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<div class="title">fft_2d.cpp</div> </div>
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<a href="fft__2d_8cpp.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="comment">/* =========================================================================</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> Copyright (c) 2010-2016, Institute for Microelectronics,</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> Institute for Analysis and Scientific Computing,</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> TU Wien.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> Portions of this software are copyright by UChicago Argonne, LLC.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"></span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> -----------------</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> ViennaCL - The Vienna Computing Library</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"> Project Head: Karl Rupp rupp@iue.tuwien.ac.at</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"> (A list of authors and contributors can be found in the PDF manual)</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"></span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> License: MIT (X11), see file LICENSE in the base directory</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">============================================================================= */</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <iostream></span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <vector></span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <cmath></span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <complex></span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <algorithm></span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">//#define VIENNACL_BUILD_INFO</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="host__based_2fft__operations_8hpp.html">viennacl/linalg/host_based/fft_operations.hpp</a>"</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#ifdef VIENNACL_WITH_OPENCL</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "<a class="code" href="opencl_2fft__operations_8hpp.html">viennacl/linalg/opencl/fft_operations.hpp</a>"</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "<a class="code" href="linalg_2opencl_2kernels_2fft_8hpp.html">viennacl/linalg/opencl/kernels/fft.hpp</a>"</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#ifdef VIENNACL_WITH_CUDA</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include "<a class="code" href="cuda_2fft__operations_8hpp.html">viennacl/linalg/cuda/fft_operations.hpp</a>"</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include "<a class="code" href="fft__operations_8hpp.html">viennacl/linalg/fft_operations.hpp</a>"</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#include "<a class="code" href="fft_8hpp.html">viennacl/fft.hpp</a>"</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5"> 42</a></span> <span class="keyword">typedef</span> <span class="keywordtype">float</span> <a class="code" href="fft__2d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a>;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#af6f913fdc71ad35c8ec4d99fe8671987"> 44</a></span> <span class="keyword">const</span> <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> <a class="code" href="fft__2d_8cpp.html#af6f913fdc71ad35c8ec4d99fe8671987">EPS</a> = <a class="code" href="fft__2d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a>(0.06f); <span class="comment">//use smaller values in double precision</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div>
<div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#ad431337acacff9e06c1286095e78f8ac"> 46</a></span> <span class="keyword">typedef</span> <a class="code" href="fft__2d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> (*<a class="code" href="fft__2d_8cpp.html#ad431337acacff9e06c1286095e78f8ac">test_function_ptr</a>)(std::vector<ScalarType>&, std::vector<ScalarType>&,</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordtype">unsigned</span> int, <span class="keywordtype">unsigned</span> int, <span class="keywordtype">unsigned</span> int);</div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#a4b189d809e837b0a80d17a81f0649314"> 48</a></span> <span class="keyword">typedef</span> void (*<a class="code" href="fft__2d_8cpp.html#a4b189d809e837b0a80d17a81f0649314">input_function_ptr</a>)(std::vector<ScalarType>&, std::vector<ScalarType>&,</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>&, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>&, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>&, <span class="keyword">const</span> std::string&);</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="keyword">struct </span><a class="code" href="structtest_data.html">testData</a></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordtype">float</span> <a class="code" href="structtest_data.html#a3c78d34e230ea1a828dceb27180ea700">input</a>[2048];</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordtype">float</span> <a class="code" href="structtest_data.html#ad8e3394939d9f0e3e3f33abb01e28af4">output</a>[2048];</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="structtest_data.html#afbeac1b8842462a94a3204945bc54535">batch_num</a>;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="structtest_data.html#a221ded1c886a86b39e9fef197af7c58b">row_num</a>;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="structtest_data.html#a17b3748f5f39c787969812b2e8323d9c">col_num</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> </div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">static</span> <a class="code" href="structtest_data.html">testData</a> direct_2d = { { 0.120294f, 0.839315f, 0.890936f, 0.775417f, 0.375051f, 0.775645f, 0.367671f, 0.309852f, 0.551154f, 0.166495f, 0.174865f, 0.340252f, 0.393914f, 0.439817f, 0.523974f, 0.291109f, 0.181803f,</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  0.811176f, 0.490668f, 0.234881f, 0.611783f, 0.098058f, 0.106492f, 0.399059f, 0.974164f, 0.403960f, 0.324111f, 0.772581f, 0.609412f, 0.917312f, 0.538254f, 0.729706f, 0.756627f, 0.429191f, 0.505123f, 0.131678f,</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  0.204836f, 0.872794f, 0.441530f, 0.755990f, 0.039289f, 0.616395f, 0.096242f, 0.433203f, 0.056212f, 0.620216f, 0.724312f, 0.238015f }, { 10.058718f, 12.402115f, 3.306907f, 0.570050f, -0.527832f, -1.052828f,</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  -0.309640f, 1.578631f, 0.027247f, 1.441292f, -2.396150f, 0.396048f, -2.490234f, -0.923666f, -0.890061f, 1.154475f, -2.485666f, -0.029132f, -1.617884f, -0.788678f, 0.008640f, -0.751211f, -0.245883f, 2.815872f,</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  2.316608f, 0.780692f, 0.437285f, -0.798080f, 0.304596f, -0.176831f, 1.481121f, -0.633767f, -0.177035f, 0.302556f, -1.388328f, 0.109418f, 0.034794f, 