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| author | Yann Herklotz <git@yannherklotz.com> | 2020-06-30 00:07:38 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-06-30 00:07:38 +0100 |
| commit | 1506d59970e5c81352eefc4c15b4668b56928ab1 (patch) | |
| tree | f6397bab2319a3ecc8535096bf50c31eb45c761d /src/common/IntegerExtra.v | |
| parent | 8a260a8b81617e192fc929e0189fd3df1327f80a (diff) | |
| parent | 1bfb8971328f63f5ae963eef45d7f3d4b9971a2a (diff) | |
| download | vericert-kvx-1506d59970e5c81352eefc4c15b4668b56928ab1.tar.gz vericert-kvx-1506d59970e5c81352eefc4c15b4668b56928ab1.zip | |
Merge pull request #8 from p0llard/develop
Eliminate memory bounds assumptions
Diffstat (limited to 'src/common/IntegerExtra.v')
| -rw-r--r-- | src/common/IntegerExtra.v | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/common/IntegerExtra.v b/src/common/IntegerExtra.v index 8df70d9..7d3156b 100644 --- a/src/common/IntegerExtra.v +++ b/src/common/IntegerExtra.v @@ -143,7 +143,7 @@ Module PtrofsExtra. Lemma divu_unsigned : forall x y, 0 < Ptrofs.unsigned y -> - Ptrofs.unsigned x < Ptrofs.max_unsigned -> + Ptrofs.unsigned x <= Ptrofs.max_unsigned -> Ptrofs.unsigned (Ptrofs.divu x y) = Ptrofs.unsigned x / Ptrofs.unsigned y. Proof. intros. @@ -154,7 +154,7 @@ Module PtrofsExtra. apply Ptrofs.unsigned_range. apply Z.div_le_upper_bound; auto. eapply Z.le_trans. - apply Z.lt_le_incl. exact H0. + exact H0. rewrite Z.mul_comm. apply Z.le_mul_diag_r; simplify; lia. Qed. |