38   PetscReal         dgx, dgy, dg, dg2, fx, fy, stx, sty, dgtest;  in TaoLineSearchApply_MT()  local
95   dgtest      = ls->ftol * dginit;  in TaoLineSearchApply_MT()
178     ftest1 = finit + ls->step * dgtest;  in TaoLineSearchApply_MT()
179     if (ls->bounded) ftest2 = finit + ls->step * dgtest * ls->ftol;  in TaoLineSearchApply_MT()
201     if (ls->step == ls->stepmax && *f <= ftest1 && dg <= dgtest) {  in TaoLineSearchApply_MT()
206     if (ls->step == ls->stepmin && *f >= ftest1 && dg >= dgtest) {  in TaoLineSearchApply_MT()
228       fm   = *f - ls->step * dgtest; /* Define modified function */  in TaoLineSearchApply_MT()
229       fxm  = fx - stx * dgtest;      /* and derivatives */  in TaoLineSearchApply_MT()
230       fym  = fy - sty * dgtest;  in TaoLineSearchApply_MT()
231       dgm  = dg - dgtest;  in TaoLineSearchApply_MT()
232       dgxm = dgx - dgtest;  in TaoLineSearchApply_MT()
233       dgym = dgy - dgtest;  in TaoLineSearchApply_MT()
239       fx  = fxm + stx * dgtest; /* Reset the function and */  in TaoLineSearchApply_MT()
240       fy  = fym + sty * dgtest; /* gradient values */  in TaoLineSearchApply_MT()
241       dgx = dgxm + dgtest;  in TaoLineSearchApply_MT()
242       dgy = dgym + dgtest;  in TaoLineSearchApply_MT()