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<a href="a00062.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">// File: simddetect.h</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Description: Architecture detector.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// Author: Stefan Weil (based on code from Ray Smith)</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// (C) Copyright 2014, Google Inc.</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// You may obtain a copy of the License at</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// limitations under the License.</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"></span><span class="preprocessor">#ifndef TESSERACT_ARCH_SIMDDETECT_H_</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#define TESSERACT_ARCH_SIMDDETECT_H_</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include "<a class="code" href="a00560.html">platform.h</a>"</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// Architecture detector. Add code here to detect any other architectures for</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// SIMD-based faster dot product functions. Intended to be a single static</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// object, but it does no real harm to have more than one.</span></div><div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="a02238.html"> 25</a></span> <span class="keyword">class </span><a class="code" href="a02238.html">SIMDDetect</a> {</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="comment">// Returns true if AVX is available on this system.</span></div><div class="line"><a name="l00028"></a><span class="lineno"><a class="line" href="a02238.html#ad6a40eb8592c2b548f7ecf451b7c29d9"> 28</a></span>  <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="a02238.html#ad6a40eb8592c2b548f7ecf451b7c29d9">IsAVXAvailable</a>() { <span class="keywordflow">return</span> detector.avx_available_; }</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="comment">// Returns true if AVX2 (integer support) is available on this system.</span></div><div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="a02238.html#acf8a5862e2ea087d915d41d4ef5a2c85"> 30</a></span>  <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="a02238.html#acf8a5862e2ea087d915d41d4ef5a2c85">IsAVX2Available</a>() { <span class="keywordflow">return</span> detector.avx2_available_; }</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="comment">// Returns true if AVX512 Foundation (float) is available on this system.</span></div><div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="a02238.html#acff5da012a99fa5120e43f10a4cd074e"> 32</a></span>  <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="a02238.html#acff5da012a99fa5120e43f10a4cd074e">IsAVX512FAvailable</a>() {</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keywordflow">return</span> detector.avx512F_available_;</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  }</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="comment">// Returns true if AVX512 integer is available on this system.</span></div><div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="a02238.html#aeeaab2558bcd12b566129a0cf649e30a"> 36</a></span>  <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="a02238.html#aeeaab2558bcd12b566129a0cf649e30a">IsAVX512BWAvailable</a>() {</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordflow">return</span> detector.avx512BW_available_;</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  }</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="comment">// Returns true if SSE4.1 is available on this system.</span></div><div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="a02238.html#ad82ce72ec36f91946ff1796e25e7ff7f"> 40</a></span>  <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="a02238.html#ad82ce72ec36f91946ff1796e25e7ff7f">IsSSEAvailable</a>() { <span class="keywordflow">return</span> detector.sse_available_; }</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>  <span class="keyword">private</span>:</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// Constructor, must set all static member variables.</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <a class="code" href="a02238.html">SIMDDetect</a>();</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="comment">// Singleton.</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">static</span> <a class="code" href="a02238.html">SIMDDetect</a> detector;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="comment">// If true, then AVX has been detected.</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">static</span> <a class="code" href="a00560.html#a86e51270628c53ce7e2c23b1c2b4490e">TESS_API</a> <span class="keywordtype">bool</span> avx_available_;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">static</span> <a class="code" href="a00560.html#a86e51270628c53ce7e2c23b1c2b4490e">TESS_API</a> <span class="keywordtype">bool</span> avx2_available_;</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">static</span> <a class="code" href="a00560.html#a86e51270628c53ce7e2c23b1c2b4490e">TESS_API</a> <span class="keywordtype">bool</span> avx512F_available_;</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">static</span> <a class="code" href="a00560.html#a86e51270628c53ce7e2c23b1c2b4490e">TESS_API</a> <span class="keywordtype">bool</span> avx512BW_available_;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">// If true, then SSe4.1 has been detected.</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">static</span> <a class="code" href="a00560.html#a86e51270628c53ce7e2c23b1c2b4490e">TESS_API</a> <span class="keywordtype">bool</span> sse_available_;</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> };</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor">#endif // TESSERACT_ARCH_SIMDDETECT_H_</span></div><div class="ttc" id="a00560_html_a86e51270628c53ce7e2c23b1c2b4490e"><div class="ttname"><a href="a00560.html#a86e51270628c53ce7e2c23b1c2b4490e">TESS_API</a></div><div class="ttdeci">#define TESS_API</div><div class="ttdef"><b>Definition:</b> <a href="a00560_source.html#l00074">platform.h:74</a></div></div>
<div class="ttc" id="a02238_html_acff5da012a99fa5120e43f10a4cd074e"><div class="ttname"><a href="a02238.html#acff5da012a99fa5120e43f10a4cd074e">SIMDDetect::IsAVX512FAvailable</a></div><div class="ttdeci">static bool IsAVX512FAvailable()</div><div class="ttdef"><b>Definition:</b> <a href="a00062_source.html#l00032">simddetect.h:32</a></div></div>
<div class="ttc" id="a02238_html_aeeaab2558bcd12b566129a0cf649e30a"><div class="ttname"><a href="a02238.html#aeeaab2558bcd12b566129a0cf649e30a">SIMDDetect::IsAVX512BWAvailable</a></div><div class="ttdeci">static bool IsAVX512BWAvailable()</div><div class="ttdef"><b>Definition:</b> <a href="a00062_source.html#l00036">simddetect.h:36</a></div></div>
<div class="ttc" id="a02238_html"><div class="ttname"><a href="a02238.html">SIMDDetect</a></div><div class="ttdef"><b>Definition:</b> <a href="a00062_source.html#l00025">simddetect.h:25</a></div></div>
<div class="ttc" id="a02238_html_ad82ce72ec36f91946ff1796e25e7ff7f"><div class="ttname"><a href="a02238.html#ad82ce72ec36f91946ff1796e25e7ff7f">SIMDDetect::IsSSEAvailable</a></div><div class="ttdeci">static bool IsSSEAvailable()</div><div class="ttdef"><b>Definition:</b> <a href="a00062_source.html#l00040">simddetect.h:40</a></div></div>
<div class="ttc" id="a02238_html_ad6a40eb8592c2b548f7ecf451b7c29d9"><div class="ttname"><a href="a02238.html#ad6a40eb8592c2b548f7ecf451b7c29d9">SIMDDetect::IsAVXAvailable</a></div><div class="ttdeci">static bool IsAVXAvailable()</div><div class="ttdef"><b>Definition:</b> <a href="a00062_source.html#l00028">simddetect.h:28</a></div></div>
<div class="ttc" id="a00560_html"><div class="ttname"><a href="a00560.html">platform.h</a></div></div>
<div class="ttc" id="a02238_html_acf8a5862e2ea087d915d41d4ef5a2c85"><div class="ttname"><a href="a02238.html#acf8a5862e2ea087d915d41d4ef5a2c85">SIMDDetect::IsAVX2Available</a></div><div class="ttdeci">static bool IsAVX2Available()</div><div class="ttdef"><b>Definition:</b> <a href="a00062_source.html#l00030">simddetect.h:30</a></div></div>
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