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| author |  letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2010-12-17 21:00:26 +0000 |
|---|---|---|
| committer | letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2010-12-17 21:00:26 +0000 |
| commit | e1cad068ffc188d06c37f46e1bf6e7b57e02e219 (patch) | |
| tree | 7d9f6b7051b21d3fd1fde1a257bdf1562b15729f /theories/Numbers/Natural/SpecViaZ | |
| parent | b1040ad095410fe925b0a3aaf9399776279486f0 (diff) | |
Cosmetic : let's take advantage of the n-ary exists notation
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13721 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'theories/Numbers/Natural/SpecViaZ')
| -rw-r--r-- | theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v b/theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v index 175b1ad2c..8ee48ba55 100644 --- a/theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v +++ b/theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v @@ -338,7 +338,7 @@ Qed. (** Bitwise operations *) Lemma testbit_spec : forall a n, 0<=n -> - exists l, exists h, (0<=l /\ l<2^n) /\ + exists l h, (0<=l /\ l<2^n) /\ a == l + ((if testbit a n then 1 else 0) + 2*h)*2^n. Proof. intros a n _. zify. |