--- /dev/null
+/** @file exam_archive.cpp
+ *
+ * Here we test GiNaC's archiving system. */
+
+/*
+ * GiNaC Copyright (C) 1999-2001 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "exams.h"
+
+#include <fstream>
+
+unsigned exam_archive(void)
+{
+ unsigned result = 0;
+
+ cout << "examining archiving system" << flush;
+ clog << "----------archiving system:" << endl;
+
+ symbol x("x"), y("y"), mu("mu"), dim("dim");
+ ex e, f;
+
+ // This expression is complete nonsense but it contains every type of
+ // GiNaC object
+ e = -42 * x * pow(y, sin(y*Catalan)) * dirac_one()
+ * epsilon_tensor(idx(fail(), 3), idx(0, 3), idx(y/2, 3))
+ + lorentz_g(
+ varidx(lst(x, -11*y, acos(2*x).series(x==3-5*I, 3)) * color_ONE()
+ * metric_tensor(varidx(0, 5), varidx(2, 4)), zeta(3)),
+ varidx(diag_matrix(lst(-1, Euler, atan(x/y==-15*I/17)))
+ * delta_tensor(idx(x, 2), idx(y, 3)), log(cos(128.0/(x*y))), true),
+ true
+ )
+ + dirac_gamma(varidx(mu, dim)) * dirac_gamma(varidx(mu, 4-dim, true))
+ * color_T(idx(x, 8), 1) * color_h(idx(x, 8), idx(y, 8), idx(2, 8))
+ * indexed(x, indexed::antisymmetric, idx(2*y+1, x), varidx(-mu, 5))
+ + 0.775;
+
+ archive ar;
+ ar.archive_ex(e, "expr 1");
+ {
+ std::ofstream fout("exam.gar");
+ fout << ar;
+ }
+ ar.clear();
+ {
+ std::ifstream fin("exam.gar");
+ fin >> ar;
+ }
+ f = ar.unarchive_ex(lst(x, y, mu, dim), "expr 1");
+
+ if (!f.is_equal(e)) {
+ clog << "archiving/unarchiving " << e << endl
+ << "erroneously returned " << f << endl;
+ ++result;
+ }
+
+ if (!result) {
+ cout << " passed " << endl;
+ clog << "(no output)" << endl;
+ } else {
+ cout << " failed " << endl;
+ }
+
+ return result;
+}