0.568763f, 0.053167f, -0.332043f, 0.074045f, -1.350742f,</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  -1.101494f, 1.267548f, -1.288304f, 2.578995f, -0.297569f, 1.014074f }, 1, 4, 6 };</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="keyword">static</span> <a class="code" href="structtest_data.html">testData</a> radix2_2d = { { 0.860600f, 0.020071f, 0.756794f, 0.472348f, 0.604630f, 0.445387f, 0.738811f, 0.644715f, 0.840903f, 0.746019f, 0.629334f, 0.682880f, 0.516268f, 0.235386f, 0.800333f, 0.175785f, 0.974124f,</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  0.485907f, 0.492256f, 0.696148f, 0.230253f, 0.600575f, 0.138786f, 0.136737f, 0.114667f, 0.516912f, 0.173743f, 0.899410f, 0.891824f, 0.704459f, 0.450209f, 0.752424f, 0.724530f, 0.207003f, 0.224772f, 0.329161f,</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  0.652390f, 0.963583f, 0.973876f, 0.493293f, 0.709602f, 0.603211f, 0.176173f, 0.225870f, 0.838596f, 0.976507f, 0.401655f, 0.812721f, 0.462413f, 0.893911f, 0.508869f, 0.692667f, 0.494486f, 0.647656f, 0.829403f,</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  0.609152f, 0.164568f, 0.003146f, 0.508563f, 0.056392f, 0.707605f, 0.958771f, 0.808816f, 0.432136f }, { 18.399853f, 17.120342f, 1.194352f, 0.639568f, -0.086731f, -0.384759f, 1.241270f, -2.175158f, 1.175068f,</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  0.896665f, 0.753659f, 0.780709f, -0.082556f, -3.727531f, 1.578434f, -0.294704f, 1.544822f, -0.169894f, 0.570453f, -1.065756f, 1.432534f, -1.146827f, -1.713843f, 2.376111f, -2.141517f, -3.200578f, -1.061705f,</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  -1.680550f, 0.656694f, 2.493567f, -1.462913f, -3.195214f, 2.498683f, -1.052464f, -1.144435f, -4.022502f, 0.301723f, 0.550845f, -1.033154f, -0.872973f, 0.916475f, -0.175878f, 0.123236f, -1.495021f, 1.962570f,</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  -0.616791f, -2.436357f, -1.537166f, 0.547337f, -2.207615f, 1.563801f, -0.916862f, 2.013805f, 1.934075f, 0.940849f, -0.143010f, -0.361511f, 0.364330f, -0.161776f, 1.245928f, -1.553198f, 1.579960f, 1.363282f,</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  0.741429f }, 1, 4, 8 };</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="keyword">static</span> <a class="code" href="structtest_data.html">testData</a> direct_2d_big = { { 0.475679f, 0.408864f, 0.313085f, 0.387599f, 0.767833f, 0.015767f, 0.832733f, 0.764867f, 0.850312f, 0.782744f, 0.355199f, 0.308463f, 0.496935f, 0.043339f, 0.309902f, 0.030681f, 0.497275f,</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  0.237185f, 0.229802f, 0.606489f, 0.720393f, 0.848826f, 0.704500f, 0.845834f, 0.451885f, 0.339276f, 0.523190f, 0.688469f, 0.646792f, 0.975192f, 0.933888f, 0.122471f, 0.384056f, 0.246973f, 0.510070f, 0.151889f,</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  0.262739f, 0.342803f, 0.916756f, 0.113051f, 0.125547f, 0.271954f, 0.421514f, 0.622482f, 0.315293f, 0.731416f, 0.653164f, 0.812568f, 0.968601f, 0.882965f, 0.419057f, 0.688994f, 0.731792f, 0.123557f, 0.534827f,</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  0.183676f, 0.462833f, 0.058017f, 0.872145f, 0.109626f, 0.033209f, 0.806033f, 0.232097f, 0.417265f, 0.053006f, 0.742167f, 0.569154f, 0.315745f, 0.084970f, 0.485910f, 0.428796f, 0.210517f, 0.757864f, 0.850311f,</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  0.832999f, 0.073158f, 0.581726f, 0.486163f, 0.885726f, 0.550328f, 0.369128f, 0.304783f, 0.239321f, 0.100920f }, { 21.755795f, 18.089336f, -1.248233f, -0.179035f, 1.307578f, 1.589876f, -1.680055f, 1.879153f,</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  0.500297f, 0.839735f, 0.046095f, -0.177522f, 0.742587f, -0.786261f, -3.427422f, -0.445572f, -1.376776f, 1.221333f, 0.334313f, -0.588123f, -2.070653f, 1.297694f, -1.879930f, -2.445690f, 1.692045f, 0.251480f,</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  0.435994f, 0.257269f, 1.513737f, 0.859310f, 0.538316f, -3.698363f, -3.243739f, 2.342074f, 1.255018f, -1.052454f, 0.450322f, 3.684811f, -0.951320f, 2.863686f, -0.170055f, 1.501932f, -0.800708f, 2.040001f,</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  -0.229112f, -0.175461f, -5.128507f, -2.872447f, -2.125049f, -2.656515f, 0.632609f, -2.080163f, 2.527745f, -1.830541f, 0.086613f, -1.402300f, -0.900261f, -1.355287f, -0.909127f, 2.822799f, 2.142723f, -0.882929f,</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  -3.627774f, 0.180693f, -0.073456f, 0.783774f, 2.144351f, -0.252458f, 0.090970f, -0.007880f, 3.457415f, 0.527979f, 0.505462f, 0.978198f, -1.807562f, -2.692160f, 2.556900f, -1.385276f, 3.526823f, 0.247212f,</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  1.879590f, 0.288942f, 1.504963f, -0.408566f }, 1, 7, 6 };</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">static</span> <a class="code" href="structtest_data.html">testData</a> transposeMatrix= {{0.139420f,0.539278f,0.547922f,0.672097f,0.528360f,0.158671f,0.596258f,0.432662f,0.445432f,0.597279f,0.966011f,0.707923f,0.705743f,0.282214f,0.100677f,0.143657f,0.040120f,0.346660f,0.279002f,</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  0.568480f,0.505332f,0.875261f,0.001142f,0.237294f,0.673498f,0.699611f,0.990521f,0.379241f,0.981826f,0.091198f,0.522898f,0.637506f}, {0.13942f,0.539278f,0.445432f,0.597279f,0.04012f,0.34666f,0.673498f,0.699611f,</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  0.547922f,0.672097f,0.966011f,0.707923f,0.279002f,0.56848f,0.990521f,0.379241f,0.52836f,0.158671f,0.705743f,0.282214f,0.505332f,0.875261f,0.981826f,0.091198f,0.596258f,0.432662f,0.100677f,0.143657f,0.001142f,</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  0.237294f,0.522898f,0.637506f},1,4,4};</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="keywordtype">void</span> <a class="code" href="fft__2d_8cpp.html#af439f7a9be2c4f5746d22bfecb527bdd">set_values_struct</a>(std::vector<ScalarType>& input, std::vector<ScalarType>& output,</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& rows, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& cols, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& batch_size, <a class="code" href="structtest_data.html">testData</a>& data);</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a name="l00095"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#af439f7a9be2c4f5746d22bfecb527bdd"> 95</a></span> <span class="keywordtype">void</span> <a class="code" href="fft__2d_8cpp.html#af439f7a9be2c4f5746d22bfecb527bdd">set_values_struct</a>(std::vector<ScalarType>& input, std::vector<ScalarType>& output,</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& rows, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& cols, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& batch_size, <a class="code" href="structtest_data.html">testData</a>& data)</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> {</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespaceviennacl_1_1traits.html#aa2344ea20469f55fbc15a8e9526494d0">size</a> = data.