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<a href="spatial__pool_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#ifndef MSHADOW_EXTENSION_SPATIAL_POOL_H_</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#define MSHADOW_EXTENSION_SPATIAL_POOL_H_</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#include &lt;algorithm&gt;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="preprocessor">#include &quot;../extension.h&quot;</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacemshadow.html">mshadow</a> {</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="keyword">namespace </span>expr {</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Reducer, <span class="keyword">typename</span> SrcExp, <span class="keyword">typename</span> DType, <span class="keywordtype">int</span> srcdim&gt;</div>
<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="structmshadow_1_1expr_1_1PoolingExp.html"> 39</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html">PoolingExp</a>:</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keyword">public</span> <a class="code" href="structmshadow_1_1expr_1_1MakeTensorExp.html">MakeTensorExp</a>&lt;PoolingExp&lt;Reducer, SrcExp, DType, srcdim&gt;,</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; SrcExp, srcdim, DType&gt; {</div>
<div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="structmshadow_1_1expr_1_1PoolingExp.html#a15c8573a6a56f4577a1bb06613ca9629"> 43</a></span>&#160; <span class="keyword">const</span> SrcExp &amp;<a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a15c8573a6a56f4577a1bb06613ca9629">src_</a>;</div>
<div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="structmshadow_1_1expr_1_1PoolingExp.html#a87a2f8dea4300ff77a98a83572ca23fb"> 45</a></span>&#160; <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a87a2f8dea4300ff77a98a83572ca23fb">ksize_y_</a>;</div>
<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="structmshadow_1_1expr_1_1PoolingExp.html#a31e19cfcb412409f1c352f013a88a101"> 47</a></span>&#160; <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a31e19cfcb412409f1c352f013a88a101">ksize_x_</a>;</div>
<div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="structmshadow_1_1expr_1_1PoolingExp.html#ae8c35b8142a26fa5e208f1d6e25c4c75"> 49</a></span>&#160; <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#ae8c35b8142a26fa5e208f1d6e25c4c75">kstride_y_</a>;</div>
<div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="structmshadow_1_1expr_1_1PoolingExp.html#a6d9539a126f13e28774e409f4d6c69fe"> 51</a></span>&#160; <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a6d9539a126f13e28774e409f4d6c69fe">kstride_x_</a>;</div>
<div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="structmshadow_1_1expr_1_1PoolingExp.html#a95490e3fa6c9cc2d876f46101813f317"> 53</a></span>&#160; <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a95490e3fa6c9cc2d876f46101813f317">src_height_</a>;</div>
<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="structmshadow_1_1expr_1_1PoolingExp.html#aab57ef1700fe88f13ce906ef5757e55a"> 55</a></span>&#160; <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#aab57ef1700fe88f13ce906ef5757e55a">src_width_</a>;</div>
<div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="structmshadow_1_1expr_1_1PoolingExp.html#ab95e8c1880665da294f6e69ac2dc708b"> 57</a></span>&#160; <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#ab95e8c1880665da294f6e69ac2dc708b">PoolingExp</a>(<span class="keyword">const</span> SrcExp &amp;src,</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> ksize_y, <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> ksize_x, <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> kstride_y, <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> kstride_x)</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; : <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a15c8573a6a56f4577a1bb06613ca9629">src_</a>(src), <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a87a2f8dea4300ff77a98a83572ca23fb">ksize_y_</a>(ksize_y), <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a31e19cfcb412409f1c352f013a88a101">ksize_x_</a>(ksize_x),</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#ae8c35b8142a26fa5e208f1d6e25c4c75">kstride_y_</a>(kstride_y), <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a6d9539a126f13e28774e409f4d6c69fe">kstride_x_</a>(kstride_x) {</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <a