Preparing for release 1.5.6.

[ginac.git] / ginac / power.cpp

diff --git a/ginac/power.cpp b/ginac/power.cpp
index 53f7bb8700e9d27ce386ef24b6a5f13f38db4ff0..7ae0f04d69e4de2760d8eab81c3e17de90b989b0 100644 (file)
--- a/ginac/power.cpp
+++ b/ginac/power.cpp
@@ -3,7 +3,7 @@
  *  Implementation of GiNaC's symbolic exponentiation (basis^exponent). */
 
 /*
- *  GiNaC Copyright (C) 1999-2008 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2009 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
@@ -20,11 +20,6 @@
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#include <vector>
-#include <iostream>
-#include <stdexcept>
-#include <limits>
-
 #include "power.h"
 #include "expairseq.h"
 #include "add.h"
@@ -43,6 +38,11 @@
 #include "relational.h"
 #include "compiler.h"
 
+#include <iostream>
+#include <limits>
+#include <stdexcept>
+#include <vector>
+
 namespace GiNaC {
 
 GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(power, basic,
@@ -240,6 +240,8 @@ bool power::info(unsigned inf) const
                               basis.info(inf);
                case info_flags::expanded:
                        return (flags & status_flags::expanded);
+               case info_flags::positive:
+                       return basis.info(info_flags::positive) && exponent.info(info_flags::real);
                case info_flags::has_indices: {
                        if (flags & status_flags::has_indices)
                                return true;