- rotate_31() and golden_hash_ratio() moved to utils.h

[ginac.git] / ginac / utils.cpp

diff --git a/ginac/utils.cpp b/ginac/utils.cpp
index ae0160d43dc0f494067d5667091d636c40e73dc7..0c99ad59976a47a293bd1e7c18f8e1a93556d7f1 100644 (file)
--- a/ginac/utils.cpp
+++ b/ginac/utils.cpp
@@ -2,6 +2,29 @@
  *
  *  Implementation of several small and furry utilities. */
 
+/*
+ *  GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "utils.h"
+
+namespace GiNaC {
+
+/** Integer binary logarithm */
 unsigned log2(unsigned n)
 {
     unsigned k;
@@ -9,6 +32,8 @@ unsigned log2(unsigned n)
     return k;
 }
 
+/** Compare two pointers (just to establish some sort of canonical order).
+ *  @return -1, 0, or 1 */
 int compare_pointers(void const * a, void const * b)
 {
     if (a<b) {
@@ -19,7 +44,8 @@ int compare_pointers(void const * a, void const * b)
     return 0;
 }
 
-// comment skeletton for header files
+
+// comment skeleton for header files
 
 
 // member functions
@@ -44,7 +70,7 @@ int compare_pointers(void const * a, void const * b)
     
 
 
-// comment skeletton for implementation files
+// comment skeleton for implementation files
 
 
 //////////
@@ -93,6 +119,4 @@ int compare_pointers(void const * a, void const * b)
 // private
 // none
 
-
-
-
+} // namespace GiNaC