61   Vec                X, F, Y, W, G;  in SNESLineSearchApply_BT()  local
75   PetscCall(SNESLineSearchGetVecs(linesearch, &X, &F, &Y, &W, &G));  in SNESLineSearchApply_BT()
102     PetscCall(VecCopy(X, W));  in SNESLineSearchApply_BT()
123     PetscCall(MatMult(jac, Y, W));  in SNESLineSearchApply_BT()
124     PetscCall(VecDotRealPart(F, W, &initslope));  in SNESLineSearchApply_BT()
131     PetscCall(VecWAXPY(W, -lambda, Y, X));  in SNESLineSearchApply_BT()
132     if (linesearch->ops->viproject) PetscCall((*linesearch->ops->viproject)(snes, W));  in SNESLineSearchApply_BT()
141       PetscCall(SNESComputeObjective(snes, W, &g));  in SNESLineSearchApply_BT()
143       PetscCall((*linesearch->ops->snesfunc)(snes, W, G));  in SNESLineSearchApply_BT()
146         PetscCall((*linesearch->ops->vinorm)(snes, G, W, &gnorm));  in SNESLineSearchApply_BT()
195       PetscCall(VecWAXPY(W, -lambda, Y, X));  in SNESLineSearchApply_BT()
196       if (linesearch->ops->viproject) PetscCall((*linesearch->ops->viproject)(snes, W));  in SNESLineSearchApply_BT()
204         PetscCall(SNESComputeObjective(snes, W, &g));  in SNESLineSearchApply_BT()
207         PetscCall((*linesearch->ops->snesfunc)(snes, W, G));  in SNESLineSearchApply_BT()
210           PetscCall((*linesearch->ops->vinorm)(snes, G, W, &gnorm));  in SNESLineSearchApply_BT()
273         PetscCall(VecWAXPY(W, -lambda, Y, X));  in SNESLineSearchApply_BT()
274         if (linesearch->ops->viproject) PetscCall((*linesearch->ops->viproject)(snes, W));  in SNESLineSearchApply_BT()
283           PetscCall(SNESComputeObjective(snes, W, &g));  in SNESLineSearchApply_BT()
286           PetscCall((*linesearch->ops->snesfunc)(snes, W, G));  in SNESLineSearchApply_BT()
289             PetscCall((*linesearch->ops->vinorm)(snes, G, W, &gnorm));  in SNESLineSearchApply_BT()
324   PetscCall(SNESLineSearchPostCheck(linesearch, X, Y, W, &changed_y, &changed_w));  in SNESLineSearchApply_BT()
326     if (!changed_w) PetscCall(VecWAXPY(W, -lambda, Y, X));  in SNESLineSearchApply_BT()
327     if (linesearch->ops->viproject) PetscCall((*linesearch->ops->viproject)(snes, W));  in SNESLineSearchApply_BT()
330     PetscCall((*linesearch->ops->snesfunc)(snes, W, G));  in SNESLineSearchApply_BT()
333       PetscCall((*linesearch->ops->vinorm)(snes, G, W, &gnorm));  in SNESLineSearchApply_BT()
342   PetscCall(VecCopy(W, X));  in SNESLineSearchApply_BT()