1*c4762a1bSJed Brown 2*c4762a1bSJed Brown static char help[] = "Tests MatShellTestMult()\n\n"; 3*c4762a1bSJed Brown 4*c4762a1bSJed Brown #include <petscmat.h> 5*c4762a1bSJed Brown 6*c4762a1bSJed Brown typedef struct _n_User *User; 7*c4762a1bSJed Brown struct _n_User { 8*c4762a1bSJed Brown Mat B; 9*c4762a1bSJed Brown }; 10*c4762a1bSJed Brown 11*c4762a1bSJed Brown static PetscErrorCode MatMult_User(Mat A,Vec X,Vec Y) 12*c4762a1bSJed Brown { 13*c4762a1bSJed Brown User user; 14*c4762a1bSJed Brown PetscErrorCode ierr; 15*c4762a1bSJed Brown 16*c4762a1bSJed Brown PetscFunctionBegin; 17*c4762a1bSJed Brown ierr = MatShellGetContext(A,&user);CHKERRQ(ierr); 18*c4762a1bSJed Brown ierr = MatMult(user->B,X,Y);CHKERRQ(ierr); 19*c4762a1bSJed Brown PetscFunctionReturn(0); 20*c4762a1bSJed Brown } 21*c4762a1bSJed Brown 22*c4762a1bSJed Brown static PetscErrorCode MatMultTranspose_User(Mat A,Vec X,Vec Y) 23*c4762a1bSJed Brown { 24*c4762a1bSJed Brown User user; 25*c4762a1bSJed Brown PetscErrorCode ierr; 26*c4762a1bSJed Brown 27*c4762a1bSJed Brown PetscFunctionBegin; 28*c4762a1bSJed Brown ierr = MatShellGetContext(A,&user);CHKERRQ(ierr); 29*c4762a1bSJed Brown ierr = MatMultTranspose(user->B,X,Y);CHKERRQ(ierr); 30*c4762a1bSJed Brown PetscFunctionReturn(0); 31*c4762a1bSJed Brown } 32*c4762a1bSJed Brown 33*c4762a1bSJed Brown static PetscErrorCode MyFunction(void *ctx,Vec x,Vec y) 34*c4762a1bSJed Brown { 35*c4762a1bSJed Brown User user = (User) ctx; 36*c4762a1bSJed Brown PetscErrorCode ierr; 37*c4762a1bSJed Brown 38*c4762a1bSJed Brown PetscFunctionBegin; 39*c4762a1bSJed Brown ierr = MatMult(user->B,x,y);CHKERRQ(ierr); 40*c4762a1bSJed Brown PetscFunctionReturn(0); 41*c4762a1bSJed Brown } 42*c4762a1bSJed Brown 43*c4762a1bSJed Brown int main(int argc,char **args) 44*c4762a1bSJed Brown { 45*c4762a1bSJed Brown const PetscInt inds[] = {0,1}; 46*c4762a1bSJed Brown PetscScalar avals[] = {2,3,5,7}; 47*c4762a1bSJed Brown Mat S; 48*c4762a1bSJed Brown User user; 49*c4762a1bSJed Brown PetscErrorCode ierr; 50*c4762a1bSJed Brown Vec base; 51*c4762a1bSJed Brown 52*c4762a1bSJed Brown ierr = PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr; 53*c4762a1bSJed Brown ierr = PetscNew(&user);CHKERRQ(ierr); 54*c4762a1bSJed Brown ierr = MatCreateSeqAIJ(PETSC_COMM_WORLD,2,2,2,NULL,&user->B);CHKERRQ(ierr); 55*c4762a1bSJed Brown ierr = MatSetUp(user->B);CHKERRQ(ierr); 56*c4762a1bSJed Brown ierr = MatSetValues(user->B,2,inds,2,inds,avals,INSERT_VALUES);CHKERRQ(ierr); 57*c4762a1bSJed Brown ierr = MatAssemblyBegin(user->B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 58*c4762a1bSJed Brown ierr = MatAssemblyEnd(user->B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 59*c4762a1bSJed Brown ierr = MatCreateVecs(user->B,&base,NULL);CHKERRQ(ierr); 60*c4762a1bSJed Brown ierr = MatCreateShell(PETSC_COMM_WORLD,2,2,2,2,user,&S);CHKERRQ(ierr); 61*c4762a1bSJed Brown ierr = MatSetUp(S);CHKERRQ(ierr); 62*c4762a1bSJed Brown ierr = MatShellSetOperation(S,MATOP_MULT,(void (*)(void))MatMult_User);CHKERRQ(ierr); 63*c4762a1bSJed Brown ierr = MatShellSetOperation(S,MATOP_MULT_TRANSPOSE,(void (*)(void))MatMultTranspose_User);CHKERRQ(ierr); 64*c4762a1bSJed Brown 65*c4762a1bSJed Brown ierr = MatShellTestMult(S,MyFunction,base,user,NULL);CHKERRQ(ierr); 66*c4762a1bSJed Brown ierr = MatShellTestMultTranspose(S,MyFunction,base,user,NULL);CHKERRQ(ierr); 67*c4762a1bSJed Brown 68*c4762a1bSJed Brown ierr = VecDestroy(&base);CHKERRQ(ierr); 69*c4762a1bSJed Brown ierr = MatDestroy(&user->B);CHKERRQ(ierr); 70*c4762a1bSJed Brown ierr = MatDestroy(&S);CHKERRQ(ierr); 71*c4762a1bSJed Brown ierr = PetscFree(user);CHKERRQ(ierr); 72*c4762a1bSJed Brown ierr = PetscFinalize(); 73*c4762a1bSJed Brown return ierr; 74*c4762a1bSJed Brown } 75*c4762a1bSJed Brown 76*c4762a1bSJed Brown 77*c4762a1bSJed Brown /*TEST 78*c4762a1bSJed Brown 79*c4762a1bSJed Brown test: 80*c4762a1bSJed Brown args: -mat_shell_test_mult_view -mat_shell_test_mult_transpose_view 81*c4762a1bSJed Brown 82*c4762a1bSJed Brown TEST*/ 83