<a class="code" href="structtest_data.html#a17b3748f5f39c787969812b2e8323d9c">col_num</a> * data.<a class="code" href="structtest_data.html#afbeac1b8842462a94a3204945bc54535">batch_num</a> * 2 * data.<a class="code" href="structtest_data.html#a221ded1c886a86b39e9fef197af7c58b">row_num</a>;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  input.resize(size);</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  output.resize(size);</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  rows = data.<a class="code" href="structtest_data.html#a221ded1c886a86b39e9fef197af7c58b">row_num</a>;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  cols = data.<a class="code" href="structtest_data.html#a17b3748f5f39c787969812b2e8323d9c">col_num</a>;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  batch_size = data.<a class="code" href="structtest_data.html#afbeac1b8842462a94a3204945bc54535">batch_num</a>;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < <a class="code" href="namespaceviennacl_1_1traits.html#aa2344ea20469f55fbc15a8e9526494d0">size</a>; i++)</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  {</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  input[i] = data.<a class="code" href="structtest_data.html#a3c78d34e230ea1a828dceb27180ea700">input</a>[i];</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  output[i] = data.<a class="code" href="structtest_data.html#ad8e3394939d9f0e3e3f33abb01e28af4">output</a>[i];</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  }</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> }</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="keywordtype">void</span> <a class="code" href="fft__2d_8cpp.html#a7cee249cffcd5d7be1c31ea17a284cd9">read_matrices_pair</a>(std::vector<ScalarType>& input, std::vector<ScalarType>& output,</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& rows, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& cols, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& batch_size, <span class="keyword">const</span> std::string& log_tag);</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#a7cee249cffcd5d7be1c31ea17a284cd9"> 115</a></span> <span class="keywordtype">void</span> <a class="code" href="fft__2d_8cpp.html#a7cee249cffcd5d7be1c31ea17a284cd9">read_matrices_pair</a>(std::vector<ScalarType>& input, std::vector<ScalarType>& output,</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& rows, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& cols, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& batch_size, <span class="keyword">const</span> std::string& log_tag)</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> {</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">if</span> (log_tag == <span class="stringliteral">"fft:2d::direct::1_arg"</span>)</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <a class="code" href="fft__2d_8cpp.html#af439f7a9be2c4f5746d22bfecb527bdd">set_values_struct</a>(input, output, rows, cols, batch_size, direct_2d);</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">if</span> (log_tag == <span class="stringliteral">"fft:2d::radix2::1_arg"</span>)</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <a class="code" href="fft__2d_8cpp.html#af439f7a9be2c4f5746d22bfecb527bdd">set_values_struct</a>(input, output, rows, cols, batch_size, radix2_2d);</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">if</span> (log_tag == <span class="stringliteral">"fft:2d::direct::big::2_arg"</span>)</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <a class="code" href="fft__2d_8cpp.html#af439f7a9be2c4f5746d22bfecb527bdd">set_values_struct</a>(input, output, rows, cols, batch_size, direct_2d_big);</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">if</span> (log_tag == <span class="stringliteral">"fft::transpose"</span> || log_tag == <span class="stringliteral">"fft::transpose_inplace"</span>)</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <a class="code" href="fft__2d_8cpp.html#af439f7a9be2c4f5746d22bfecb527bdd">set_values_struct</a>(input, output, rows, cols, batch_size, transposeMatrix);</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> }</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="keyword">template</span><<span class="keyword">typename</span> ScalarType></div>
<div class="line"><a name="l00130"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#a3042870eb8881681860b088156ccf079"> 130</a></span> <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> <a class="code" href="fft__2d_8cpp.html#a3042870eb8881681860b088156ccf079">diff</a>(std::vector<ScalarType>& vec, std::vector<ScalarType>& ref)</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> {</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> df = 0.0;</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> norm_ref = 0;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">for</span> (std::size_t i = 0; i < vec.size(); i++)</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  {</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  df = df + pow(vec[i] - ref[i], 2);</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  norm_ref += ref[i] * ref[i];</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">return</span> sqrt(df / norm_ref);</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> }</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="keyword">template</span><<span class="keyword">typename</span> ScalarType></div>
<div class="line"><a name="l00145"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#aadad85fa5cbf31466487bb0585d1a769"> 145</a></span> <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> <a class="code" href="fft__2d_8cpp.html#aadad85fa5cbf31466487bb0585d1a769">diff_max</a>(std::vector<ScalarType>& vec, std::vector<ScalarType>& ref)</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> {</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> df = 0.0;</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> mx = 0.0;</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> norm_max = 0;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">for</span> (std::size_t i = 0; i < vec.size(); i++)</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  {</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  df = std::max<ScalarType>(std::fabs(vec[i] - ref[i]), df);</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  mx = std::max<ScalarType>(std::fabs(vec[i]), mx);</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">if</span> (mx > 0)</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  {</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">if</span> (norm_max < df / mx)</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  norm_max = df / mx;</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  }</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> </div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">return</span> norm_max;</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> }</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="keywordtype">void</span> <a class="code" href="fft__2d_8cpp.html#a40b89a65d3390cf44a03717ee53eedca">copy_vector_to_matrix</a>(<a class="code" href="classviennacl_1_1matrix.html">viennacl::matrix<ScalarType></a> & input, std::vector<ScalarType> & in,</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> col);</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div>
