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<div class="title">utils.hpp</div> </div>
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<a href="ocl_2utils_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef VIENNACL_OCL_UTILS_HPP_</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define VIENNACL_OCL_UTILS_HPP_</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">/* =========================================================================</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> Copyright (c) 2010-2016, Institute for Microelectronics,</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> Institute for Analysis and Scientific Computing,</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> TU Wien.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> Portions of this software are copyright by UChicago Argonne, LLC.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> -----------------</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> ViennaCL - The Vienna Computing Library</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> -----------------</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"></span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> Project Head: Karl Rupp rupp@iue.tuwien.ac.at</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"></span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> (A list of authors and contributors can be found in the manual)</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"></span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> License: MIT (X11), see file LICENSE in the base directory</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">============================================================================= */</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <vector></span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <string></span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "<a class="code" href="backend_8hpp.html">viennacl/ocl/backend.hpp</a>"</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "<a class="code" href="device_8hpp.html">viennacl/ocl/device.hpp</a>"</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">namespace </span>viennacl</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> {</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">namespace </span>ocl</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> {</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">template</span><<span class="keyword">typename</span> ScalarType></div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="structviennacl_1_1ocl_1_1_d_o_u_b_l_e___p_r_e_c_i_s_i_o_n___c_h_e_c_k_e_r.html"> 38</a></span> <span class="keyword">struct </span><a class="code" href="structviennacl_1_1ocl_1_1_d_o_u_b_l_e___p_r_e_c_i_s_i_o_n___c_h_e_c_k_e_r.html">DOUBLE_PRECISION_CHECKER</a></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> {</div>
<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="structviennacl_1_1ocl_1_1_d_o_u_b_l_e___p_r_e_c_i_s_i_o_n___c_h_e_c_k_e_r.html#ae23d18c854e1df43cd329a5c1fdd6d9f"> 40</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="structviennacl_1_1ocl_1_1_d_o_u_b_l_e___p_r_e_c_i_s_i_o_n___c_h_e_c_k_e_r.html#ae23d18c854e1df43cd329a5c1fdd6d9f">apply</a>(<a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> <span class="keyword">const</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"> 42</span> </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">template</span><></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">struct </span>DOUBLE_PRECISION_CHECKER<double></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> {</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="structviennacl_1_1ocl_1_1_d_o_u_b_l_e___p_r_e_c_i_s_i_o_n___c_h_e_c_k_e_r.html#ae23d18c854e1df43cd329a5c1fdd6d9f">apply</a>(<a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> <span class="keyword">const</span> & ctx)</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  {</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">if</span> (!ctx.<a class="code" href="classviennacl_1_1ocl_1_1context.html#ab4d9064422cc8c183a14ad77c2a7b49b">current_device</a>().<a class="code" href="classviennacl_1_1ocl_1_1device.html#a5182025f56c76de6770e26b14165b00a">double_support</a>())</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">throw</span> <a class="code" href="classviennacl_1_1ocl_1_1double__precision__not__provided__error.html">viennacl::ocl::double_precision_not_provided_error</a>();</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  }</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> };</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div>
