1 /** @file time_lw_Qprime.cpp
3 * Test Q' from the paper "Comparison of Polynomial-Oriented CAS" by Robert H.
4 * Lewis and Michael Wester. */
7 * GiNaC Copyright (C) 1999-2000 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
25 #include "time_lw_w101n.h"
27 static unsigned test(void)
30 symbol lambda("lambda");
31 for (unsigned r=0; r<101; ++r) {
32 for (unsigned c=0; c<10; ++c) {
34 unsigned(ex_to_numeric(w101_numeric[r][2*c+1]).to_int()-1),
35 w101_numeric[r][2*c+2]);
40 for (unsigned r=0; r<101; ++r) {
42 for (unsigned c=0; c<100; ++c) {
43 m2.set(r,c,m2(r,c+1));
47 for (unsigned r=0; r<101; ++r) {
48 for (unsigned c=0; c<101; ++c) {
49 if (!m(r,c).is_zero())
53 ex cp = m2.charpoly(lambda);
55 if (cp.coeff(lambda,0) != numeric("140816284877507872414776")) {
56 clog << "characteristic polynomial miscalculated as " << cp << endl;
62 unsigned time_lw_Qprime(void)
69 cout << "timing Lewis-Wester test Q' (charpoly(P'))" << flush;
70 clog << "-------Lewis-Wester test Q' (charpoly(P'))" << endl;
73 // correct for very small times:
77 } while ((time=rolex.read())<0.1 && !result);
82 clog << "(no output)" << endl;
86 cout << int(1000*(time/count))*0.001 << 's' << endl;