24   PetscCall(TaoComputeObjectiveAndGradient(tao, tao->solution, &f, tao->gradient));  in TaoSolve_CG()
25   PetscCall(VecNorm(tao->gradient, NORM_2, &gnorm));  in TaoSolve_CG()
35   PetscCall(VecCopy(tao->gradient, tao->stepdirection));  in TaoSolve_CG()
63     PetscCall(VecCopy(tao->gradient, cgP->G_old));  in TaoSolve_CG()
64     PetscCall(VecDot(tao->gradient, tao->stepdirection, &gd));  in TaoSolve_CG()
77       PetscCall(VecCopy(tao->gradient, tao->stepdirection));  in TaoSolve_CG()
83 …PetscCall(TaoLineSearchApply(tao->linesearch, tao->solution, &f, tao->gradient, tao->stepdirection…  in TaoSolve_CG()
92       PetscCall(VecCopy(cgP->G_old, tao->gradient));  in TaoSolve_CG()
104       PetscCall(VecCopy(tao->gradient, tao->stepdirection));  in TaoSolve_CG()
108 …PetscCall(TaoLineSearchApply(tao->linesearch, tao->solution, &f, tao->gradient, tao->stepdirection…  in TaoSolve_CG()
116         PetscCall(VecCopy(cgP->G_old, tao->gradient));  in TaoSolve_CG()
118         PetscCall(VecCopy(tao->gradient, tao->stepdirection));  in TaoSolve_CG()
122 …PetscCall(TaoLineSearchApply(tao->linesearch, tao->solution, &f, tao->gradient, tao->stepdirection…  in TaoSolve_CG()
128           PetscCall(VecCopy(cgP->G_old, tao->gradient));  in TaoSolve_CG()
136     PetscCall(VecNorm(tao->gradient, NORM_2, &gnorm));  in TaoSolve_CG()
148     PetscCall(VecDot(tao->gradient, cgP->G_old, &ginner));  in TaoSolve_CG()
168         PetscCall(VecDot(tao->gradient, tao->stepdirection, &gd));  in TaoSolve_CG()
174         PetscCall(VecDot(tao->gradient, tao->stepdirection, &gd));  in TaoSolve_CG()
186     PetscCall(VecAXPBY(tao->stepdirection, -1.0, beta, tao->gradient));  in TaoSolve_CG()
201   if (!tao->gradient) PetscCall(VecDuplicate(tao->solution, &tao->gradient));  in TaoSetUp_CG()
204   if (!cgP->G_old) PetscCall(VecDuplicate(tao->gradient, &cgP->G_old));  in TaoSetUp_CG()