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<div class="contents">
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<p>A simple program to check if the given number is a <a href="https://en.wikipedia.org/wiki/Factorial" target="_blank">factorial</a> of some number or not.
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<a href="#details">More...</a></p>
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<div class="textblock"><code>#include <cassert></code><br />
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<code>#include <cstdint></code><br />
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<code>#include <iostream></code><br />
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Include dependency graph for check_factorial.cpp:</div>
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<table class="memberdecls">
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Namespaces</h2></td></tr>
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<tr class="memitem:math" id="r_math"><td class="memItemLeft" align="right" valign="top">namespace  </td><td class="memItemRight" valign="bottom"><a class="el" href="../../dd/d47/namespacemath.html">math</a></td></tr>
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<tr class="memdesc:dd/d47/namespacemath"><td class="mdescLeft"> </td><td class="mdescRight">for assert <br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 id="header-func-members" class="groupheader"><a id="func-members" name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:a6c72f756a7bf1b9043c357e3fe7814ca" id="r_a6c72f756a7bf1b9043c357e3fe7814ca"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../dd/d47/namespacemath.html#a6c72f756a7bf1b9043c357e3fe7814ca">math::is_factorial</a> (uint64_t n)</td></tr>
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<tr class="memdesc:a6c72f756a7bf1b9043c357e3fe7814ca"><td class="mdescLeft"> </td><td class="mdescRight">Function to check if the given number is factorial of some number or not. <br /></td></tr>
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<tr class="memitem:a483bb8ccf42aaf7375a83e91490eda1e" id="r_a483bb8ccf42aaf7375a83e91490eda1e"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="#a483bb8ccf42aaf7375a83e91490eda1e">tests</a> ()</td></tr>
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<tr class="memdesc:a483bb8ccf42aaf7375a83e91490eda1e"><td class="mdescLeft"> </td><td class="mdescRight">Self-test implementations. <br /></td></tr>
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<tr class="memitem:ae66f6b31b5ad750f1fe042a706a4e3d4" id="r_ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a> ()</td></tr>
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<tr class="memdesc:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="mdescLeft"> </td><td class="mdescRight">Main function. <br /></td></tr>
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</table>
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<a name="details" id="details"></a><h2 id="header-details" class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>A simple program to check if the given number is a <a href="https://en.wikipedia.org/wiki/Factorial" target="_blank">factorial</a> of some number or not. </p>
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<p>A factorial number is the sum of k! where any value of k is a positive integer. <a href="https://www.mathsisfun.com/numbers/factorial.html">https://www.mathsisfun.com/numbers/factorial.html</a></p>
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<dl class="section author"><dt>Author</dt><dd><a href="https://github.com/divyajyotiuk" target="_blank">Divyajyoti Ukirde</a> </dd>
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<dd>
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<a href="https://github.com/ewd00010" target="_blank">ewd00010</a> </dd></dl>
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<p class="definition">Definition in file <a class="el" href="../../d8/dd5/check__factorial_8cpp_source.html">check_factorial.cpp</a>.</p>
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</div><a name="doc-func-members" id="doc-func-members"></a><h2 id="header-doc-func-members" class="groupheader">Function Documentation</h2>
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<a id="ae66f6b31b5ad750f1fe042a706a4e3d4" name="ae66f6b31b5ad750f1fe042a706a4e3d4"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ae66f6b31b5ad750f1fe042a706a4e3d4">◆ </a></span>main()</h2>
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<div class="memitem">
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<table class="memname">
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<td class="memname">int main </td>
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<td>(</td>
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<td class="paramtype">void</td> <td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
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<td></td>
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<p>Main function. </p>
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<dl class="section return"><dt>Returns</dt><dd>0 on exit </dd></dl>
