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<div class="title">reducer-inl.h</div> </div>
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<a href="reducer-inl_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>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> * or more contributor license agreements. See the NOTICE file</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * distributed with this work for additional information</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * &quot;License&quot;); you may not use this file except in compliance</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * with the License. You may obtain a copy of the License at</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> *</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> * specific language governing permissions and limitations</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"> * under the License.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#ifndef MXNET_COMMON_CUDA_RTC_REDUCER_INL_H_</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#define MXNET_COMMON_CUDA_RTC_REDUCER_INL_H_</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#if MXNET_USE_CUDA</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacemxnet.html">mxnet</a> {</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="keyword">namespace </span>common {</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="keyword">namespace </span>cuda {</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="keyword">namespace </span>rtc {</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; </div>
<div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="namespacemxnet_1_1common_1_1cuda_1_1rtc.html#ac5a777fbfe06df6918e4fca2f66c30e6"> 30</a></span>&#160;<span class="keyword">const</span> <span class="keywordtype">char</span> <a class="code" href="namespacemxnet_1_1common_1_1cuda_1_1rtc.html#ac5a777fbfe06df6918e4fca2f66c30e6">reducer</a>[] = R<span class="stringliteral">&quot;code(</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="stringliteral">namespace red {</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="stringliteral">struct sum {</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="stringliteral"> template&lt;typename DType, typename DType2&gt;</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile DType&amp; dst, volatile DType2 src) {</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="stringliteral"> dst = op::add(dst, src);</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="stringliteral"> template&lt;typename DType, typename DType2&gt;</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile DType&amp; dst, volatile DType2 src,</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="stringliteral"> volatile DType&amp; residual) {</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="stringliteral"> DType y = op::sub(src, residual);</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;<span class="stringliteral"> DType t = dst + y;</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;<span class="stringliteral"> if (util::isinf(t)) {</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;<span class="stringliteral"> residual = 0;</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;<span class="stringliteral"> } else {</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;<span class="stringliteral"> residual = (t - dst) - y;</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="stringliteral"> dst = t;</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; src_val) {</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="stringliteral"> Reduce(dst_val, src_val);</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; dst_residual,</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="stringliteral"> volatile DType&amp; src_val, volatile DType&amp; src_residual) {</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="stringliteral"> DType t1 = dst_val + src_val;</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="stringliteral"> if (util::isinf(t1)) {</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="stringliteral"> dst_val = t1;</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="stringliteral"> dst_residual = 0;</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="stringliteral"> } else {</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="stringliteral"> DType e = t1 - dst_val;</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;<span class="stringliteral"> DType t2 = ((src_val - e) + (dst_val - (t1 - e))) + dst_residual + src_residual;</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;<span class="stringliteral"> dst_val = t1 + t2;</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;<span class="stringliteral"> dst_residual = t2 - (dst_val - t1);</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst) {}</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst, volatile DType&amp; none) {}</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv) {</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;<span class="stringliteral"> initv = 0;</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv, DType &amp;residual) {</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;<span class="stringliteral"> SetInitValue(initv);</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="stringliteral"> residual = 0;</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;<span class="stringliteral">};</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="stringliteral">struct product {</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="stringliteral"> template&lt;typename DType, typename DType2&gt;</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile DType&amp; dst, volatile DType2 src) {</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="stringliteral"> dst = op::mul(dst, src);</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<span class="stringliteral"> template&lt;typename DType, typename DType2&gt;</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile DType&amp; dst, volatile DType2 src,</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="stringliteral"> volatile DType&amp; none) {</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="stringliteral"> Reduce(dst, src);</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; src_val) {</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;<span