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<a href="monte__carlo_8hpp.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><span class="comment">/** @file monte_carlo.hpp</span></div>
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<div class="line"><span class="lineno"> 2</span><span class="comment"> *</span></div>
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<div class="line"><span class="lineno"> 3</span><span class="comment"> * @author Cory Alexander Balaton (coryab)</span></div>
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<div class="line"><span class="lineno"> 4</span><span class="comment"> * @author Janita Ovidie Sandtrøen Willumsen (janitaws)</span></div>
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<div class="line"><span class="lineno"> 5</span><span class="comment"> *</span></div>
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<div class="line"><span class="lineno"> 6</span><span class="comment"> * @version 1.0</span></div>
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<div class="line"><span class="lineno"> 7</span><span class="comment"> *</span></div>
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<div class="line"><span class="lineno"> 8</span><span class="comment"> * @brief Functions for Monte Carlo simulations.</span></div>
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<div class="line"><span class="lineno"> 9</span><span class="comment"> *</span></div>
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<div class="line"><span class="lineno"> 10</span><span class="comment"> * @bug No known bugs</span></div>
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<div class="line"><span class="lineno"> 11</span><span class="comment"> * */</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#</span><span class="preprocessor">ifndef</span> <span class="preprocessor">__MONTE_CARLO__</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#</span><span class="preprocessor">define</span> <span class="preprocessor">__MONTE_CARLO__</span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> </div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#</span><span class="preprocessor">include</span> <a class="code" href="IsingModel_8hpp.html" title="The definition of the Ising model.">"IsingModel.hpp"</a></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#</span><span class="preprocessor">include</span> <a class="code" href="data__type_8hpp.html" title="Header for the data_t type.">"data_type.hpp"</a></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#</span><span class="preprocessor">include</span> <a class="code" href="utils_8hpp.html" title="Function prototypes and macros that are useful.">"utils.hpp"</a></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#</span><span class="preprocessor">include</span> <span class="preprocessor"><</span><span class="preprocessor">functional</span><span class="preprocessor">></span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#</span><span class="preprocessor">include</span> <span class="preprocessor"><</span><span class="preprocessor">omp</span><span class="preprocessor">.</span><span class="preprocessor">h</span><span class="preprocessor">></span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#</span><span class="preprocessor">include</span> <span class="preprocessor"><</span><span class="preprocessor">string</span><span class="preprocessor">></span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="comment">// #define BURN_IN_TIME 12500</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#</span><span class="preprocessor">define</span> <span class="preprocessor">BURN_IN_TIME</span> 5000</div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> </div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="keyword">namespace</span> montecarlo {</div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="comment">/** @brief Write the expected values for each Monte Carlo cycles to file.</span></div>
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<div class="line"><span class="lineno"> 28</span><span class="comment"> *</span></div>
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<div class="line"><span class="lineno"> 29</span><span class="comment"> * @param T Temperature</span></div>
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<div class="line"><span class="lineno"> 30</span><span class="comment"> * @param L The size of the lattice</span></div>
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<div class="line"><span class="lineno"> 31</span><span class="comment"> * @param cycles The amount of Monte Carlo cycles to do</span></div>
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<div class="line"><span class="lineno"> 32</span><span class="comment"> * @param filename The file to write to</span></div>
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<div class="line"><span class="lineno"> 33</span><span class="comment"> * @param burn_in_time The burn-in time to use</span></div>
