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<p>[Find whether a given number is power of 2] (<a href="https://www.geeksforgeeks.org/program-to-find-whether-a-given-number-is-power-of-2/">https://www.geeksforgeeks.org/program-to-find-whether-a-given-number-is-power-of-2/</a>) implementation
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;cassert&gt;</code><br />
<code>#include &lt;iostream&gt;</code><br />
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Namespaces</h2></td></tr>
<tr class="memitem:d7/d81/namespacebit__manipulation"><td class="memItemLeft" align="right" valign="top">namespace &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d81/namespacebit__manipulation.html">bit_manipulation</a></td></tr>
<tr class="memdesc:d7/d81/namespacebit__manipulation"><td class="mdescLeft">&#160;</td><td class="mdescRight">for IO operations <br /></td></tr>
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Functions</h2></td></tr>
<tr class="memitem:a5032470c9974bbd6ec254bf296530a5f"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d81/namespacebit__manipulation.html#a5032470c9974bbd6ec254bf296530a5f">bit_manipulation::isPowerOfTwo</a> (std ::int64_t n)</td></tr>
<tr class="memdesc:a5032470c9974bbd6ec254bf296530a5f"><td class="mdescLeft">&#160;</td><td class="mdescRight">The main function implements check for power of 2. <br /></td></tr>
<tr class="separator:a5032470c9974bbd6ec254bf296530a5f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa8dca7b867074164d5f45b0f3851269d"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../dc/d6d/power__of__2_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a> ()</td></tr>
<tr class="memdesc:aa8dca7b867074164d5f45b0f3851269d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Self-test implementations. <br /></td></tr>
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<tr class="memitem:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../dc/d6d/power__of__2_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a> ()</td></tr>
<tr class="memdesc:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Main function. <br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>[Find whether a given number is power of 2] (<a href="https://www.geeksforgeeks.org/program-to-find-whether-a-given-number-is-power-of-2/">https://www.geeksforgeeks.org/program-to-find-whether-a-given-number-is-power-of-2/</a>) implementation </p>
<p>We are given a positive integer number. We need to check whether the number is power of 2 or not.</p>
<p>A binary number consists of two digits. They are 0 &amp; 1. Digit 1 is known as set bit in computer terms. Worst Case Time Complexity: O(1) Space complexity: O(1) </p><dl class="section author"><dt>Author</dt><dd><a href="https://github.com/EcstaticPG-25811" target="_blank">Prafful Gupta</a> </dd></dl>
</div><h2 class="groupheader">Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ae66f6b31b5ad750f1fe042a706a4e3d4">&#9670;&#160;</a></span>main()</h2>
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<td class="memname">int main </td>
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<p>Main function. </p>
<dl class="section return"><dt>Returns</dt><dd>0 on exit </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 70</span> {</div>
<div class="line"><span class="lineno"> 71</span> <a class="code hl_function" href="../../dc/d6d/power__of__2_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a>(); <span class="comment">// run self-test implementations</span></div>
<div class="line"><span class="lineno"> 72</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><span class="lineno"> 73</span>}</div>
<div class="ttc" id="apower__of__2_8cpp_html_aa8dca7b867074164d5f45b0f3851269d"><div class="ttname"><a href="../../dc/d6d/power__of__2_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a></div><div class="ttdeci">static void test()</div><div class="ttdoc">Self-test implementations.</div><div class="ttdef"><b>Definition:</b> power_of_2.cpp:47</div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#aa8dca7b867074164d5f45b0f3851269d">&#9670;&#160;</a></span>test()</h2>
