Searched refs:s_k (Results 1 – 2 of 2) sorted by relevance
136 Vec s_k, y_k; in MatUpdateKernel_LMVM() local139 PetscCall(LMBasisGetNextVec(lmvm->basis[LMBASIS_S], &s_k)); in MatUpdateKernel_LMVM()140 PetscCall(VecCopy(S, s_k)); in MatUpdateKernel_LMVM()141 PetscCall(LMBasisRestoreNextVec(lmvm->basis[LMBASIS_S], &s_k)); in MatUpdateKernel_LMVM()
598 the approximate Jacobian such that $s_k = x_k - x_{k-1}$ and637 a subset of update vectors $s_k$ and $y_k$, and641 the well-known $y_k^T s_k / y_k^T y_k$ scalar initialization).