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Searched refs:neg_xi (Results 1 – 2 of 2) sorted by relevance

/petsc/src/tao/bound/impls/bncg/
H A Dbncg.h44 PetscBool neg_xi; member
H A Dbncg.c213 cg->neg_xi = PETSC_TRUE; in TaoSetFromOptions_BNCG()
215 … when it might be a smaller descent direction than necessary", "", cg->neg_xi, &cg->neg_xi, NULL)); in TaoSetFromOptions_BNCG()
381 cg->neg_xi = PETSC_TRUE; in TaoCreate_BNCG()
721 if (gkp1_yk < 0 && cg->neg_xi) gamma = -1.0 * gd / dk_yk; in TaoBNCGStepDirectionUpdate()
745 if (cg->neg_xi) { in TaoBNCGStepDirectionUpdate()