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<h1 id="functions-bitwise--page-root">Bitwise Functions<a class="headerlink" href="#functions-bitwise--page-root" title="Permalink to this headline">#</a></h1>
<dl class="function">
<dt id="bit_count">
<code class="sig-name descname">bit_count</code><span class="sig-paren">(</span><em class="sig-param">x</em>, <em class="sig-param">bits</em><span class="sig-paren">)</span> → bigint<a class="headerlink" href="#bit_count" title="Permalink to this definition">#</a></dt>
<dd><p>Count the number of bits set in <code class="docutils literal notranslate"><span class="pre">x</span></code> (treated as <code class="docutils literal notranslate"><span class="pre">bits</span></code>-bit signed
integer) in 2’s complement representation:</p>
<div class="highlight-sql notranslate"><div class="highlight"><pre><span></span><span class="k">SELECT</span> <span class="n">bit_count</span><span class="p">(</span><span class="mi">9</span><span class="p">,</span> <span class="mi">64</span><span class="p">);</span> <span class="c1">-- 2</span>
<span class="k">SELECT</span> <span class="n">bit_count</span><span class="p">(</span><span class="mi">9</span><span class="p">,</span> <span class="mi">8</span><span class="p">);</span> <span class="c1">-- 2</span>
<span class="k">SELECT</span> <span class="n">bit_count</span><span class="p">(</span><span class="o">-</span><span class="mi">7</span><span class="p">,</span> <span class="mi">64</span><span class="p">);</span> <span class="c1">-- 62</span>
<span class="k">SELECT</span> <span class="n">bit_count</span><span class="p">(</span><span class="o">-</span><span class="mi">7</span><span class="p">,</span> <span class="mi">8</span><span class="p">);</span> <span class="c1">-- 6</span>
</pre></div>
</div>
</dd></dl>
<dl class="function">
<dt id="bitwise_and">
<code class="sig-name descname">bitwise_and</code><span class="sig-paren">(</span><em class="sig-param">x</em>, <em class="sig-param">y</em><span class="sig-paren">)</span> → bigint<a class="headerlink" href="#bitwise_and" title="Permalink to this definition">#</a></dt>
<dd><p>Returns the bitwise AND of <code class="docutils literal notranslate"><span class="pre">x</span></code> and <code class="docutils literal notranslate"><span class="pre">y</span></code> in 2’s complement representation.</p>
</dd></dl>
<dl class="function">
<dt id="bitwise_not">
<code class="sig-name descname">bitwise_not</code><span class="sig-paren">(</span><em class="sig-param">x</em><span class="sig-paren">)</span> → bigint<a class="headerlink" href="#bitwise_not" title="Permalink to this definition">#</a></dt>
<dd><p>Returns the bitwise NOT of <code class="docutils literal notranslate"><span class="pre">x</span></code> in 2’s complement representation.</p>
</dd></dl>
<dl class="function">
<dt id="bitwise_or">
<code class="sig-name descname">bitwise_or</code><span class="sig-paren">(</span><em class="sig-param">x</em>, <em class="sig-param">y</em><span class="sig-paren">)</span> → bigint<a class="headerlink" href="#bitwise_or" title="Permalink to this definition">#</a></dt>
<dd><p>Returns the bitwise OR of <code class="docutils literal notranslate"><span class="pre">x</span></code> and <code class="docutils literal notranslate"><span class="pre">y</span></code> in 2’s complement representation.</p>
</dd></dl>
<dl class="function">
<dt id="bitwise_xor">
<code class="sig-name descname">bitwise_xor</code><span class="sig-paren">(</span><em class="sig-param">x</em>, <em class="sig-param">y</em><span class="sig-paren">)</span> → bigint<a class="headerlink" href="#bitwise_xor" title="Permalink to this definition">#</a></dt>
<dd><p>Returns the bitwise XOR of <code class="docutils literal notranslate"><span class="pre">x</span></code> and <code class="docutils literal notranslate"><span class="pre">y</span></code> in 2’s complement representation.</p>
</dd></dl>
<dl class="function">
<dt id="bitwise_left_shift">
<code class="sig-name descname">bitwise_left_shift</code><span class="sig-paren">(</span><em class="sig-param">value</em>, <em class="sig-param">shift</em><span class="sig-paren">)</span> → [same as value]<a class="headerlink" href="#bitwise_left_shift" title="Permalink to this definition">#</a></dt>
<dd><p>Returns the left shifted value of <code class="docutils literal notranslate"><span class="pre">value</span></code>.</p>
</dd></dl>
<dl class="function">
<dt id="bitwise_right_shift">
<code class="sig-name descname">bitwise_right_shift</code><span class="sig-paren">(</span><em class="sig-param">value</em>, <em class="sig-param">shift</em>, <em class="sig-param">digits</em><span class="sig-paren">)</span> → [same as value]<a class="headerlink" href="#bitwise_right_shift" title="Permalink to this definition">#</a></dt>
<dd><p>Returns the logical right shifted value of <code class="docutils literal notranslate"><span class="pre">value</span></code>.</p>
</dd></dl>
<dl class="function">
<dt id="bitwise_right_shift_arithmetic">
<code class="sig-name descname">bitwise_right_shift_arithmetic</code><span class="sig-paren">(</span><em class="sig-param">value</em>, <em class="sig-param">shift</em><span class="sig-paren">)</span> → [same as value]<a class="headerlink" href="#bitwise_right_shift_arithmetic" title="Permalink to this definition">#</a></dt>
<dd><p>Returns the arithmetic right shifted value of <code class="docutils literal notranslate"><span class="pre">value</span></code>.</p>
</dd></dl>
<p>See also <a class="reference internal" href="aggregate.html#bitwise_and_agg" title="bitwise_and_agg"><code class="xref py py-func docutils literal notranslate"><span class="pre">bitwise_and_agg()</span></code></a> and <a class="reference internal" href="aggregate.html#bitwise_or_agg" title="bitwise_or_agg"><code class="xref py py-func docutils literal notranslate"><span class="pre">bitwise_or_agg()</span></code></a>.</p>


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