<div class="line"><a name="l00170"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#a40b89a65d3390cf44a03717ee53eedca"> 170</a></span> <span class="keywordtype">void</span> <a class="code" href="fft__2d_8cpp.html#a40b89a65d3390cf44a03717ee53eedca">copy_vector_to_matrix</a>(<a class="code" href="classviennacl_1_1matrix.html">viennacl::matrix<ScalarType></a> & input, std::vector<ScalarType> & in,</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> col)</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> {</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  std::vector<std::vector<ScalarType> > my_matrix(row, std::vector<ScalarType>(col * 2));</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>; i++)</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j = 0; j < col * 2; j++)</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  my_matrix[i][j] = in[i * col * 2 + j];</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <a class="code" href="namespaceviennacl.html#a10b7f8cf6b8864a7aa196d670481a453">viennacl::copy</a>(my_matrix, input);</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> </div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> }</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="keywordtype">void</span> <a class="code" href="fft__2d_8cpp.html#a4461a05ba16b9052cf36f4752c63619e">copy_matrix_to_vector</a>(<a class="code" href="classviennacl_1_1matrix.html">viennacl::matrix<ScalarType></a> & input, std::vector<ScalarType> & in,</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> col);</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div>
<div class="line"><a name="l00184"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#a4461a05ba16b9052cf36f4752c63619e"> 184</a></span> <span class="keywordtype">void</span> <a class="code" href="fft__2d_8cpp.html#a4461a05ba16b9052cf36f4752c63619e">copy_matrix_to_vector</a>(<a class="code" href="classviennacl_1_1matrix.html">viennacl::matrix<ScalarType></a> & input, std::vector<ScalarType> & in,</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> col)</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> {</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  std::vector<std::vector<ScalarType> > my_matrix(row, std::vector<ScalarType>(col * 2));</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <a class="code" href="namespaceviennacl.html#a10b7f8cf6b8864a7aa196d670481a453">viennacl::copy</a>(input, my_matrix);</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>; i++)</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j = 0; j < col * 2; j++)</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  in[i * col * 2 + j] = my_matrix[i][j];</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> }</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> <a class="code" href="fft__2d_8cpp.html#afc07a94f6f8fca89904a2b6a89bc4e14">fft_2d_1arg</a>(std::vector<ScalarType>& in, std::vector<ScalarType>& out, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>,</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> col, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <span class="comment">/*batch_size*/</span>);</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> </div>
<div class="line"><a name="l00197"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#afc07a94f6f8fca89904a2b6a89bc4e14"> 197</a></span> <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> <a class="code" href="fft__2d_8cpp.html#afc07a94f6f8fca89904a2b6a89bc4e14">fft_2d_1arg</a>(std::vector<ScalarType>& in, std::vector<ScalarType>& out, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>,</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> col, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <span class="comment">/*batch_size*/</span>)</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> {</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <a class="code" href="classviennacl_1_1matrix.html">viennacl::matrix<ScalarType></a> input(row, 2 * col);</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  std::vector<ScalarType> res(in.size());</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <a class="code" href="fft__2d_8cpp.html#a40b89a65d3390cf44a03717ee53eedca">copy_vector_to_matrix</a>(input, in, row, col);</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> </div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  viennacl::inplace_fft(input);</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="comment">//std::cout << input << "\n";</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <a class="code" href="namespaceviennacl_1_1backend.html#a3707340b27c535438e213e3879b0f0a4">viennacl::backend::finish</a>();</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> </div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <a class="code" href="fft__2d_8cpp.html#a4461a05ba16b9052cf36f4752c63619e">copy_matrix_to_vector</a>(input, res, row, col);</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">return</span> <a class="code" href="fft__2d_8cpp.html#aadad85fa5cbf31466487bb0585d1a769">diff_max</a>(res, out);</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> }</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> </div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> <a class="code" href="fft__2d_8cpp.html#a4eb5cd8352d689f5495ec1ba1ea49f0a">transpose_inplace</a>(std::vector<ScalarType>& in, std::vector<ScalarType>& out, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>,</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> col, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <span class="comment">/*batch_size*/</span>);</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> </div>
