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<div class="title">QAsymmU8QuantizationScheme Struct Reference</div> </div>
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<p><code>#include <<a class="el" href="_network_quantization_scheme_8hpp_source.xhtml">NetworkQuantizationScheme.hpp</a>></code></p>
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Inheritance diagram for QAsymmU8QuantizationScheme:</div>
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Public Member Functions</h2></td></tr>
<tr class="memitem:a9fb07d8d7554a1502e732b8afa92040a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespacearmnn.xhtml#a9b8e5a95f8c061bbbcdb036915dcb61a">OffsetScalePair</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structarmnn_1_1_q_asymm_u8_quantization_scheme.xhtml#a9fb07d8d7554a1502e732b8afa92040a">ComputeScheme</a> (double min, double max) const override</td></tr>
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<tr class="memitem:a1046eb36ff708a1b84f9a6bf0103fbc7"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structarmnn_1_1_q_asymm_u8_quantization_scheme.xhtml#a1046eb36ff708a1b84f9a6bf0103fbc7">NumBits</a> () const override</td></tr>
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<tr class="memitem:a57d67416d97cb7138e43656b43feb797"><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespacearmnn.xhtml#ad8ed01ff3ff33333d8e19db4d2818bb6">DataType</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structarmnn_1_1_q_asymm_u8_quantization_scheme.xhtml#a57d67416d97cb7138e43656b43feb797">GetDataType</a> () const override</td></tr>
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<tr class="inherit_header pub_methods_structarmnn_1_1_i_quantization_scheme"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_structarmnn_1_1_i_quantization_scheme')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="structarmnn_1_1_i_quantization_scheme.xhtml">IQuantizationScheme</a></td></tr>
<tr class="memitem:ac7ce71800ca0ebb1222958717a834c9a inherit pub_methods_structarmnn_1_1_i_quantization_scheme"><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="structarmnn_1_1_i_quantization_scheme.xhtml#ac7ce71800ca0ebb1222958717a834c9a">~IQuantizationScheme</a> ()</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<p class="definition">Definition at line <a class="el" href="_network_quantization_scheme_8hpp_source.xhtml#l00029">29</a> of file <a class="el" href="_network_quantization_scheme_8hpp_source.xhtml">NetworkQuantizationScheme.hpp</a>.</p>
</div><h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a9fb07d8d7554a1502e732b8afa92040a">◆ </a></span>ComputeScheme()</h2>
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<td class="memname"><a class="el" href="namespacearmnn.xhtml#a9b8e5a95f8c061bbbcdb036915dcb61a">OffsetScalePair</a> ComputeScheme </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"><em>min</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">double </td>
<td class="paramname"><em>max</em> </td>
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<td></td>
<td>)</td>
<td></td><td> const</td>
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<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">override</span><span class="mlabel">virtual</span></span> </td>
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<p>Implements <a class="el" href="structarmnn_1_1_i_quantization_scheme.xhtml#a6a5561395e9693f02258b49dfcc009b4">IQuantizationScheme</a>.</p>
<p class="definition">Definition at line <a class="el" href="_network_quantization_scheme_8hpp_source.xhtml#l00031">31</a> of file <a class="el" href="_network_quantization_scheme_8hpp_source.xhtml">NetworkQuantizationScheme.hpp</a>.</p>
<p class="reference">References <a class="el" href="structarmnn_1_1_i_quantization_scheme.xhtml#a7ebe7ca1c6100440fcc130217f43561b">IQuantizationScheme::NumBits()</a>.</p>
<p class="reference">Referenced by <a class="el" href="_network_quantizer_utils_8hpp_source.xhtml#l00023">armnn::QuantizeConstant()</a>.</p>