class="code" href="structmshadow_1_1Shape.html">Shape&lt;srcdim&gt;</a> sshape = <a class="code" href="structmshadow_1_1expr_1_1ShapeCheck.html#af44e6a3b97cf3b245bc1b7ad4cacb306">ShapeCheck&lt;srcdim, SrcExp&gt;::Check</a>(<a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a15c8573a6a56f4577a1bb06613ca9629">src_</a>);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; CHECK(sshape[srcdim - 1] &gt;= ksize_x &amp;&amp; sshape[srcdim - 2] &gt;= ksize_y)</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; &lt;&lt; <span class="stringliteral">&quot;PoolingExp: kernel must be smaller than image&quot;</span>;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; this-&gt;src_height_ = sshape[srcdim - 2];</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; this-&gt;src_width_ = sshape[srcdim - 1];</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; this-&gt;<a class="code" href="structmshadow_1_1expr_1_1MakeTensorExp.html#a2a2f9b6b828035ea38bfb8620db42a82">shape_</a> = sshape;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; this-&gt;<a class="code" href="structmshadow_1_1expr_1_1MakeTensorExp.html#a2a2f9b6b828035ea38bfb8620db42a82">shape_</a>[srcdim - 2] = (<a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a95490e3fa6c9cc2d876f46101813f317">src_height_</a> - ksize_y) / kstride_y + 1;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; this-&gt;<a class="code" href="structmshadow_1_1expr_1_1MakeTensorExp.html#a2a2f9b6b828035ea38bfb8620db42a82">shape_</a>[srcdim - 1] = (<a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#aab57ef1700fe88f13ce906ef5757e55a">src_width_</a> - ksize_x) / kstride_x + 1;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; }</div>
<div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="structmshadow_1_1expr_1_1PoolingExp.html#a46902e1b64dfea8aaa9382cbc86ae216"> 71</a></span>&#160; <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a46902e1b64dfea8aaa9382cbc86ae216">PoolingExp</a>(<span class="keyword">const</span> SrcExp &amp;src, <a class="code" href="structmshadow_1_1Shape.html">Shape&lt;2&gt;</a> pshape,</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> ksize_y, <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> ksize_x, <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> kstride_y, <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> kstride_x)</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; : <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a15c8573a6a56f4577a1bb06613ca9629">src_</a>(src), <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a87a2f8dea4300ff77a98a83572ca23fb">ksize_y_</a>(ksize_y), <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a31e19cfcb412409f1c352f013a88a101">ksize_x_</a>(ksize_x),</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#ae8c35b8142a26fa5e208f1d6e25c4c75">kstride_y_</a>(kstride_y), <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a6d9539a126f13e28774e409f4d6c69fe">kstride_x_</a>(kstride_x) {</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <a class="code" href="structmshadow_1_1Shape.html">Shape&lt;srcdim&gt;</a> sshape = <a class="code" href="structmshadow_1_1expr_1_1ShapeCheck.html#af44e6a3b97cf3b245bc1b7ad4cacb306">ShapeCheck&lt;srcdim, SrcExp&gt;::Check</a>(<a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html#a15c8573a6a56f4577a1bb06613ca9629">src_</a>);</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; CHECK(sshape[srcdim - 1] &gt;= ksize_x &amp;&amp; sshape[srcdim - 2] &gt;= ksize_y)</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; &lt;&lt; <span class="stringliteral">&quot;PoolingExp: kernel must be smaller than image&quot;</span>;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; this-&gt;src_height_ = sshape[srcdim - 