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Diffstat (limited to 'theories/ZArith/BinInt.v')
| -rw-r--r-- | theories/ZArith/BinInt.v | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/theories/ZArith/BinInt.v b/theories/ZArith/BinInt.v index 711047e52..d09337484 100644 --- a/theories/ZArith/BinInt.v +++ b/theories/ZArith/BinInt.v @@ -1393,6 +1393,9 @@ Proof. reflexivity. Qed. Lemma pos_is_nonneg p : 0 <= Z.pos p. Proof. easy. Qed. +Lemma neg_le_pos p q : Zneg p <= Zpos q. +Proof. easy. Qed. + Lemma neg_xO p : Z.neg p~0 = 2 * Z.neg p. Proof. reflexivity. Qed. |