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<p class="definition">Definition at line <a class="el" href="../../d8/dd5/check__factorial_8cpp_source.html#l00071">71</a> of file <a class="el" href="../../d8/dd5/check__factorial_8cpp_source.html">check_factorial.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 71</span> {</div>
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<div class="line"><span class="lineno"> 72</span> <a class="code hl_function" href="#a483bb8ccf42aaf7375a83e91490eda1e">tests</a>(); <span class="comment">// run self-test implementations</span></div>
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<div class="line"><span class="lineno"> 73</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><span class="lineno"> 74</span>}</div>
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<div class="ttc" id="acheck__factorial_8cpp_html_a483bb8ccf42aaf7375a83e91490eda1e"><div class="ttname"><a href="#a483bb8ccf42aaf7375a83e91490eda1e">tests</a></div><div class="ttdeci">static void tests()</div><div class="ttdoc">Self-test implementations.</div><div class="ttdef"><b>Definition</b> <a href="../../d8/dd5/check__factorial_8cpp_source.html#l00056">check_factorial.cpp:56</a></div></div>
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<a id="a483bb8ccf42aaf7375a83e91490eda1e" name="a483bb8ccf42aaf7375a83e91490eda1e"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a483bb8ccf42aaf7375a83e91490eda1e">◆ </a></span>tests()</h2>
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<td class="memname">void tests </td>
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<td>(</td>
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<td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
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<span class="mlabels"><span class="mlabel static">static</span></span> </td>
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</div><div class="memdoc">
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<p>Self-test implementations. </p>
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<dl class="section return"><dt>Returns</dt><dd>void </dd></dl>
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<p class="definition">Definition at line <a class="el" href="../../d8/dd5/check__factorial_8cpp_source.html#l00056">56</a> of file <a class="el" href="../../d8/dd5/check__factorial_8cpp_source.html">check_factorial.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 56</span> {</div>
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<div class="line"><span class="lineno"> 57</span> assert(<a class="code hl_function" href="../../dd/d47/namespacemath.html#a6c72f756a7bf1b9043c357e3fe7814ca">math::is_factorial</a>(50) == <span class="keyword">false</span>);</div>
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<div class="line"><span class="lineno"> 58</span> assert(<a class="code hl_function" href="../../dd/d47/namespacemath.html#a6c72f756a7bf1b9043c357e3fe7814ca">math::is_factorial</a>(720) == <span class="keyword">true</span>);</div>
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<div class="line"><span class="lineno"> 59</span> assert(<a class="code hl_function" href="../../dd/d47/namespacemath.html#a6c72f756a7bf1b9043c357e3fe7814ca">math::is_factorial</a>(0) == <span class="keyword">false</span>);</div>
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<div class="line"><span class="lineno"> 60</span> assert(<a class="code hl_function" href="../../dd/d47/namespacemath.html#a6c72f756a7bf1b9043c357e3fe7814ca">math::is_factorial</a>(1) == <span class="keyword">true</span>);</div>
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<div class="line"><span class="lineno"> 61</span> assert(<a class="code hl_function" href="../../dd/d47/namespacemath.html#a6c72f756a7bf1b9043c357e3fe7814ca">math::is_factorial</a>(479001600) == <span class="keyword">true</span>);</div>
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<div class="line"><span class="lineno"> 62</span> assert(<a class="code hl_function" href="../../dd/d47/namespacemath.html#a6c72f756a7bf1b9043c357e3fe7814ca">math::is_factorial</a>(-24) == <span class="keyword">false</span>);</div>
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<div class="line"><span class="lineno"> 63</span> </div>
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<div class="line"><span class="lineno"> 64</span> std::cout << <span class="stringliteral">"All tests have successfully passed!"</span> << std::endl;</div>
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<div class="line"><span class="lineno"> 65</span>}</div>
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<div class="ttc" id="anamespacemath_html_a6c72f756a7bf1b9043c357e3fe7814ca"><div class="ttname"><a href="../../dd/d47/namespacemath.html#a6c72f756a7bf1b9043c357e3fe7814ca">math::is_factorial</a></div><div class="ttdeci">bool is_factorial(uint64_t n)</div><div class="ttdoc">Function to check if the given number is factorial of some number or not.</div><div class="ttdef"><b>Definition</b> <a href="../../d8/dd5/check__factorial_8cpp_source.html#l00028">check_factorial.cpp:28</a></div></div>
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