96   if (!shell->left) {  in MatShellPreScaleLeft()
99     if (!shell->left_work) PetscCall(VecDuplicate(shell->left, &shell->left_work));  in MatShellPreScaleLeft()
105       PetscCall(VecGetArrayRead(shell->left, &d));  in MatShellPreScaleLeft()
112     } else PetscCall(VecPointwiseMult(shell->left_work, x, shell->left));  in MatShellPreScaleLeft()
145   if (shell->left) PetscCall(VecPointwiseMult(x, x, shell->left));  in MatShellPostScaleLeft()
443   PetscCall(VecDestroy(&shell->left));  in MatDestroy_Shell()
528     if (shell->right || shell->left) {  in MatProductNumeric_Shell_X()
542       if (shell->left) PetscCall(MatDiagonalScale(mdata->B, shell->left, NULL));  in MatProductNumeric_Shell_X()
548       if (shell->right && shell->left) {  in MatProductNumeric_Shell_X()
551         PetscCall(VecEqual(shell->right, shell->left, &flg));  in MatProductNumeric_Shell_X()
558       if (shell->right && shell->left) {  in MatProductNumeric_Shell_X()
561         PetscCall(VecEqual(shell->right, shell->left, &flg));  in MatProductNumeric_Shell_X()
589       if (shell->left) {  in MatProductNumeric_Shell_X()
590         PetscCall(MatDiagonalScale(D, shell->left, NULL));  in MatProductNumeric_Shell_X()
596             PetscCall(VecPointwiseMult(shell->left_work, shell->left_work, shell->left));  in MatProductNumeric_Shell_X()
930   if (shellA->left) {  in MatCopy_Shell()
931     if (!shellB->left) PetscCall(VecDuplicate(shellA->left, &shellB->left));  in MatCopy_Shell()
932     PetscCall(VecCopy(shellA->left, shellB->left));  in MatCopy_Shell()
934     PetscCall(VecDestroy(&shellB->left));  in MatCopy_Shell()
1152   if (shell->left) PetscCall(VecPointwiseMult(v, v, shell->left));  in MatGetDiagonal_Shell()
1175   Vec        left = NULL, right = NULL;  in MatGetDiagonalBlock_Shell()  local
1185   if (shell->left) {  in MatGetDiagonalBlock_Shell()
1186     PetscCall(VecCreateLocalVector(shell->left, &left));  in MatGetDiagonalBlock_Shell()
1187     PetscCall(VecGetLocalVectorRead(shell->left, left));  in MatGetDiagonalBlock_Shell()
1193   PetscCall(MatDiagonalScale(*b, left, right));  in MatGetDiagonalBlock_Shell()
1194   if (shell->left) {  in MatGetDiagonalBlock_Shell()
1195     PetscCall(VecRestoreLocalVectorRead(shell->left, left));  in MatGetDiagonalBlock_Shell()
1196     PetscCall(VecDestroy(&left));  in MatGetDiagonalBlock_Shell()
1213   if (shell->left || shell->right) {  in MatShift_Shell()
1215       PetscCall(VecDuplicate(shell->left ? shell->left : shell->right, &shell->dshift));  in MatShift_Shell()
1218       if (shell->left) PetscCall(VecPointwiseMult(shell->dshift, shell->dshift, shell->left));  in MatShift_Shell()
1222     if (shell->left) PetscCall(VecPointwiseDivide(shell->dshift, shell->dshift, shell->left));  in MatShift_Shell()
1235   if (shell->left || shell->right) {  in MatDiagonalSet_Shell_Private()
1236 …if (!shell->right_work) PetscCall(VecDuplicate(shell->left ? shell->left : shell->right, &shell->r…  in MatDiagonalSet_Shell_Private()
1237     if (shell->left && shell->right) {  in MatDiagonalSet_Shell_Private()
1238       PetscCall(VecPointwiseDivide(shell->right_work, D, shell->left));  in MatDiagonalSet_Shell_Private()
1240     } else if (shell->left) {  in MatDiagonalSet_Shell_Private()
1241       PetscCall(VecPointwiseDivide(shell->right_work, D, shell->left));  in MatDiagonalSet_Shell_Private()
1288 static PetscErrorCode MatDiagonalScale_Shell(Mat Y, Vec left, Vec right)  in MatDiagonalScale_Shell()  argument
1293   if (left) {  in MatDiagonalScale_Shell()
1294     if (!shell->left) {  in MatDiagonalScale_Shell()
1295       PetscCall(VecDuplicate(left, &shell->left));  in MatDiagonalScale_Shell()
1296       PetscCall(VecCopy(left, shell->left));  in MatDiagonalScale_Shell()
1298       PetscCall(VecPointwiseMult(shell->left, shell->left, left));  in MatDiagonalScale_Shell()
1300     if (shell->zrows) PetscCall(VecPointwiseMult(shell->zvals, shell->zvals, left));  in MatDiagonalScale_Shell()
1317   if (shell->axpy) PetscCall(MatDiagonalScale(shell->axpy, left, right));  in MatDiagonalScale_Shell()
1332     PetscCall(VecDestroy(&shell->left));  in MatAssemblyEnd_Shell()
1580 …_Shell(Mat A, PetscScalar *vshift, PetscScalar *vscale, Vec *dshift, Vec *left, Vec *right, Mat *a…  in MatShellGetScalingShifts_Shell()  argument
1592 …if (left == MAT_SHELL_NOT_ALLOWED) PetscCheck(!shell->left, PetscObjectComm((PetscObject)A), PETSC…  in MatShellGetScalingShifts_Shell()
1593   else if (left) *left = shell->left;  in MatShellGetScalingShifts_Shell()
2011 …Shifts(Mat A, PetscScalar *vshift, PetscScalar *vscale, Vec *dshift, Vec *left, Vec *right, Mat *a…  in MatShellGetScalingShifts()  argument
2015 …r *, Vec *, Vec *, Vec *, Mat *, IS *, IS *), (A, vshift, vscale, dshift, left, right, axpy, zrows…  in MatShellGetScalingShifts()