2];</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; this-&gt;src_width_ = sshape[srcdim - 1];</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; this-&gt;<a class="code" href="structmshadow_1_1expr_1_1MakeTensorExp.html#a2a2f9b6b828035ea38bfb8620db42a82">shape_</a> = sshape;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; this-&gt;<a class="code" href="structmshadow_1_1expr_1_1MakeTensorExp.html#a2a2f9b6b828035ea38bfb8620db42a82">shape_</a>[srcdim - 2] = pshape[0];</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; this-&gt;<a class="code" href="structmshadow_1_1expr_1_1MakeTensorExp.html#a2a2f9b6b828035ea38bfb8620db42a82">shape_</a>[srcdim - 1] = pshape[1];</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; }</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;};</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Reducer, <span class="keyword">typename</span> SrcExp, <span class="keyword">typename</span> DType, <span class="keywordtype">int</span> etype&gt;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="keyword">inline</span> PoolingExp&lt;Reducer, SrcExp, DType, ExpInfo&lt;SrcExp&gt;::kDim&gt;</div>
<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="namespacemshadow_1_1expr.html#a9c0904ddf79b3f0df6d1b7747c71d921"> 100</a></span>&#160;<a class="code" href="namespacemshadow_1_1expr.html#a9c0904ddf79b3f0df6d1b7747c71d921">pool</a>(<span class="keyword">const</span> <a class="code" href="structmshadow_1_1expr_1_1Exp.html">Exp&lt;SrcExp, DType, etype&gt;</a> &amp;src,</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> ksize_y, <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> ksize_x, <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> kstride_y, <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> kstride_x) {</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <a class="code" href="structmshadow_1_1expr_1_1TypeCheckPass.html">TypeCheckPass&lt;ExpInfo&lt;SrcExp&gt;::kDim</a> &gt;= 2&gt;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; ::Error_Expression_Does_Not_Meet_Dimension_Req();</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keywordflow">return</span> <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html">PoolingExp&lt;Reducer, SrcExp, DType, ExpInfo&lt;SrcExp&gt;::kDim</a>&gt;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; (src.<a class="code" href="structmshadow_1_1expr_1_1Exp.html#adb7e4afd0baed78d66cff87de0a6621f">self</a>(), ksize_y, ksize_x, kstride_y, kstride_x);</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;}</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Reducer, <span class="keyword">typename</span> SrcExp,</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <span class="keyword">typename</span> DType, <span class="keywordtype">int</span> etype&gt;</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="keyword">inline</span> PoolingExp&lt;Reducer, SrcExp, DType, ExpInfo&lt;SrcExp&gt;::kDim&gt;</div>
<div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="namespacemshadow_1_1expr.html#aca58fca4a4298af774668967daabd12c"> 124</a></span>&#160;<a class="code" href="namespacemshadow_1_1expr.html#a9c0904ddf79b3f0df6d1b7747c71d921">pool</a>(<span class="keyword">const</span> <a class="code" href="structmshadow_1_1expr_1_1Exp.html">Exp&lt;SrcExp, DType, etype&gt;</a> &amp;src, <a class="code" href="structmshadow_1_1Shape.html">Shape&lt;2&gt;</a> pshape,</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> ksize_y, <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> ksize_x, <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> kstride_y, <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> kstride_x) {</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <a class="code" href="structmshadow_1_1expr_1_1TypeCheckPass.html">TypeCheckPass&lt;ExpInfo&lt;SrcExp&gt;::kDim</a> &gt;= 2&gt;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; ::Error_Expression_Does_Not_Meet_Dimension_Req();</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; <span class="keywordflow">return</span> <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html">PoolingExp&lt;Reducer, SrcExp, DType, ExpInfo&lt;SrcExp&gt;::kDim</a>&gt;</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; (src.