Add trivial shortcuts in expair plumbing of class add.

[ginac.git] / check / exam_archive.cpp

diff --git a/check/exam_archive.cpp b/check/exam_archive.cpp
index 97962d7a637bc8cd34b4ab7381f1b16b07a8e536..cc5891cd7a8402abaa0df3b2dbf7a090bc74ce01 100644 (file)
--- a/check/exam_archive.cpp
+++ b/check/exam_archive.cpp
@@ -3,7 +3,7 @@
  *  Here we test GiNaC's archiving system. */
 
 /*
- *  GiNaC Copyright (C) 1999-2008 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2015 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
@@ -20,12 +20,13 @@
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#include <iostream>
-#include <fstream>
 #include "ginac.h"
-using namespace std;
 using namespace GiNaC;
 
+#include <fstream>
+#include <iostream>
+using namespace std;
+
 unsigned exam_archive()
 {
        unsigned result = 0;
@@ -65,7 +66,8 @@ unsigned exam_archive()
        }
        f = ar.unarchive_ex(lst(x, y, mu, dim), "expr 1");
 
-       if (!f.is_equal(e)) {
+       ex difference = (f - e).expand();
+       if (!difference.is_zero()) {
                clog << "archiving/unarchiving " << e << endl
                     << "erroneously returned " << f << endl;
                ++result;