1 /** @file exam_misc.cpp
5 * GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 static unsigned exam_expand_subs(void)
34 for (unsigned i=0; i<VECSIZE; ++i) {
38 // prepare aux so it will swallow anything but a1^2:
39 aux = -e + a[0] + a[1];
40 e = expand(subs(expand(pow(e, 2)), a[0] == aux));
43 clog << "Denny Fliegner's quick consistency check erroneously returned "
51 /* A simple modification of Denny Fliegner's three step consistency test:
52 * 1) e = (a0 + a1)^200
54 * 3) substitute a0 by -a1 in e
55 * after which e should return 0 (without expanding). */
56 static unsigned exam_expand_subs2(void)
59 symbol a("a"), b("b");
62 e = pow(a+b,200).expand();
66 clog << "e = pow(a+b,200).expand(); f = e.subs(a == -b); erroneously returned "
67 << f << " instead of simplifying to 0." << endl;
74 unsigned exam_misc(void)
78 cout << "examining miscellaneous other things" << flush;
79 clog << "----------miscellaneous other things:" << endl;
81 result += exam_expand_subs(); cout << '.' << flush;
82 result += exam_expand_subs2(); cout << '.' << flush;
85 cout << " passed " << endl;
86 clog << "(no output)" << endl;
88 cout << " failed " << endl;