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<div class="textblock"><code>#include &lt;<a class="el" href="_exceptions_8hpp_source.html">armnn/Exceptions.hpp</a>&gt;</code><br />
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Functions</h2></td></tr>
<tr class="memitem:a4abc0e36fdf181445157310836d44741"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="_tosa_rescale_operator_utils_8hpp.html#a4abc0e36fdf181445157310836d44741">CreateRescaleTosaOperator</a> (const std::string &amp;inputName, const std::string &amp;outputName, DType output_type, const std::vector&lt; int32_t &gt; &amp;shape, int32_t scale_multiplier, int32_t scale_shift, int32_t input_zp, int32_t output_zp, bool double_round, bool scale32, TosaSerializationOperator **op, TosaSerializationTensor **tensor)</td></tr>
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<tr class="memitem:abd0f69e59861d66f2a89fe797a2b1079"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="_tosa_rescale_operator_utils_8hpp.html#abd0f69e59861d66f2a89fe797a2b1079">CreateRescaleTosaOperator</a> (const std::string &amp;inputName, const std::string &amp;outputName, DType output_type, const std::vector&lt; int32_t &gt; &amp;shape, double scale, int32_t input_zp, int32_t output_zp, bool double_round, bool scale32, TosaSerializationOperator **op, TosaSerializationTensor **tensor)</td></tr>
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<tr class="memitem:af9d444ffce906683d38bff5c1f1e45f2"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="_tosa_rescale_operator_utils_8hpp.html#af9d444ffce906683d38bff5c1f1e45f2">CreateFromInt32RescaleTosaOperator</a> (const std::string &amp;inputName, const std::string &amp;outputName, DType output_type, const std::vector&lt; int32_t &gt; &amp;shape, double output_scale, int32_t output_zp, TosaSerializationOperator **op, TosaSerializationTensor **tensor)</td></tr>
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<h2 class="groupheader">Function Documentation</h2>
<a id="af9d444ffce906683d38bff5c1f1e45f2"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af9d444ffce906683d38bff5c1f1e45f2">&#9670;&nbsp;</a></span>CreateFromInt32RescaleTosaOperator()</h2>
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<td class="memname">void CreateFromInt32RescaleTosaOperator </td>
<td>(</td>
<td class="paramtype">const std::string &amp;&#160;</td>
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<td class="paramtype">int32_t&#160;</td>
<td class="paramname"><em>output_zp</em>, </td>
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<td class="paramtype">TosaSerializationOperator **&#160;</td>
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<td class="paramtype">TosaSerializationTensor **&#160;</td>
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<p class="definition">Definition at line <a class="el" href="_tosa_rescale_operator_utils_8hpp_source.html#l00119">119</a> of file <a class="el" href="_tosa_rescale_operator_utils_8hpp_source.html">TosaRescaleOperatorUtils.hpp</a>.</p>
<div class="fragment"><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;{</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; <a class="code" href="_tosa_rescale_operator_utils_8hpp.html#a4abc0e36fdf181445157310836d44741">CreateRescaleTosaOperator</a>(inputName, outputName, output_type, shape,</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; output_scale, 0, output_zp, <span class="keyword">true</span>, <span class="keyword">true</span>, op, tensor);</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;}</div>
</div><!-- fragment -->
<p class="reference">References <a class="el" href="_tosa_rescale_operator_utils_8hpp_source.html#l00010">CreateRescaleTosaOperator()</a>.</p>
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<a id="abd0f69e59861d66f2a89fe797a2b1079"></a>
<h2 class="memtitle"><span class="permalink"><a href="#abd0f69e59861d66f2a89fe797a2b1079">&#9670;&nbsp;</a></span>CreateRescaleTosaOperator() <span class="overload">[1/2]</span></h2>
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<td class="memname">void CreateRescaleTosaOperator </td>
<td>(</td>
<td class="paramtype">const std::string &amp;&#160;</td>
<td class="paramname"><em>inputName</em>, </td>
</tr>
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<td class="paramname"><em>scale</em>, </td>
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<td class="paramname"><em>input_zp</em>, </td>
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<td class="paramname"><em>double_round</em>, </td>
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<td class="paramtype">bool&#160;</td>
<td class="paramname"><em>scale32</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">TosaSerializationOperator **&#160;</td>
<td class="paramname"><em>op</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">TosaSerializationTensor **&#160;</td>
<td class="paramname"><em>tensor</em>&#160;</td>
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<td>)</td>
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<p class="definition">Definition at line <a class="el" href="_tosa_rescale_operator_utils_8hpp_source.html#l00055">55</a> of file <a class="el" href="_tosa_rescale_operator_utils_8hpp_source.html">TosaRescaleOperatorUtils.hpp</a>.</p>
