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 <p>Performs multiplication of an integer with a multiplier which is less than one, using quantized integer arithmetic which is consistent with AndroidNN's CPU executor.
  <a href="structarmnn_1_1_quantized_multiplier_smaller_than_one.xhtml#details">More...</a></p>

 <p><code>#include &lt;<a class="el" href="_conv_impl_8hpp_source.xhtml">ConvImpl.hpp</a>&gt;</code></p>
 <table class="memberdecls">
 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
 Public Member Functions</h2></td></tr>
 <tr class="memitem:a1ec4f749fbbdacbe2cc7e8895d5b65ed"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarmnn_1_1_quantized_multiplier_smaller_than_one.xhtml#a1ec4f749fbbdacbe2cc7e8895d5b65ed">QuantizedMultiplierSmallerThanOne</a> (float multiplier)</td></tr>
 <tr class="memdesc:a1ec4f749fbbdacbe2cc7e8895d5b65ed"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs a <a class="el" href="structarmnn_1_1_quantized_multiplier_smaller_than_one.xhtml" title="Performs multiplication of an integer with a multiplier which is less than one, using quantized integ...">QuantizedMultiplierSmallerThanOne</a> which will multiply by the given multiplier.  <a href="#a1ec4f749fbbdacbe2cc7e8895d5b65ed">More...</a><br /></td></tr>
 <tr class="separator:a1ec4f749fbbdacbe2cc7e8895d5b65ed"><td class="memSeparator" colspan="2">&#160;</td></tr>
 <tr class="memitem:ac04834893e568dfea4642ecb575faed8"><td class="memItemLeft" align="right" valign="top">int32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarmnn_1_1_quantized_multiplier_smaller_than_one.xhtml#ac04834893e568dfea4642ecb575faed8">operator*</a> (int32_t rhs) const</td></tr>
 <tr class="memdesc:ac04834893e568dfea4642ecb575faed8"><td class="mdescLeft">&#160;</td><td class="mdescRight">The implementation of this function is adapted from Android NN's MultiplyByQuantizedMultiplierSmallerThanOne().  <a href="#ac04834893e568dfea4642ecb575faed8">More...</a><br /></td></tr>
 <tr class="separator:ac04834893e568dfea4642ecb575faed8"><td class="memSeparator" colspan="2">&#160;</td></tr>
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 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
 <div class="textblock"><p>Performs multiplication of an integer with a multiplier which is less than one, using quantized integer arithmetic which is consistent with AndroidNN's CPU executor. </p>

 <p class="definition">Definition at line <a class="el" href="_conv_impl_8hpp_source.xhtml#l00029">29</a> of file <a class="el" href="_conv_impl_8hpp_source.xhtml">ConvImpl.hpp</a>.</p>
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 <h2 class="memtitle"><span class="permalink"><a href="#a1ec4f749fbbdacbe2cc7e8895d5b65ed">&#9670;&nbsp;</a></span>QuantizedMultiplierSmallerThanOne()</h2>

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 <p>Constructs a <a class="el" href="structarmnn_1_1_quantized_multiplier_smaller_than_one.xhtml" title="Performs multiplication of an integer with a multiplier which is less than one, using quantized integ...">QuantizedMultiplierSmallerThanOne</a> which will multiply by the given multiplier. </p>
 <p>This stores the appropriate integer quantities (derived from the given multiplier) for later use. The implementation of this function is adapted from Android NN's QuantizeMultiplierSmallerThanOne(). </p>

 <p class="definition">Definition at line <a class="el" href="_conv_impl_8cpp_source.xhtml#l00016">16</a> of file <a class="el" href="_conv_impl_8cpp_source.xhtml">ConvImpl.cpp</a>.</p>
 <div class="fragment"><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;{</div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;    BOOST_ASSERT(multiplier &gt;= 0.0f &amp;&amp; multiplier &lt; 1.0f);</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;    <span class="keywordflow">if</span> (multiplier == 0.0f)</div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;    {</div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;        m_Multiplier = 0;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;        m_RightShift = 0;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;    }</div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;    <span class="keywordflow">else</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;    {</div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> q = std::frexp(multiplier, &amp;m_RightShift);</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;        m_RightShift = -m_RightShift;</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;        int64_t qFixed = <span class="keyword">static_cast&lt;</span>int64_t<span class="keyword">&gt;</span>(std::round(q * (1ll &lt;&lt; 31)));</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;        BOOST_ASSERT(qFixed &lt;= (1ll &lt;&lt; 31));</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;        <span class="keywordflow">if</span> (qFixed == (1ll &lt;&lt; 31))</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;        {</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;            qFixed /= 2;</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;            --m_RightShift;</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;        }</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;        BOOST_ASSERT(m_RightShift &gt;= 0);</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;        BOOST_ASSERT(qFixed &lt;= std::numeric_limits&lt;int32_t&gt;::max());</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;        m_Multiplier = <span class="keyword">static_cast&lt;</span>int32_t<span class="keyword">&gt;</span>(qFixed);</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    }</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;}</div></div><!-- fragment -->
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 <h2 class="memtitle"><span class="permalink"><a href="#ac04834893e568dfea4642ecb575faed8">&#9670;&nbsp;</a></span>operator*()</h2>

