End Znearest.
Section rndNA.
Global Instance valid_rnd_NA : Valid_rnd (Znearest (Zle_bool 0)) := valid_rnd_N _.

(* Specifications: *)
Theorem round_NA_pt :
forall x,
Rnd_NA_pt generic_format x (round (Znearest (Zle_bool 0)) x).
Theorem round_NA_pt :
forall x,
Rnd_NA_pt generic_format x (round (Znearest (Zle_bool 0)) x).