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<div class="line"><span class="lineno"> 34</span><span class="comment"> * */</span></div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="keywordtype">void</span> <a class="code hl_function" href="monte__carlo_8hpp.html#a781d946de16211ba18ad6671a5b6838d">progression</a>(<span class="keywordtype">double</span> T, <span class="keywordtype">int</span> L, <span class="keywordtype">int</span> cycles, <span class="keyword">const</span> std::string filename,</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keywordtype">int</span> burn_in_time = <a class="code hl_define" href="monte__carlo_8hpp.html#a362b5ad7de095387fcbc573632a19cbf">BURN_IN_TIME</a>);</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><span class="comment">/** @brief Write the expected values for each Monte Carlo cycles to file.</span></div>
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<div class="line"><span class="lineno"> 39</span><span class="comment"> *</span></div>
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<div class="line"><span class="lineno"> 40</span><span class="comment"> * @param T Temperature</span></div>
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<div class="line"><span class="lineno"> 41</span><span class="comment"> * @param L The size of the lattice</span></div>
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<div class="line"><span class="lineno"> 42</span><span class="comment"> * @param cycles The amount of Monte Carlo cycles to do</span></div>
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<div class="line"><span class="lineno"> 43</span><span class="comment"> * @param value The value to set the elements in the lattice</span></div>
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<div class="line"><span class="lineno"> 44</span><span class="comment"> * @param filename The file to write to</span></div>
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<div class="line"><span class="lineno"> 45</span><span class="comment"> * @param burn_in_time The burn-in time to use</span></div>
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<div class="line"><span class="lineno"> 46</span><span class="comment"> * */</span></div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span><span class="keywordtype">void</span> <a class="code hl_function" href="monte__carlo_8hpp.html#a1549fc386bd3cdd1cdbe0261b9dd8415">progression</a>(<span class="keywordtype">double</span> T, <span class="keywordtype">int</span> L, <span class="keywordtype">int</span> cycles, <span class="keywordtype">int</span> value,</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">const</span> std::string filename, <span class="keywordtype">int</span> burn_in_time = <a class="code hl_define" href="monte__carlo_8hpp.html#a362b5ad7de095387fcbc573632a19cbf">BURN_IN_TIME</a>);</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span><span class="comment">/** @brief Estimate the probability distribution for the energy.</span></div>
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<div class="line"><span class="lineno"> 51</span><span class="comment"> *</span></div>
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<div class="line"><span class="lineno"> 52</span><span class="comment"> * @param T The temperature of the Ising model</span></div>
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<div class="line"><span class="lineno"> 53</span><span class="comment"> * @param L The size of the lattice</span></div>
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<div class="line"><span class="lineno"> 54</span><span class="comment"> * @param cycles The amount of Monte Carlo cycles to do</span></div>
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<div class="line"><span class="lineno"> 55</span><span class="comment"> * @param filename The file to write to</span></div>
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<div class="line"><span class="lineno"> 56</span><span class="comment"> * @param burn_in_time The burn-in time to use</span></div>
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<div class="line"><span class="lineno"> 57</span><span class="comment"> * */</span></div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span><span class="keywordtype">void</span> <a class="code hl_function" href="monte__carlo_8hpp.html#aea2dd1b5fac7c45633bc6f8dc4541226">pd_estimate</a>(<span class="keywordtype">double</span> T, <span class="keywordtype">int</span> L, <span class="keywordtype">int</span> cycles, <span class="keyword">const</span> std::string filename,</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordtype">int</span> burn_in_time = <a class="code hl_define" href="monte__carlo_8hpp.html#a362b5ad7de095387fcbc573632a19cbf">BURN_IN_TIME</a>);</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> </div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span><span class="comment">/** @brief Execute the Metropolis algorithm for a certain amount of Monte</span></div>