<div class="line"><a name="l00218"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#a4eb5cd8352d689f5495ec1ba1ea49f0a"> 218</a></span> <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> <a class="code" href="fft__2d_8cpp.html#a4eb5cd8352d689f5495ec1ba1ea49f0a">transpose_inplace</a>(std::vector<ScalarType>& in, std::vector<ScalarType>& out, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>,</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> col, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <span class="comment">/*batch_size*/</span>)</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> {</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <a class="code" href="classviennacl_1_1matrix.html">viennacl::matrix<ScalarType></a> input(row, 2 * col);</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  std::vector<ScalarType> res(in.size());</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <a class="code" href="fft__2d_8cpp.html#a40b89a65d3390cf44a03717ee53eedca">copy_vector_to_matrix</a>(input, in, row, col);</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <a class="code" href="namespaceviennacl_1_1linalg.html#ae829451e793471ca5e8751cf89fec950">viennacl::linalg::transpose</a>(input);</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> </div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <a class="code" href="namespaceviennacl_1_1backend.html#a3707340b27c535438e213e3879b0f0a4">viennacl::backend::finish</a>();</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> </div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <a class="code" href="fft__2d_8cpp.html#a4461a05ba16b9052cf36f4752c63619e">copy_matrix_to_vector</a>(input, res, row, col);</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">return</span> <a class="code" href="fft__2d_8cpp.html#aadad85fa5cbf31466487bb0585d1a769">diff_max</a>(res, out);</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> }</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> </div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> <a class="code" href="fft__2d_8cpp.html#a0b36333131d10fd9a0abb3aa21b0b445">transpose</a>(std::vector<ScalarType>& in, std::vector<ScalarType>& out, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>,</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> col, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <span class="comment">/*batch_size*/</span>);</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> </div>
<div class="line"><a name="l00239"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#a0b36333131d10fd9a0abb3aa21b0b445"> 239</a></span> <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> <a class="code" href="fft__2d_8cpp.html#a0b36333131d10fd9a0abb3aa21b0b445">transpose</a>(std::vector<ScalarType>& in, std::vector<ScalarType>& out, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>,</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> col, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <span class="comment">/*batch_size*/</span>)</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> {</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <a class="code" href="classviennacl_1_1matrix.html">viennacl::matrix<ScalarType></a> input(row, 2 * col);</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <a class="code" href="classviennacl_1_1matrix.html">viennacl::matrix<ScalarType></a> output(row, 2 * col);</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> </div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  std::vector<ScalarType> res(in.size());</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> </div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <a class="code" href="fft__2d_8cpp.html#a40b89a65d3390cf44a03717ee53eedca">copy_vector_to_matrix</a>(input, in, row, col);</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> </div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <a class="code" href="namespaceviennacl_1_1linalg.html#ae829451e793471ca5e8751cf89fec950">viennacl::linalg::transpose</a>(input,output);</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> </div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <a class="code" href="namespaceviennacl_1_1backend.html#a3707340b27c535438e213e3879b0f0a4">viennacl::backend::finish</a>();</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <a class="code" href="fft__2d_8cpp.html#a4461a05ba16b9052cf36f4752c63619e">copy_matrix_to_vector</a>(output, res, row, col);</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> </div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keywordflow">return</span> <a class="code" href="fft__2d_8cpp.html#aadad85fa5cbf31466487bb0585d1a769">diff_max</a>(res, out);</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> }</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> </div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> <a class="code" href="fft__2d_8cpp.html#a05ddc634f34ae8fb86372ff8626a059f">fft_2d_2arg</a>(std::vector<ScalarType>& in, std::vector<ScalarType>& out, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>,</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> col, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <span class="comment">/*batch_size*/</span>);</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> </div>
<div class="line"><a name="l00263"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#a05ddc634f34ae8fb86372ff8626a059f"> 263</a></span> <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> <a class="code" href="fft__2d_8cpp.html#a05ddc634f34ae8fb86372ff8626a059f">fft_2d_2arg</a>(std::vector<ScalarType>& in, std::vector<ScalarType>& out, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">row</a>,</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> col, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <span class="comment">/*batch_size*/</span>)</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> {</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <a class="code" href="classviennacl_1_1matrix.html">viennacl::matrix<ScalarType></a> input(row, 2 * col);</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <a class="code" href="classviennacl_1_1matrix.html">viennacl::matrix<ScalarType></a> output(row, 2 * col);</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> </div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  std::vector<ScalarType> res(in.size());</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <a class="code" href="fft__2d_8cpp.html#a40b89a65d3390cf44a03717ee53eedca">copy_vector_to_matrix</a>(input, in, row, col);</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> </div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="comment">//std::cout << input << "\n";</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <a class="code" href="fft__1d_8cpp.html#a56353420d188d1181ae49bf69283b497">viennacl::fft</a>(input, output);</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="comment">//std::cout << input << "\n";</span></div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <a class="code" href="namespaceviennacl_1_1backend.html#a3707340b27c535438e213e3879b0f0a4">viennacl::backend::finish</a>();</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> </div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <a class="code" href="fft__2d_8cpp.html#a4461a05ba16b9052cf36f4752c63619e">copy_matrix_to_vector</a>(output, res, row, col);</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="keywordflow">return</span> <a class="code" href="fft__2d_8cpp.html#aadad85fa5cbf31466487bb0585d1a769">diff_max</a>(res, out);</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> }</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> </div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="keywordtype">int</span> <a class="code" href="fft__2d_8cpp.html#a50090af3f56c8a964b17ccd9ea6ba500">test_correctness</a>(<span class="keyword">const</span> std::string& log_tag, <a class="code" href="fft__2d_8cpp.html#a4b189d809e837b0a80d17a81f0649314">input_function_ptr</a> input_function,</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <a class="code" href="fft__2d_8cpp.html#ad431337acacff9e06c1286095e78f8ac">test_function_ptr</a> func);</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> </div>
