fact: Definition computeOverflow n (arg1 arg2 res: BITS n) := match (msb arg1,msb arg2,msb res) with | (true,true,false) | (false,false,true) => true | _ => false end.
imports: mathcomp.ssreflect.ssreflect mathcomp(ssrfun ssrbool eqtype ssrnat seq tuple) spec