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<div class="line"><span class="lineno"> 62</span><span class="comment"> * Carlo cycles.</span></div>
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<div class="line"><span class="lineno"> 63</span><span class="comment"> *</span></div>
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<div class="line"><span class="lineno"> 64</span><span class="comment"> * @param L The size of the lattice</span></div>
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<div class="line"><span class="lineno"> 65</span><span class="comment"> * @param T The Temperature for the Ising model</span></div>
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<div class="line"><span class="lineno"> 66</span><span class="comment"> * @param cycles The amount of Monte Carlo cycles to do</span></div>
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<div class="line"><span class="lineno"> 67</span><span class="comment"> * @param burn_in_time The burn-in time to use</span></div>
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<div class="line"><span class="lineno"> 68</span><span class="comment"> *</span></div>
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<div class="line"><span class="lineno"> 69</span><span class="comment"> * @return data_t</span></div>
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<div class="line"><span class="lineno"> 70</span><span class="comment"> * */</span></div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span><a class="code hl_class" href="classdata__t.html">data_t</a> <a class="code hl_function" href="monte__carlo_8hpp.html#ae67483ff00d1b0594d543261c8283ffd">mcmc_serial</a>(<span class="keywordtype">int</span> L, <span class="keywordtype">double</span> T, <span class="keywordtype">int</span> cycles,</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keywordtype">int</span> burn_in_time = <a class="code hl_define" href="monte__carlo_8hpp.html#a362b5ad7de095387fcbc573632a19cbf">BURN_IN_TIME</a>);</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="comment">/** @brief Execute the Metropolis algorithm for a certain amount of Monte</span></div>
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<div class="line"><span class="lineno"> 75</span><span class="comment"> * Carlo cycles in parallel.</span></div>
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<div class="line"><span class="lineno"> 76</span><span class="comment"> *</span></div>
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<div class="line"><span class="lineno"> 77</span><span class="comment"> * @param L The size of the lattice</span></div>
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<div class="line"><span class="lineno"> 78</span><span class="comment"> * @param T The Temperature for the Ising model</span></div>
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<div class="line"><span class="lineno"> 79</span><span class="comment"> * @param cycles The amount of Monte Carlo cycles to do</span></div>
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<div class="line"><span class="lineno"> 80</span><span class="comment"> * @param burn_in_time The burn-in time to use</span></div>
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<div class="line"><span class="lineno"> 81</span><span class="comment"> *</span></div>
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<div class="line"><span class="lineno"> 82</span><span class="comment"> * @return data_t</span></div>
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<div class="line"><span class="lineno"> 83</span><span class="comment"> * */</span></div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span><a class="code hl_class" href="classdata__t.html">data_t</a> <a class="code hl_function" href="monte__carlo_8hpp.html#ae1e7f904ecfc3d8f3c4dd1ef155dd771">mcmc_parallel</a>(<span class="keywordtype">int</span> L, <span class="keywordtype">double</span> T, <span class="keywordtype">int</span> cycles,</div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="keywordtype">int</span> burn_in_time = <a class="code hl_define" href="monte__carlo_8hpp.html#a362b5ad7de095387fcbc573632a19cbf">BURN_IN_TIME</a>);</div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> </div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span><span class="comment">/** @brief Perform the MCMC algorithm using a range of temperatures.</span></div>
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<div class="line"><span class="lineno"> 88</span><span class="comment"> *</span></div>
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<div class="line"><span class="lineno"> 89</span><span class="comment"> * @param L The size of the lattice</span></div>
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<div class="line"><span class="lineno"> 90</span><span class="comment"> * @param start_T The start temperature</span></div>
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<div class="line"><span class="lineno"> 91</span><span class="comment"> * @param end_T The end temperature</span></div>
