wanabe	2009-07-20 12:53:19 +0900 (Mon, 20 Jul 2009)

  New Revision: 24211

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=24211

  Log:
    * lib/matrix.rb (Matrix#rank): revert a part of r20859 to avoid
      infinite loop.  [Bug #1020]

  Modified files:
    trunk/ChangeLog
    trunk/lib/matrix.rb

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 24210)
+++ ChangeLog	(revision 24211)
@@ -1,3 +1,8 @@
+Mon Jul 20 12:51:39 2009  wanabe  <s.wanabe@g...>
+
+	* lib/matrix.rb (Matrix#rank): revert a part of r20859 to avoid
+	  infinite loop.  [Bug #1020]
+
 Mon Jul 20 11:12:54 2009  Nobuyoshi Nakada  <nobu@r...>
 
 	* configure.in, Makefile.in (TEST_RUNNABLE): tests are no
Index: lib/matrix.rb
===================================================================
--- lib/matrix.rb	(revision 24210)
+++ lib/matrix.rb	(revision 24211)
@@ -770,7 +770,7 @@
     end
     rank = 0
     k = 0
-    loop do
+    begin
       if (akk = a[k][k]) == 0
         i = k
         exists = true
@@ -812,8 +812,7 @@
         end
       end
       rank += 1
-      break unless (k += 1) <= a_column_size - 1
-    end
+    end while (k += 1) <= a_column_size - 1
     return rank
   end
 

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