<a class="code" href="structmshadow_1_1expr_1_1Exp.html#adb7e4afd0baed78d66cff87de0a6621f">self</a>(), pshape, ksize_y, ksize_x, kstride_y, kstride_x);</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;}</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="comment">//----------------------</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;<span class="comment">// Execution plan</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;<span class="comment">//----------------------</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Reducer, <span class="keyword">typename</span> SrcExp, <span class="keyword">typename</span> DType, <span class="keywordtype">int</span> srcdim&gt;</div>
<div class="line"><a name="l00135"></a><span class="lineno"><a class="line" href="structmshadow_1_1expr_1_1Plan_3_01PoolingExp_3_01Reducer_00_01SrcExp_00_01DType_00_01srcdim_01_4_00_01DType_01_4.html"> 135</a></span>&#160;<span class="keyword">struct </span><a class="code" href="classmshadow_1_1expr_1_1Plan.html">Plan</a>&lt;<a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html">PoolingExp</a>&lt; Reducer, SrcExp, DType, srcdim&gt;, DType&gt; {</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="structmshadow_1_1expr_1_1Plan_3_01PoolingExp_3_01Reducer_00_01SrcExp_00_01DType_00_01srcdim_01_4_00_01DType_01_4.html#a8c667911a28c5a88b6046bfb245d1820"> 137</a></span>&#160; <span class="keyword">explicit</span> <a class="code" href="structmshadow_1_1expr_1_1Plan_3_01PoolingExp_3_01Reducer_00_01SrcExp_00_01DType_00_01srcdim_01_4_00_01DType_01_4.html#a8c667911a28c5a88b6046bfb245d1820">Plan</a>(<span class="keyword">const</span> <a class="code" href="structmshadow_1_1expr_1_1PoolingExp.html">PoolingExp&lt;Reducer, SrcExp, DType, srcdim&gt;</a> &amp;e)</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; : src_(<a class="code" href="namespacemshadow_1_1expr.html#aefd008a0bf012dc8fb99d9bbcca7a078">MakePlan</a>(e.src_)),</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; ksize_y_(e.ksize_y_), ksize_x_(e.ksize_x_),</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; kstride_y_(e.kstride_y_), kstride_x_(e.kstride_x_),</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; src_height_(e.src_height_), src_width_(e.src_width_),</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; new_height_(e.shape_[srcdim - 2]) {}</div>
<div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="structmshadow_1_1expr_1_1Plan_3_01PoolingExp_3_01Reducer_00_01SrcExp_00_01DType_00_01srcdim_01_4_00_01DType_01_4.html#a7de70a6413d79b6da2272c31231191d8"> 143</a></span>&#160; <a class="code" href="3rdparty_2mshadow_2mshadow_2base_8h.html#af205b8ab4d8733133d590df7d2639d69">MSHADOW_XINLINE</a> DType <a class="code" href="structmshadow_1_1expr_1_1Plan_3_01PoolingExp_3_01Reducer_00_01SrcExp_00_01DType_00_01srcdim_01_4_00_01DType_01_4.html#a7de70a6413d79b6da2272c31231191d8">Eval</a>(<a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> i, <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> j)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; <span class="keyword">using namespace </span><a class="code" href="namespacestd.html">std</a>;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <span class="keyword">const</span> <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> py = i % new_height_;</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <span class="keyword">const</span> <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> y_start = py * kstride_y_;</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; <span class="keyword">const</span> <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> y_end = min(y_start + ksize_y_, src_height_);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; <span class="keyword">const</span> <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> px = j;</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; <span class="keyword">const</span> <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> x_start = px * kstride_x_;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; <span class="keyword">const</span> <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> x_end = min(x_start + ksize_x_, src_width_);</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; <span class="keyword">const</span> <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> c = i / new_height_;</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; </div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; DType res; Reducer::SetInitValue(res);</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; <span class="keywordflow">for</span> (<a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> y = y_start; y &lt; y_end; ++y) {</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; <span class="keywordflow">for</span> (<a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> x = x_start; x &lt; x_end; ++x) {</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; Reducer::Reduce(res, src_.Eval(c * src_height_ + y, x));</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; }</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; }</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; }</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; </div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; <a class="code" href="classmshadow_1_1expr_1_1Plan.html">Plan&lt;SrcExp, DType&gt;</a> src_;</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; <span class="keyword">const</span> <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> ksize_y_, ksize_x_, kstride_y_, kstride_x_;</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; <span class="keyword">const</span> <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> src_height_, src_width_;</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; <span class="keyword">const</span> <a class="code" href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">index_t</a> new_height_;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;};</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;} <span class="comment">// namespace expr</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;} <span class="comment">// namespace mshadow</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;<span class="preprocessor">#endif // MSHADOW_EXTENSION_SPATIAL_POOL_H_</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="astructmshadow_1_1expr_1_1PoolingExp_html"><div class="ttname"><a href="structmshadow_1_1expr_1_1PoolingExp.html">mshadow::expr::PoolingExp</a></div><div class="ttdoc">pooling expression, do reduction over local patches of a image</div><div class="ttdef"><b>Definition:</b> spatial_pool.h:39</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1Exp_html_adb7e4afd0baed78d66cff87de0a6621f"><div class="ttname"><a href="structmshadow_1_1expr_1_1Exp.html#adb7e4afd0baed78d66cff87de0a6621f">mshadow::expr::Exp::self</a></div><div class="ttdeci">const SubType &amp; self(void) const</div><div class="ttdef"><b>Definition:</b> expression.h:82</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1PoolingExp_html_ae8c35b8142a26fa5e208f1d6e25c4c75"><div class="ttname"><a href="structmshadow_1_1expr_1_1PoolingExp.html#ae8c35b8142a26fa5e208f1d6e25c4c75">mshadow::expr::PoolingExp::kstride_y_</a></div><div class="ttdeci">index_t kstride_y_</div><div class="ttdoc">kernel stride in y directory</div><div class="ttdef"><b>Definition:</b> spatial_pool.h:49</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1TypeCheckPass_html"><div class="ttname"><a href="structmshadow_1_1expr_1_1TypeCheckPass.html">mshadow::expr::TypeCheckPass</a></div><div class="ttdoc">used to help static type check</div><div class="ttdef"><b>Definition:</b> expr_engine-inl.h:330</div></div>