<div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="structviennacl_1_1ocl_1_1type__to__string.html"> 57</a></span> <span class="keyword">struct </span><a class="code" href="structviennacl_1_1ocl_1_1type__to__string.html">type_to_string</a>;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="structviennacl_1_1ocl_1_1type__to__string.html">type_to_string</a><char> { <span class="keyword">static</span> std::string apply() { <span class="keywordflow">return</span> <span class="stringliteral">"char"</span>; } };</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels_1_1detail.html#a464ca905eab3e302694bc23c1edd45e1">type_to_string</a><short> { <span class="keyword">static</span> std::string apply() { <span class="keywordflow">return</span> <span class="stringliteral">"short"</span>; } };</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels_1_1detail.html#a464ca905eab3e302694bc23c1edd45e1">type_to_string</a><int> { <span class="keyword">static</span> std::string apply() { <span class="keywordflow">return</span> <span class="stringliteral">"int"</span>; } };</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels_1_1detail.html#a464ca905eab3e302694bc23c1edd45e1">type_to_string</a><long> { <span class="keyword">static</span> std::string apply() { <span class="keywordflow">return</span> <span class="stringliteral">"long"</span>; } };</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels_1_1detail.html#a464ca905eab3e302694bc23c1edd45e1">type_to_string</a><unsigned char> { <span class="keyword">static</span> std::string apply() { <span class="keywordflow">return</span> <span class="stringliteral">"uchar"</span>; } };</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels_1_1detail.html#a464ca905eab3e302694bc23c1edd45e1">type_to_string</a><unsigned short> { <span class="keyword">static</span> std::string apply() { <span class="keywordflow">return</span> <span class="stringliteral">"ushort"</span>; } };</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels_1_1detail.html#a464ca905eab3e302694bc23c1edd45e1">type_to_string</a><unsigned int> { <span class="keyword">static</span> std::string apply() { <span class="keywordflow">return</span> <span class="stringliteral">"uint"</span>; } };</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels_1_1detail.html#a464ca905eab3e302694bc23c1edd45e1">type_to_string</a><unsigned long> { <span class="keyword">static</span> std::string apply() { <span class="keywordflow">return</span> <span class="stringliteral">"ulong"</span>; } };</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels_1_1detail.html#a464ca905eab3e302694bc23c1edd45e1">type_to_string</a><float> { <span class="keyword">static</span> std::string apply() { <span class="keywordflow">return</span> <span class="stringliteral">"float"</span>; } };</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels_1_1detail.html#a464ca905eab3e302694bc23c1edd45e1">type_to_string</a><double> { <span class="keyword">static</span> std::string apply() { <span class="keywordflow">return</span> <span class="stringliteral">"double"</span>; } };</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div>
<div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#ae6cefd8a9e31c46c74dbf0ca3fee99b7"> 75</a></span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#ae6cefd8a9e31c46c74dbf0ca3fee99b7">append_double_precision_pragma</a>(<a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> <span class="keyword">const</span> & <span class="comment">/*ctx*/</span>, std::string & <span class="comment">/*source*/</span>) {}</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="keyword">template</span><></div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#a3d0a622dfc7a23f67a910cdf7ba136d1"> 78</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#a3d0a622dfc7a23f67a910cdf7ba136d1">append_double_precision_pragma<double></a>(<a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> <span class="keyword">const</span> & ctx, std::string & source)</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> {</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  source.append(<span class="stringliteral">"#pragma OPENCL EXTENSION "</span> + ctx.<a class="code" href="classviennacl_1_1ocl_1_1context.html#ab4d9064422cc8c183a14ad77c2a7b49b">current_device</a>().<a class="code" href="classviennacl_1_1ocl_1_1device.html#afd017572cf46fa80de40baf9eef1cb25">double_support_extension</a>() + <span class="stringliteral">" : enable\n\n"</span>);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> }</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> } <span class="comment">//ocl</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> } <span class="comment">//viennacl</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor">#endif</span></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1context_html_ab4d9064422cc8c183a14ad77c2a7b49b"><div class="ttname"><a href="classviennacl_1_1ocl_1_1context.html#ab4d9064422cc8c183a14ad77c2a7b49b">viennacl::ocl::context::current_device</a></div><div class="ttdeci">viennacl::ocl::device const & current_device() const </div><div class="ttdoc">Returns the current device. </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2context_8hpp_source.html#l00112">context.hpp:112</a></div></div>
<div class="ttc" id="device_8hpp_html"><div class="ttname"><a href="device_8hpp.html">device.hpp</a></div><div class="ttdoc">Represents an OpenCL device within ViennaCL. </div></div>
