fact: Definition divdiff (l: ne_list QPoint): CR := divdiff_l (ne_list.head l) (ne_list.tail l).
imports: CoRN.model.totalorder.QposMinMax Unicode.Utf8 Setoid Arith List Program Permutation metric2.Classified CSetoids CPoly_ApZero CPoly_Degree CRArith CRArith_alg Qmetric Qring CReals Ranges stdlib_omissions.Pair stdlib_omissions.Q list_separates SetoidPermutation CRings