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<div class="line"><span class="lineno"> 92</span><span class="comment"> * @param point_T The amount of point to measure</span></div>
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<div class="line"><span class="lineno"> 93</span><span class="comment"> * @param monte_carlo Which Monte Carlo implementation to use</span></div>
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<div class="line"><span class="lineno"> 94</span><span class="comment"> * @param outfile The file to write the data to</span></div>
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<div class="line"><span class="lineno"> 95</span><span class="comment"> * @param burn_in_time The burn-in time to use</span></div>
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<div class="line"><span class="lineno"> 96</span><span class="comment"> * */</span></div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span><span class="keywordtype">void</span> <a class="code hl_function" href="monte__carlo_8hpp.html#a34e9c3e24f26760693266b8a7b6b3d21">phase_transition</a>(<span class="keywordtype">int</span> L, <span class="keywordtype">double</span> start_T, <span class="keywordtype">double</span> end_T, <span class="keywordtype">int</span> points_T,</div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keywordtype">int</span> cycles,</div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> std::function<<a class="code hl_class" href="classdata__t.html">data_t</a>(<span class="keywordtype">int</span>, <span class="keywordtype">double</span>, <span class="keywordtype">int</span>, <span class="keywordtype">int</span>)> monte_carlo,</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> std::string outfile, <span class="keywordtype">int</span> burn_in_time = <a class="code hl_define" href="monte__carlo_8hpp.html#a362b5ad7de095387fcbc573632a19cbf">BURN_IN_TIME</a>);</div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span>}; <span class="comment">// namespace montecarlo</span></div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> </div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span><span class="preprocessor">#</span><span class="preprocessor">endif</span></div>
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<div class="ttc" id="aclassdata__t_html"><div class="ttname"><a href="classdata__t.html">data_t</a></div><div class="ttdoc">Type to use with the IsingModel class and montecarlo module.</div><div class="ttdef"><b>Definition:</b> <a href="data__type_8hpp_source.html#l00019">data_type.hpp:19</a></div></div>
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<div class="ttc" id="amain_8cpp_html_a0dfa85080578dffff23b68e372cece95"><div class="ttname"><a href="main_8cpp.html#a0dfa85080578dffff23b68e372cece95">test_parallel_speedup</a></div><div class="ttdeci">void test_parallel_speedup()</div><div class="ttdoc">Test how much Openmp speeds up.</div><div class="ttdef"><b>Definition:</b> <a href="main_8cpp_source.html#l00060">main.cpp:60</a></div></div>
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<div class="ttc" id="amain_8cpp_html_a3c04138a5bfe5d72780bb7e82a18e627"><div class="ttname"><a href="main_8cpp.html#a3c04138a5bfe5d72780bb7e82a18e627">main</a></div><div class="ttdeci">int main(int argc, char **argv)</div><div class="ttdoc">The main function.</div><div class="ttdef"><b>Definition:</b> <a href="main_8cpp_source.html#l00125">main.cpp:125</a></div></div>
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<div class="ttc" id="amain_8cpp_html_a4f8ea24364d72024915d3753a572cc5b"><div class="ttname"><a href="main_8cpp.html#a4f8ea24364d72024915d3753a572cc5b">create_pd_estimate_data</a></div><div class="ttdeci">void create_pd_estimate_data()</div><div class="ttdoc">Create the data used to estimate the probability distribution for tempratures 1.0 anbd 2....</div><div class="ttdef"><b>Definition:</b> <a href="main_8cpp_source.html#l00037">main.cpp:37</a></div></div>
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<div class="ttc" id="amain_8cpp_html_a68406fc2dd8de5849c3984658c171f32"><div class="ttname"><a href="main_8cpp.html#a68406fc2dd8de5849c3984658c171f32">create_burn_in_time_data</a></div><div class="ttdeci">void create_burn_in_time_data()</div><div class="ttdoc">Create the data for the burn-in time for temperatures 1.0 and 2.4 for both unordered and ordered init...</div><div class="ttdef"><b>Definition:</b> <a href="main_8cpp_source.html#l00021">main.cpp:21</a></div></div>
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<div class="ttc" id="amain_8cpp_html_a746d8dc451b2b2536abbb1ff1acaf861"><div class="ttname"><a href="main_8cpp.html#a746d8dc451b2b2536abbb1ff1acaf861">test_burn_in_time</a></div><div class="ttdeci">void test_burn_in_time()</div><div class="ttdoc">Create data using the same parameters except one uses burn-in time, while the other doesn't.</div><div class="ttdef"><b>Definition:</b> <a href="main_8cpp_source.html#l00049">main.cpp:49</a></div></div>
