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<p>Example of how to use various bit counting techniques</p><dl class="section see"><dt>See also</dt><dd><a class="el" href="classbm_1_1bvector.html#a3009ba9b116f13f4933a48641f3a695d" title="population cout (count of ON bits)">bm::bvector<>::count()</a> </dd>
<dd>
<a class="el" href="classbm_1_1bvector.html#a99395aaa8ab689455054bda9b261de60" title="Returns count of 1 bits in the given range [left..right] Uses rank-select index to accelerate the sea...">bm::bvector<>::count_range()</a> </dd>
<dd>
<a class="el" href="classbm_1_1bvector.html#ad3e0e88f17cc86b58e006186955c461b" title="Returns count of 1 bits (population) in [0..right] range.">bm::bvector<>::count_to()</a> </dd>
<dd>
<a class="el" href="group__setalgo.html#ga5fb1131811b7b834dfc56a3874667a65" title="Computes bitcount of AND operation of two bitsets.">bm::count_and()</a> </dd>
<dd>
bm::bvector<>::counted_enumerator</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 sample11.cpp</span></div>
<div class="line"><span class="comment"> Example of how to use various bit counting techniques</span></div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment"> \sa bm::bvector<>::count() </span></div>
<div class="line"><span class="comment"> \sa bm::bvector<>::count_range()</span></div>
<div class="line"><span class="comment"> \sa bm::bvector<>::count_to() </span></div>
<div class="line"><span class="comment"> \sa bm::count_and() </span></div>
<div class="line"><span class="comment"> \sa bm::bvector<>::counted_enumerator</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 sample11.cpp</span></div>
<div class="line"><span class="comment"> \brief Example: bvector<> bit-counting techniques analysis</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 <random></span></div>
<div class="line"><span class="preprocessor">#include <memory></span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#include "<a class="code" href="bm_8h.html">bm.h</a>"</span></div>
<div class="line"><span class="preprocessor">#include "<a class="code" href="bmalgo_8h.html">bmalgo.h</a>"</span></div>
<div class="line"><span class="preprocessor">#include "<a class="code" href="bmtimer_8h.html">bmtimer.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="comment">// timing storage for benchmarking</span></div>
<div class="line"><a class="code" href="classbm_1_1chrono__taker.html#add1676592117ed0eaa2fa6279a71b46a">bm::chrono_taker::duration_map_type</a> <a name="a0"></a><a class="code" href="sample11_8cpp.html#a6cb51d150528a5d2d87acb3e88f450bc">timing_map</a>;</div>
<div class="line"> </div>
<div class="line"><span class="keyword">const</span> <span class="keywordtype">unsigned</span> <a name="a1"></a><a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a> = 10000;</div>
<div class="line"><span class="keywordtype">unsigned</span> <a name="a2"></a><a class="code" href="sample11_8cpp.html#a0bda51ccc776fd4e0af7cf8bec7aeb63">vector_max</a> = 400000000;</div>
<div class="line"> </div>
<div class="line">std::random_device <a name="a3"></a><a class="code" href="sample11_8cpp.html#a4d7cf7e96896f9aebdd79fed7c8bab7b">rand_dev</a>; </div>
<div class="line">std::mt19937 <a name="a4"></a><a class="code" href="sample11_8cpp.html#a9b287f91e2adf83c3131895cd6e07195">gen</a>(<a class="code" href="sample11_8cpp.html#a4d7cf7e96896f9aebdd79fed7c8bab7b">rand_dev</a>()); <span class="comment">// mersenne_twister_engine </span></div>
<div class="line">std::uniform_int_distribution<> <a name="a5"></a><a class="code" href="sample11_8cpp.html#a8ae0e64af654605402aa541a12f3cb88">rand_dis</a>(1, <span class="keywordtype">int</span>(<a class="code" href="sample11_8cpp.html#a0bda51ccc776fd4e0af7cf8bec7aeb63">vector_max</a>)); <span class="comment">// generate uniform numebrs for [1, vector_max]</span></div>
<div class="line"> </div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/// generate pseudo-random bit-vector, mix of blocks</span></div>
<div class="line"><span class="comment">/// </span></div>
<div class="line"><span class="comment"></span><span class="keyword">static</span></div>
<div class="line"><span class="keywordtype">void</span> <a name="a6"></a><a class="code" href="sample11_8cpp.html#ab7285eede6cb5443b9f6544fc25dc4b0">generate_bvector</a>(<a name="_a7"></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> i, j;</div>
<div class="line"> <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="sample11_8cpp.html#a0bda51ccc776fd4e0af7cf8bec7aeb63">vector_max</a>;)</div>
<div class="line"> {</div>
<div class="line"> <span class="comment">// generate bit-blocks</span></div>
<div class="line"> <span class="keywordflow">for</span> (j = 0; j < 65535*8; i += 10, j++)</div>
<div class="line"> {</div>
<div class="line"> bv.<a name="a8"></a><a class="code" href="classbm_1_1bvector.html#a52b4259a5cc4ebd8953832c696e24f02">set</a>(i);</div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">if</span> (i > <a class="code" href="sample11_8cpp.html#a0bda51ccc776fd4e0af7cf8bec7aeb63">vector_max</a>)</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> <span class="comment">// generate GAP (compressed) blocks</span></div>
<div class="line"> <span class="keywordflow">for</span> (j = 0; j < 65535; i += 120, j++)</div>
<div class="line"> {</div>
<div class="line"> <span class="keywordtype">unsigned</span> len = rand() % 64;</div>
<div class="line"> bv.<a name="a9"></a><a class="code" href="classbm_1_1bvector.html#aafb2ecaa1a55856533e6b4afbf788eae">set_range</a>(i, i + len);</div>
<div class="line"> i += len;</div>
<div class="line"> <span class="keywordflow">if</span> (i > <a class="code" href="sample11_8cpp.html#a0bda51ccc776fd4e0af7cf8bec7aeb63">vector_max</a>)</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// compress vector</span></div>
<div class="line"> <a name="a10"></a><a class="code" href="bm_8h.html#ad9736d9521d713fa5d48859aa720bfdd">BM_DECLARE_TEMP_BLOCK</a>(tb)</div>