class="stringliteral"> Reduce(dst_val, src_val);</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; dst_residual,</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;<span class="stringliteral"> volatile DType&amp; src_val, volatile DType&amp; src_residual) {</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;<span class="stringliteral"> Reduce(dst_val, src_val);</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst) {}</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst, volatile DType&amp; none) {}</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv) {</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;<span class="stringliteral"> initv = 1;</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv, DType &amp;none) {</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;<span class="stringliteral"> SetInitValue(initv);</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;<span class="stringliteral">};</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;<span class="stringliteral">struct nansum {</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;<span class="stringliteral"> template&lt;typename DType, typename DType2&gt;</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile DType&amp; dst, volatile DType2 src) {</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="stringliteral"> if (util::isnan(src)) return;</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;<span class="stringliteral"> dst = op::add(dst, src);</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile DType&amp; dst, volatile DType src,</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="stringliteral"> volatile DType&amp; residual) {</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="stringliteral"> if (util::isnan(src)) return;</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="stringliteral"> DType y = src - residual;</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="stringliteral"> DType t = dst + y;</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;<span class="stringliteral"> residual = (t - dst) - y;</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="stringliteral"> dst = t;</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; src_val) {</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;<span class="stringliteral"> Reduce(dst_val, src_val);</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; dst_residual,</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="stringliteral"> volatile DType&amp; src_val, volatile DType&amp; src_residual) {</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="stringliteral"> DType t1 = dst_val + src_val;</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;<span class="stringliteral"> DType e = t1 - src_val;</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;<span class="stringliteral"> DType t2 = ((src_val - e) + (dst_val - (t1 - e))) + dst_residual + src_residual;</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;<span class="stringliteral"> dst_val = t1 + t2;</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;<span class="stringliteral"> dst_residual = t2 - (dst_val - t1);</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst) {}</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst, volatile DType&amp; none) {}</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp; initv) {</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;<span class="stringliteral"> initv = 0;</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv, DType &amp;residual) {</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160;<span class="stringliteral"> SetInitValue(initv);</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160;<span class="stringliteral"> residual = 0;</span></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160;<span class="stringliteral">};</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160;<span class="stringliteral">struct nanprod {</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160;<span class="stringliteral"> template&lt;typename DType, typename DType2&gt;</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile DType&amp; dst, volatile DType2 src) {</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160;<span class="stringliteral"> if (util::isnan(src)) return;</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160;<span class="stringliteral"> dst = op::mul(dst, src);</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile DType&amp; dst, volatile DType src,</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160;<span class="stringliteral"> volatile DType&amp; none) {</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160;<span class="stringliteral"> Reduce(dst, src);</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; src_val) {</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160;<span class="stringliteral"> Reduce(dst_val, src_val);</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; dst_residual,</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160;<span class="stringliteral"> volatile DType&amp; src_val, volatile DType&amp; src_residual) {</span></div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160;<span class="stringliteral"> Reduce(dst_val, src_val);</span></div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst) {}</span></div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst, volatile DType&amp; none) {}</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp; initv) {</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160;<span class="stringliteral"> initv = 1;</span></div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv, DType &amp;none) {</span></div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160;<span class="stringliteral"> SetInitValue(initv);</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160;<span class="stringliteral">};</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160;<span class="stringliteral">struct nrm2 {</span></div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160;<span class="stringliteral"> template&lt;typename AType, typename DType&gt;</span></div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile AType&amp; sum_of_squares, volatile DType src) {</span></div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160;<span