch PetscCall(MatCreateVecs(user->B, &base, NULL)); 579566063dSJacob Faibussowitsch PetscCall(MatCreateShell(PETSC_COMM_WORLD, 2, 2, 2, 2, user, &S)); 589566063dSJacob Faibussowitsch PetscCall(MatSetUp(S)); 599566063dSJacob Faibussowitsch PetscCall(MatShellSetOperation(S, MATOP_MULT, (void (*)(void))MatMult_User)); 609566063dSJacob Faibussowitsch PetscCall(MatShellSetOperation(S, MATOP_MULT_TRANSPOSE, (void (*)(void))MatMultTranspose_User)); 61c4762a1bSJed Brown 629566063dSJacob Faibussowitsch PetscCall(MatShellTestMult(S, MyFunction, base, user, NULL)); 639566063dSJacob Faibussowitsch PetscCall(MatShellTestMultTranspose(S, MyFunction, base, user, NULL)); 64c4762a1bSJed Brown 659566063dSJacob Faibussowitsch PetscCall(VecDestroy(&base)); 669566063dSJacob Faibussowitsch PetscCall(MatDestroy(&user->B)); 679566063dSJacob Faibussowitsch PetscCall(MatDestroy(&S)); 689566063dSJacob Faibussowitsch PetscCall(PetscFree(user)); 699566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 70b122ec5aSJacob Faibussowitsch return 0; 71c4762a1bSJed Brown } 72c4762a1bSJed Brown 73c4762a1bSJed Brown /*TEST 74c4762a1bSJed Brown 75c4762a1bSJed Brown test: 76c4762a1bSJed Brown args: -mat_shell_test_mult_view -mat_shell_test_mult_transpose_view 77c4762a1bSJed Brown 78c4762a1bSJed Brown TEST*/ 79