<div class="line"> bv.<a name="a11"></a><a class="code" href="classbm_1_1bvector.html#a622e6827d799a561e2f0db28f7ac19d2">optimize</a>(tb);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// compute bit-vector statistics</span></div>
<div class="line"> <a name="_a12"></a><a class="code" href="structbm_1_1bvector_1_1statistics.html">bm::bvector<>::statistics</a> st;</div>
<div class="line"> bv.<a name="a13"></a><a class="code" href="classbm_1_1bvector.html#af30532c371bfdc8e2ba02bc2115b004d">calc_stat</a>(&st);</div>
<div class="line"> </div>
<div class="line"> std::cout << <span class="stringliteral">"Bit-vector statistics: GAP (compressed blocks)="</span> << st.<a name="a14"></a><a class="code" href="structbm_1_1bv__statistics.html#a68582594950732906ddea7a99f8cd0b7">gap_blocks</a></div>
<div class="line"> << <span class="stringliteral">", BIT (uncompressed blocks)="</span> << st.<a name="a15"></a><a class="code" href="structbm_1_1bv__statistics.html#a7be7eba0cd58b422085b2c8c75c7e188">bit_blocks</a></div>
<div class="line"> << std::endl << std::endl;</div>
<div class="line">}</div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/// "pre-heat" CPU to minimize dynamic overclocking effects</span></div>
<div class="line"><span class="comment">///</span></div>
<div class="line"><span class="comment"></span><span class="keyword">static</span></div>
<div class="line"><a class="code" href="classbm_1_1bvector.html#a405dd9ed048c935c84a5086ec8ba3649">bm::bvector<>::size_type</a> <a name="a16"></a><a class="code" href="sample11_8cpp.html#a48ceb6492f4796160706cf8565472ff3">pre_heat</a>(<span class="keyword">const</span> <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> cnt = 0;</div>
<div class="line"> <a class="code" href="classbm_1_1bvector.html#a405dd9ed048c935c84a5086ec8ba3649">bm::bvector<>::size_type</a> m = 1;</div>
<div class="line"> <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a>; ++i)</div>
<div class="line"> {</div>
<div class="line"> cnt += bv.<a name="a17"></a><a class="code" href="classbm_1_1bvector.html#a3009ba9b116f13f4933a48641f3a695d">count</a>();</div>
<div class="line"> m+=cnt*cnt;</div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">return</span> m;</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/// simple population count for the whole vector</span></div>
<div class="line"><span class="comment">///</span></div>
<div class="line"><span class="comment"></span><span class="keyword">static</span></div>
<div class="line"><span class="keywordtype">void</span> <a name="a18"></a><a class="code" href="sample11_8cpp.html#ab25c9ea3f03a5bdc900317e043b8bdaa">bv_count_test</a>(<span class="keyword">const</span> <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> cnt = 0;</div>
<div class="line"> </div>
<div class="line"> {</div>
<div class="line"> <a name="_a19"></a><a class="code" href="classbm_1_1chrono__taker.html">bm::chrono_taker</a> tt1(<span class="stringliteral">"1. bvector<>::count()"</span>, <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a> / 2, &<a class="code" href="sample11_8cpp.html#a6cb51d150528a5d2d87acb3e88f450bc">timing_map</a>);</div>
<div class="line"> <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a> / 2; ++i)</div>
<div class="line"> {</div>
<div class="line"> cnt += bv.<a class="code" href="classbm_1_1bvector.html#a3009ba9b116f13f4933a48641f3a695d">count</a>();</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> <span class="comment">// this is mostly to prevent compiler to optimize loop away</span></div>
<div class="line"> std::cout << <span class="stringliteral">"Count test finished."</span> << cnt << <span class="stringliteral">"\r"</span>;</div>
<div class="line">}</div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/// count_range() test</span></div>
<div class="line"><span class="comment">///</span></div>
<div class="line"><span class="comment"></span><span class="keyword">static</span></div>
<div class="line"><span class="keywordtype">void</span> <a name="a20"></a><a class="code" href="sample11_8cpp.html#a35469dd094dc5eaf7328f2b36d7c04bd">bv_count_range</a>(<span class="keyword">const</span> <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> cnt = 0;</div>
<div class="line"> {</div>
<div class="line"> <a class="code" href="classbm_1_1chrono__taker.html">bm::chrono_taker</a> tt1(<span class="stringliteral">"2. bvector<>::count_range()"</span>, <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a>, &<a class="code" href="sample11_8cpp.html#a6cb51d150528a5d2d87acb3e88f450bc">timing_map</a>);</div>
<div class="line"> <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a>; ++i)</div>
<div class="line"> {</div>
<div class="line"> <span class="keywordtype">unsigned</span> from = unsigned(<a class="code" href="sample11_8cpp.html#a8ae0e64af654605402aa541a12f3cb88">rand_dis</a>(<a class="code" href="sample11_8cpp.html#a9b287f91e2adf83c3131895cd6e07195">gen</a>));</div>
<div class="line"> <span class="keywordtype">unsigned</span> to = unsigned(<a class="code" href="sample11_8cpp.html#a8ae0e64af654605402aa541a12f3cb88">rand_dis</a>(<a class="code" href="sample11_8cpp.html#a9b287f91e2adf83c3131895cd6e07195">gen</a>));</div>
<div class="line"> <span class="keywordflow">if</span> (from > to)</div>
<div class="line"> swap(from, to);</div>
<div class="line"> cnt += bv.<a name="a21"></a><a class="code" href="classbm_1_1bvector.html#a99395aaa8ab689455054bda9b261de60">count_range</a>(from, to);</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> <span class="comment">// this is mostly to prevent compiler to optimize loop away</span></div>
<div class="line"> std::cout << <span class="stringliteral">"Count range test finished."</span> << cnt << <span class="stringliteral">"\r"</span>;</div>
<div class="line">}</div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/// count_range() test using pre-calculated blocks bit count</span></div>