class="stringliteral"> sum_of_squares = op::add(sum_of_square, src * src);</span></div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160;<span class="stringliteral"> template&lt;typename AType, typename DType&gt;</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile AType&amp; sum_of_squares,</span></div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160;<span class="stringliteral"> volatile DType src, volatile DType&amp; scale) {</span></div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160;<span class="stringliteral"> if (src != 0) {</span></div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160;<span class="stringliteral"> DType abs = op::abs(src);</span></div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160;<span class="stringliteral"> if (scale &lt; abs) {</span></div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160;<span class="stringliteral"> sum_of_squares = 1 + sum_of_squares * (scale / abs) * (scale / abs);</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160;<span class="stringliteral"> scale = abs;</span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160;<span class="stringliteral"> } else {</span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160;<span class="stringliteral"> sum_of_squares = sum_of_squares + (abs / scale) * (abs / scale);</span></div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; src_val) {</span></div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160;<span class="stringliteral"> dst_val = op::add(dst_val, src_val);</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_ssq, volatile DType&amp; dst_scale,</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160;<span class="stringliteral"> volatile DType&amp; src_ssq, volatile DType&amp; src_scale) {</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160;<span class="stringliteral"> if (dst_scale != 0 &amp;&amp; dst_scale &gt;= src_scale) {</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160;<span class="stringliteral"> dst_ssq = dst_ssq + src_ssq * (src_scale / dst_scale) * (src_scale / dst_scale);</span></div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160;<span class="stringliteral"> } else if (src_scale != 0 &amp;&amp; dst_scale &lt; src_scale) {</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160;<span class="stringliteral"> dst_ssq = src_ssq + dst_ssq * (dst_scale / src_scale) * (dst_scale / src_scale);</span></div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160;<span class="stringliteral"> dst_scale = src_scale;</span></div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; sum_of_squares) {</span></div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160;<span class="stringliteral"> sum_of_squares = op::sqrt(sum_of_squares);</span></div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; sum_of_squares, volatile DType&amp; scale) {</span></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160;<span class="stringliteral"> sum_of_squares = scale * op::sqrt(sum_of_squares);</span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;sum_of_squares) {</span></div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160;<span class="stringliteral"> sum_of_squares = 0;</span></div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;sum_of_squares, DType &amp;scale) {</span></div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160;<span class="stringliteral"> SetInitValue(sum_of_squares);</span></div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160;<span class="stringliteral"> scale = 0;</span></div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160;<span class="stringliteral">};</span></div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160;<span class="stringliteral">struct nrmlp {</span></div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160;<span class="stringliteral"> double lp;</span></div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160;<span class="stringliteral"> /* \brief power for Lp norm */</span></div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160;<span class="stringliteral"> __device__ inline static double lp_power(volatile double src, volatile double p) {</span></div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160;<span class="stringliteral"> if (p != 0.0) {</span></div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160;<span class="stringliteral"> if (src == 0.0) {</span></div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160;<span class="stringliteral"> return src;</span></div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160;<span class="stringliteral"> } else {</span></div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160;<span class="stringliteral"> return op::power(src, p);</span></div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160;<span class="stringliteral"> } else { // 0-norm, sparsity</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160;<span class="stringliteral"> return static_cast&lt;double&gt;(src != 0);</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160;<span class="stringliteral"> template&lt;typename AType, typename DType&gt;</span></div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160;<span class="stringliteral"> __device__ inline void Reduce(volatile AType&amp; sum_of_powers, volatile DType src) {</span></div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160;<span class="stringliteral"> if (src != 0) {</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160;<span class="stringliteral"> sum_of_powers += AType(lp_power(static_cast&lt;double&gt;(src), lp));</span></div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160;<span class="stringliteral"> template&lt;typename AType, typename DType&gt;</span></div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160;<span class="stringliteral"> __device__ inline void Reduce(volatile AType&amp; sum_of_powers, volatile DType src,</span></div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160;<span class="stringliteral"> volatile DType&amp; scale) {</span></div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160;<span class="stringliteral"> if (src != 0) {</span></div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>&#160;<span class="stringliteral"> DType src_abs = op::abs(src);</span></div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>&#160;<span class="stringliteral"> if (scale &lt; src_abs) {</span></div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>&#160;<span class="stringliteral"> sum_of_powers = sum_of_powers * AType(lp_power(static_cast&lt;double&gt;(scale / src_abs), lp));</span></div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>&#160;<span class="stringliteral"> sum_of_powers = sum_of_powers + 1;</span></div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>&#160;<span class="stringliteral"> scale = src_abs;</span></div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>&#160;<span class="stringliteral"> } else {</span></div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160;<span class="stringliteral"> sum_of_powers = sum_of_powers + AType(lp_power(static_cast&lt;double&gt;(src_abs / scale), lp));</span></div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; src_val) {</span></div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>&#160;<span class="stringliteral"> dst_val = dst_val + src_val;</span></div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_ssq, volatile DType&amp; dst_scale,</span></div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>&#160;<span class="stringliteral"> volatile DType&amp; src_ssq, volatile DType&amp; src_scale) {</span></div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>&#160;<span class="stringliteral"> if (dst_scale != 0 &amp;&amp; dst_scale &gt;= src_scale) {</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>&#160;<span class="stringliteral"> dst_ssq = dst_ssq + src_ssq * DType(lp_power(static_cast&lt;double&gt;(src_scale / dst_scale), 2));</span></div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>&#160;<span class="stringliteral"> } else if (src_scale != 0 &amp;&amp; dst_scale &lt; src_scale) {</span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>&#160;<span class="stringliteral"> dst_ssq = src_ssq + dst_ssq * DType(lp_power(static_cast&lt;double&gt;(dst_scale / src_scale), 2));</span></div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>&#160;<span class="stringliteral"> dst_scale = src_scale;</span></div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>&#160;<span class="stringliteral"> __device__ inline void Finalize(volatile DType&amp; sum_of_powers) {</span></div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>&#160;<span class="stringliteral"> if (lp != 0.0) {</span></div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>&#160;<span class="stringliteral"> sum_of_powers = DType(lp_power(static_cast&lt;double&gt;(sum_of_powers), 1.0 / lp));</span></div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>&#160;<span class="stringliteral"> __device__ inline void Finalize(volatile DType&amp; sum_of_powers, volatile DType&amp; scale) {</span></div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>&#160;<span class="stringliteral"> if (lp != 0.0) {</span></div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>&#160;<span class="stringliteral"> sum_of_powers = scale * DType(lp_power(static_cast&lt;double&gt;(sum_of_powers), 1.0 / lp));</span></div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;sum_of_powers) {</span></div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>&#160;<span class="stringliteral"> sum_of_powers = 0;</span></div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;sum_of_powers, DType &amp;scale) {</span></div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>&#160;<span class="stringliteral"> SetInitValue(sum_of_powers);</span></div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>&#160;<span class="stringliteral"> scale = 0;</span></div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>&#160;<span class="stringliteral">};</span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>&#160;<span class="stringliteral">} // namespace red</span></div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>&#160;<span class="stringliteral">)code&quot;;</span></div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00399"></a><span class="lineno"><a class="line" href="namespacemxnet_1_1common_1_1cuda_1_1rtc.html#ac71ebdfa69467fc32f2e18e05410af21"> 399</a></span>&#160;<span class="stringliteral"></span><span class="keyword">const</span> <span class="keywordtype">char</span> <a class="code" href="namespacemxnet_1_1common_1_1cuda_1_1rtc.html#ac71ebdfa69467fc32f2e18e05410af21">logic_reducer</a>[] = R<span class="stringliteral">&quot;code(</span></div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>&#160;<span class="stringliteral">namespace red {</span></div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>&#160;<span class="stringliteral">struct maximum {</span></div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>&#160;<span class="stringliteral"> template&lt;typename DType, typename DType2&gt;</span></div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile DType&amp; dst, volatile DType2 src) { // NOLINT(*)</span></div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>&#160;<span class="stringliteral"> if (!util::isnan(dst)) {</span></div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>&#160;<span class="stringliteral"> if (!(dst &gt;= src)) dst = src;</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>&#160;<span class="stringliteral"> template&lt;typename DType, typename DType2&gt;</span></div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile DType&amp; dst, volatile DType2 src,</span></div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>&#160;<span class="stringliteral"> volatile DType&amp; none) {</span></div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>&#160;<span class="stringliteral"> Reduce(dst, src);</span></div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; src_val) {</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>&#160;<span class="stringliteral"> Reduce(dst_val, src_val);</span></div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; dst_residual,</span></div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>&#160;<span class="stringliteral"> volatile DType&amp; src_val, volatile DType&amp; src_residual) {</span></div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>&#160;<span class="stringliteral"> Reduce(dst_val, src_val);</span></div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst) {}</span></div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst, volatile