<div class="ttc" id="namespaceviennacl_1_1ocl_html_a3d0a622dfc7a23f67a910cdf7ba136d1"><div class="ttname"><a href="namespaceviennacl_1_1ocl.html#a3d0a622dfc7a23f67a910cdf7ba136d1">viennacl::ocl::append_double_precision_pragma< double ></a></div><div class="ttdeci">void append_double_precision_pragma< double >(viennacl::ocl::context const &ctx, std::string &source)</div><div class="ttdef"><b>Definition:</b> <a href="ocl_2utils_8hpp_source.html#l00078">utils.hpp:78</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1context_html"><div class="ttname"><a href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a></div><div class="ttdoc">Manages an OpenCL context and provides the respective convenience functions for creating buffers...</div><div class="ttdef"><b>Definition:</b> <a href="ocl_2context_8hpp_source.html#l00055">context.hpp:55</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1ocl_html_ae6cefd8a9e31c46c74dbf0ca3fee99b7"><div class="ttname"><a href="namespaceviennacl_1_1ocl.html#ae6cefd8a9e31c46c74dbf0ca3fee99b7">viennacl::ocl::append_double_precision_pragma</a></div><div class="ttdeci">void append_double_precision_pragma(viennacl::ocl::context const &, std::string &)</div><div class="ttdef"><b>Definition:</b> <a href="ocl_2utils_8hpp_source.html#l00075">utils.hpp:75</a></div></div>
<div class="ttc" id="structviennacl_1_1ocl_1_1_d_o_u_b_l_e___p_r_e_c_i_s_i_o_n___c_h_e_c_k_e_r_html_ae23d18c854e1df43cd329a5c1fdd6d9f"><div class="ttname"><a href="structviennacl_1_1ocl_1_1_d_o_u_b_l_e___p_r_e_c_i_s_i_o_n___c_h_e_c_k_e_r.html#ae23d18c854e1df43cd329a5c1fdd6d9f">viennacl::ocl::DOUBLE_PRECISION_CHECKER::apply</a></div><div class="ttdeci">static void apply(viennacl::ocl::context const &)</div><div class="ttdef"><b>Definition:</b> <a href="ocl_2utils_8hpp_source.html#l00040">utils.hpp:40</a></div></div>
<div class="ttc" id="structviennacl_1_1ocl_1_1_d_o_u_b_l_e___p_r_e_c_i_s_i_o_n___c_h_e_c_k_e_r_html"><div class="ttname"><a href="structviennacl_1_1ocl_1_1_d_o_u_b_l_e___p_r_e_c_i_s_i_o_n___c_h_e_c_k_e_r.html">viennacl::ocl::DOUBLE_PRECISION_CHECKER</a></div><div class="ttdoc">Ensures that double precision types are only allocated if it is supported by the device. If double precision is requested for a device not capable of providing that, a double_precision_not_provided_error is thrown. </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2utils_8hpp_source.html#l00038">utils.hpp:38</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1double__precision__not__provided__error_html"><div class="ttname"><a href="classviennacl_1_1ocl_1_1double__precision__not__provided__error.html">viennacl::ocl::double_precision_not_provided_error</a></div><div class="ttdoc">Exception thrown if the user wants to use double precision arithmetics, but the device does not suppo...</div><div class="ttdef"><b>Definition:</b> <a href="error_8hpp_source.html#l00573">error.hpp:573</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1device_html_a5182025f56c76de6770e26b14165b00a"><div class="ttname"><a href="classviennacl_1_1ocl_1_1device.html#a5182025f56c76de6770e26b14165b00a">viennacl::ocl::device::double_support</a></div><div class="ttdeci">bool double_support() const </div><div class="ttdoc">ViennaCL convenience function: Returns true if the device supports double precision. </div><div class="ttdef"><b>Definition:</b> <a href="device_8hpp_source.html#l00956">device.hpp:956</a></div></div>
<div class="ttc" id="backend_8hpp_html"><div class="ttname"><a href="backend_8hpp.html">backend.hpp</a></div><div class="ttdoc">Implementations of the OpenCL backend, where all contexts are stored in. </div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1device_html_afd017572cf46fa80de40baf9eef1cb25"><div class="ttname"><a href="classviennacl_1_1ocl_1_1device.html#afd017572cf46fa80de40baf9eef1cb25">viennacl::ocl::device::double_support_extension</a></div><div class="ttdeci">std::string double_support_extension() const </div><div class="ttdoc">ViennaCL convenience function: Returns the device extension which enables double precision (usually c...</div><div class="ttdef"><b>Definition:</b> <a href="device_8hpp_source.html#l00967">device.hpp:967</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels_1_1detail_html_a464ca905eab3e302694bc23c1edd45e1"><div class="ttname"><a href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels_1_1detail.html#a464ca905eab3e302694bc23c1edd45e1">viennacl::linalg::opencl::kernels::detail::type_to_string</a></div><div class="ttdeci">std::string type_to_string(viennacl::row_major)</div><div class="ttdef"><b>Definition:</b> <a href="linalg_2opencl_2kernels_2matrix_8hpp_source.html#l00917">matrix.hpp:917</a></div></div>
<div class="ttc" id="structviennacl_1_1ocl_1_1type__to__string_html"><div class="ttname"><a href="structviennacl_1_1ocl_1_1type__to__string.html">viennacl::ocl::type_to_string</a></div><div class="ttdoc">Helper class for converting a type to its string representation. </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2utils_8hpp_source.html#l00057">utils.hpp:57</a></div></div>
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