<div class="line"><span class="comment">///</span></div>
<div class="line"><span class="comment"></span><span class="keyword">static</span></div>
<div class="line"><span class="keywordtype">void</span> <a name="a22"></a><a class="code" href="sample11_8cpp.html#a4d9edd508c01ff7825dd1dd6c5cb159d">bv_count_range_acc</a>(<span class="keyword">const</span> <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> cnt = 0;</div>
<div class="line"> </div>
<div class="line"> std::unique_ptr<bm::bvector<>::rs_index_type> rs(<span class="keyword">new</span> <a class="code" href="classbm_1_1bvector.html#ac9ed62250af37ade811aaf20b7a8d9a2">bm::bvector<>::rs_index_type</a>());</div>
<div class="line"> bv.<a name="a23"></a><a class="code" href="classbm_1_1bvector.html#adfb63744a9d6039d9e8daa38cf21e3c6">build_rs_index</a>(rs.get());</div>
<div class="line"> </div>
<div class="line"> {</div>
<div class="line"> <a class="code" href="classbm_1_1chrono__taker.html">bm::chrono_taker</a> tt1(<span class="stringliteral">"3. bvector<>::count_range() with rs_index"</span>, <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a>, &<a class="code" href="sample11_8cpp.html#a6cb51d150528a5d2d87acb3e88f450bc">timing_map</a>);</div>
<div class="line"> cnt = 0;</div>
<div class="line"> <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a>; ++i)</div>
<div class="line"> {</div>
<div class="line"> <span class="keywordtype">unsigned</span> from = unsigned(<a class="code" href="sample11_8cpp.html#a8ae0e64af654605402aa541a12f3cb88">rand_dis</a>(<a class="code" href="sample11_8cpp.html#a9b287f91e2adf83c3131895cd6e07195">gen</a>));</div>
<div class="line"> <span class="keywordtype">unsigned</span> to = unsigned(<a class="code" href="sample11_8cpp.html#a8ae0e64af654605402aa541a12f3cb88">rand_dis</a>(<a class="code" href="sample11_8cpp.html#a9b287f91e2adf83c3131895cd6e07195">gen</a>));</div>
<div class="line"> <span class="keywordflow">if</span> (from > to)</div>
<div class="line"> swap(from, to);</div>
<div class="line"> cnt += bv.<a class="code" href="classbm_1_1bvector.html#a99395aaa8ab689455054bda9b261de60">count_range</a>(from, to, *rs); <span class="comment">// use rs index for acceleration</span></div>
<div class="line"> } <span class="comment">// for i</span></div>
<div class="line"> }</div>
<div class="line"> <span class="comment">// this is mostly to prevent compiler to optimize loop away</span></div>
<div class="line"> std::cout << <span class="stringliteral">"Count range with blocks test finished."</span> << cnt << <span class="stringliteral">"\r"</span>;</div>
<div class="line">}</div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/// count_to() test using pre-calculated rank-select index</span></div>
<div class="line"><span class="comment">///</span></div>
<div class="line"><span class="comment"></span><span class="keyword">static</span></div>
<div class="line"><span class="keywordtype">void</span> <a name="a24"></a><a class="code" href="sample11_8cpp.html#aee1d3b9b188e54f8b1fd35e8362f3b7c">bv_count_to_acc</a>(<span class="keyword">const</span> <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> cnt = 0;</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// build a block population count list, used for count_to() acceleration</span></div>
<div class="line"> std::unique_ptr<bm::bvector<>::rs_index_type> rs(<span class="keyword">new</span> <a class="code" href="classbm_1_1bvector.html#ac9ed62250af37ade811aaf20b7a8d9a2">bm::bvector<>::rs_index_type</a>());</div>
<div class="line"> bv.<a class="code" href="classbm_1_1bvector.html#adfb63744a9d6039d9e8daa38cf21e3c6">build_rs_index</a>(rs.get());</div>
<div class="line"> </div>
<div class="line"> {</div>
<div class="line"> <a class="code" href="classbm_1_1chrono__taker.html">bm::chrono_taker</a> tt1(<span class="stringliteral">"4. bvector<>::count_to() with rs_index"</span>, <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a>, &<a class="code" href="sample11_8cpp.html#a6cb51d150528a5d2d87acb3e88f450bc">timing_map</a>);</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a>; ++i)</div>
<div class="line"> {</div>
<div class="line"> <span class="keywordtype">unsigned</span> to = unsigned(<a class="code" href="sample11_8cpp.html#a8ae0e64af654605402aa541a12f3cb88">rand_dis</a>(<a class="code" href="sample11_8cpp.html#a9b287f91e2adf83c3131895cd6e07195">gen</a>));</div>
<div class="line"> cnt += bv.<a name="a25"></a><a class="code" href="classbm_1_1bvector.html#ad3e0e88f17cc86b58e006186955c461b">count_to</a>(to, *rs); <span class="comment">// use rank-select index for acceleration</span></div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> <span class="comment">// this is mostly to prevent compiler to optimize loop away</span></div>
<div class="line"> std::cout << <span class="stringliteral">"Count to with blocks test finished."</span> << cnt << <span class="stringliteral">"\r"</span>;</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/// count_range implemented via two count_to() calls using pre-calculated</span></div>
<div class="line"><span class="comment">/// rank-select index</span></div>
<div class="line"><span class="comment">///</span></div>
<div class="line"><span class="comment"></span><span class="keyword">static</span></div>
<div class="line"><span class="keywordtype">void</span> <a name="a26"></a><a class="code" href="sample11_8cpp.html#a4c3aa36d9bdcf58161571ffb69f5211a">bv_count_to_range_acc</a>(<span class="keyword">const</span> <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> cnt = 0;</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// build a block population count list, used for count_to() acceleration</span></div>
<div class="line"> std::unique_ptr<bm::bvector<>::rs_index_type> rs(<span class="keyword">new</span> <a class="code" href="classbm_1_1bvector.html#ac9ed62250af37ade811aaf20b7a8d9a2">bm::bvector<>::rs_index_type</a>());</div>
