permlib 0.2.9
Library for permutation computations
random_base_transpose.h
1// ---------------------------------------------------------------------------
2//
3// This file is part of PermLib.
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5// Copyright (c) 2009-2011 Thomas Rehn <thomas@carmen76.de>
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31
32
33#ifndef RBASECHANGE_H_
34#define RBASECHANGE_H_
35
36#include <permlib/change/base_transpose.h>
37#include <permlib/generator/random_schreier_generator.h>
38
39#include <boost/scoped_ptr.hpp>
40
41namespace permlib {
42
44
49template<class PERM, class TRANS>
50class RandomBaseTranspose : public BaseTranspose<PERM,TRANS> {
51protected:
52 typedef typename BaseTranspose<PERM,TRANS>::PERMlist PERMlist;
53
54 virtual Generator<PERM>* setupGenerator(BSGS<PERM,TRANS> &bsgs, unsigned int i, const PERMlist &S_i, const TRANS &U_i) const;
55};
56
57//
58// ---- IMPLEMENTATION
59//
60
61template<class PERM, class TRANS>
62Generator<PERM>* RandomBaseTranspose<PERM,TRANS>::setupGenerator(BSGS<PERM,TRANS> &bsgs, unsigned int i, const PERMlist &S_i, const TRANS &U_i) const {
63 return new RandomSchreierGenerator<PERM,TRANS>(bsgs, i, U_i);
64}
65
66}
67
68#endif // -- RBASECHANGE_H_
abstract base class for base transposition
Definition: base_transpose.h:50
interface for group element generators
Definition: generator.h:40
implementation of a randomized base transposition algorithm
Definition: random_base_transpose.h:50
virtual Generator< PERM > * setupGenerator(BSGS< PERM, TRANS > &bsgs, unsigned int i, const PERMlist &S_i, const TRANS &U_i) const
initializes the specific Schreier Generator that is used for the BaseTranpose implementation
Definition: random_base_transpose.h:62
generates a uniformly distributed random element of
Definition: random_schreier_generator.h:46
Represents a base and strong generating set (BSGS)
Definition: bsgs.h:89