<div class="ttc" id="a3rdparty_2mshadow_2mshadow_2base_8h_html_af205b8ab4d8733133d590df7d2639d69"><div class="ttname"><a href="3rdparty_2mshadow_2mshadow_2base_8h.html#af205b8ab4d8733133d590df7d2639d69">MSHADOW_XINLINE</a></div><div class="ttdeci">#define MSHADOW_XINLINE</div><div class="ttdef"><b>Definition:</b> base.h:228</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1PoolingExp_html_a87a2f8dea4300ff77a98a83572ca23fb"><div class="ttname"><a href="structmshadow_1_1expr_1_1PoolingExp.html#a87a2f8dea4300ff77a98a83572ca23fb">mshadow::expr::PoolingExp::ksize_y_</a></div><div class="ttdeci">index_t ksize_y_</div><div class="ttdoc">kernel size in height</div><div class="ttdef"><b>Definition:</b> spatial_pool.h:45</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1ShapeCheck_html_af44e6a3b97cf3b245bc1b7ad4cacb306"><div class="ttname"><a href="structmshadow_1_1expr_1_1ShapeCheck.html#af44e6a3b97cf3b245bc1b7ad4cacb306">mshadow::expr::ShapeCheck::Check</a></div><div class="ttdeci">static Shape&lt; dim &gt; Check(const E &amp;t)</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1PoolingExp_html_ab95e8c1880665da294f6e69ac2dc708b"><div class="ttname"><a href="structmshadow_1_1expr_1_1PoolingExp.html#ab95e8c1880665da294f6e69ac2dc708b">mshadow::expr::PoolingExp::PoolingExp</a></div><div class="ttdeci">PoolingExp(const SrcExp &amp;src, index_t ksize_y, index_t ksize_x, index_t kstride_y, index_t kstride_x)</div><div class="ttdoc">constructor</div><div class="ttdef"><b>Definition:</b> spatial_pool.h:57</div></div>
<div class="ttc" id="anamespacemshadow_1_1expr_html_aefd008a0bf012dc8fb99d9bbcca7a078"><div class="ttname"><a href="namespacemshadow_1_1expr.html#aefd008a0bf012dc8fb99d9bbcca7a078">mshadow::expr::MakePlan</a></div><div class="ttdeci">Plan&lt; BinaryMapExp&lt; OP, TA, TB, DType, etype &gt;, DType &gt; MakePlan(const BinaryMapExp&lt; OP, TA, TB, DType, etype &gt; &amp;e)</div><div class="ttdef"><b>Definition:</b> expr_engine-inl.h:239</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1MakeTensorExp_html_a2a2f9b6b828035ea38bfb8620db42a82"><div class="ttname"><a href="structmshadow_1_1expr_1_1MakeTensorExp.html#a2a2f9b6b828035ea38bfb8620db42a82">mshadow::expr::MakeTensorExp&lt; PoolingExp&lt; Reducer, SrcExp, DType, srcdim &gt;, SrcExp, srcdim, DType &gt;::shape_</a></div><div class="ttdeci">Shape&lt; dim &gt; shape_</div><div class="ttdoc">the shape of this expression</div><div class="ttdef"><b>Definition:</b> expr_engine-inl.h:47</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1PoolingExp_html_a95490e3fa6c9cc2d876f46101813f317"><div class="ttname"><a href="structmshadow_1_1expr_1_1PoolingExp.html#a95490e3fa6c9cc2d876f46101813f317">mshadow::expr::PoolingExp::src_height_</a></div><div class="ttdeci">index_t src_height_</div><div class="ttdoc">source height shape[1]</div><div class="ttdef"><b>Definition:</b> spatial_pool.h:53</div></div>
<div class="ttc" id="anamespacemshadow_html_adcbc2e1131386fccb1474b0bdf045926"><div class="ttname"><a href="namespacemshadow.html#adcbc2e1131386fccb1474b0bdf045926">mshadow::index_t</a></div><div class="ttdeci">int32_t index_t</div><div class="ttdoc">type that will be used for index</div><div class="ttdef"><b>Definition:</b> base.h:328</div></div>
<div class="ttc" id="aclassmshadow_1_1expr_1_1Plan_html"><div class="ttname"><a href="classmshadow_1_1expr_1_1Plan.html">mshadow::expr::Plan</a></div><div class="ttdef"><b>Definition:</b> expr_engine-inl.h:58</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1PoolingExp_html_a15c8573a6a56f4577a1bb06613ca9629"><div class="ttname"><a href="structmshadow_1_1expr_1_1PoolingExp.html#a15c8573a6a56f4577a1bb06613ca9629">mshadow::expr::PoolingExp::src_</a></div><div class="ttdeci">const SrcExp &amp; src_</div><div class="ttdoc">source operand</div><div class="ttdef"><b>Definition:</b> spatial_pool.h:43</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1Exp_html"><div class="ttname"><a href="structmshadow_1_1expr_1_1Exp.html">mshadow::expr::Exp</a></div><div class="ttdoc">defines how expression exp can be evaluated and stored into dst</div><div class="ttdef"><b>Definition:</b> expression.h:79</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1PoolingExp_html_aab57ef1700fe88f13ce906ef5757e55a"><div class="ttname"><a href="structmshadow_1_1expr_1_1PoolingExp.html#aab57ef1700fe88f13ce906ef5757e55a">mshadow::expr::PoolingExp::src_width_</a></div><div class="ttdeci">index_t src_width_</div><div class="ttdoc">source width shape[0]</div><div class="ttdef"><b>Definition:</b> spatial_pool.h:55</div></div>
