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<div class="title">sample2.cpp</div> </div>
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<p>Example demonstrates using set operations AND, OR, XOR, etc.</p><dl class="section see"><dt>See also</dt><dd><a class="el" href="bvsetalgebra_8cpp.html" title="Example: algebra of sets operations.">bvsetalgebra.cpp</a></dd></dl>
<div class="fragment"><div class="line"><span class="comment">/*</span></div>
<div class="line"><span class="comment">Copyright(c) 2002-2017 Anatoliy Kuznetsov(anatoliy_kuznetsov at yahoo.com)</span></div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">Licensed under the Apache License, Version 2.0 (the "License");</span></div>
<div class="line"><span class="comment">you may not use this file except in compliance with the License.</span></div>
<div class="line"><span class="comment">You may obtain a copy of the License at</span></div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment"> http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><span class="comment">distributed under the License is distributed on an "AS IS" BASIS,</span></div>
<div class="line"><span class="comment">WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><span class="comment">See the License for the specific language governing permissions and</span></div>
<div class="line"><span class="comment">limitations under the License.</span></div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">For more information please visit: http://bitmagic.io</span></div>
<div class="line"><span class="comment">*/</span></div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/** \example sample2.cpp</span></div>
<div class="line"><span class="comment"> Example demonstrates using set operations AND, OR, XOR, etc.</span></div>
<div class="line"><span class="comment"> \sa bvsetalgebra.cpp</span></div>
<div class="line"><span class="comment">*/</span></div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/*! \file sample2.cpp</span></div>
<div class="line"><span class="comment"> \brief Example: bvector<> set algebra operations AND, OR, XOR, etc.</span></div>
<div class="line"><span class="comment">*/</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#include <iostream></span></div>
<div class="line"><span class="preprocessor">#include "<a class="code" href="bm_8h.html">bm.h</a>"</span></div>
<div class="line"> </div>
<div class="line"><span class="keyword">using namespace </span>std;</div>
<div class="line"> </div>
<div class="line"><span class="keyword">static</span></div>
<div class="line"><span class="keywordtype">void</span> <a name="a0"></a><a class="code" href="sample2_8cpp.html#ab6c059ad3ebaf673eb5b172691db4e3b">print_bvector</a>(<span class="keyword">const</span> <a name="_a1"></a><a class="code" href="classbm_1_1bvector.html">bm::bvector<></a>& bv)</div>
<div class="line">{</div>
<div class="line"> <a class="code" href="classbm_1_1bvector.html#a405dd9ed048c935c84a5086ec8ba3649">bm::bvector<>::size_type</a> value = bv.<a name="a2"></a><a class="code" href="classbm_1_1bvector.html#a9ab6964e14405327936d183a11dcd455">get_first</a>();</div>
<div class="line"> <span class="keywordflow">do</span></div>
<div class="line"> {</div>
<div class="line"> cout << value;</div>
<div class="line"> value = bv.<a name="a3"></a><a class="code" href="classbm_1_1bvector.html#a3a09e493d97f5a66b6ec4e14e04cf118">get_next</a>(value);</div>
<div class="line"> <span class="keywordflow">if</span> (value)</div>
<div class="line"> {</div>
<div class="line"> cout << <span class="stringliteral">","</span>;</div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">else</span></div>
<div class="line"> {</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> }</div>
<div class="line"> } <span class="keywordflow">while</span>(1);</div>
<div class="line"> cout << endl;</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">int</span> <a name="a4"></a><a class="code" href="sample2_8cpp.html#a840291bc02cba5474a4cb46a9b9566fe">main</a>(<span class="keywordtype">void</span>)</div>
<div class="line">{</div>
<div class="line"> <span class="keywordflow">try</span></div>
<div class="line"> {</div>
<div class="line"> <a class="code" href="classbm_1_1bvector.html">bm::bvector<></a> bv1;</div>
<div class="line"> <a class="code" href="classbm_1_1bvector.html">bm::bvector<></a> bv2;</div>
<div class="line"> <a class="code" href="classbm_1_1bvector.html">bm::bvector<></a> bv3;</div>
<div class="line"> </div>
