fact: Variable spec_cont : forall xh xl yh yl, [[WW xh xl]] > [[WW yh yl]] -> [[WW yh yl]] <= 1 -> Zis_gcd [[WW xh xl]] [[WW yh yl]] [[cont xh xl yh yl]].
imports: ZArith Lia BigNumPrelude DoubleType DoubleBase DoubleDivn1 DoubleAdd DoubleSub