<div class="line"><a name="l00286"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#a50090af3f56c8a964b17ccd9ea6ba500"> 286</a></span> <span class="keywordtype">int</span> <a class="code" href="fft__2d_8cpp.html#a50090af3f56c8a964b17ccd9ea6ba500">test_correctness</a>(<span class="keyword">const</span> std::string& log_tag, <a class="code" href="fft__2d_8cpp.html#a4b189d809e837b0a80d17a81f0649314">input_function_ptr</a> input_function,</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <a class="code" href="fft__2d_8cpp.html#ad431337acacff9e06c1286095e78f8ac">test_function_ptr</a> func)</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> {</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> </div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  std::vector<ScalarType> input;</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  std::vector<ScalarType> output;</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span> </div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  std::cout << std::endl;</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  std::cout << <span class="stringliteral">"*****************"</span> << log_tag << <span class="stringliteral">"***************************\n"</span>;</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> </div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> batch_size;</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> rows_num, cols_num;</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> </div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  input_function(input, output, rows_num, cols_num, batch_size, log_tag);</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <a class="code" href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a> df = func(input, output, rows_num, cols_num, batch_size);</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  printf(<span class="stringliteral">"%7s ROWS=%6d COLS=%6d; BATCH=%3d; DIFF=%3.15f;\n"</span>, ((fabs(df) < <a class="code" href="fft__2d_8cpp.html#af6f913fdc71ad35c8ec4d99fe8671987">EPS</a>) ? <span class="stringliteral">"[Ok]"</span> : <span class="stringliteral">"[Fail]"</span>),</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  rows_num, cols_num, batch_size, df);</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  std::cout << std::endl;</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> </div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">if</span> (df > <a class="code" href="fft__2d_8cpp.html#af6f913fdc71ad35c8ec4d99fe8671987">EPS</a>)</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keywordflow">return</span> EXIT_FAILURE;</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> </div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordflow">return</span> EXIT_SUCCESS;</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span> }</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> </div>
<div class="line"><a name="l00311"></a><span class="lineno"><a class="line" href="fft__2d_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4"> 311</a></span> <span class="keywordtype">int</span> <a class="code" href="fft__2d_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a>()</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> {</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  std::cout << <span class="stringliteral">"*"</span> << std::endl;</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  std::cout << <span class="stringliteral">"* ViennaCL test: FFT"</span> << std::endl;</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  std::cout << <span class="stringliteral">"*"</span> << std::endl;</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> </div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="comment">//2D FFT tests</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="keywordflow">if</span> (<a class="code" href="fft__2d_8cpp.html#a50090af3f56c8a964b17ccd9ea6ba500">test_correctness</a>(<span class="stringliteral">"fft:2d::radix2::1_arg"</span>, <a class="code" href="fft__2d_8cpp.html#a7cee249cffcd5d7be1c31ea17a284cd9">read_matrices_pair</a>, &<a class="code" href="fft__2d_8cpp.html#afc07a94f6f8fca89904a2b6a89bc4e14">fft_2d_1arg</a>) == EXIT_FAILURE)</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <span class="keywordflow">return</span> EXIT_FAILURE;</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="keywordflow">if</span> (<a class="code" href="fft__2d_8cpp.html#a50090af3f56c8a964b17ccd9ea6ba500">test_correctness</a>(<span class="stringliteral">"fft:2d::direct::1_arg"</span>, <a class="code" href="fft__2d_8cpp.html#a7cee249cffcd5d7be1c31ea17a284cd9">read_matrices_pair</a>, &<a class="code" href="fft__2d_8cpp.html#afc07a94f6f8fca89904a2b6a89bc4e14">fft_2d_1arg</a>) == EXIT_FAILURE)</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordflow">return</span> EXIT_FAILURE;</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keywordflow">if</span> (<a class="code" href="fft__2d_8cpp.html#a50090af3f56c8a964b17ccd9ea6ba500">test_correctness</a>(<span class="stringliteral">"fft:2d::direct::big::2_arg"</span>, <a class="code" href="fft__2d_8cpp.html#a7cee249cffcd5d7be1c31ea17a284cd9">read_matrices_pair</a>,</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  &<a class="code" href="fft__2d_8cpp.html#a05ddc634f34ae8fb86372ff8626a059f">fft_2d_2arg</a>) == EXIT_FAILURE)</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordflow">return</span> EXIT_FAILURE;</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="keywordflow">if</span> (<a class="code" href="fft__2d_8cpp.html#a50090af3f56c8a964b17ccd9ea6ba500">test_correctness</a>(<span class="stringliteral">"fft::transpose_inplace"</span>, <a class="code" href="fft__2d_8cpp.html#a7cee249cffcd5d7be1c31ea17a284cd9">read_matrices_pair</a>, &<a class="code" href="fft__2d_8cpp.html#a4eb5cd8352d689f5495ec1ba1ea49f0a">transpose_inplace</a>) == EXIT_FAILURE)</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keywordflow">return</span> EXIT_FAILURE;</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keywordflow">if</span> (<a class="code" href="fft__2d_8cpp.html#a50090af3f56c8a964b17ccd9ea6ba500">test_correctness</a>(<span class="stringliteral">"fft::transpose"</span>, <a class="code" href="fft__2d_8cpp.html#a7cee249cffcd5d7be1c31ea17a284cd9">read_matrices_pair</a>, &<a class="code" href="fft__2d_8cpp.html#a0b36333131d10fd9a0abb3aa21b0b445">transpose</a>) == EXIT_FAILURE)</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keywordflow">return</span> EXIT_FAILURE;</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span> </div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  std::cout << std::endl;</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  std::cout << <span class="stringliteral">"------- Test completed --------"</span> << std::endl;</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  std::cout << std::endl;</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> </div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="keywordflow">return</span> EXIT_SUCCESS;</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> }</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> </div>