DType&amp; none) {}</span></div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv) {</span></div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>&#160;<span class="stringliteral"> initv = limits::NegInfValue&lt;DType&gt;();</span></div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv, DType &amp;none) {</span></div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>&#160;<span class="stringliteral"> SetInitValue(initv);</span></div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>&#160;<span class="stringliteral">};</span></div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>&#160;<span class="stringliteral">struct minimum {</span></div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>&#160;<span class="stringliteral"> template&lt;typename DType, typename DType2&gt;</span></div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile DType&amp; dst, volatile DType2 src) {</span></div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>&#160;<span class="stringliteral"> if (!util::isnan(dst)) {</span></div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>&#160;<span class="stringliteral"> if (!(dst &lt;= src)) dst = src;</span></div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>&#160;<span class="stringliteral"> template&lt;typename DType, typename DType2&gt;</span></div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile DType&amp; dst, volatile DType2 src,</span></div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>&#160;<span class="stringliteral"> volatile DType&amp; none) {</span></div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>&#160;<span class="stringliteral"> Reduce(dst, src);</span></div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; src_val) {</span></div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>&#160;<span class="stringliteral"> Reduce(dst_val, src_val);</span></div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst_val, volatile DType&amp; dst_residual,</span></div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>&#160;<span class="stringliteral"> volatile DType&amp; src_val, volatile DType&amp; src_residual) {</span></div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>&#160;<span class="stringliteral"> Reduce(dst_val, src_val);</span></div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst) {}</span></div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst, volatile DType&amp; none) {}</span></div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv) {</span></div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>&#160;<span class="stringliteral"> initv = limits::PosInfValue&lt;DType&gt;();</span></div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv, DType &amp;none) {</span></div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>&#160;<span class="stringliteral"> SetInitValue(initv);</span></div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>&#160;<span class="stringliteral">};</span></div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>&#160;<span class="stringliteral">struct argmax {</span></div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>&#160;<span class="stringliteral"> template&lt;typename AType, typename DType&gt;</span></div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile AType&amp; dst, volatile DType src) {</span></div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>&#160;<span class="stringliteral"> if (dst.num &lt; src.num || (dst.num == src.num &amp;&amp; dst.idx &gt; src.idx)) {</span></div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>&#160;<span class="stringliteral"> dst.num = src.num;</span></div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>&#160;<span class="stringliteral"> dst.idx = src.idx;</span></div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>&#160;<span class="stringliteral"> template&lt;typename AType, typename DType&gt;</span></div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile AType&amp; dst, volatile DType src,</span></div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>&#160;<span class="stringliteral"> volatile DType&amp;) {</span></div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>&#160;<span class="stringliteral"> if (dst.num &lt; src.num || (dst.num == src.num &amp;&amp; dst.idx &gt; src.idx)) {</span></div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>&#160;<span class="stringliteral"> dst.num = src.num;</span></div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>&#160;<span class="stringliteral"> dst.idx = src.idx;</span></div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst, volatile DType&amp; src) {</span></div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>&#160;<span class="stringliteral"> if (dst.num &lt; src.num || (dst.num == src.num &amp;&amp; dst.idx &gt; src.idx)) {</span></div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>&#160;<span class="stringliteral"> dst.num = src.num;</span></div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>&#160;<span class="stringliteral"> dst.idx = src.idx;</span></div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst, volatile DType&amp;,</span></div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>&#160;<span class="stringliteral"> volatile DType&amp; src, volatile DType&amp;) {</span></div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>&#160;<span class="stringliteral"> if (dst.num &lt; src.num || (dst.num == src.num &amp;&amp; dst.idx &gt; src.idx)) {</span></div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>&#160;<span class="stringliteral"> dst.num = src.num;</span></div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>&#160;<span class="stringliteral"> dst.idx = src.idx;</span></div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst) {}</span></div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst, volatile DType&amp;) {}</span></div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv) {</span></div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>&#160;<span class="stringliteral"> initv.num = limits::NegInfValue&lt;decltype(initv.num)&gt;();</span></div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv, DType &amp;) {</span></div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>&#160;<span class="stringliteral"> initv.num = limits::NegInfValue&lt;decltype(initv.num)&gt;();</span></div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>&#160;<span