<div class="line"> bv.<a class="code" href="classbm_1_1bvector.html#adfb63744a9d6039d9e8daa38cf21e3c6">build_rs_index</a>(rs.get());</div>
<div class="line"> </div>
<div class="line"> {</div>
<div class="line"> <a class="code" href="classbm_1_1chrono__taker.html">bm::chrono_taker</a> tt1(<span class="stringliteral">"5. bvector<>::count_to to simulate count_range()"</span>, <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a>, &<a class="code" href="sample11_8cpp.html#a6cb51d150528a5d2d87acb3e88f450bc">timing_map</a>);</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a>; ++i)</div>
<div class="line"> {</div>
<div class="line"> <span class="keywordtype">unsigned</span> from = unsigned(<a class="code" href="sample11_8cpp.html#a8ae0e64af654605402aa541a12f3cb88">rand_dis</a>(<a class="code" href="sample11_8cpp.html#a9b287f91e2adf83c3131895cd6e07195">gen</a>));</div>
<div class="line"> <span class="keywordtype">unsigned</span> to = unsigned(<a class="code" href="sample11_8cpp.html#a8ae0e64af654605402aa541a12f3cb88">rand_dis</a>(<a class="code" href="sample11_8cpp.html#a9b287f91e2adf83c3131895cd6e07195">gen</a>));</div>
<div class="line"> <span class="keywordflow">if</span> (from > to)</div>
<div class="line"> swap(from, to);</div>
<div class="line"> </div>
<div class="line"> <a class="code" href="classbm_1_1bvector.html#a405dd9ed048c935c84a5086ec8ba3649">bm::bvector<>::size_type</a> cnt_to = bv.<a class="code" href="classbm_1_1bvector.html#ad3e0e88f17cc86b58e006186955c461b">count_to</a>(to, *rs);</div>
<div class="line"> <a class="code" href="classbm_1_1bvector.html#a405dd9ed048c935c84a5086ec8ba3649">bm::bvector<>::size_type</a> cnt_from = bv.<a class="code" href="classbm_1_1bvector.html#ad3e0e88f17cc86b58e006186955c461b">count_to</a>(from - 1, *rs);</div>
<div class="line"> <a class="code" href="classbm_1_1bvector.html#a405dd9ed048c935c84a5086ec8ba3649">bm::bvector<>::size_type</a> cnt_r = cnt_to - cnt_from;</div>
<div class="line"> cnt += cnt_r;</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> <span class="comment">// this is mostly to prevent compiler to optimize loop away</span></div>
<div class="line"> std::cout << <span class="stringliteral">"Count range via count_to test finished."</span> << cnt << <span class="stringliteral">"\r"</span>;</div>
<div class="line">}</div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/// count_range implemented via bm::count_and</span></div>
<div class="line"><span class="comment">///</span></div>
<div class="line"><span class="comment">/// this method can be used, when we need co compute multiple ranges in one call</span></div>
<div class="line"><span class="comment">///</span></div>
<div class="line"><span class="comment"></span><span class="keyword">static</span></div>
<div class="line"><span class="keywordtype">void</span> <a name="a27"></a><a class="code" href="sample11_8cpp.html#aed38ada83d28bf639a9c13a307626b8b">bv_count_and</a>(<span class="keyword">const</span> <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> cnt = 0;</div>
<div class="line"> {</div>
<div class="line"> <a class="code" href="classbm_1_1chrono__taker.html">bm::chrono_taker</a> tt1(<span class="stringliteral">"6. bm::count_and with mask vector"</span>, <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a>, &<a class="code" href="sample11_8cpp.html#a6cb51d150528a5d2d87acb3e88f450bc">timing_map</a>);</div>
<div class="line"> </div>
<div class="line"> <a class="code" href="classbm_1_1bvector.html">bm::bvector<></a> mask_bv(<a name="a28"></a><a class="code" href="group__bvector.html#ggad0b87b3b7292383a864d27feaf1c9effa7fe09d1d7c62a813db922c396c0cbc9c">bm::BM_GAP</a>); <span class="comment">// use compressed mask, better seluts on long ranges</span></div>
<div class="line"> <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a>; ++i)</div>
<div class="line"> {</div>
<div class="line"> <span class="keywordtype">unsigned</span> from = unsigned(<a class="code" href="sample11_8cpp.html#a8ae0e64af654605402aa541a12f3cb88">rand_dis</a>(<a class="code" href="sample11_8cpp.html#a9b287f91e2adf83c3131895cd6e07195">gen</a>));</div>
<div class="line"> <span class="keywordtype">unsigned</span> to = unsigned(<a class="code" href="sample11_8cpp.html#a8ae0e64af654605402aa541a12f3cb88">rand_dis</a>(<a class="code" href="sample11_8cpp.html#a9b287f91e2adf83c3131895cd6e07195">gen</a>));</div>
<div class="line"> <span class="keywordflow">if</span> (from > to)</div>
<div class="line"> swap(from, to);</div>
<div class="line"> </div>
<div class="line"> mask_bv.set_range(from, to, <span class="keyword">true</span>); <span class="comment">// set mask vector</span></div>
<div class="line"> </div>
<div class="line"> cnt += <a name="a29"></a><a class="code" href="group__setalgo.html#ga5fb1131811b7b834dfc56a3874667a65">bm::count_and</a>(bv, mask_bv);</div>
<div class="line"> mask_bv.clear(<span class="keyword">true</span>); <span class="comment">// clear and free memory (faster)</span></div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> <span class="comment">// this is mostly to prevent compiler to optimize loop away</span></div>
<div class="line"> std::cout << <span class="stringliteral">"count AND finished."</span> << cnt << <span class="stringliteral">"\r"</span>;</div>
<div class="line">}</div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/// count_to implemented via bm::bvector<>::counted_enumerator</span></div>
<div class="line"><span class="comment">///</span></div>
<div class="line"><span class="comment">/// Counted enumerator is an iterator automata, which counts the running population count </span></div>
<div class="line"><span class="comment">/// along the iteration sequence</span></div>
<div class="line"><span class="comment">///</span></div>
<div class="line"><span class="comment"></span><span class="keyword">static</span></div>
<div class="line"><span class="keywordtype">void</span> <a name="a30"></a><a class="code" href="sample11_8cpp.html#af4945f066e89c9bc289f6ce7dc60da4d">bv_counted_enumerator</a>(<span class="keyword">const</span> <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> cnt = 0;</div>
