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| author | letouzey | 2010-01-08 14:44:56 +0000 |
|---|---|---|
| committer | letouzey | 2010-01-08 14:44:56 +0000 |
| commit | 5db31bb0333810ccdd0a79e9855ae9d2fcdbf2d3 (patch) | |
| tree | dd8cd4a8b4453d96fdcd8fea56c9a56a4f766087 /theories/Numbers/Integer/SpecViaZ/ZSig.v | |
| parent | c630fdf04db508d5d877a6b1fd93145893377287 (diff) | |
Numbers: axiomatization + generic properties of abs and sgn.
This allow to really finish files about division.
An abs and sgn is added to BigZ.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12644 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'theories/Numbers/Integer/SpecViaZ/ZSig.v')
| -rw-r--r-- | theories/Numbers/Integer/SpecViaZ/ZSig.v | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/theories/Numbers/Integer/SpecViaZ/ZSig.v b/theories/Numbers/Integer/SpecViaZ/ZSig.v index 00e292db0f..ef3cd5c341 100644 --- a/theories/Numbers/Integer/SpecViaZ/ZSig.v +++ b/theories/Numbers/Integer/SpecViaZ/ZSig.v @@ -114,4 +114,12 @@ Module Type ZType. Parameter spec_gcd: forall a b, [gcd a b] = Zgcd (to_Z a) (to_Z b). + Parameter sgn : t -> t. + + Parameter spec_sgn : forall x, [sgn x] = Zsgn [x]. + + Parameter abs : t -> t. + + Parameter spec_abs : forall x, [abs x] = Zabs [x]. + End ZType. |