Fixed bug in mLi summation causing premature drop-out and made Nielsen polylog

[ginac.git] / ginac / basic.h

diff --git a/ginac/basic.h b/ginac/basic.h
index b08ad6693472859ccf1645abf889f1558b3f37d2..348523791a19afa50abd1c84006c49fe003758c8 100644 (file)
--- a/ginac/basic.h
+++ b/ginac/basic.h
@@ -3,7 +3,7 @@
  *  Interface to GiNaC's ABC. */
 
 /*
- *  GiNaC Copyright (C) 1999-2006 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2008 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -25,6 +25,7 @@
 
 #include <cstddef> // for size_t
 #include <vector>
+#include <set>
 #include <map>
 // CINT needs <algorithm> to work properly with <vector>
 #include <algorithm>
@@ -45,6 +46,7 @@ class archive_node;
 class print_context;
 
 typedef std::vector<ex> exvector;
+typedef std::set<ex, ex_is_less> exset;
 typedef std::map<ex, ex, ex_is_less> exmap;
 
 // Define this to enable some statistical output for comparisons and hashing