<p>In <a href="https://github.com/mlpack/mlpack/pull/757#discussion_r74194437">src/mlpack/methods/ann/layer/conv_layer.hpp</a>:</p>
<pre style='color:#555'>&gt; @@ -251,6 +269,26 @@ class ConvLayer
&gt;      return std::floor(size + p * 2 - k) / s + 1;
&gt;    }
&gt;  
&gt; +  template&lt;typename eT&gt;
&gt; +  void Pad(const arma::Mat&lt;eT&gt;&amp; input, size_t wPad, size_t hPad, arma::Mat&lt;eT&gt;&amp; output)
</pre>
<p>I guess we can use the Pad functions of network_utility to replace them</p>

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