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<div class="ttc" id="amain_8cpp_html_a9d62cf1399596f4c5a39abdd3196d76d"><div class="ttname"><a href="main_8cpp.html#a9d62cf1399596f4c5a39abdd3196d76d">create_phase_transition_data</a></div><div class="ttdeci">void create_phase_transition_data()</div><div class="ttdoc">Create data for studying phase transition.</div><div class="ttdef"><b>Definition:</b> <a href="main_8cpp_source.html#l00083">main.cpp:83</a></div></div>
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<div class="ttc" id="amain_8cpp_html_ac907e18135856c90366aaa599a9e10b1"><div class="ttname"><a href="main_8cpp.html#ac907e18135856c90366aaa599a9e10b1">usage</a></div><div class="ttdeci">void usage(std::string filename)</div><div class="ttdoc">A function that displays how to use the program and quits.</div><div class="ttdef"><b>Definition:</b> <a href="main_8cpp_source.html#l00110">main.cpp:110</a></div></div>
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<div class="ttc" id="amonte__carlo_8hpp_html_a1549fc386bd3cdd1cdbe0261b9dd8415"><div class="ttname"><a href="monte__carlo_8hpp.html#a1549fc386bd3cdd1cdbe0261b9dd8415">montecarlo::progression</a></div><div class="ttdeci">void progression(double T, int L, int cycles, int value, const std::string filename, int burn_in_time=BURN_IN_TIME)</div><div class="ttdoc">Write the expected values for each Monte Carlo cycles to file.</div><div class="ttdef"><b>Definition:</b> <a href="monte__carlo_8cpp_source.html#l00053">monte_carlo.cpp:53</a></div></div>
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<div class="ttc" id="amonte__carlo_8hpp_html_a34e9c3e24f26760693266b8a7b6b3d21"><div class="ttname"><a href="monte__carlo_8hpp.html#a34e9c3e24f26760693266b8a7b6b3d21">montecarlo::phase_transition</a></div><div class="ttdeci">void phase_transition(int L, double start_T, double end_T, int points_T, int cycles, std::function< data_t(int, double, int, int)> monte_carlo, std::string outfile, int burn_in_time=BURN_IN_TIME)</div><div class="ttdoc">Perform the MCMC algorithm using a range of temperatures.</div><div class="ttdef"><b>Definition:</b> <a href="monte__carlo_8cpp_source.html#l00169">monte_carlo.cpp:169</a></div></div>
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<div class="ttc" id="amonte__carlo_8hpp_html_a362b5ad7de095387fcbc573632a19cbf"><div class="ttname"><a href="monte__carlo_8hpp.html#a362b5ad7de095387fcbc573632a19cbf">BURN_IN_TIME</a></div><div class="ttdeci">#define BURN_IN_TIME</div><div class="ttdef"><b>Definition:</b> <a href="monte__carlo_8hpp_source.html#l00024">monte_carlo.hpp:24</a></div></div>
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<div class="ttc" id="amonte__carlo_8hpp_html_a781d946de16211ba18ad6671a5b6838d"><div class="ttname"><a href="monte__carlo_8hpp.html#a781d946de16211ba18ad6671a5b6838d">montecarlo::progression</a></div><div class="ttdeci">void progression(double T, int L, int cycles, const std::string filename, int burn_in_time=BURN_IN_TIME)</div><div class="ttdoc">Write the expected values for each Monte Carlo cycles to file.</div><div class="ttdef"><b>Definition:</b> <a href="monte__carlo_8cpp_source.html#l00015">monte_carlo.cpp:15</a></div></div>
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<div class="ttc" id="amonte__carlo_8hpp_html_ae1e7f904ecfc3d8f3c4dd1ef155dd771"><div class="ttname"><a href="monte__carlo_8hpp.html#ae1e7f904ecfc3d8f3c4dd1ef155dd771">montecarlo::mcmc_parallel</a></div><div class="ttdeci">data_t mcmc_parallel(int L, double T, int cycles, int burn_in_time=BURN_IN_TIME)</div><div class="ttdoc">Execute the Metropolis algorithm for a certain amount of Monte Carlo cycles in parallel.</div><div class="ttdef"><b>Definition:</b> <a href="monte__carlo_8cpp_source.html#l00141">monte_carlo.cpp:141</a></div></div>
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<div class="ttc" id="amonte__carlo_8hpp_html_ae67483ff00d1b0594d543261c8283ffd"><div class="ttname"><a href="monte__carlo_8hpp.html#ae67483ff00d1b0594d543261c8283ffd">montecarlo::mcmc_serial</a></div><div class="ttdeci">data_t mcmc_serial(int L, double T, int cycles, int burn_in_time=BURN_IN_TIME)</div><div class="ttdoc">Execute the Metropolis algorithm for a certain amount of Monte Carlo cycles.</div><div class="ttdef"><b>Definition:</b> <a href="monte__carlo_8cpp_source.html#l00122">monte_carlo.cpp:122</a></div></div>
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<div class="ttc" id="amonte__carlo_8hpp_html_aea2dd1b5fac7c45633bc6f8dc4541226"><div class="ttname"><a href="monte__carlo_8hpp.html#aea2dd1b5fac7c45633bc6f8dc4541226">montecarlo::pd_estimate</a></div><div class="ttdeci">void pd_estimate(double T, int L, int cycles, const std::string filename, int burn_in_time=BURN_IN_TIME)</div><div class="ttdoc">Estimate the probability distribution for the energy.</div><div class="ttdef"><b>Definition:</b> <a href="monte__carlo_8cpp_source.html#l00091">monte_carlo.cpp:91</a></div></div>
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