<div class="line"> {</div>
<div class="line"> <span class="comment">// This is a slow method so we use less iterators</span></div>
<div class="line"> <a class="code" href="classbm_1_1chrono__taker.html">bm::chrono_taker</a> tt1(<span class="stringliteral">"7. bm::bvector<>::counted_enumerator"</span>, <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a>/20, &<a class="code" href="sample11_8cpp.html#a6cb51d150528a5d2d87acb3e88f450bc">timing_map</a>);</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < <a class="code" href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a>/20; ++i)</div>
<div class="line"> {</div>
<div class="line"> <span class="keywordtype">unsigned</span> to = unsigned(<a class="code" href="sample11_8cpp.html#a8ae0e64af654605402aa541a12f3cb88">rand_dis</a>(<a class="code" href="sample11_8cpp.html#a9b287f91e2adf83c3131895cd6e07195">gen</a>));</div>
<div class="line"> <a name="_a31"></a><a class="code" href="classbm_1_1bvector_1_1counted__enumerator.html">bm::bvector<>::counted_enumerator</a> en = bv.<a name="a32"></a><a class="code" href="classbm_1_1bvector.html#a86b939f3aed555dc073e8c26e9efea71">first</a>();</div>
<div class="line"> <span class="keywordflow">for</span> (; en.<a name="a33"></a><a class="code" href="classbm_1_1bvector_1_1iterator__base.html#a3f6af7f5b46c0219b28916187d302c43">valid</a>(); ++en)</div>
<div class="line"> {</div>
<div class="line"> <span class="keywordflow">if</span> (*en > to)</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> }</div>
<div class="line"> cnt += en.<a name="a34"></a><a class="code" href="classbm_1_1bvector_1_1counted__enumerator.html#a30a400c9f580df410961d3818fcbb66f">count</a>();</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> std::cout << <span class="stringliteral">"counted_enumerator finished."</span> << cnt << <span class="stringliteral">"\r"</span>;</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">int</span> <a name="a35"></a><a class="code" href="sample11_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> bv;</div>
<div class="line"> <a class="code" href="sample11_8cpp.html#ab7285eede6cb5443b9f6544fc25dc4b0">generate_bvector</a>(bv);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment"> /// pre-heat CPU to minimize dynamic overclocking</span></div>
<div class="line"><span class="comment"></span> <span class="keywordtype">unsigned</span> s = <a class="code" href="sample11_8cpp.html#a48ceb6492f4796160706cf8565472ff3">pre_heat</a>(bv);</div>
<div class="line"> std::cout << s << <span class="stringliteral">"\r"</span>;</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Test 1.</span></div>
<div class="line"> <span class="comment">// Uses plain bvector<>::count() to compute global population count</span></div>
<div class="line"> <span class="comment">// This function would benefit from SIMD (SSE42 / AVX2) acceleration</span></div>
<div class="line"> <span class="comment">//</span></div>
<div class="line"> <a class="code" href="sample11_8cpp.html#ab25c9ea3f03a5bdc900317e043b8bdaa">bv_count_test</a>(bv);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Test 2.</span></div>
<div class="line"> <span class="comment">// Uses bvector<>::count_range() to compute population count in a randomly generated</span></div>
<div class="line"> <span class="comment">// region of a bit-vector.</span></div>
<div class="line"> <span class="comment">// This is should be naturally faster than Test 1, because it range is less than the whole</span></div>
<div class="line"> <span class="comment">//</span></div>
<div class="line"> <a class="code" href="sample11_8cpp.html#a35469dd094dc5eaf7328f2b36d7c04bd">bv_count_range</a>(bv);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Test 3.</span></div>
<div class="line"> <span class="comment">// Uses bvector<>::count_range() together with bvector<>::count_blocks() </span></div>
<div class="line"> <span class="comment">// (pre-calculated bit-count for each block).</span></div>
<div class="line"> <span class="comment">// It make sense to use this method if bit-vector is constant (or chnages infrequently)</span></div>
<div class="line"> <span class="comment">// and we need to do many range counting calculations</span></div>
<div class="line"> <span class="comment">//</span></div>
<div class="line"> <a class="code" href="sample11_8cpp.html#a4d9edd508c01ff7825dd1dd6c5cb159d">bv_count_range_acc</a>(bv);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Test 4.</span></div>
<div class="line"> <span class="comment">// Uses bvector<>::count_to() to compute population count to a specified element.</span></div>
<div class="line"> <span class="comment">// Equivalent of count_range(0, to);</span></div>
<div class="line"> <span class="comment">// This method uses acceleration structure using bvector<>::running_count_blocks()</span></div>
<div class="line"> <span class="comment">// It is similar to count_range acceleration, but uses a different (faster) algorithm</span></div>
<div class="line"> <span class="comment">//</span></div>
<div class="line"> <a class="code" href="sample11_8cpp.html#aee1d3b9b188e54f8b1fd35e8362f3b7c">bv_count_to_acc</a>(bv);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Test 5.</span></div>
<div class="line"> <span class="comment">// Uses bvector<>::count_to() twice to simulate count_range()</span></div>
<div class="line"> <span class="comment">// using counting difference:</span></div>
<div class="line"> <span class="comment">// count_r = count_to(0, from) - count_to(0, to-1)</span></div>
<div class="line"> <span class="comment">// This method can actually be faster than count_range()</span></div>
<div class="line"> <span class="comment">//</span></div>
<div class="line"> <a class="code" href="sample11_8cpp.html#a4c3aa36d9bdcf58161571ffb69f5211a">bv_count_to_range_acc</a>(bv);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Test 6.</span></div>
