3 * Implementation of several small and furry utilities. */
6 * GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #ifndef NO_GINAC_NAMESPACE
27 #endif // ndef NO_GINAC_NAMESPACE
29 /** Integer binary logarithm */
30 unsigned log2(unsigned n)
33 for (k = 0; n > 1; n >>= 1) ++k;
37 /** Compare two pointers (just to establish some sort of canonical order).
38 * @return -1, 0, or 1 */
39 int compare_pointers(void const * a, void const * b)
50 // comment skeleton for header files
55 // default constructor, destructor, copy constructor assignment operator and helpers
61 // functions overriding virtual functions from bases classes
64 // new virtual functions which can be overridden by derived classes
67 // non-virtual functions in this class
75 // comment skeleton for implementation files
79 // default constructor, destructor, copy constructor assignment operator and helpers
93 // functions overriding virtual functions from bases classes
101 // new virtual functions which can be overridden by derived classes
109 // non-virtual functions in this class
117 // static member variables
124 #ifndef NO_GINAC_NAMESPACE
126 #endif // ndef NO_GINAC_NAMESPACE