From 5c2b8ea6f6aa9766a017e7a194ffa61b5330010b Mon Sep 17 00:00:00 2001
From: Susan Hert <hert@mpi-sb.mpg.de>
Date: Wed, 2 May 2001 09:42:49 +0000
Subject: [PATCH] fixed bug in compare_x_at_y

---
 Packages/H2/changes.txt                          | 3 +++
 Packages/H2/include/CGAL/predicates_on_linesH2.h | 6 +++---
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/Packages/H2/changes.txt b/Packages/H2/changes.txt
index fceb527c570..dd18214b869 100644
--- a/Packages/H2/changes.txt
+++ b/Packages/H2/changes.txt
@@ -1,3 +1,6 @@
+2.28   (??  May 2001)
+- refixed compare_x_at_y()
+
 2.27   (1  May 2001)
 - angle()
 - fixed compare_x_at_y() 
diff --git a/Packages/H2/include/CGAL/predicates_on_linesH2.h b/Packages/H2/include/CGAL/predicates_on_linesH2.h
index 2b59293fb1b..fc4f509ff08 100644
--- a/Packages/H2/include/CGAL/predicates_on_linesH2.h
+++ b/Packages/H2/include/CGAL/predicates_on_linesH2.h
@@ -138,15 +138,15 @@ compare_x_at_y(const PointH2<R>& p,
   typedef typename R::RT RT;
   CGAL_kernel_precondition( ! h.is_horizontal() );
   Oriented_side ors = h.oriented_side( p );
-  if ( h.b() < RT(0) )
+  if ( h.a() < RT(0) )
   {
       ors = opposite( ors );
   }
   if ( ors == ON_POSITIVE_SIDE )
   {
-      return SMALLER;
+      return LARGER;
   }
-  return ( ors == ON_NEGATIVE_SIDE ) ? LARGER : EQUAL;
+  return ( ors == ON_NEGATIVE_SIDE ) ? SMALLER : EQUAL;
 }
 
 template <class R>