1 /** @file exam_archive.cpp
3 * Here we test GiNaC's archiving system. */
6 * GiNaC Copyright (C) 1999-2010 Johannes Gutenberg University Mainz, Germany
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 using namespace GiNaC;
30 unsigned exam_archive()
34 cout << "examining archiving system" << flush;
36 symbol x("x"), y("y"), mu("mu"), dim("dim", "\\Delta");
39 // This expression is complete nonsense but it contains every type of
41 e = -42 * x * pow(y, sin(y*Catalan)) * dirac_ONE()
42 * epsilon_tensor(idx(fail(), 3), idx(0, 3), idx(y/2, 3))
44 varidx(lst(x, -11*y, acos(2*x).series(x==3-5*I, 3)) * color_ONE()
45 * metric_tensor(varidx(log(cos(128.0/(x*y))), 5), varidx(2, 5)), zeta(3)),
46 varidx(diag_matrix(lst(-1, Euler, atan(x/y==-15*I/17)))
47 * delta_tensor(idx(x, 2), idx(wild(7), 3)), zeta(3), true),
50 + dirac_gamma(varidx(mu, dim)) * dirac_gamma(varidx(mu, 4-dim, true))
51 * color_T(idx(x, 8), 1) * color_h(idx(x, 8), idx(y, 8), idx(2, 8))
52 * indexed(x, sy_anti(), idx(2*y+1, x), varidx(-mu, 5))
53 - 2.4275 * spinor_metric(spinidx(0, 2, false, true), spinidx(y))
54 + abs(x).series(x == y, 4);
57 ar.archive_ex(e, "expr 1");
59 std::ofstream fout("exam.gar", std::ios_base::binary);
64 std::ifstream fin("exam.gar", std::ios_base::binary);
67 f = ar.unarchive_ex(lst(x, y, mu, dim), "expr 1");
69 ex difference = (f - e).expand();
70 if (!difference.is_zero()) {
71 clog << "archiving/unarchiving " << e << endl
72 << "erroneously returned " << f << endl;
79 int main(int argc, char** argv)
81 return exam_archive();