<div class="line"> bv1.<a name="a5"></a><a class="code" href="classbm_1_1bvector.html#a52b4259a5cc4ebd8953832c696e24f02">set</a>(10);</div>
<div class="line"> bv1.<a class="code" href="classbm_1_1bvector.html#a52b4259a5cc4ebd8953832c696e24f02">set</a>(100);</div>
<div class="line"> bv1.<a class="code" href="classbm_1_1bvector.html#a52b4259a5cc4ebd8953832c696e24f02">set</a>(1000000);</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"> bv2.<a class="code" href="classbm_1_1bvector.html#a52b4259a5cc4ebd8953832c696e24f02">set</a>(10);</div>
<div class="line"> bv2.<a class="code" href="classbm_1_1bvector.html#a52b4259a5cc4ebd8953832c696e24f02">set</a>(100);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Logical AND operation on bv2 (bv1 is the argument)</span></div>
<div class="line"> <span class="comment">// bv2 = bv2 AND bv1</span></div>
<div class="line"> </div>
<div class="line"> bv3 = bv1 & bv2;</div>
<div class="line"> <a class="code" href="sample2_8cpp.html#ab6c059ad3ebaf673eb5b172691db4e3b">print_bvector</a>(bv3);</div>
<div class="line"> </div>
<div class="line"> bv2 &= bv1; <span class="comment">// You also can use: bv2.bit_and(bv1);</span></div>
<div class="line"> <a class="code" href="sample2_8cpp.html#ab6c059ad3ebaf673eb5b172691db4e3b">print_bvector</a>(bv2);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// bv2 = bv2 OR bv1</span></div>
<div class="line"> </div>
<div class="line"> bv3 = bv1 | bv2;</div>
<div class="line"> <a class="code" href="sample2_8cpp.html#ab6c059ad3ebaf673eb5b172691db4e3b">print_bvector</a>(bv3);</div>
<div class="line"> </div>
<div class="line"> bv2 |= bv1; <span class="comment">// You can also use: bv2.bit_or(bv1);</span></div>
<div class="line"> <a class="code" href="sample2_8cpp.html#ab6c059ad3ebaf673eb5b172691db4e3b">print_bvector</a>(bv2);</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"> bv1.<a class="code" href="classbm_1_1bvector.html#a52b4259a5cc4ebd8953832c696e24f02">set</a>(1000000, <span class="keyword">false</span>);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// bv2 = bv2 SUB bv1</span></div>
<div class="line"> </div>
<div class="line"> bv3 = bv2 - bv1;</div>
<div class="line"> <a class="code" href="sample2_8cpp.html#ab6c059ad3ebaf673eb5b172691db4e3b">print_bvector</a>(bv3);</div>
<div class="line"> </div>
<div class="line"> bv2 -= bv1; <span class="comment">// You can also use: bv2.bit_sub(bv1);</span></div>
<div class="line"> <a class="code" href="sample2_8cpp.html#ab6c059ad3ebaf673eb5b172691db4e3b">print_bvector</a>(bv2);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// bv2 XOR bv1</span></div>
<div class="line"> </div>
<div class="line"> bv3 = bv2 ^ bv1;</div>
<div class="line"> <a class="code" href="sample2_8cpp.html#ab6c059ad3ebaf673eb5b172691db4e3b">print_bvector</a>(bv3);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// product of XOR is a mismatch vector (definition of XOR)</span></div>
<div class="line"> <span class="comment">//</span></div>
<div class="line"> {</div>
<div class="line"> <a class="code" href="classbm_1_1bvector.html#a405dd9ed048c935c84a5086ec8ba3649">bm::bvector<>::size_type</a> pos;</div>
<div class="line"> <span class="keywordtype">bool</span> f = bv3.<a name="a6"></a><a class="code" href="classbm_1_1bvector.html#a08093c98bb6dfe27708357801aae7280">find</a>(pos);</div>
<div class="line"> <span class="keywordflow">if</span> (f)</div>
<div class="line"> {</div>
<div class="line"> cout << <span class="stringliteral">"XOR mismatch position = "</span> << pos << endl;</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// if we need to find only first mismatch we don't need a full</span></div>
<div class="line"> <span class="comment">// XOR product, we can use bvector<>::find_first_mismatch()</span></div>
<div class="line"> <span class="comment">//</span></div>
<div class="line"> f = bv2.<a name="a7"></a><a class="code" href="classbm_1_1bvector.html#a8554bf7b4d276acc00cd31c87cc544ec">find_first_mismatch</a>(bv1, pos);</div>
<div class="line"> <span class="keywordflow">if</span> (f)</div>
<div class="line"> {</div>
<div class="line"> cout << <span class="stringliteral">"search mismatch position = "</span> << pos << endl;</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> bv2 ^= bv1; <span class="comment">// You can also use: bv2.bit_xor(bv1);</span></div>
<div class="line"> <a class="code" href="sample2_8cpp.html#ab6c059ad3ebaf673eb5b172691db4e3b">print_bvector</a>(bv2);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// For lexicographical comparison there is set of overloaded</span></div>