<div class="line"> <span class="comment">// Compute range population count via a mask vector and logical AND operation.</span></div>
<div class="line"> <span class="comment">// Not the fastest method, but can be useful, when multiple ranges needs to be computed</span></div>
<div class="line"> <span class="comment">//</span></div>
<div class="line"> <a class="code" href="sample11_8cpp.html#aed38ada83d28bf639a9c13a307626b8b">bv_count_and</a>(bv);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Test 7.</span></div>
<div class="line"> <span class="comment">// Compute cout using counted_enumerator iterator</span></div>
<div class="line"> <span class="comment">// method combines iteratrion over bit vector and sliding population count</span></div>
<div class="line"> <a class="code" href="sample11_8cpp.html#af4945f066e89c9bc289f6ce7dc60da4d">bv_counted_enumerator</a>(bv);</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"> <span class="comment">// print all test timing results</span></div>
<div class="line"> <span class="comment">//</span></div>
<div class="line"> std::cout << <span class="stringliteral">" "</span></div>
<div class="line"> << std::endl;</div>
<div class="line"> </div>
<div class="line"> <a name="a36"></a><a class="code" href="classbm_1_1chrono__taker.html#a30b45453d952d14afe56c29087970899">bm::chrono_taker::print_duration_map</a>(<a class="code" href="sample11_8cpp.html#a6cb51d150528a5d2d87acb3e88f450bc">timing_map</a>, <a name="a37"></a><a class="code" href="classbm_1_1chrono__taker.html#a9a41e5f2fe48ba472fd77a1dbd86457dad530ca7863ce7e60f4fa221e1dfa64a2">bm::chrono_taker::ct_ops_per_sec</a>);</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"> <span class="keywordflow">return</span> 1;</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">return</span> 0;</div>
<div class="line">}</div>
<div class="line"> </div>
</div><!-- fragment --> </div><!-- contents -->
<div class="ttc" id="asample11_8cpp_html_a48ceb6492f4796160706cf8565472ff3"><div class="ttname"><a href="sample11_8cpp.html#a48ceb6492f4796160706cf8565472ff3">pre_heat</a></div><div class="ttdeci">static bm::bvector ::size_type pre_heat(const bm::bvector<> &bv)</div><div class="ttdoc">"pre-heat" CPU to minimize dynamic overclocking effects</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00096">sample11.cpp:96</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_aafb2ecaa1a55856533e6b4afbf788eae"><div class="ttname"><a href="classbm_1_1bvector.html#aafb2ecaa1a55856533e6b4afbf788eae">bm::bvector::set_range</a></div><div class="ttdeci">bvector< Alloc > & set_range(size_type left, size_type right, bool value=true)</div><div class="ttdoc">Sets all bits in the specified closed interval [left,right] Interval must be inside the bvector's siz...</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l02158">bm.h:2158</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_af30532c371bfdc8e2ba02bc2115b004d"><div class="ttname"><a href="classbm_1_1bvector.html#af30532c371bfdc8e2ba02bc2115b004d">bm::bvector::calc_stat</a></div><div class="ttdeci">void calc_stat(struct bm::bvector< Alloc >::statistics *st) const BMNOEXCEPT</div><div class="ttdoc">Calculates bitvector statistics.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l03393">bm.h:3393</a></div></div>
<div class="ttc" id="asample11_8cpp_html_ab7285eede6cb5443b9f6544fc25dc4b0"><div class="ttname"><a href="sample11_8cpp.html#ab7285eede6cb5443b9f6544fc25dc4b0">generate_bvector</a></div><div class="ttdeci">static void generate_bvector(bm::bvector<> &bv)</div><div class="ttdoc">generate pseudo-random bit-vector, mix of blocks</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00057">sample11.cpp:57</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_ac9ed62250af37ade811aaf20b7a8d9a2"><div class="ttname"><a href="classbm_1_1bvector.html#ac9ed62250af37ade811aaf20b7a8d9a2">bm::bvector::rs_index_type</a></div><div class="ttdeci">rs_index< allocator_type > rs_index_type</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l00831">bm.h:831</a></div></div>
<div class="ttc" id="asample11_8cpp_html_a12d500a3c5d539076999df209ab93064"><div class="ttname"><a href="sample11_8cpp.html#a12d500a3c5d539076999df209ab93064">benchmark_count</a></div><div class="ttdeci">const unsigned benchmark_count</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00046">sample11.cpp:46</a></div></div>
<div class="ttc" id="asample11_8cpp_html_a6cb51d150528a5d2d87acb3e88f450bc"><div class="ttname"><a href="sample11_8cpp.html#a6cb51d150528a5d2d87acb3e88f450bc">timing_map</a></div><div class="ttdeci">bm::chrono_taker::duration_map_type timing_map</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00044">sample11.cpp:44</a></div></div>
<div class="ttc" id="aclassbm_1_1chrono__taker_html"><div class="ttname"><a href="classbm_1_1chrono__taker.html">bm::chrono_taker</a></div><div class="ttdoc">Utility class to collect performance measurements and statistics.</div><div class="ttdef"><b>Definition:</b> <a href="bmtimer_8h_source.html#l00039">bmtimer.h:39</a></div></div>
<div class="ttc" id="asample11_8cpp_html_af4945f066e89c9bc289f6ce7dc60da4d"><div class="ttname"><a href="sample11_8cpp.html#af4945f066e89c9bc289f6ce7dc60da4d">bv_counted_enumerator</a></div><div class="ttdeci">static void bv_counted_enumerator(const bm::bvector<> &bv)</div><div class="ttdoc">count_to implemented via bm::bvector<>::counted_enumerator</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00267">sample11.cpp:267</a></div></div>
<div class="ttc" id="astructbm_1_1bv__statistics_html_a7be7eba0cd58b422085b2c8c75c7e188"><div class="ttname"><a href="structbm_1_1bv__statistics.html#a7be7eba0cd58b422085b2c8c75c7e188">bm::bv_statistics::bit_blocks</a></div><div class="ttdeci">size_t bit_blocks</div><div class="ttdoc">Number of bit blocks.</div><div class="ttdef"><b>Definition:</b> <a href="bmfunc_8h_source.html#l00056">bmfunc.h:56</a></div></div>
