# HG changeset patch
# User alpar
# Date 1133253830 0
# Node ID 1fee7c6b51296ee6903681a028555a868a4e5ba3
# Parent  eb6c34c76501175ee02e1f51d0b256cce775b69c
Clarify INVALID implementation.

diff -r eb6c34c76501 -r 1fee7c6b5129 lemon/base.cc
--- a/lemon/base.cc	Tue Nov 29 08:40:03 2005 +0000
+++ b/lemon/base.cc	Tue Nov 29 08:43:50 2005 +0000
@@ -24,4 +24,6 @@
   double Tolerance<double>::def_epsilon = 1e-10;
   float Tolerance<float>::def_epsilon = 1e-4;
 
+  const Invalid INVALID = Invalid();
+
 } //namespace lemon
diff -r eb6c34c76501 -r 1fee7c6b5129 lemon/invalid.h
--- a/lemon/invalid.h	Tue Nov 29 08:40:03 2005 +0000
+++ b/lemon/invalid.h	Tue Nov 29 08:43:50 2005 +0000
@@ -38,13 +38,13 @@
   /// \ref Invalid is a global type that converts to each iterator
   /// in such a way that the value of the target iterator will be invalid.
 
-  // It is also used to convert the \c INVALID constant to the
-  // node iterator that makes is possible to write 
+  //const Invalid &INVALID = *(Invalid *)0;
 
-  //extern Invalid INVALID;
-
-  //const Invalid &INVALID = *(Invalid *)0;
+#ifdef LEMON_ONLY_TEMPLATES
   const Invalid INVALID = Invalid();
+#else
+  extern const Invalid INVALID;
+#endif
 
 } //namespace lemon