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(* TEST
readonly_files = "main.c";
arguments = "-DSORT -DFUN=quicksort main.c";
asmgen;
*)
(**************************************************************************)
(* *)
(* OCaml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. *)
(* *)
(* All rights reserved. This file is distributed under the terms of *)
(* the GNU Lesser General Public License version 2.1, with the *)
(* special exception on linking described in the file LICENSE. *)
(* *)
(**************************************************************************)
(function "quick" (lo: int hi: int a: val)
(if (< lo hi)
(letmut (i int lo
j int hi
pivot int (addraref a (>>s hi 1)))
(while (< i j)
(catch
(while 1
(if (>= i hi) (exit n25) [])
(if (> (addraref a (>>s i 1)) pivot) (exit n25) [])
(assign i (+ i 2)))
with (n25) [])
(catch
(while 1
(if (<= j lo) (exit n35) [])
(if (< (addraref a (>>s j 1)) pivot) (exit n35) [])
(assign j (- j 2)))
with (n35) [])
(if (< i j)
(let temp (addraref a (>>s i 1))
(addraset a (>>s i 1) (addraref a (>>s j 1)))
(addraset a (>>s j 1) temp))
[]))
(let temp (addraref a (>>s i 1))
(addraset a (>>s i 1) (addraref a (>>s hi 1)))
(addraset a (>>s hi 1) temp))
(app "quick" lo (- i 2) a unit)
(app "quick" (+ i 2) hi a unit))
[]))
(function "quicksort" (lo: int hi: int a: val)
(app "quick" (+ (<< lo 1) 1) (+ (<< hi 1) 1) a unit))
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