<div class="ttc" id="anamespacemshadow_1_1expr_html_a9c0904ddf79b3f0df6d1b7747c71d921"><div class="ttname"><a href="namespacemshadow_1_1expr.html#a9c0904ddf79b3f0df6d1b7747c71d921">mshadow::expr::pool</a></div><div class="ttdeci">PoolingExp&lt; Reducer, SrcExp, DType, ExpInfo&lt; SrcExp &gt;::kDim &gt; pool(const Exp&lt; SrcExp, DType, etype &gt; &amp;src, index_t ksize_y, index_t ksize_x, index_t kstride_y, index_t kstride_x)</div><div class="ttdoc">pooling subregion results together</div><div class="ttdef"><b>Definition:</b> spatial_pool.h:100</div></div>
<div class="ttc" id="anamespacemshadow_html"><div class="ttname"><a href="namespacemshadow.html">mshadow</a></div><div class="ttdoc">overloaded + operator between half_t and bf16_t</div><div class="ttdef"><b>Definition:</b> base.h:319</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1MakeTensorExp_html"><div class="ttname"><a href="structmshadow_1_1expr_1_1MakeTensorExp.html">mshadow::expr::MakeTensorExp</a></div><div class="ttdoc">a general class that allows extension that makes tensors of some shape</div><div class="ttdef"><b>Definition:</b> expr_engine-inl.h:43</div></div>
<div class="ttc" id="anamespacestd_html"><div class="ttname"><a href="namespacestd.html">std</a></div><div class="ttdef"><b>Definition:</b> optional.h:251</div></div>
<div class="ttc" id="astructmshadow_1_1Shape_html"><div class="ttname"><a href="structmshadow_1_1Shape.html">mshadow::Shape&lt; srcdim &gt;</a></div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1PoolingExp_html_a6d9539a126f13e28774e409f4d6c69fe"><div class="ttname"><a href="structmshadow_1_1expr_1_1PoolingExp.html#a6d9539a126f13e28774e409f4d6c69fe">mshadow::expr::PoolingExp::kstride_x_</a></div><div class="ttdeci">index_t kstride_x_</div><div class="ttdoc">kernel stride in x directory</div><div class="ttdef"><b>Definition:</b> spatial_pool.h:51</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1Plan_3_01PoolingExp_3_01Reducer_00_01SrcExp_00_01DType_00_01srcdim_01_4_00_01DType_01_4_html_a8c667911a28c5a88b6046bfb245d1820"><div class="ttname"><a href="structmshadow_1_1expr_1_1Plan_3_01PoolingExp_3_01Reducer_00_01SrcExp_00_01DType_00_01srcdim_01_4_00_01DType_01_4.html#a8c667911a28c5a88b6046bfb245d1820">mshadow::expr::Plan&lt; PoolingExp&lt; Reducer, SrcExp, DType, srcdim &gt;, DType &gt;::Plan</a></div><div class="ttdeci">Plan(const PoolingExp&lt; Reducer, SrcExp, DType, srcdim &gt; &amp;e)</div><div class="ttdef"><b>Definition:</b> spatial_pool.h:137</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1PoolingExp_html_a31e19cfcb412409f1c352f013a88a101"><div class="ttname"><a href="structmshadow_1_1expr_1_1PoolingExp.html#a31e19cfcb412409f1c352f013a88a101">mshadow::expr::PoolingExp::ksize_x_</a></div><div class="ttdeci">index_t ksize_x_</div><div class="ttdoc">kernel size in width</div><div class="ttdef"><b>Definition:</b> spatial_pool.h:47</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1Plan_3_01PoolingExp_3_01Reducer_00_01SrcExp_00_01DType_00_01srcdim_01_4_00_01DType_01_4_html_a7de70a6413d79b6da2272c31231191d8"><div class="ttname"><a href="structmshadow_1_1expr_1_1Plan_3_01PoolingExp_3_01Reducer_00_01SrcExp_00_01DType_00_01srcdim_01_4_00_01DType_01_4.html#a7de70a6413d79b6da2272c31231191d8">mshadow::expr::Plan&lt; PoolingExp&lt; Reducer, SrcExp, DType, srcdim &gt;, DType &gt;::Eval</a></div><div class="ttdeci">MSHADOW_XINLINE DType Eval(index_t i, index_t j) const</div><div class="ttdef"><b>Definition:</b> spatial_pool.h:143</div></div>
<div class="ttc" id="astructmshadow_1_1expr_1_1PoolingExp_html_a46902e1b64dfea8aaa9382cbc86ae216"><div class="ttname"><a href="structmshadow_1_1expr_1_1PoolingExp.html#a46902e1b64dfea8aaa9382cbc86ae216">mshadow::expr::PoolingExp::PoolingExp</a></div><div class="ttdeci">PoolingExp(const SrcExp &amp;src, Shape&lt; 2 &gt; pshape, index_t ksize_y, index_t ksize_x, index_t kstride_y, index_t kstride_x)</div><div class="ttdoc">constructor, specify shape</div><div class="ttdef"><b>Definition:</b> spatial_pool.h:71</div></div>
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