134   PetscCall(VecStepMax(qp->S, qp->DS, &tstep3));  in QPIPStepLength()
192   PetscCall(VecAXPY(qp->DS, -1.0, qp->S));  in QPIPComputeStepDirection()
195   PetscCall(VecAXPY(qp->DS, -1.0, qp->TSwork));  in QPIPComputeStepDirection()
230   PetscCall(VecDuplicate(tao->solution, &qp->DS));  in TaoSetup_BQPIP()
308     PetscCall(VecSet(qp->DS, 0.0));  in TaoSolve_BQPIP()
356     PetscCall(VecAXPY(qp->RHS2, 1.0, qp->DS));  in TaoSolve_BQPIP()
362     PetscCall(VecDot(qp->DS, qp->DT, gap + 1));  in TaoSolve_BQPIP()
384       PetscCall(VecPointwiseMult(qp->DS, qp->DS, qp->DT));  in TaoSolve_BQPIP()
385       PetscCall(VecScale(qp->DS, -1.0));  in TaoSolve_BQPIP()
386       PetscCall(VecShift(qp->DS, sigmamu));  in TaoSolve_BQPIP()
387       PetscCall(VecPointwiseDivide(qp->DS, qp->DS, qp->T));  in TaoSolve_BQPIP()
390       PetscCall(VecAXPY(qp->RHS2, -1.0, qp->DS));  in TaoSolve_BQPIP()
423     PetscCall(VecAXPY(qp->S, dstep, qp->DS));  in TaoSolve_BQPIP()
480     PetscCall(VecDestroy(&qp->DS));  in TaoDestroy_BQPIP()