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           <td class="memname">int32_t operator* </td>
           <td>(</td>
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           <td class="paramname"><em>rhs</em></td><td>)</td>
           <td> const</td>
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 <p>The implementation of this function is adapted from Android NN's MultiplyByQuantizedMultiplierSmallerThanOne(). </p>

 <p class="definition">Definition at line <a class="el" href="_conv_impl_8cpp_source.xhtml#l00041">41</a> of file <a class="el" href="_conv_impl_8cpp_source.xhtml">ConvImpl.cpp</a>.</p>
 <div class="fragment"><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;{</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    int32_t x = SaturatingRoundingDoublingHighMul(rhs, m_Multiplier);</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    <span class="keywordflow">return</span> RoundingDivideByPOT(x, m_RightShift);</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;}</div></div><!-- fragment -->
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 <hr/>The documentation for this struct was generated from the following files:<ul>
 <li>src/backends/reference/workloads/<a class="el" href="_conv_impl_8hpp_source.xhtml">ConvImpl.hpp</a></li>
 <li>src/backends/reference/workloads/<a class="el" href="_conv_impl_8cpp_source.xhtml">ConvImpl.cpp</a></li>
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	<div class="title">QuantizedMultiplierSmallerThanOne Struct Reference</div> </div>
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	<p>Performs multiplication of an integer with a multiplier which is less than one, using quantized integer arithmetic which is consistent with AndroidNN's CPU executor.
	<a href="structarmnn_1_1_quantized_multiplier_smaller_than_one.xhtml#details">More...</a></p>

	<p><code>#include <<a class="el" href="_conv_impl_8hpp_source.xhtml">ConvImpl.hpp</a>></code></p>
	<table class="memberdecls">
	<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
	Public Member Functions</h2></td></tr>
	<tr class="memitem:a1ec4f749fbbdacbe2cc7e8895d5b65ed"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structarmnn_1_1_quantized_multiplier_smaller_than_one.xhtml#a1ec4f749fbbdacbe2cc7e8895d5b65ed">QuantizedMultiplierSmallerThanOne</a> (float multiplier)</td></tr>
	<tr class="memdesc:a1ec4f749fbbdacbe2cc7e8895d5b65ed"><td class="mdescLeft"> </td><td class="mdescRight">Constructs a <a class="el" href="structarmnn_1_1_quantized_multiplier_smaller_than_one.xhtml" title="Performs multiplication of an integer with a multiplier which is less than one, using quantized integ...">QuantizedMultiplierSmallerThanOne</a> which will multiply by the given multiplier. <a href="#a1ec4f749fbbdacbe2cc7e8895d5b65ed">More...</a><br /></td></tr>
	<tr class="separator:a1ec4f749fbbdacbe2cc7e8895d5b65ed"><td class="memSeparator" colspan="2"> </td></tr>
	<tr class="memitem:ac04834893e568dfea4642ecb575faed8"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarmnn_1_1_quantized_multiplier_smaller_than_one.xhtml#ac04834893e568dfea4642ecb575faed8">operator*</a> (int32_t rhs) const</td></tr>
	<tr class="memdesc:ac04834893e568dfea4642ecb575faed8"><td class="mdescLeft"> </td><td class="mdescRight">The implementation of this function is adapted from Android NN's MultiplyByQuantizedMultiplierSmallerThanOne(). <a href="#ac04834893e568dfea4642ecb575faed8">More...</a><br /></td></tr>
	<tr class="separator:ac04834893e568dfea4642ecb575faed8"><td class="memSeparator" colspan="2"> </td></tr>
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	<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
	<div class="textblock"><p>Performs multiplication of an integer with a multiplier which is less than one, using quantized integer arithmetic which is consistent with AndroidNN's CPU executor. </p>

