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<div class="headertitle"><div class="title">fibonacci.cpp</div></div>
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<div class="contents">
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<a href="../../d9/d89/fibonacci_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include <cstdint></span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include <cassert></span> </div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include <iostream></span> </div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="keyword">namespace </span><a class="code hl_namespace" href="../../dd/d47/namespacemath.html">math</a> {</div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="keyword">namespace </span><a class="code hl_namespace" href="../../df/d76/namespacefibonacci.html">fibonacci</a> {</div>
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<div class="foldopen" id="foldopen00032" data-start="{" data-end="}">
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"><a class="line" href="../../d9/d89/fibonacci_8cpp.html#aeaaf5439cb29de4630c7dff2fd914b28"> 32</a></span>uint64_t <a class="code hl_namespace" href="../../df/d76/namespacefibonacci.html">fibonacci</a>(uint64_t n) {</div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <span class="comment">// If the input is 0 or 1 just return the same (Base Case)</span></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// This will set the first 2 values of the sequence</span></div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <span class="keywordflow">if</span> (n <= 1) {</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keywordflow">return</span> n;</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> }</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> </div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <span class="comment">// Add the preceding 2 values of the sequence to get next</span></div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keywordflow">return</span> <a class="code hl_namespace" href="../../df/d76/namespacefibonacci.html">fibonacci</a>(n - 1) + <a class="code hl_namespace" href="../../df/d76/namespacefibonacci.html">fibonacci</a>(n - 2);</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span>}</div>
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</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span>} <span class="comment">// namespace fibonacci</span></div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span>} <span class="comment">// namespace math</span></div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span></div>
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<div class="foldopen" id="foldopen00049" data-start="{" data-end="}">
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"><a class="line" href="../../d9/d89/fibonacci_8cpp.html#aa8dca7b867074164d5f45b0f3851269d"> 49</a></span><span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../d9/d89/fibonacci_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a>() {</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> assert(<a class="code hl_function" href="../../d9/d89/fibonacci_8cpp.html#aeaaf5439cb29de4630c7dff2fd914b28">math::fibonacci::fibonacci</a>(0) == 0);</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> assert(<a class="code hl_function" href="../../d9/d89/fibonacci_8cpp.html#aeaaf5439cb29de4630c7dff2fd914b28">math::fibonacci::fibonacci</a>(1) == 1);</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> assert(<a class="code hl_function" href="../../d9/d89/fibonacci_8cpp.html#aeaaf5439cb29de4630c7dff2fd914b28">math::fibonacci::fibonacci</a>(2) == 1);</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> assert(<a class="code hl_function" href="../../d9/d89/fibonacci_8cpp.html#aeaaf5439cb29de4630c7dff2fd914b28">math::fibonacci::fibonacci</a>(3) == 2);</div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> assert(<a class="code hl_function" href="../../d9/d89/fibonacci_8cpp.html#aeaaf5439cb29de4630c7dff2fd914b28">math::fibonacci::fibonacci</a>(4) == 3);</div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> assert(<a class="code hl_function" href="../../d9/d89/fibonacci_8cpp.html#aeaaf5439cb29de4630c7dff2fd914b28">math::fibonacci::fibonacci</a>(15) == 610);</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> assert(<a class="code hl_function" href="../../d9/d89/fibonacci_8cpp.html#aeaaf5439cb29de4630c7dff2fd914b28">math::fibonacci::fibonacci</a>(20) == 6765);</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> std::cout << <span class="stringliteral">"All tests have passed successfully!\n"</span>;</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span>}</div>
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</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span></div>
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<div class="foldopen" id="foldopen00064" data-start="{" data-end="}">
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"><a class="line" href="../../d9/d89/fibonacci_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4"> 64</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../d9/d89/fibonacci_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <a class="code hl_function" href="../../d9/d89/fibonacci_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a>(); <span class="comment">// run self-test implementations</span></div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span>}</div>
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</div>
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<div class="ttc" id="afibonacci_8cpp_html_aa8dca7b867074164d5f45b0f3851269d"><div class="ttname"><a href="../../d9/d89/fibonacci_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a></div><div class="ttdeci">static void test()</div><div class="ttdoc">Self-test implementation.</div><div class="ttdef"><b>Definition</b> <a href="#l00049">fibonacci.cpp:49</a></div></div>
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<div class="ttc" id="afibonacci_8cpp_html_ae66f6b31b5ad750f1fe042a706a4e3d4"><div class="ttname"><a href="../../d9/d89/fibonacci_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a></div><div class="ttdeci">int main()</div><div class="ttdoc">Main function.</div><div class="ttdef"><b>Definition</b> <a href="#l00064">fibonacci.cpp:64</a></div></div>
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<div class="ttc" id="afibonacci_8cpp_html_aeaaf5439cb29de4630c7dff2fd914b28"><div class="ttname"><a href="../../d9/d89/fibonacci_8cpp.html#aeaaf5439cb29de4630c7dff2fd914b28">math::fibonacci::fibonacci</a></div><div class="ttdeci">uint64_t fibonacci(uint64_t n)</div><div class="ttdoc">Function to compute the n-th Fibonacci number.</div><div class="ttdef"><b>Definition</b> <a href="#l00032">fibonacci.cpp:32</a></div></div>
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<div class="ttc" id="anamespacefibonacci_html"><div class="ttname"><a href="../../df/d76/namespacefibonacci.html">fibonacci</a></div><div class="ttdoc">Functions for Fibonacci sequence.</div></div>
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<div class="ttc" id="anamespacemath_html"><div class="ttname"><a href="../../dd/d47/namespacemath.html">math</a></div><div class="ttdoc">for assert</div></div>
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