diff options
author | herbelin <herbelin@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2009-01-02 12:22:09 +0000 |
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committer | herbelin <herbelin@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2009-01-02 12:22:09 +0000 |
commit | a3b9f0dda44975a0e5e757d35d7870595a4f4460 (patch) | |
tree | 4c84c31c73037501bb645febd3d31166d318ee27 /theories/NArith | |
parent | a2aa673e87859464be0ae57841b1313701dbe912 (diff) |
- Temptative change to notations like "as [|n H]_eqn" or "as [|n H]_eqn:H",
and, with a now generic intropattern "[]", also "as []_eqn", "as []_eqn:H"
for "destruct" with equality keeping.
- Fixed an accuracy loss in error location.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11732 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'theories/NArith')
-rw-r--r-- | theories/NArith/Ndigits.v | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/theories/NArith/Ndigits.v b/theories/NArith/Ndigits.v index a3326ccd3..ea5f02bba 100644 --- a/theories/NArith/Ndigits.v +++ b/theories/NArith/Ndigits.v @@ -511,7 +511,7 @@ Lemma Nless_trans : Nless a a' = true -> Nless a' a'' = true -> Nless a a'' = true. Proof. induction a as [|a IHa|a IHa] using N_ind_double; intros a' a'' H H0. - destruct (Nless N0 a'') as Heqb in *. trivial. + destruct (Nless N0 a'') as []_eqn:Heqb. trivial. rewrite (N0_less_2 a'' Heqb), (Nless_z a') in H0. discriminate H0. induction a' as [|a' _|a' _] using N_ind_double. rewrite (Nless_z (Ndouble a)) in H. discriminate H. @@ -539,10 +539,10 @@ Lemma Nless_total : forall a a', {Nless a a' = true} + {Nless a' a = true} + {a = a'}. Proof. induction a using N_rec_double; intro a'. - destruct (Nless N0 a') as Heqb in *. left. left. auto. + destruct (Nless N0 a') as []_eqn:Heqb. left. left. auto. right. rewrite (N0_less_2 a' Heqb). reflexivity. induction a' as [|a' _|a' _] using N_rec_double. - destruct (Nless N0 (Ndouble a)) as Heqb in *. left. right. auto. + destruct (Nless N0 (Ndouble a)) as []_eqn:Heqb. left. right. auto. right. exact (N0_less_2 _ Heqb). rewrite 2!Nless_def_1. destruct (IHa a') as [ | ->]. left. assumption. |