	<p class="definition">Definition at line <a class="el" href="_conv_impl_8hpp_source.xhtml#l00029">29</a> of file <a class="el" href="_conv_impl_8hpp_source.xhtml">ConvImpl.hpp</a>.</p>
	</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
	<a id="a1ec4f749fbbdacbe2cc7e8895d5b65ed"></a>
	<h2 class="memtitle"><span class="permalink"><a href="#a1ec4f749fbbdacbe2cc7e8895d5b65ed">◆ </a></span>QuantizedMultiplierSmallerThanOne()</h2>

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	<td>(</td>
	<td class="paramtype">float </td>
	<td class="paramname"><em>multiplier</em></td><td>)</td>
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	<p>Constructs a <a class="el" href="structarmnn_1_1_quantized_multiplier_smaller_than_one.xhtml" title="Performs multiplication of an integer with a multiplier which is less than one, using quantized integ...">QuantizedMultiplierSmallerThanOne</a> which will multiply by the given multiplier. </p>
	<p>This stores the appropriate integer quantities (derived from the given multiplier) for later use. The implementation of this function is adapted from Android NN's QuantizeMultiplierSmallerThanOne(). </p>

	<p class="definition">Definition at line <a class="el" href="_conv_impl_8cpp_source.xhtml#l00016">16</a> of file <a class="el" href="_conv_impl_8cpp_source.xhtml">ConvImpl.cpp</a>.</p>
	<div class="fragment"><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> {</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  BOOST_ASSERT(multiplier >= 0.0f && multiplier < 1.0f);</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="keywordflow">if</span> (multiplier == 0.0f)</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  {</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  m_Multiplier = 0;</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  m_RightShift = 0;</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  }</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  {</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> q = std::frexp(multiplier, &m_RightShift);</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  m_RightShift = -m_RightShift;</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  int64_t qFixed = <span class="keyword">static_cast<</span>int64_t<span class="keyword">></span>(std::round(q * (1ll << 31)));</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  BOOST_ASSERT(qFixed <= (1ll << 31));</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keywordflow">if</span> (qFixed == (1ll << 31))</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  {</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  qFixed /= 2;</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  --m_RightShift;</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>  BOOST_ASSERT(m_RightShift >= 0);</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  BOOST_ASSERT(qFixed <= std::numeric_limits<int32_t>::max());</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  m_Multiplier = <span class="keyword">static_cast<</span>int32_t<span class="keyword">></span>(qFixed);</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  }</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> }</div></div><!-- fragment -->
	</div>
	</div>
	<h2 class="groupheader">Member Function Documentation</h2>
	<a id="ac04834893e568dfea4642ecb575faed8"></a>
	<h2 class="memtitle"><span class="permalink"><a href="#ac04834893e568dfea4642ecb575faed8">◆ </a></span>operator*()</h2>

	<div class="memitem">
	<div class="memproto">
	<table class="memname">
	<tr>
	<td class="memname">int32_t operator* </td>
	<td>(</td>
	<td class="paramtype">int32_t </td>
	<td class="paramname"><em>rhs</em></td><td>)</td>
	<td> const</td>
	</tr>
	</table>
	</div><div class="memdoc">

	<p>The implementation of this function is adapted from Android NN's MultiplyByQuantizedMultiplierSmallerThanOne(). </p>

	<p class="definition">Definition at line <a class="el" href="_conv_impl_8cpp_source.xhtml#l00041">41</a> of file <a class="el" href="_conv_impl_8cpp_source.xhtml">ConvImpl.cpp</a>.</p>
	<div class="fragment"><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>  int32_t x = SaturatingRoundingDoublingHighMul(rhs, m_Multiplier);</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">return</span> RoundingDivideByPOT(x, m_RightShift);</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> }</div></div><!-- fragment -->
	</div>
	</div>
	<hr/>The documentation for this struct was generated from the following files:<ul>
	<li>src/backends/reference/workloads/<a class="el" href="_conv_impl_8hpp_source.xhtml">ConvImpl.hpp</a></li>
	<li>src/backends/reference/workloads/<a class="el" href="_conv_impl_8cpp_source.xhtml">ConvImpl.cpp</a></li>
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