sample20.cpp
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/*
Copyright(c) 2002-2017 Anatoliy Kuznetsov(anatoliy_kuznetsov at yahoo.com)
Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
For more information please visit: http://bitmagic.io
*/
/** \example sample20.cpp
Example for shifting - insertion of bits.
\sa bm::bvector::insert
\sa bm::bvector::shift_right
*/
/*! \file sample20.cpp
\brief Example: bvector<> - bit-shifts
*/
#include <iostream>
#include "bm.h"
#include "bmundef.h" /* clear the pre-proc defines from BM */
using namespace std;
// Utility template function used to print container
template<class T> void PrintContainer(T first, T last)
{
if (first == last)
cout << "<EMPTY SET>";
else
for(;first != last; ++first)
cout << *first << ", ";
cout << endl;
}
int main(void)
{
try
{
bm::bvector<> bv { 1, 10, 100 };
cout << "Source set:";
PrintContainer(bv.first(), bv.end());
// shift the vector right by 1
//
bv.shift_right();
PrintContainer(bv.first(), bv.end()); // 2, 11, 101
// insert 0 bit into position 0 (equivalent of shift_right)
//
bv.insert(0, false);
PrintContainer(bv.first(), bv.end()); // 3, 12, 102
// insert at a random position
bv.insert(4, true);
PrintContainer(bv.first(), bv.end()); // 3, 4, 13, 103
}
catch(std::exception& ex)
{
std::cerr << ex.what() << std::endl;
return 1;
}
return 0;
}
bm.h
Compressed bit-vector bvector<> container, set algebraic methods, traversal iterators.
bmundef.h
pre-processor un-defines to avoid global space pollution (internal)
bm::bvector
Bitvector Bit-vector container with runtime compression of bits.
Definition bm.h:115
bm::bvector::insert
bool insert(size_type n, bool value)
Insert bit into specified position All the vector content after insert position is shifted right.
Definition bm.h:5443
bm::bvector::first
enumerator first() const
Returns enumerator pointing on the first non-zero bit.
Definition bm.h:1871
bm::bvector::shift_right
bool shift_right()
Shift right by 1 bit, fill with zero return carry out.
Definition bm.h:5423
bm::bvector::end
enumerator end() const
Returns enumerator pointing on the next bit after the last.
Definition bm.h:1877
PrintContainer
void PrintContainer(T first, T last)
Definition sample20.cpp:39
main
int main(void)
Definition sample20.cpp:49