<div class="ttc" id="abm_8h_html_ad9736d9521d713fa5d48859aa720bfdd"><div class="ttname"><a href="bm_8h.html#ad9736d9521d713fa5d48859aa720bfdd">BM_DECLARE_TEMP_BLOCK</a></div><div class="ttdeci">#define BM_DECLARE_TEMP_BLOCK(x)</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l00047">bm.h:47</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_a99395aaa8ab689455054bda9b261de60"><div class="ttname"><a href="classbm_1_1bvector.html#a99395aaa8ab689455054bda9b261de60">bm::bvector::count_range</a></div><div class="ttdeci">size_type count_range(size_type left, size_type right, const rs_index_type &rs_idx) const BMNOEXCEPT</div><div class="ttdoc">Returns count of 1 bits in the given range [left..right] Uses rank-select index to accelerate the sea...</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l02959">bm.h:2959</a></div></div>
<div class="ttc" id="asample11_8cpp_html_aee1d3b9b188e54f8b1fd35e8362f3b7c"><div class="ttname"><a href="sample11_8cpp.html#aee1d3b9b188e54f8b1fd35e8362f3b7c">bv_count_to_acc</a></div><div class="ttdeci">static void bv_count_to_acc(const bm::bvector<> &bv)</div><div class="ttdoc">count_to() test using pre-calculated rank-select index</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00178">sample11.cpp:178</a></div></div>
<div class="ttc" id="asample11_8cpp_html_ab25c9ea3f03a5bdc900317e043b8bdaa"><div class="ttname"><a href="sample11_8cpp.html#ab25c9ea3f03a5bdc900317e043b8bdaa">bv_count_test</a></div><div class="ttdeci">static void bv_count_test(const bm::bvector<> &bv)</div><div class="ttdoc">simple population count for the whole vector</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00113">sample11.cpp:113</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_1_1counted__enumerator_html_a30a400c9f580df410961d3818fcbb66f"><div class="ttname"><a href="classbm_1_1bvector_1_1counted__enumerator.html#a30a400c9f580df410961d3818fcbb66f">bm::bvector::counted_enumerator::count</a></div><div class="ttdeci">size_type count() const BMNOEXCEPT</div><div class="ttdoc">Number of bits ON starting from the .</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l00757">bm.h:757</a></div></div>
<div class="ttc" id="asample11_8cpp_html_a0bda51ccc776fd4e0af7cf8bec7aeb63"><div class="ttname"><a href="sample11_8cpp.html#a0bda51ccc776fd4e0af7cf8bec7aeb63">vector_max</a></div><div class="ttdeci">unsigned vector_max</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00047">sample11.cpp:47</a></div></div>
<div class="ttc" id="abmalgo_8h_html"><div class="ttname"><a href="bmalgo_8h.html">bmalgo.h</a></div><div class="ttdoc">Algorithms for bvector<> (main include)</div></div>
<div class="ttc" id="asample11_8cpp_html_aed38ada83d28bf639a9c13a307626b8b"><div class="ttname"><a href="sample11_8cpp.html#aed38ada83d28bf639a9c13a307626b8b">bv_count_and</a></div><div class="ttdeci">static void bv_count_and(const bm::bvector<> &bv)</div><div class="ttdoc">count_range implemented via bm::count_and</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00237">sample11.cpp:237</a></div></div>
<div class="ttc" id="astructbm_1_1bv__statistics_html_a68582594950732906ddea7a99f8cd0b7"><div class="ttname"><a href="structbm_1_1bv__statistics.html#a68582594950732906ddea7a99f8cd0b7">bm::bv_statistics::gap_blocks</a></div><div class="ttdeci">size_t gap_blocks</div><div class="ttdoc">Number of GAP blocks.</div><div class="ttdef"><b>Definition:</b> <a href="bmfunc_8h_source.html#l00057">bmfunc.h:57</a></div></div>
<div class="ttc" id="asample11_8cpp_html_a4d9edd508c01ff7825dd1dd6c5cb159d"><div class="ttname"><a href="sample11_8cpp.html#a4d9edd508c01ff7825dd1dd6c5cb159d">bv_count_range_acc</a></div><div class="ttdeci">static void bv_count_range_acc(const bm::bvector<> &bv)</div><div class="ttdoc">count_range() test using pre-calculated blocks bit count</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00152">sample11.cpp:152</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_a3009ba9b116f13f4933a48641f3a695d"><div class="ttname"><a href="classbm_1_1bvector.html#a3009ba9b116f13f4933a48641f3a695d">bm::bvector::count</a></div><div class="ttdeci">size_type count() const BMNOEXCEPT</div><div class="ttdoc">population cout (count of ON bits)</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l02194">bm.h:2194</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_1_1iterator__base_html_a3f6af7f5b46c0219b28916187d302c43"><div class="ttname"><a href="classbm_1_1bvector_1_1iterator__base.html#a3f6af7f5b46c0219b28916187d302c43">bm::bvector::iterator_base::valid</a></div><div class="ttdeci">bool valid() const BMNOEXCEPT</div><div class="ttdoc">Checks if iterator is still valid. Analog of != 0 comparison for pointers.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l00280">bm.h:280</a></div></div>
<div class="ttc" id="asample11_8cpp_html_a9b287f91e2adf83c3131895cd6e07195"><div class="ttname"><a href="sample11_8cpp.html#a9b287f91e2adf83c3131895cd6e07195">gen</a></div><div class="ttdeci">std::mt19937 gen(rand_dev())</div></div>
<div class="ttc" id="abmtimer_8h_html"><div class="ttname"><a href="bmtimer_8h.html">bmtimer.h</a></div><div class="ttdoc">Timing utilities for benchmarking (internal)</div></div>
<div class="ttc" id="aclassbm_1_1chrono__taker_html_a9a41e5f2fe48ba472fd77a1dbd86457dad530ca7863ce7e60f4fa221e1dfa64a2"><div class="ttname"><a href="classbm_1_1chrono__taker.html#a9a41e5f2fe48ba472fd77a1dbd86457dad530ca7863ce7e60f4fa221e1dfa64a2">bm::chrono_taker::ct_ops_per_sec</a></div><div class="ttdeci">@ ct_ops_per_sec</div><div class="ttdef"><b>Definition:</b> <a href="bmtimer_8h_source.html#l00059">bmtimer.h:59</a></div></div>
<div class="ttc" id="agroup__bvector_html_ggad0b87b3b7292383a864d27feaf1c9effa7fe09d1d7c62a813db922c396c0cbc9c"><div class="ttname"><a href="group__bvector.html#ggad0b87b3b7292383a864d27feaf1c9effa7fe09d1d7c62a813db922c396c0cbc9c">bm::BM_GAP</a></div><div class="ttdeci">@ BM_GAP</div><div class="ttdoc">GAP compression is ON.</div><div class="ttdef"><b>Definition:</b> <a href="bmconst_8h_source.html#l00144">bmconst.h:144</a></div></div>