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<td class="memname">static void test </td>
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<p>Self-test implementations. </p>
<dl class="section return"><dt>Returns</dt><dd>void </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 47</span> {</div>
<div class="line"><span class="lineno"> 48</span> <span class="comment">// n = 4 return true</span></div>
<div class="line"><span class="lineno"> 49</span> assert(<a class="code hl_function" href="../../d7/d81/namespacebit__manipulation.html#a5032470c9974bbd6ec254bf296530a5f">bit_manipulation::isPowerOfTwo</a>(4) == <span class="keyword">true</span>);</div>
<div class="line"><span class="lineno"> 50</span> <span class="comment">// n = 6 return false</span></div>
<div class="line"><span class="lineno"> 51</span> assert(<a class="code hl_function" href="../../d7/d81/namespacebit__manipulation.html#a5032470c9974bbd6ec254bf296530a5f">bit_manipulation::isPowerOfTwo</a>(6) == <span class="keyword">false</span>);</div>
<div class="line"><span class="lineno"> 52</span> <span class="comment">// n = 13 return false</span></div>
<div class="line"><span class="lineno"> 53</span> assert(<a class="code hl_function" href="../../d7/d81/namespacebit__manipulation.html#a5032470c9974bbd6ec254bf296530a5f">bit_manipulation::isPowerOfTwo</a>(13) == <span class="keyword">false</span>);</div>
<div class="line"><span class="lineno"> 54</span> <span class="comment">// n = 64 return true</span></div>
<div class="line"><span class="lineno"> 55</span> assert(<a class="code hl_function" href="../../d7/d81/namespacebit__manipulation.html#a5032470c9974bbd6ec254bf296530a5f">bit_manipulation::isPowerOfTwo</a>(64) == <span class="keyword">true</span>);</div>
<div class="line"><span class="lineno"> 56</span> <span class="comment">// n = 15 return false</span></div>
<div class="line"><span class="lineno"> 57</span> assert(<a class="code hl_function" href="../../d7/d81/namespacebit__manipulation.html#a5032470c9974bbd6ec254bf296530a5f">bit_manipulation::isPowerOfTwo</a>(15) == <span class="keyword">false</span>);</div>
<div class="line"><span class="lineno"> 58</span> <span class="comment">// n = 32 return true</span></div>
<div class="line"><span class="lineno"> 59</span> assert(<a class="code hl_function" href="../../d7/d81/namespacebit__manipulation.html#a5032470c9974bbd6ec254bf296530a5f">bit_manipulation::isPowerOfTwo</a>(32) == <span class="keyword">true</span>);</div>
<div class="line"><span class="lineno"> 60</span> <span class="comment">// n = 97 return false</span></div>
<div class="line"><span class="lineno"> 61</span> assert(<a class="code hl_function" href="../../d7/d81/namespacebit__manipulation.html#a5032470c9974bbd6ec254bf296530a5f">bit_manipulation::isPowerOfTwo</a>(97) == <span class="keyword">false</span>);</div>
<div class="line"><span class="lineno"> 62</span> <span class="comment">// n = 1024 return true</span></div>
<div class="line"><span class="lineno"> 63</span> assert(<a class="code hl_function" href="../../d7/d81/namespacebit__manipulation.html#a5032470c9974bbd6ec254bf296530a5f">bit_manipulation::isPowerOfTwo</a>(1024) == <span class="keyword">true</span>);</div>
<div class="line"><span class="lineno"> 64</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;All test cases successfully passed!&quot;</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 65</span>}</div>
<div class="ttc" id="abasic_ostream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a></div></div>
<div class="ttc" id="aendl_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a></div><div class="ttdeci">T endl(T... args)</div></div>
<div class="ttc" id="anamespacebit__manipulation_html_a5032470c9974bbd6ec254bf296530a5f"><div class="ttname"><a href="../../d7/d81/namespacebit__manipulation.html#a5032470c9974bbd6ec254bf296530a5f">bit_manipulation::isPowerOfTwo</a></div><div class="ttdeci">bool isPowerOfTwo(std ::int64_t n)</div><div class="ttdoc">The main function implements check for power of 2.</div><div class="ttdef"><b>Definition:</b> power_of_2.cpp:30</div></div>
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