<div class="fragment"><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  {</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keywordflow">if</span> (min > max)</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  {</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordflow">throw</span> InvalidArgumentException(<span class="stringliteral">"min > max will result in invalid quantization."</span>);</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  }</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordtype">double</span> highest = (1 << <a class="code" href="structarmnn_1_1_q_asymm_u8_quantization_scheme.xhtml#a1046eb36ff708a1b84f9a6bf0103fbc7">NumBits</a>()) - 1;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  min = std::min(0.0, min); <span class="comment">// min <= 0.0</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  max = std::max(0.0, max); <span class="comment">// max >= 0.0</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// To avoid dividing by zero when quantizing a zero filled tensor</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">if</span> (min == 0.0 && max == 0.0)</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  {</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  max = 1.0;</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  }</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="comment">// Assumes quantization range [0-highest]</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordtype">double</span> scale = (max-min) / highest;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">double</span> offset = -min / scale;</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// Clamp offset [0-highest]</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  offset = std::max(0.0, std::min(highest, offset));</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> std::make_pair(static_cast<float>(scale), static_cast<int>(std::round(offset)));</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  }</div><div class="ttc" id="structarmnn_1_1_q_asymm_u8_quantization_scheme_xhtml_a1046eb36ff708a1b84f9a6bf0103fbc7"><div class="ttname"><a href="structarmnn_1_1_q_asymm_u8_quantization_scheme.xhtml#a1046eb36ff708a1b84f9a6bf0103fbc7">armnn::QAsymmU8QuantizationScheme::NumBits</a></div><div class="ttdeci">int NumBits() const override</div><div class="ttdef"><b>Definition:</b> <a href="_network_quantization_scheme_8hpp_source.xhtml#l00059">NetworkQuantizationScheme.hpp:59</a></div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#a57d67416d97cb7138e43656b43feb797">◆ </a></span>GetDataType()</h2>
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<td class="memname"><a class="el" href="namespacearmnn.xhtml#ad8ed01ff3ff33333d8e19db4d2818bb6">DataType</a> GetDataType </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">override</span><span class="mlabel">virtual</span></span> </td>
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<p>Implements <a class="el" href="structarmnn_1_1_i_quantization_scheme.xhtml#ad23181f9f8fcc85758f62c49fc7ca23f">IQuantizationScheme</a>.</p>
<p class="definition">Definition at line <a class="el" href="_network_quantization_scheme_8hpp_source.xhtml#l00061">61</a> of file <a class="el" href="_network_quantization_scheme_8hpp_source.xhtml">NetworkQuantizationScheme.hpp</a>.</p>
<p class="reference">References <a class="el" href="namespacearmnn.xhtml#ad8ed01ff3ff33333d8e19db4d2818bb6a0a3f57c876f5a230244c38e1453a8a6e">armnn::QAsymmU8</a>.</p>
<div class="fragment"><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> { <span class="keywordflow">return</span> <a class="code" href="namespacearmnn.xhtml#ad8ed01ff3ff33333d8e19db4d2818bb6a0a3f57c876f5a230244c38e1453a8a6e">DataType::QAsymmU8</a>; }</div><div class="ttc" id="namespacearmnn_xhtml_ad8ed01ff3ff33333d8e19db4d2818bb6a0a3f57c876f5a230244c38e1453a8a6e"><div class="ttname"><a href="namespacearmnn.xhtml#ad8ed01ff3ff33333d8e19db4d2818bb6a0a3f57c876f5a230244c38e1453a8a6e">armnn::DataType::QAsymmU8</a></div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#a1046eb36ff708a1b84f9a6bf0103fbc7">◆ </a></span>NumBits()</h2>
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<td class="memname">int NumBits </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">override</span><span class="mlabel">virtual</span></span> </td>
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<p>Implements <a class="el" href="structarmnn_1_1_i_quantization_scheme.xhtml#a7ebe7ca1c6100440fcc130217f43561b">IQuantizationScheme</a>.</p>
<p class="definition">Definition at line <a class="el" href="_network_quantization_scheme_8hpp_source.xhtml#l00059">59</a> of file <a class="el" href="_network_quantization_scheme_8hpp_source.xhtml">NetworkQuantizationScheme.hpp</a>.</p>
<div class="fragment"><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> { <span class="keywordflow">return</span> 8; }</div></div><!-- fragment -->
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<hr/>The documentation for this struct was generated from the following file:<ul>
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