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Diffstat (limited to 'src/Util/ZUtil/Le.v')
| -rw-r--r-- | src/Util/ZUtil/Le.v | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/Util/ZUtil/Le.v b/src/Util/ZUtil/Le.v index ca180c556..a32d0fdd0 100644 --- a/src/Util/ZUtil/Le.v +++ b/src/Util/ZUtil/Le.v @@ -55,4 +55,10 @@ Module Z. Lemma sub_pos_bound a b X : 0 <= a < X -> 0 <= b < X -> -X < a - b < X. Proof. lia. Qed. + + Lemma le_sub_1_iff x y : x <= y - 1 <-> x < y. + Proof. lia. Qed. + + Lemma le_add_1_iff x y : x + 1 <= y <-> x < y. + Proof. lia. Qed. End Z. |