57   Vec          diagsqrt; /* vector containing the reciprocals of the square roots of  member
144 static PetscErrorCode PCJacobiGetDiagonal_Jacobi(PC pc, Vec diag, Vec diagsqrt)  in PCJacobiGetDiagonal_Jacobi()  argument
150 …PetscCheck(j->diag || j->diagsqrt, comm, PETSC_ERR_ARG_WRONGSTATE, "Jacobi diagonal has not been c…  in PCJacobiGetDiagonal_Jacobi()
152 …PetscCheck(!diagsqrt || (diagsqrt && j->diagsqrt), comm, PETSC_ERR_ARG_WRONGSTATE, "Jacobi diagona…  in PCJacobiGetDiagonal_Jacobi()
155   if (diagsqrt) PetscCall(VecCopy(j->diagsqrt, diagsqrt));  in PCJacobiGetDiagonal_Jacobi()
175   Vec        diag, diagsqrt;  in PCSetUp_Jacobi()  local
201   diagsqrt = jac->diagsqrt;  in PCSetUp_Jacobi()
269   if (diagsqrt) {  in PCSetUp_Jacobi()
272     PetscCall(VecLockReadPop(diagsqrt));  in PCSetUp_Jacobi()
275       PetscCall(MatGetDiagonal(pc->pmat, diagsqrt));  in PCSetUp_Jacobi()
278       PetscCall(MatGetRowMaxAbs(pc->pmat, diagsqrt, NULL));  in PCSetUp_Jacobi()
281       PetscCall(MatGetRowSumAbs(pc->pmat, diagsqrt));  in PCSetUp_Jacobi()
284       PetscCall(MatGetRowSum(pc->pmat, diagsqrt));  in PCSetUp_Jacobi()
287     PetscCall(VecGetLocalSize(diagsqrt, &n));  in PCSetUp_Jacobi()
288     PetscCall(VecGetArray(diagsqrt, &x));  in PCSetUp_Jacobi()
297     PetscCall(VecRestoreArray(diagsqrt, &x));  in PCSetUp_Jacobi()
298     PetscCall(VecLockReadPush(diagsqrt));  in PCSetUp_Jacobi()
317   PetscCall(MatCreateVecs(pc->pmat, &jac->diagsqrt, NULL));  in PCSetUp_Jacobi_Symmetric()
318   PetscCall(VecLockReadPush(jac->diagsqrt));  in PCSetUp_Jacobi_Symmetric()
382   if (!jac->diagsqrt) PetscCall(PCSetUp_Jacobi_Symmetric(pc));  in PCApplySymmetricLeftOrRight_Jacobi()
383   PetscCall(VecPointwiseMult(y, x, jac->diagsqrt));  in PCApplySymmetricLeftOrRight_Jacobi()
393   if (jac->diagsqrt) PetscCall(VecLockReadPop(jac->diagsqrt));  in PCReset_Jacobi()
395   PetscCall(VecDestroy(&jac->diagsqrt));  in PCReset_Jacobi()
526   jac->diagsqrt = NULL;  in PCCreate_Jacobi()