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| -rw-r--r-- | lib/IEEE754_extra.v | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/IEEE754_extra.v b/lib/IEEE754_extra.v index b0d1944e..d2372f17 100644 --- a/lib/IEEE754_extra.v +++ b/lib/IEEE754_extra.v @@ -879,6 +879,17 @@ Proof. unfold ZofB_range. rewrite D. rewrite Zle_bool_true by lia. rewrite Zle_bool_true by lia. auto. Qed. +(** ZofB_ne : convert float to integer, round to nearest *) + +Definition Zdiv_ne (a b : Z) := + let q := Z.div a b in + let q1 := Z.succ q in + match Z.compare (a-b*q) (b*q1-a) with + | Lt => q + | Gt => q1 + | Eq => (if Z.even q then q else q1) + end. + (** ** Algebraic identities *) (** Commutativity of addition and multiplication *) |