<div class="ttc" id="linalg_2opencl_2kernels_2fft_8hpp_html"><div class="ttname"><a href="linalg_2opencl_2kernels_2fft_8hpp.html">fft.hpp</a></div><div class="ttdoc">OpenCL kernel file for FFT operations. </div></div>
<div class="ttc" id="fft__2d_8cpp_html_a4461a05ba16b9052cf36f4752c63619e"><div class="ttname"><a href="fft__2d_8cpp.html#a4461a05ba16b9052cf36f4752c63619e">copy_matrix_to_vector</a></div><div class="ttdeci">void copy_matrix_to_vector(viennacl::matrix< ScalarType > &input, std::vector< ScalarType > &in, unsigned int row, unsigned int col)</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00184">fft_2d.cpp:184</a></div></div>
<div class="ttc" id="opencl_2fft__operations_8hpp_html"><div class="ttname"><a href="opencl_2fft__operations_8hpp.html">fft_operations.hpp</a></div><div class="ttdoc">Implementations of Fast Furier Transformation using OpenCL. </div></div>
<div class="ttc" id="fft__2d_8cpp_html_ad431337acacff9e06c1286095e78f8ac"><div class="ttname"><a href="fft__2d_8cpp.html#ad431337acacff9e06c1286095e78f8ac">test_function_ptr</a></div><div class="ttdeci">ScalarType(* test_function_ptr)(std::vector< ScalarType > &, std::vector< ScalarType > &, unsigned int, unsigned int, unsigned int)</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00046">fft_2d.cpp:46</a></div></div>
<div class="ttc" id="structtest_data_html_a221ded1c886a86b39e9fef197af7c58b"><div class="ttname"><a href="structtest_data.html#a221ded1c886a86b39e9fef197af7c58b">testData::row_num</a></div><div class="ttdeci">unsigned int row_num</div><div class="ttdef"><b>Definition:</b> <a href="fft__1d_8cpp_source.html#l00057">fft_1d.cpp:57</a></div></div>
<div class="ttc" id="fft__2d_8cpp_html_a3042870eb8881681860b088156ccf079"><div class="ttname"><a href="fft__2d_8cpp.html#a3042870eb8881681860b088156ccf079">diff</a></div><div class="ttdeci">ScalarType diff(std::vector< ScalarType > &vec, std::vector< ScalarType > &ref)</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00130">fft_2d.cpp:130</a></div></div>
<div class="ttc" id="fft__2d_8cpp_html_a4b189d809e837b0a80d17a81f0649314"><div class="ttname"><a href="fft__2d_8cpp.html#a4b189d809e837b0a80d17a81f0649314">input_function_ptr</a></div><div class="ttdeci">void(* input_function_ptr)(std::vector< ScalarType > &, std::vector< ScalarType > &, unsigned int &, unsigned int &, unsigned int &, const std::string &)</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00048">fft_2d.cpp:48</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1backend_html_a3707340b27c535438e213e3879b0f0a4"><div class="ttname"><a href="namespaceviennacl_1_1backend.html#a3707340b27c535438e213e3879b0f0a4">viennacl::backend::finish</a></div><div class="ttdeci">void finish()</div><div class="ttdoc">Synchronizes the execution. finish() will only return after all compute kernels (CUDA, OpenCL) have completed. </div><div class="ttdef"><b>Definition:</b> <a href="memory_8hpp_source.html#l00054">memory.hpp:54</a></div></div>
<div class="ttc" id="classviennacl_1_1matrix_html"><div class="ttname"><a href="classviennacl_1_1matrix.html">viennacl::matrix</a></div><div class="ttdoc">A dense matrix class. </div><div class="ttdef"><b>Definition:</b> <a href="forwards_8h_source.html#l00375">forwards.h:375</a></div></div>
<div class="ttc" id="fft__operations_8hpp_html"><div class="ttname"><a href="fft__operations_8hpp.html">fft_operations.hpp</a></div><div class="ttdoc">Implementations of Fast Furier Transformation. </div></div>
<div class="ttc" id="structtest_data_html_ad8e3394939d9f0e3e3f33abb01e28af4"><div class="ttname"><a href="structtest_data.html#ad8e3394939d9f0e3e3f33abb01e28af4">testData::output</a></div><div class="ttdeci">float output[2048]</div><div class="ttdef"><b>Definition:</b> <a href="fft__1d_8cpp_source.html#l00054">fft_1d.cpp:54</a></div></div>
<div class="ttc" id="fft__2d_8cpp_html_aadad85fa5cbf31466487bb0585d1a769"><div class="ttname"><a href="fft__2d_8cpp.html#aadad85fa5cbf31466487bb0585d1a769">diff_max</a></div><div class="ttdeci">ScalarType diff_max(std::vector< ScalarType > &vec, std::vector< ScalarType > &ref)</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00145">fft_2d.cpp:145</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1traits_html_aa2344ea20469f55fbc15a8e9526494d0"><div class="ttname"><a href="namespaceviennacl_1_1traits.html#aa2344ea20469f55fbc15a8e9526494d0">viennacl::traits::size</a></div><div class="ttdeci">vcl_size_t size(VectorType const &vec)</div><div class="ttdoc">Generic routine for obtaining the size of a vector (ViennaCL, uBLAS, etc.) </div><div class="ttdef"><b>Definition:</b> <a href="size_8hpp_source.html#l00239">size.hpp:239</a></div></div>
<div class="ttc" id="structtest_data_html_a17b3748f5f39c787969812b2e8323d9c"><div class="ttname"><a href="structtest_data.html#a17b3748f5f39c787969812b2e8323d9c">testData::col_num</a></div><div class="ttdeci">unsigned int col_num</div><div class="ttdef"><b>Definition:</b> <a href="fft__1d_8cpp_source.html#l00058">fft_1d.cpp:58</a></div></div>
<div class="ttc" id="structtest_data_html"><div class="ttname"><a href="structtest_data.html">testData</a></div><div class="ttdef"><b>Definition:</b> <a href="fft__1d_8cpp_source.html#l00051">fft_1d.cpp:51</a></div></div>
<div class="ttc" id="fft__2d_8cpp_html_a50090af3f56c8a964b17ccd9ea6ba500"><div class="ttname"><a href="fft__2d_8cpp.html#a50090af3f56c8a964b17ccd9ea6ba500">test_correctness</a></div><div class="ttdeci">int test_correctness(const std::string &log_tag, input_function_ptr input_function, test_function_ptr func)</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00286">fft_2d.cpp:286</a></div></div>
<div class="ttc" id="fft__2d_8cpp_html_a4eb5cd8352d689f5495ec1ba1ea49f0a"><div class="ttname"><a href="fft__2d_8cpp.html#a4eb5cd8352d689f5495ec1ba1ea49f0a">transpose_inplace</a></div><div class="ttdeci">ScalarType transpose_inplace(std::vector< ScalarType > &in, std::vector< ScalarType > &out, unsigned int row, unsigned int col, unsigned int)</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00218">fft_2d.cpp:218</a></div></div>
<div class="ttc" id="fft__2d_8cpp_html_ae66f6b31b5ad750f1fe042a706a4e3d4"><div class="ttname"><a href="fft__2d_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a></div><div class="ttdeci">int main()</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00311">fft_2d.cpp:311</a></div></div>