<div class="fragment"><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;{</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="comment">// The code that follows is based on the behaviour specified in</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="comment">// https://www.mlplatform.org/tosa/tosa_spec.html#_precision_scaling</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keyword">auto</span> GetScaleParams = [](<span class="keywordtype">double</span> scale, <span class="keywordtype">double</span>&amp; m, int32_t&amp; n)</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; {</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; m = 0;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; n = 0;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <span class="keywordtype">double</span> lastErr = 1e06;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keyword">const</span> int32_t numExponents = 62;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keyword">const</span> <span class="keywordtype">double</span> start = 1.0;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keyword">const</span> <span class="keywordtype">double</span> end = 2.0;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="comment">// Slow iterative approach but running in Reference only</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keywordflow">for</span> (int32_t i = 0; i &lt; numExponents; ++i)</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; {</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="keywordtype">double</span> exp = 1.0 / (1 &lt;&lt; i);</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <span class="keywordtype">double</span> currentM = scale / exp; <span class="comment">// Find current m given value = currentM * exp</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="keywordflow">if</span> ((currentM &gt;= start) &amp;&amp; (currentM &lt; end))</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordtype">double</span> value = currentM * exp;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <span class="keywordtype">double</span> err = std::abs(scale - value);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordflow">if</span> (err &lt; lastErr)</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; {</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="comment">// Take the m, n that minimize the error</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; n = i;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; m = currentM;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; lastErr = err;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; }</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; }</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; }</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; };</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keyword">auto</span> GetMultiplierShiftByScale = [GetScaleParams](<span class="keywordtype">bool</span> scale32, <span class="keywordtype">double</span> scale, int32_t&amp; multiplier, int32_t&amp; shift)</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; {</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; <span class="keywordtype">double</span> m = 0;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; int32_t n = 0;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; GetScaleParams(scale, m, n);</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; </div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; multiplier = (scale32) ? (1 &lt;&lt; 30) * <span class="keyword">static_cast&lt;</span>int32_t<span class="keyword">&gt;</span>(m) : (1 &lt;&lt; 14) * <span class="keyword">static_cast&lt;</span>int32_t<span class="keyword">&gt;</span>(m);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; shift = (scale32) ? (30 + n) : (14 + n);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; };</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; int32_t multiplier;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; int32_t shift;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; GetMultiplierShiftByScale(scale32, scale, multiplier, shift);</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <a class="code" href="_tosa_rescale_operator_utils_8hpp.html#a4abc0e36fdf181445157310836d44741">CreateRescaleTosaOperator</a>(inputName, outputName, output_type, shape, multiplier, shift,</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; input_zp, output_zp, double_round, scale32, op, tensor);</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;}</div>
</div><!-- fragment -->
<p class="reference">References <a class="el" href="_tosa_rescale_operator_utils_8hpp_source.html#l00010">CreateRescaleTosaOperator()</a>.</p>
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<a id="a4abc0e36fdf181445157310836d44741"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4abc0e36fdf181445157310836d44741">&#9670;&nbsp;</a></span>CreateRescaleTosaOperator() <span class="overload">[2/2]</span></h2>
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<td class="memname">void CreateRescaleTosaOperator </td>
<td>(</td>
<td class="paramtype">const std::string &amp;&#160;</td>
<td class="paramname"><em>inputName</em>, </td>
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<td class="paramkey"></td>
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<td class="paramname"><em>output_type</em>, </td>
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<td class="paramtype">const std::vector&lt; int32_t &gt; &amp;&#160;</td>
