1 /** @file time_lw_E.cpp
3 * Test E from the paper "Comparison of Polynomial-Oriented CAS" by Robert H.
4 * Lewis and Michael Wester. */
7 * GiNaC Copyright (C) 1999-2004 Johannes Gutenberg University Mainz, Germany
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 static unsigned test()
32 for (int i=1; i<=10; ++i)
33 s += i*y*pow(t,i)/pow(y + abs(5-i)*t,i);
37 if (s.subs(t==0)!=0) {
38 clog << "something very strange happened" << endl;
51 cout << "timing Lewis-Wester test E (normalized sum of rational fcns)" << flush;
52 clog << "-------Lewis-Wester test E (normalized sum of rational fcns):" << endl;
55 // correct for very small times:
59 } while ((time=rolex.read())<0.1 && !result);
64 clog << "(no output)" << endl;
68 cout << int(1000*(time/count))*0.001 << 's' << endl;