diff options
author | letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2012-12-18 19:30:37 +0000 |
---|---|---|
committer | letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2012-12-18 19:30:37 +0000 |
commit | d5cc9129b35953d8882fc511f513f6c9751d722e (patch) | |
tree | aae0c6ea44da749aa59ebac8ae4b706990c0fbb4 /theories/PArith | |
parent | c3ca134628ad4d9ef70a13b65c48ff17c737238f (diff) |
Rework of GenericMinMax and OrdersTac (helps extraction, cf. #2904)
Inner sub-modules with "Definition t := t" is hard to handle by
extraction: "type t = t" is recursive by default in OCaml, and
the aliased t cannot easily be fully qualified if it comes from
a higher unterminated module. There already exists some workarounds
(generating Coq__XXX modules), but this isn't playing nicely with
module types, where it's hard to insert code without breaking
subtyping.
To avoid falling too often in this situation, I've reorganized:
- GenericMinMax : we do not try anymore to deduce facts about
min by saying "min is a max on the reversed order". This hack
was anyway not so nice, some code was duplicated nonetheless
(at least statements), and the module structure was complex.
- OrdersTac : by splitting the functor argument in two
(EqLtLe <+ IsTotalOrder instead of TotalOrder), we avoid
the need for aliasing the type t, cf NZOrder.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16100 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'theories/PArith')
-rw-r--r-- | theories/PArith/BinPos.v | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/theories/PArith/BinPos.v b/theories/PArith/BinPos.v index 4747cfe14..be5858718 100644 --- a/theories/PArith/BinPos.v +++ b/theories/PArith/BinPos.v @@ -1486,6 +1486,8 @@ Qed. Include UsualMinMaxLogicalProperties <+ UsualMinMaxDecProperties. +Ltac order := Private_Tac.order. + (** Minimum, maximum and constant one *) Lemma max_1_l n : max 1 n = n. |