- zpotri:procedure
These routines compute the inverse of a symmetric positive definite matrix A using the Cholesky factorization A = U**T*U or A = L*L**T computed by xPOTRF. Argument A is the triangular factor U or L as computed by xPOTRF. Argument UPLO indicates whether upper or lower triangle of A is stored (Upper or Lower). Optional argument LDA is the leading dimension of array A. The return value is the upper or lower triangle of the inverse of A.