permlib
0.2.9
Library for permutation computations
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permlib
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dset.h
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// ---------------------------------------------------------------------------
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//
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// This file is part of PermLib.
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//
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// Copyright (c) 2009-2011 Thomas Rehn <thomas@carmen76.de>
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// 3. The name of the author may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// ---------------------------------------------------------------------------
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#ifndef DSET_H_
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#define DSET_H_
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#include <boost/dynamic_bitset.hpp>
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namespace
permlib {
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typedef
boost::dynamic_bitset<> dset;
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template
<
class
PERM>
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struct
DSetAction {
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DSetAction(
unsigned
long
size) : m_tmp(size) {}
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dset
operator()
(
const
PERM
&p,
const
dset& v) {
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apply(p, v, m_tmp);
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return
m_tmp;
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}
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// apply permutation in-place
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void
apply(
const
PERM
&p,
const
dset& v, dset& tmp) {
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tmp.reset();
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for
(
unsigned
int
i = 0; i < tmp.size(); ++i) {
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if
(v[i])
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tmp.set(p / i, 1);
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}
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}
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private
:
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dset m_tmp;
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};
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}
// ns permlib
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#endif
// DSET_H_
permlib::PERM
permlib::DSetAction::operator()
dset operator()(const PERM &p, const dset &v)
default action operator as also used in Transversal<PERM>::TrivialAction
Definition
dset.h:48
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