S.Mat
val eye : int -> Owl_dense_matrix.S.mat
val tril : ?k:int -> Owl_dense_matrix.S.mat -> Owl_dense_matrix.S.mat
val triu : ?k:int -> Owl_dense_matrix.S.mat -> Owl_dense_matrix.S.mat
val diagm : ?k:int -> Owl_dense_matrix.S.mat -> Owl_dense_matrix.S.mat