<td class="paramname"><em>shape</em>, </td>
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<td class="paramtype">int32_t&#160;</td>
<td class="paramname"><em>scale_multiplier</em>, </td>
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<td class="paramtype">int32_t&#160;</td>
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<td class="paramtype">int32_t&#160;</td>
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<td class="paramtype">TosaSerializationOperator **&#160;</td>
<td class="paramname"><em>op</em>, </td>
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<td class="paramtype">TosaSerializationTensor **&#160;</td>
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<td>)</td>
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<p class="definition">Definition at line <a class="el" href="_tosa_rescale_operator_utils_8hpp_source.html#l00010">10</a> of file <a class="el" href="_tosa_rescale_operator_utils_8hpp_source.html">TosaRescaleOperatorUtils.hpp</a>.</p>
<div class="fragment"><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="keywordflow">if</span> (!op)</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="keywordflow">throw</span> <a class="code" href="classarmnn_1_1_exception.html">armnn::Exception</a>(<span class="stringliteral">&quot;CreateRescaleTosaOperator: nullptr op&quot;</span>);</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; }</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; std::vector&lt;int32_t&gt; multipliers{scale_multiplier};</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; std::vector&lt;int32_t&gt; shifts{scale_shift};</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; TosaRescaleAttribute attribute(input_zp,</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; output_zp,</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; multipliers,</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; shifts,</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; scale32,</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; double_round,</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; <span class="keyword">false</span>);</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="comment">// op</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; *op = <span class="keyword">new</span> TosaSerializationOperator(Op_RESCALE, Attribute_RescaleAttribute, &amp;attribute, {inputName}, {outputName});</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keywordflow">if</span> (!(*op))</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; {</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keywordflow">throw</span> <a class="code" href="classarmnn_1_1_exception.html">armnn::Exception</a>(<span class="stringliteral">&quot;CreateRescaleTosaOperator: failed to created operator&quot;</span>);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; }</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <span class="keywordflow">if</span> (tensor != <span class="keyword">nullptr</span>)</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="comment">// tensor</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; *tensor = <span class="keyword">new</span> TosaSerializationTensor(outputName, shape, output_type, {});</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keywordflow">if</span> (! (*tensor))</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; {</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keywordflow">throw</span> <a class="code" href="classarmnn_1_1_exception.html">armnn::Exception</a>(<span class="stringliteral">&quot;CreateRescaleTosaOperator: failed to created tensor&quot;</span>);</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; }</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; }</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;}</div>
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<p class="reference">Referenced by <a class="el" href="_tosa_rescale_operator_utils_8hpp_source.html#l00119">CreateFromInt32RescaleTosaOperator()</a>, and <a class="el" href="_tosa_rescale_operator_utils_8hpp_source.html#l00055">CreateRescaleTosaOperator()</a>.</p>
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<div class="ttc" id="a_tosa_rescale_operator_utils_8hpp_html_a4abc0e36fdf181445157310836d44741"><div class="ttname"><a href="_tosa_rescale_operator_utils_8hpp.html#a4abc0e36fdf181445157310836d44741">CreateRescaleTosaOperator</a></div><div class="ttdeci">void CreateRescaleTosaOperator(const std::string &amp;inputName, const std::string &amp;outputName, DType output_type, const std::vector&lt; int32_t &gt; &amp;shape, int32_t scale_multiplier, int32_t scale_shift, int32_t input_zp, int32_t output_zp, bool double_round, bool scale32, TosaSerializationOperator **op, TosaSerializationTensor **tensor)</div><div class="ttdef"><b>Definition:</b> <a href="_tosa_rescale_operator_utils_8hpp_source.html#l00010">TosaRescaleOperatorUtils.hpp:10</a></div></div>
<div class="ttc" id="aclassarmnn_1_1_exception_html"><div class="ttname"><a href="classarmnn_1_1_exception.html">armnn::Exception</a></div><div class="ttdoc">Base class for all ArmNN exceptions so that users can filter to just those.</div><div class="ttdef"><b>Definition:</b> <a href="_exceptions_8hpp_source.html#l00046">Exceptions.hpp:46</a></div></div>
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