From 8568214f1b7950fe9c5d95c04e851c00f49751ce Mon Sep 17 00:00:00 2001
From: letouzey
Date: Wed, 16 Apr 2003 22:23:58 +0000
Subject: simplification: fst (list_chop n l) = firstn n l et snd (list_chop n
 l) = list_skipn n l

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@3931 85f007b7-540e-0410-9357-904b9bb8a0f7
---
 kernel/closure.ml | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

(limited to 'kernel/closure.ml')

diff --git a/kernel/closure.ml b/kernel/closure.ml
index c3b828a39d..1e7dadb04e 100644
--- a/kernel/closure.ml
+++ b/kernel/closure.ml
@@ -474,9 +474,7 @@ let rec stack_tail p s =
       | Zapp args :: s ->
 	  let q = List.length args in
 	  if p >= q then stack_tail (p-q) s
-	  else
-            let (_,aft) = list_chop p args in
-            Zapp aft :: s
+	  else Zapp (list_skipn p args) :: s
       | _ -> failwith "stack_tail"
 let rec stack_nth s p = match s with
   | Zapp args :: s ->
@@ -823,7 +821,7 @@ let rec drop_parameters depth n stk =
         if n > q then drop_parameters depth (n-q) s
         else if n = q then reloc_rargs depth s
         else
-          let (_,aft) = list_chop n args in
+          let aft = list_skipn n args in
           reloc_rargs depth (append_stack_list (aft,s))
     | Zshift(k)::s -> drop_parameters (depth-k) n s
     | [] -> assert (n=0); []
-- 
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