class="stringliteral">};</span></div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>&#160;<span class="stringliteral">struct argmin {</span></div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>&#160;<span class="stringliteral"> template&lt;typename AType, typename DType&gt;</span></div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile AType&amp; dst, volatile DType src) {</span></div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>&#160;<span class="stringliteral"> if (dst.num &gt; src.num || (dst.num == src.num &amp;&amp; dst.idx &gt; src.idx)) {</span></div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>&#160;<span class="stringliteral"> dst.num = src.num;</span></div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>&#160;<span class="stringliteral"> dst.idx = src.idx;</span></div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>&#160;<span class="stringliteral"> template&lt;typename AType, typename DType&gt;</span></div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>&#160;<span class="stringliteral"> __device__ inline static void Reduce(volatile AType&amp; dst, volatile DType src,</span></div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>&#160;<span class="stringliteral"> volatile DType&amp; residual) {</span></div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>&#160;<span class="stringliteral"> if (dst.num &gt; src.num || (dst.num == src.num &amp;&amp; dst.idx &gt; src.idx)) {</span></div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>&#160;<span class="stringliteral"> dst.num = src.num;</span></div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>&#160;<span class="stringliteral"> dst.idx = src.idx;</span></div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst, volatile DType&amp; src) {</span></div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>&#160;<span class="stringliteral"> if (dst.num &gt; src.num || (dst.num == src.num &amp;&amp; dst.idx &gt; src.idx)) {</span></div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>&#160;<span class="stringliteral"> dst.num = src.num;</span></div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>&#160;<span class="stringliteral"> dst.idx = src.idx;</span></div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>&#160;<span class="stringliteral"> __device__ inline static void Merge(volatile DType&amp; dst, volatile DType&amp;,</span></div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>&#160;<span class="stringliteral"> volatile DType&amp; src, volatile DType&amp;) {</span></div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>&#160;<span class="stringliteral"> if (dst.num &gt; src.num || (dst.num == src.num &amp;&amp; dst.idx &gt; src.idx)) {</span></div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>&#160;<span class="stringliteral"> dst.num = src.num;</span></div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>&#160;<span class="stringliteral"> dst.idx = src.idx;</span></div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst) {}</span></div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>&#160;<span class="stringliteral"> __device__ inline static void Finalize(volatile DType&amp; dst, volatile DType&amp; residual) {}</span></div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv) {</span></div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>&#160;<span class="stringliteral"> initv.num = limits::PosInfValue&lt;decltype(initv.num)&gt;();</span></div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>&#160;<span class="stringliteral"> template&lt;typename DType&gt;</span></div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>&#160;<span class="stringliteral"> __device__ inline static void SetInitValue(DType &amp;initv, DType &amp;residual) {</span></div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>&#160;<span class="stringliteral"> initv.num = limits::PosInfValue&lt;decltype(initv.num)&gt;();</span></div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>&#160;<span class="stringliteral"> }</span></div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>&#160;<span class="stringliteral">};</span></div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>&#160;<span class="stringliteral">} // namespace red</span></div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>&#160;<span class="stringliteral">)code&quot;;</span></div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>&#160;<span class="stringliteral">} </span><span class="comment">// namespace rtc</span></div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>&#160;} <span class="comment">// namespace cuda</span></div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>&#160;} <span class="comment">// namespace common</span></div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>&#160;} <span class="comment">// namespace mxnet</span></div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>&#160; </div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>&#160;<span class="preprocessor">#endif // MXNET_USE_CUDA</span></div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>&#160; </div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>&#160;<span class="preprocessor">#endif // MXNET_COMMON_CUDA_RTC_REDUCER_INL_H_</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="anamespacemxnet_html"><div class="ttname"><a href="namespacemxnet.html">mxnet</a></div><div class="ttdoc">namespace of mxnet</div><div class="ttdef"><b>Definition:</b> api_registry.h:33</div></div>
<div class="ttc" id="anamespacemxnet_1_1common_1_1cuda_1_1rtc_html_ac71ebdfa69467fc32f2e18e05410af21"><div class="ttname"><a href="namespacemxnet_1_1common_1_1cuda_1_1rtc.html#ac71ebdfa69467fc32f2e18e05410af21">mxnet::common::cuda::rtc::logic_reducer</a></div><div class="ttdeci">const char logic_reducer[]</div><div class="ttdef"><b>Definition:</b> reducer-inl.h:399</div></div>
<div class="ttc" id="anamespacemxnet_1_1common_1_1cuda_1_1rtc_html_ac5a777fbfe06df6918e4fca2f66c30e6"><div class="ttname"><a href="namespacemxnet_1_1common_1_1cuda_1_1rtc.html#ac5a777fbfe06df6918e4fca2f66c30e6">mxnet::common::cuda::rtc::reducer</a></div><div class="ttdeci">const char reducer[]</div><div class="ttdef"><b>Definition:</b> reducer-inl.h:30</div></div>
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