diff options
Diffstat (limited to 'src/2geom/utils.cpp')
| -rw-r--r-- | src/2geom/utils.cpp | 174 |
1 files changed, 87 insertions, 87 deletions
diff --git a/src/2geom/utils.cpp b/src/2geom/utils.cpp index 579718553..f0f42ce01 100644 --- a/src/2geom/utils.cpp +++ b/src/2geom/utils.cpp @@ -1,87 +1,87 @@ -/** Various utility functions. - * - * Copyright 2008 Marco Cecchetti <mrcekets at gmail.com> - * Copyright 2007 Johan Engelen <goejendaagh@zonnet.nl> - * Copyright 2006 Michael G. Sloan <mgsloan@gmail.com> - * - * This library is free software; you can redistribute it and/or - * modify it either under the terms of the GNU Lesser General Public - * License version 2.1 as published by the Free Software Foundation - * (the "LGPL") or, at your option, under the terms of the Mozilla - * Public License Version 1.1 (the "MPL"). If you do not alter this - * notice, a recipient may use your version of this file under either - * the MPL or the LGPL. - * - * You should have received a copy of the LGPL along with this library - * in the file COPYING-LGPL-2.1; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * You should have received a copy of the MPL along with this library - * in the file COPYING-MPL-1.1 - * - * The contents of this file are subject to the Mozilla Public License - * Version 1.1 (the "License"); you may not use this file except in - * compliance with the License. You may obtain a copy of the License at - * http://www.mozilla.org/MPL/ - * - * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY - * OF ANY KIND, either express or implied. See the LGPL or the MPL for - * the specific language governing rights and limitations. - * - */ - - -#include <2geom/utils.h> - - -namespace Geom -{ - -// return a vector that contains all the binomial coefficients of degree n -void binomial_coefficients(std::vector<size_t>& bc, size_t n) -{ - size_t s = n+1; - bc.clear(); - bc.resize(s); - bc[0] = 1; - size_t k; - for (size_t i = 1; i < n; ++i) - { - k = i >> 1; - if (i & 1u) - { - bc[k+1] = bc[k] << 1; - } - for (size_t j = k; j > 0; --j) - { - bc[j] += bc[j-1]; - } - } - s >>= 1; - for (size_t i = 0; i < s; ++i) - { - bc[n-i] = bc[i]; - } -} - -} // end namespace Geom - - - - - - - - - - - -/* - Local Variables: - mode:c++ - c-file-style:"stroustrup" - c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) - indent-tabs-mode:nil - fill-column:99 - End: -*/ -// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 : +/** Various utility functions.
+ *
+ * Copyright 2008 Marco Cecchetti <mrcekets at gmail.com>
+ * Copyright 2007 Johan Engelen <goejendaagh@zonnet.nl>
+ * Copyright 2006 Michael G. Sloan <mgsloan@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ */
+
+
+#include <2geom/utils.h>
+
+
+namespace Geom
+{
+
+// return a vector that contains all the binomial coefficients of degree n
+void binomial_coefficients(std::vector<size_t>& bc, size_t n)
+{
+ size_t s = n+1;
+ bc.clear();
+ bc.resize(s);
+ bc[0] = 1;
+ size_t k;
+ for (size_t i = 1; i < n; ++i)
+ {
+ k = i >> 1;
+ if (i & 1u)
+ {
+ bc[k+1] = bc[k] << 1;
+ }
+ for (size_t j = k; j > 0; --j)
+ {
+ bc[j] += bc[j-1];
+ }
+ }
+ s >>= 1;
+ for (size_t i = 0; i < s; ++i)
+ {
+ bc[n-i] = bc[i];
+ }
+}
+
+} // end namespace Geom
+
+
+
+
+
+
+
+
+
+
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
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