<div class="line"> <span class="comment">// operators and function compare (see also bvector<>::equal() )</span></div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">if</span> (bv2 == bv3)</div>
<div class="line"> {</div>
<div class="line"> cerr << <span class="stringliteral">"Equivalent. Comparison result = "</span></div>
<div class="line"> << bv2.compare(bv3) << endl;</div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">else</span></div>
<div class="line"> {</div>
<div class="line"> cout << <span class="stringliteral">"Error."</span> << endl;</div>
<div class="line"> <span class="keywordflow">return</span> 1;</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">catch</span>(std::exception& ex)</div>
<div class="line"> {</div>
<div class="line"> std::cerr << ex.what() << std::endl;</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">return</span> 0;</div>
<div class="line">}</div>
</div><!-- fragment --> </div><!-- contents -->
<div class="ttc" id="asample2_8cpp_html_a840291bc02cba5474a4cb46a9b9566fe"><div class="ttname"><a href="sample2_8cpp.html#a840291bc02cba5474a4cb46a9b9566fe">main</a></div><div class="ttdeci">int main(void)</div><div class="ttdef"><b>Definition:</b> <a href="sample2_8cpp_source.html#l00053">sample2.cpp:53</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_a8554bf7b4d276acc00cd31c87cc544ec"><div class="ttname"><a href="classbm_1_1bvector.html#a8554bf7b4d276acc00cd31c87cc544ec">bm::bvector::find_first_mismatch</a></div><div class="ttdeci">bool find_first_mismatch(const bvector< Alloc > &bvect, size_type &pos, size_type search_to=bm::id_max) const BMNOEXCEPT</div><div class="ttdoc">Find index of first bit different between this and the agr vector.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l03277">bm.h:3277</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html"><div class="ttname"><a href="classbm_1_1bvector.html">bm::bvector<></a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_a52b4259a5cc4ebd8953832c696e24f02"><div class="ttname"><a href="classbm_1_1bvector.html#a52b4259a5cc4ebd8953832c696e24f02">bm::bvector::set</a></div><div class="ttdeci">bvector< Alloc > & set(size_type n, bool val=true)</div><div class="ttdoc">Sets bit n if val is true, clears bit n if val is false.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l03581">bm.h:3581</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_a08093c98bb6dfe27708357801aae7280"><div class="ttname"><a href="classbm_1_1bvector.html#a08093c98bb6dfe27708357801aae7280">bm::bvector::find</a></div><div class="ttdeci">bool find(size_type &pos) const BMNOEXCEPT</div><div class="ttdoc">Finds index of first 1 bit.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l04035">bm.h:4035</a></div></div>
<div class="ttc" id="asample2_8cpp_html_ab6c059ad3ebaf673eb5b172691db4e3b"><div class="ttname"><a href="sample2_8cpp.html#ab6c059ad3ebaf673eb5b172691db4e3b">print_bvector</a></div><div class="ttdeci">static void print_bvector(const bm::bvector<> &bv)</div><div class="ttdef"><b>Definition:</b> <a href="sample2_8cpp_source.html#l00034">sample2.cpp:34</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_a3a09e493d97f5a66b6ec4e14e04cf118"><div class="ttname"><a href="classbm_1_1bvector.html#a3a09e493d97f5a66b6ec4e14e04cf118">bm::bvector::get_next</a></div><div class="ttdeci">size_type get_next(size_type prev) const BMNOEXCEPT</div><div class="ttdoc">Finds the number of the next bit ON.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l01540">bm.h:1540</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_a9ab6964e14405327936d183a11dcd455"><div class="ttname"><a href="classbm_1_1bvector.html#a9ab6964e14405327936d183a11dcd455">bm::bvector::get_first</a></div><div class="ttdeci">size_type get_first() const BMNOEXCEPT</div><div class="ttdoc">find first 1 bit in vector. Function may return 0 and this requires an extra check if bit 0 is actual...</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l01531">bm.h:1531</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_a405dd9ed048c935c84a5086ec8ba3649"><div class="ttname"><a href="classbm_1_1bvector.html#a405dd9ed048c935c84a5086ec8ba3649">bm::bvector::size_type</a></div><div class="ttdeci">bm::id_t size_type</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l00117">bm.h:117</a></div></div>
<div class="ttc" id="abm_8h_html"><div class="ttname"><a href="bm_8h.html">bm.h</a></div><div class="ttdoc">Compressed bit-vector bvector<> container, set algebraic methods, traversal iterators.</div></div>
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