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| author | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2009-11-10 14:58:33 +0000 |
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| committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2009-11-10 14:58:33 +0000 |
| commit | 8ccc7f2f597aff2c8590c4e62552fb53406ad0f8 (patch) | |
| tree | a553844ce1b6960ae5240f65593c085be733e3b2 /lib/Coqlib.v | |
| parent | 74487f079dd56663f97f9731cea328931857495c (diff) | |
| download | compcert-kvx-8ccc7f2f597aff2c8590c4e62552fb53406ad0f8.tar.gz compcert-kvx-8ccc7f2f597aff2c8590c4e62552fb53406ad0f8.zip | |
More realistic treatment of jump tables: show the absence of overflow when accessing the table
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1172 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'lib/Coqlib.v')
| -rw-r--r-- | lib/Coqlib.v | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Coqlib.v b/lib/Coqlib.v index 7bc4f8bf..02fa7bab 100644 --- a/lib/Coqlib.v +++ b/lib/Coqlib.v @@ -648,6 +648,13 @@ Proof. rewrite list_length_z_cons. omega. Qed. +Lemma list_length_z_map: + forall (A B: Type) (f: A -> B) (l: list A), + list_length_z (map f l) = list_length_z l. +Proof. + induction l. reflexivity. simpl. repeat rewrite list_length_z_cons. congruence. +Qed. + (** Extract the n-th element of a list, as [List.nth_error] does, but the index [n] is of type [Z]. *) |