1 /** @file time_lw_F.cpp
3 * Test F from the paper "Comparison of Polynomial-Oriented CAS" by Robert H.
4 * Lewis and Michael Wester. */
7 * GiNaC Copyright (C) 1999-2002 Johannes Gutenberg University Mainz, Germany
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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.
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21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 static unsigned test(void)
31 ex p = expand(pow(pow(x,2)-3*x*y+pow(y,2),4)*pow(3*x-7*y+2,5));
32 ex q = expand(pow(pow(x,2)-3*x*y+pow(y,2),3)*pow(3*x-7*y-2,6));
34 if (result!=expand(pow(pow(x,2)-3*x*y+pow(y,2),3))) {
35 clog << "gcd(expand((x^2-3*x*y+y^2)^4*(3*x-7*y+2)^5),expand((x^2-3*x*y+y^2)^3*(3*x-7*y-2)^6)) erroneously returned " << result << endl;
41 unsigned time_lw_F(void)
48 cout << "timing Lewis-Wester test F (gcd of 2-var polys)" << flush;
49 clog << "-------Lewis-Wester test F (gcd of 2-var polys)" << endl;
52 // correct for very small times:
56 } while ((time=rolex.read())<0.1 && !result);
61 clog << "(no output)" << endl;
65 cout << int(1000*(time/count))*0.001 << 's' << endl;