25   if (shell->zcols) {  in MatShellPreZeroRight()
28     PetscCall(VecISSet(shell->right_work, shell->zcols, 0.0));  in MatShellPreZeroRight()
79   if (shell->zcols) PetscCall(VecISSet(x, shell->zcols, 0.0));  in MatShellPostZeroRight()
306     if (shell->zcols) {  in MatZeroRowsColumns_Local_Shell()
307       PetscCall(ISSum(shell->zcols, is1, &is2));  in MatZeroRowsColumns_Local_Shell()
308       PetscCall(ISDestroy(&shell->zcols));  in MatZeroRowsColumns_Local_Shell()
310       shell->zcols = is2;  in MatZeroRowsColumns_Local_Shell()
311     } else shell->zcols = is1;  in MatZeroRowsColumns_Local_Shell()
458   PetscCall(ISDestroy(&shell->zcols));  in MatDestroy_Shell()
527 …PetscCheck(!shell->zcols && !shell->zrows, PetscObjectComm((PetscObject)D), PETSC_ERR_SUP, "MatPro…  in MatProductNumeric_Shell_X()
953     if (shellA->zcols) PetscCall(ISDuplicate(shellA->zcols, &shellB->zcols));  in MatCopy_Shell()
1178 …PetscCheck(!shell->zrows && !shell->zcols, PetscObjectComm((PetscObject)A), PETSC_ERR_SUP, "Cannot…  in MatGetDiagonalBlock_Shell()
1340     PetscCall(ISDestroy(&shell->zcols));  in MatAssemblyEnd_Shell()
1580 … *vshift, PetscScalar *vscale, Vec *dshift, Vec *left, Vec *right, Mat *axpy, IS *zrows, IS *zcols)  in MatShellGetScalingShifts_Shell()  argument
1600 …if (zcols == MAT_SHELL_NOT_ALLOWED) PetscCheck(!shell->zcols, PetscObjectComm((PetscObject)A), PET…  in MatShellGetScalingShifts_Shell()
1601   else if (zcols) *zcols = shell->zcols;  in MatShellGetScalingShifts_Shell()
2011 … *vshift, PetscScalar *vscale, Vec *dshift, Vec *left, Vec *right, Mat *axpy, IS *zrows, IS *zcols)  in MatShellGetScalingShifts()  argument
2015 …*, Vec *, Vec *, Mat *, IS *, IS *), (A, vshift, vscale, dshift, left, right, axpy, zrows, zcols));  in MatShellGetScalingShifts()