From 64d9a383186a3b45b7e3ef3ae65ced13ff983202 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Villemot?= <sebastien.villemot@ens.fr>
Date: Wed, 12 May 2010 11:50:27 +0200
Subject: [PATCH] Macro-processor: integer ranges with lower bound greater than
 upper bound are now empty (for consistency with MATLAB)

---
 macro/MacroValue.cc | 6 ------
 macro/MacroValue.hh | 2 +-
 2 files changed, 1 insertion(+), 7 deletions(-)

diff --git a/macro/MacroValue.cc b/macro/MacroValue.cc
index d2118075..98833cab 100644
--- a/macro/MacroValue.cc
+++ b/macro/MacroValue.cc
@@ -325,12 +325,6 @@ IntMV::new_range(MacroDriver &driver, const MacroValue *mv1, const MacroValue *m
   int v2 = mv2i->value;
 
   vector<int> result;
-  if (v2 < v1)
-    {
-      int x = v2;
-      v2 = v1;
-      v1 = x;
-    }
   for (; v1 <= v2; v1++)
     result.push_back(v1);
   return new ArrayMV<int>(driver, result);
diff --git a/macro/MacroValue.hh b/macro/MacroValue.hh
index 52b566f4..e379a602 100644
--- a/macro/MacroValue.hh
+++ b/macro/MacroValue.hh
@@ -153,7 +153,7 @@ public:
   //! Creates a integer range
   /*! Arguments must be of type IntMV.
     Returns an integer array containing all integers between mv1 and mv2.
-    If mv2 < mv1, constructs the range in decreasing order.
+    If mv2 < mv1, returns an empty range (for consistency with MATLAB).
   */
   static const MacroValue *new_range(MacroDriver &driver, const MacroValue *mv1, const MacroValue *mv2) throw (TypeError);
 };