<div class="ttc" id="structtest_data_html_afbeac1b8842462a94a3204945bc54535"><div class="ttname"><a href="structtest_data.html#afbeac1b8842462a94a3204945bc54535">testData::batch_num</a></div><div class="ttdeci">unsigned int batch_num</div><div class="ttdef"><b>Definition:</b> <a href="fft__1d_8cpp_source.html#l00056">fft_1d.cpp:56</a></div></div>
<div class="ttc" id="structtest_data_html_a3c78d34e230ea1a828dceb27180ea700"><div class="ttname"><a href="structtest_data.html#a3c78d34e230ea1a828dceb27180ea700">testData::input</a></div><div class="ttdeci">float input[2048]</div><div class="ttdef"><b>Definition:</b> <a href="fft__1d_8cpp_source.html#l00053">fft_1d.cpp:53</a></div></div>
<div class="ttc" id="fft__2d_8cpp_html_ad5c19ca4f47d3f8ec21232a5af2624e5"><div class="ttname"><a href="fft__2d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a></div><div class="ttdeci">float ScalarType</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00042">fft_2d.cpp:42</a></div></div>
<div class="ttc" id="namespaceviennacl_html_a0a574e6cd04ca0e42298b4ab845700e4"><div class="ttname"><a href="namespaceviennacl.html#a0a574e6cd04ca0e42298b4ab845700e4">viennacl::row</a></div><div class="ttdeci">vector_expression< const matrix_base< NumericT, F >, const unsigned int, op_row > row(const matrix_base< NumericT, F > &A, unsigned int i)</div><div class="ttdef"><b>Definition:</b> <a href="matrix_8hpp_source.html#l00910">matrix.hpp:910</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1linalg_html_ae829451e793471ca5e8751cf89fec950"><div class="ttname"><a href="namespaceviennacl_1_1linalg.html#ae829451e793471ca5e8751cf89fec950">viennacl::linalg::transpose</a></div><div class="ttdeci">void transpose(viennacl::matrix< NumericT, viennacl::row_major, AlignmentV > &input)</div><div class="ttdoc">Inplace_transpose matrix. </div><div class="ttdef"><b>Definition:</b> <a href="fft__operations_8hpp_source.html#l00329">fft_operations.hpp:329</a></div></div>
<div class="ttc" id="fft__2d_8cpp_html_a0b36333131d10fd9a0abb3aa21b0b445"><div class="ttname"><a href="fft__2d_8cpp.html#a0b36333131d10fd9a0abb3aa21b0b445">transpose</a></div><div class="ttdeci">ScalarType transpose(std::vector< ScalarType > &in, std::vector< ScalarType > &out, unsigned int row, unsigned int col, unsigned int)</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00239">fft_2d.cpp:239</a></div></div>
<div class="ttc" id="namespaceviennacl_html_a10b7f8cf6b8864a7aa196d670481a453"><div class="ttname"><a href="namespaceviennacl.html#a10b7f8cf6b8864a7aa196d670481a453">viennacl::copy</a></div><div class="ttdeci">void copy(std::vector< NumericT > &cpu_vec, circulant_matrix< NumericT, AlignmentV > &gpu_mat)</div><div class="ttdoc">Copies a circulant matrix from the std::vector to the OpenCL device (either GPU or multi-core CPU) ...</div><div class="ttdef"><b>Definition:</b> <a href="circulant__matrix_8hpp_source.html#l00150">circulant_matrix.hpp:150</a></div></div>
<div class="ttc" id="cuda_2fft__operations_8hpp_html"><div class="ttname"><a href="cuda_2fft__operations_8hpp.html">fft_operations.hpp</a></div><div class="ttdoc">Implementations of Fast Furier Transformation using cuda. </div></div>
<div class="ttc" id="fft__2d_8cpp_html_af439f7a9be2c4f5746d22bfecb527bdd"><div class="ttname"><a href="fft__2d_8cpp.html#af439f7a9be2c4f5746d22bfecb527bdd">set_values_struct</a></div><div class="ttdeci">void set_values_struct(std::vector< ScalarType > &input, std::vector< ScalarType > &output, unsigned int &rows, unsigned int &cols, unsigned int &batch_size, testData &data)</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00095">fft_2d.cpp:95</a></div></div>
<div class="ttc" id="fft__1d_8cpp_html_ad5c19ca4f47d3f8ec21232a5af2624e5"><div class="ttname"><a href="fft__1d_8cpp.html#ad5c19ca4f47d3f8ec21232a5af2624e5">ScalarType</a></div><div class="ttdeci">float ScalarType</div><div class="ttdef"><b>Definition:</b> <a href="fft__1d_8cpp_source.html#l00042">fft_1d.cpp:42</a></div></div>
<div class="ttc" id="fft_8hpp_html"><div class="ttname"><a href="fft_8hpp.html">fft.hpp</a></div><div class="ttdoc">All routines related to the Fast Fourier Transform. Experimental. </div></div>
<div class="ttc" id="host__based_2fft__operations_8hpp_html"><div class="ttname"><a href="host__based_2fft__operations_8hpp.html">fft_operations.hpp</a></div><div class="ttdoc">Implementations of Fast Furier Transformation using a plain single-threaded or OpenMP-enabled executi...</div></div>
<div class="ttc" id="fft__2d_8cpp_html_a40b89a65d3390cf44a03717ee53eedca"><div class="ttname"><a href="fft__2d_8cpp.html#a40b89a65d3390cf44a03717ee53eedca">copy_vector_to_matrix</a></div><div class="ttdeci">void copy_vector_to_matrix(viennacl::matrix< ScalarType > &input, std::vector< ScalarType > &in, unsigned int row, unsigned int col)</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00170">fft_2d.cpp:170</a></div></div>
<div class="ttc" id="fft__2d_8cpp_html_a05ddc634f34ae8fb86372ff8626a059f"><div class="ttname"><a href="fft__2d_8cpp.html#a05ddc634f34ae8fb86372ff8626a059f">fft_2d_2arg</a></div><div class="ttdeci">ScalarType fft_2d_2arg(std::vector< ScalarType > &in, std::vector< ScalarType > &out, unsigned int row, unsigned int col, unsigned int)</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00263">fft_2d.cpp:263</a></div></div>
<div class="ttc" id="fft__2d_8cpp_html_a7cee249cffcd5d7be1c31ea17a284cd9"><div class="ttname"><a href="fft__2d_8cpp.html#a7cee249cffcd5d7be1c31ea17a284cd9">read_matrices_pair</a></div><div class="ttdeci">void read_matrices_pair(std::vector< ScalarType > &input, std::vector< ScalarType > &output, unsigned int &rows, unsigned int &cols, unsigned int &batch_size, const std::string &log_tag)</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00115">fft_2d.cpp:115</a></div></div>
<div class="ttc" id="fft__2d_8cpp_html_afc07a94f6f8fca89904a2b6a89bc4e14"><div class="ttname"><a href="fft__2d_8cpp.html#afc07a94f6f8fca89904a2b6a89bc4e14">fft_2d_1arg</a></div><div class="ttdeci">ScalarType fft_2d_1arg(std::vector< ScalarType > &in, std::vector< ScalarType > &out, unsigned int row, unsigned int col, unsigned int)</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00197">fft_2d.cpp:197</a></div></div>
<div class="ttc" id="fft__1d_8cpp_html_a56353420d188d1181ae49bf69283b497"><div class="ttname"><a href="fft__1d_8cpp.html#a56353420d188d1181ae49bf69283b497">fft</a></div><div class="ttdeci">ScalarType fft(std::vector< ScalarType > &in, std::vector< ScalarType > &out, unsigned int, unsigned int, unsigned int batch_size)</div><div class="ttdef"><b>Definition:</b> <a href="fft__1d_8cpp_source.html#l00719">fft_1d.cpp:719</a></div></div>
<div class="ttc" id="fft__2d_8cpp_html_af6f913fdc71ad35c8ec4d99fe8671987"><div class="ttname"><a href="fft__2d_8cpp.html#af6f913fdc71ad35c8ec4d99fe8671987">EPS</a></div><div class="ttdeci">const ScalarType EPS</div><div class="ttdef"><b>Definition:</b> <a href="fft__2d_8cpp_source.html#l00044">fft_2d.cpp:44</a></div></div>
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