<div class="ttc" id="asample11_8cpp_html_a840291bc02cba5474a4cb46a9b9566fe"><div class="ttname"><a href="sample11_8cpp.html#a840291bc02cba5474a4cb46a9b9566fe">main</a></div><div class="ttdeci">int main(void)</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00292">sample11.cpp:292</a></div></div>
<div class="ttc" id="aclassbm_1_1chrono__taker_html_add1676592117ed0eaa2fa6279a71b46a"><div class="ttname"><a href="classbm_1_1chrono__taker.html#add1676592117ed0eaa2fa6279a71b46a">bm::chrono_taker::duration_map_type</a></div><div class="ttdeci">std::map< std::string, statistics > duration_map_type</div><div class="ttdoc">test name to duration map</div><div class="ttdef"><b>Definition:</b> <a href="bmtimer_8h_source.html#l00065">bmtimer.h:65</a></div></div>
<div class="ttc" id="agroup__setalgo_html_ga5fb1131811b7b834dfc56a3874667a65"><div class="ttname"><a href="group__setalgo.html#ga5fb1131811b7b834dfc56a3874667a65">bm::count_and</a></div><div class="ttdeci">BV::size_type count_and(const BV &bv1, const BV &bv2) BMNOEXCEPT</div><div class="ttdoc">Computes bitcount of AND operation of two bitsets.</div><div class="ttdef"><b>Definition:</b> <a href="bmalgo_8h_source.html#l00049">bmalgo.h:49</a></div></div>
<div class="ttc" id="asample11_8cpp_html_a35469dd094dc5eaf7328f2b36d7c04bd"><div class="ttname"><a href="sample11_8cpp.html#a35469dd094dc5eaf7328f2b36d7c04bd">bv_count_range</a></div><div class="ttdeci">static void bv_count_range(const bm::bvector<> &bv)</div><div class="ttdoc">count_range() test</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00131">sample11.cpp:131</a></div></div>
<div class="ttc" id="aclassbm_1_1chrono__taker_html_a30b45453d952d14afe56c29087970899"><div class="ttname"><a href="classbm_1_1chrono__taker.html#a30b45453d952d14afe56c29087970899">bm::chrono_taker::print_duration_map</a></div><div class="ttdeci">static void print_duration_map(const duration_map_type &dmap, format fmt=ct_time)</div><div class="ttdef"><b>Definition:</b> <a href="bmtimer_8h_source.html#l00127">bmtimer.h:127</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_adfb63744a9d6039d9e8daa38cf21e3c6"><div class="ttname"><a href="classbm_1_1bvector.html#adfb63744a9d6039d9e8daa38cf21e3c6">bm::bvector::build_rs_index</a></div><div class="ttdeci">void build_rs_index(rs_index_type *rs_idx, bvector< Alloc > *bv_blocks=0) const</div><div class="ttdoc">compute running total of all blocks in bit vector (rank-select index)</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l02290">bm.h:2290</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_a86b939f3aed555dc073e8c26e9efea71"><div class="ttname"><a href="classbm_1_1bvector.html#a86b939f3aed555dc073e8c26e9efea71">bm::bvector::first</a></div><div class="ttdeci">enumerator first() const</div><div class="ttdoc">Returns enumerator pointing on the first non-zero bit.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l01770">bm.h:1770</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="aclassbm_1_1bvector_1_1counted__enumerator_html"><div class="ttname"><a href="classbm_1_1bvector_1_1counted__enumerator.html">bm::bvector::counted_enumerator</a></div><div class="ttdoc">Constant iterator designed to enumerate "ON" bits counted_enumerator keeps bitcount,...</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l00715">bm.h:715</a></div></div>
<div class="ttc" id="asample11_8cpp_html_a4c3aa36d9bdcf58161571ffb69f5211a"><div class="ttname"><a href="sample11_8cpp.html#a4c3aa36d9bdcf58161571ffb69f5211a">bv_count_to_range_acc</a></div><div class="ttdeci">static void bv_count_to_range_acc(const bm::bvector<> &bv)</div><div class="ttdoc">count_range implemented via two count_to() calls using pre-calculated rank-select index</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00204">sample11.cpp:204</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>
<div class="ttc" id="aclassbm_1_1bvector_html_a622e6827d799a561e2f0db28f7ac19d2"><div class="ttname"><a href="classbm_1_1bvector.html#a622e6827d799a561e2f0db28f7ac19d2">bm::bvector::optimize</a></div><div class="ttdeci">void optimize(bm::word_t *temp_block=0, optmode opt_mode=opt_compress, statistics *stat=0)</div><div class="ttdoc">Optimize memory bitvector's memory allocation.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l03071">bm.h:3071</a></div></div>
<div class="ttc" id="asample11_8cpp_html_a8ae0e64af654605402aa541a12f3cb88"><div class="ttname"><a href="sample11_8cpp.html#a8ae0e64af654605402aa541a12f3cb88">rand_dis</a></div><div class="ttdeci">std::uniform_int_distribution rand_dis(1, int(vector_max))</div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_ad3e0e88f17cc86b58e006186955c461b"><div class="ttname"><a href="classbm_1_1bvector.html#ad3e0e88f17cc86b58e006186955c461b">bm::bvector::count_to</a></div><div class="ttdeci">size_type count_to(size_type n, const rs_index_type &rs_idx) const BMNOEXCEPT</div><div class="ttdoc">Returns count of 1 bits (population) in [0..right] range.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l02533">bm.h:2533</a></div></div>
<div class="ttc" id="astructbm_1_1bvector_1_1statistics_html"><div class="ttname"><a href="structbm_1_1bvector_1_1statistics.html">bm::bvector::statistics</a></div><div class="ttdoc">Statistical information about bitset's memory allocation details.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l00121">bm.h:121</a></div></div>
<div class="ttc" id="asample11_8cpp_html_a4d7cf7e96896f9aebdd79fed7c8bab7b"><div class="ttname"><a href="sample11_8cpp.html#a4d7cf7e96896f9aebdd79fed7c8bab7b">rand_dev</a></div><div class="ttdeci">std::random_device rand_dev</div><div class="ttdef"><b>Definition:</b> <a href="sample11_8cpp_source.html#l00049">sample11.cpp:49</a></div></div>
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