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<div class="title">random.hpp</div> </div>
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<a href="random_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef VIENNACL_TOOLS_RANDOM_HPP</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define VIENNACL_TOOLS_RANDOM_HPP</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">/* =========================================================================</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> Copyright (c) 2010-2016, Institute for Microelectronics,</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> Institute for Analysis and Scientific Computing,</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> TU Wien.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> Portions of this software are copyright by UChicago Argonne, LLC.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> -----------------</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> ViennaCL - The Vienna Computing Library</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> -----------------</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"></span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> Project Head: Karl Rupp rupp@iue.tuwien.ac.at</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"></span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> (A list of authors and contributors can be found in the manual)</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"></span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> License: MIT (X11), see file LICENSE in the base directory</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">============================================================================= */</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <ctime></span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <cstdlib></span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <cmath></span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">namespace </span>viennacl</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> {</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">namespace </span>tools</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> {</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">template</span><<span class="keyword">typename</span> NumericT></div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="classviennacl_1_1tools_1_1uniform__random__numbers.html"> 44</a></span> <span class="keyword">class </span><a class="code" href="classviennacl_1_1tools_1_1uniform__random__numbers.html">uniform_random_numbers</a></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="classviennacl_1_1tools_1_1uniform__random__numbers.html#a51a5cd927c451a21537efd21fe21961d"> 47</a></span>  <a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a> <a class="code" href="classviennacl_1_1tools_1_1uniform__random__numbers.html#a51a5cd927c451a21537efd21fe21961d">operator()</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a><span class="keyword">></span>(double(rand()) / double(RAND_MAX)); }</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> };</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keyword">template</span><<span class="keyword">typename</span> NumericT></div>
<div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="classviennacl_1_1tools_1_1normal__random__numbers.html"> 57</a></span> <span class="keyword">class </span><a class="code" href="classviennacl_1_1tools_1_1normal__random__numbers.html">normal_random_numbers</a></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> {</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="classviennacl_1_1tools_1_1normal__random__numbers.html#aa1d764625f2e4b1aaeabc92376ab6b08"> 60</a></span>  <a class="code" href="classviennacl_1_1tools_1_1normal__random__numbers.html#aa1d764625f2e4b1aaeabc92376ab6b08">normal_random_numbers</a>(<a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a> mean = <a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a>(0), <a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a> sigma = <a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a>(1)) : mean_(mean), sigma_(sigma) {}</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="classviennacl_1_1tools_1_1normal__random__numbers.html#a2104d2ed3df39adc7b16a6f9bbe753f7"> 62</a></span>  <a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a> <a class="code" href="classviennacl_1_1tools_1_1normal__random__numbers.html#a2104d2ed3df39adc7b16a6f9bbe753f7">operator()</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a> u = 0;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">while</span> (std::fabs(u) <= 0 || u >= <a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a>(1))</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  u = <span class="keyword">static_cast<</span><a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a><span class="keyword">></span>(double(rand()) / double(RAND_MAX));</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a> v = 0;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">while</span> (std::fabs(v) <= 0 || v >= <a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a>(1))</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  v = static_cast<NumericT>(<span class="keywordtype">double</span>(rand()) / double(RAND_MAX));</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">return</span> mean_ + sigma_ * std::sqrt(<a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a>(-2) * std::log(u)) * std::cos(<a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a>(6.28318530717958647692) * v);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a> mean_;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <a class="code" href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a> sigma_;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> };</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> }</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> }</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div>
<div class="ttc" id="classviennacl_1_1tools_1_1normal__random__numbers_html"><div class="ttname"><a href="classviennacl_1_1tools_1_1normal__random__numbers.html">viennacl::tools::normal_random_numbers</a></div><div class="ttdoc">Random number generator for returning normally distributed values. </div><div class="ttdef"><b>Definition:</b> <a href="random_8hpp_source.html#l00057">random.hpp:57</a></div></div>
<div class="ttc" id="classviennacl_1_1tools_1_1normal__random__numbers_html_a2104d2ed3df39adc7b16a6f9bbe753f7"><div class="ttname"><a href="classviennacl_1_1tools_1_1normal__random__numbers.html#a2104d2ed3df39adc7b16a6f9bbe753f7">viennacl::tools::normal_random_numbers::operator()</a></div><div class="ttdeci">NumericT operator()() const </div><div class="ttdef"><b>Definition:</b> <a href="random_8hpp_source.html#l00062">random.hpp:62</a></div></div>
<div class="ttc" id="tests_2src_2bisect_8cpp_html_a52b5d30a2d7b064678644a3bf49b7f6c"><div class="ttname"><a href="tests_2src_2bisect_8cpp.html#a52b5d30a2d7b064678644a3bf49b7f6c">NumericT</a></div><div class="ttdeci">float NumericT</div><div class="ttdef"><b>Definition:</b> <a href="tests_2src_2bisect_8cpp_source.html#l00040">bisect.cpp:40</a></div></div>
<div class="ttc" id="classviennacl_1_1tools_1_1uniform__random__numbers_html"><div class="ttname"><a href="classviennacl_1_1tools_1_1uniform__random__numbers.html">viennacl::tools::uniform_random_numbers</a></div><div class="ttdoc">Random number generator for returning uniformly distributed values in the closed interval [0...</div><div class="ttdef"><b>Definition:</b> <a href="random_8hpp_source.html#l00044">random.hpp:44</a></div></div>
<div class="ttc" id="classviennacl_1_1tools_1_1normal__random__numbers_html_aa1d764625f2e4b1aaeabc92376ab6b08"><div class="ttname"><a href="classviennacl_1_1tools_1_1normal__random__numbers.html#aa1d764625f2e4b1aaeabc92376ab6b08">viennacl::tools::normal_random_numbers::normal_random_numbers</a></div><div class="ttdeci">normal_random_numbers(NumericT mean=NumericT(0), NumericT sigma=NumericT(1))</div><div class="ttdef"><b>Definition:</b> <a href="random_8hpp_source.html#l00060">random.hpp:60</a></div></div>
<div class="ttc" id="classviennacl_1_1tools_1_1uniform__random__numbers_html_a51a5cd927c451a21537efd21fe21961d"><div class="ttname"><a href="classviennacl_1_1tools_1_1uniform__random__numbers.html#a51a5cd927c451a21537efd21fe21961d">viennacl::tools::uniform_random_numbers::operator()</a></div><div class="ttdeci">NumericT operator()() const </div><div class="ttdef"><b>Definition:</b> <a href="random_8hpp_source.html#l00047">random.hpp:47</a></div></div>
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