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 11c4762a1bSJed Brown static PetscErrorCode MatMult_User(Mat A,Vec X,Vec Y) 12c4762a1bSJed Brown { 13c4762a1bSJed Brown User user; 14c4762a1bSJed Brown 15c4762a1bSJed Brown PetscFunctionBegin; 165f80ce2aSJacob Faibussowitsch CHKERRQ(MatShellGetContext(A,&user)); 175f80ce2aSJacob Faibussowitsch CHKERRQ(MatMult(user->B,X,Y)); 18c4762a1bSJed Brown PetscFunctionReturn(0); 19c4762a1bSJed Brown } 20c4762a1bSJed Brown 21c4762a1bSJed Brown static PetscErrorCode MatMultTranspose_User(Mat A,Vec X,Vec Y) 22c4762a1bSJed Brown { 23c4762a1bSJed Brown User user; 24c4762a1bSJed Brown 25c4762a1bSJed Brown PetscFunctionBegin; 265f80ce2aSJacob Faibussowitsch CHKERRQ(MatShellGetContext(A,&user)); 275f80ce2aSJacob Faibussowitsch CHKERRQ(MatMultTranspose(user->B,X,Y)); 28c4762a1bSJed Brown PetscFunctionReturn(0); 29c4762a1bSJed Brown } 30c4762a1bSJed Brown 31c4762a1bSJed Brown static PetscErrorCode MyFunction(void *ctx,Vec x,Vec y) 32c4762a1bSJed Brown { 33c4762a1bSJed Brown User user = (User) ctx; 34c4762a1bSJed Brown 35c4762a1bSJed Brown PetscFunctionBegin; 365f80ce2aSJacob Faibussowitsch CHKERRQ(MatMult(user->B,x,y)); 37c4762a1bSJed Brown PetscFunctionReturn(0); 38c4762a1bSJed Brown } 39c4762a1bSJed Brown 40c4762a1bSJed Brown int main(int argc,char **args) 41c4762a1bSJed Brown { 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 48*b122ec5aSJacob Faibussowitsch CHKERRQ(PetscInitialize(&argc,&args,(char*)0,help)); 495f80ce2aSJacob Faibussowitsch CHKERRQ(PetscNew(&user)); 505f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreateSeqAIJ(PETSC_COMM_WORLD,2,2,2,NULL,&user->B)); 515f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetUp(user->B)); 525f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetValues(user->B,2,inds,2,inds,avals,INSERT_VALUES)); 535f80ce2aSJacob Faibussowitsch CHKERRQ(MatAssemblyBegin(user->B,MAT_FINAL_ASSEMBLY)); 545f80ce2aSJacob Faibussowitsch CHKERRQ(MatAssemblyEnd(user->B,MAT_FINAL_ASSEMBLY)); 555f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreateVecs(user->B,&base,NULL)); 565f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreateShell(PETSC_COMM_WORLD,2,2,2,2,user,&S)); 575f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetUp(S)); 585f80ce2aSJacob Faibussowitsch CHKERRQ(MatShellSetOperation(S,MATOP_MULT,(void (*)(void))MatMult_User)); 595f80ce2aSJacob Faibussowitsch CHKERRQ(MatShellSetOperation(S,MATOP_MULT_TRANSPOSE,(void (*)(void))MatMultTranspose_User)); 60c4762a1bSJed Brown 615f80ce2aSJacob Faibussowitsch CHKERRQ(MatShellTestMult(S,MyFunction,base,user,NULL)); 625f80ce2aSJacob Faibussowitsch CHKERRQ(MatShellTestMultTranspose(S,MyFunction,base,user,NULL)); 63c4762a1bSJed Brown 645f80ce2aSJacob Faibussowitsch CHKERRQ(VecDestroy(&base)); 655f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&user->B)); 665f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&S)); 675f80ce2aSJacob Faibussowitsch CHKERRQ(PetscFree(user)); 68*b122ec5aSJacob Faibussowitsch CHKERRQ(PetscFinalize()); 69*b122ec5aSJacob Faibussowitsch return 0; 70c4762a1bSJed Brown } 71c4762a1bSJed Brown 72c4762a1bSJed Brown /*TEST 73c4762a1bSJed Brown 74c4762a1bSJed Brown test: 75c4762a1bSJed Brown args: -mat_shell_test_mult_view -mat_shell_test_mult_transpose_view 76c4762a1bSJed Brown 77c4762a1bSJed Brown TEST*/ 78