3 * Provides some routines for generating expressions that are later used as input
4 * in the consistency checks. */
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
24 // For rand() and friends:
29 #ifndef NO_NAMESPACE_GINAC
30 using namespace GiNaC;
31 #endif // ndef NO_NAMESPACE_GINAC
33 /* Create a dense univariate random polynomial in x.
34 * (of the form 9 - 22*a - 17*a^2 + 14*a^3 + 7*a^4 + 7a^5 if degree==5) */
36 dense_univariate_poly(const symbol & x, unsigned degree)
40 for (unsigned i=0; i<=degree; ++i)
41 unipoly += numeric((rand()-RAND_MAX/2))*pow(x,i);
46 /* Create a dense bivariate random polynomial in x1 and x2.
47 * (of the form 9 + 52*x1 - 27*x1^2 + 84*x2 + 7*x2^2 - 12*x1*x2 if degree ==2) */
49 dense_bivariate_poly(const symbol & x1, const symbol & x2, unsigned degree)
53 for (unsigned i1=0; i1<=degree; ++i1)
54 for (unsigned i2=0; i2<=degree-i1; ++i2)
55 bipoly += numeric((rand()-RAND_MAX/2))*pow(x1,i1)*pow(x2,i2);