Definition round_sign_UP s l :=
match l with
| loc_Exact => false
| _ => negb s
end.

Theorem inbetween_int_UP_sign :
forall x m l,
inbetween_int m (Rabs x) l ->
Zceil x = cond_Zopp (Rlt_bool x 0) (cond_incr (round_sign_UP (Rlt_bool x 0) l) m).