Gitiles
Code Review Sign In
review.mlplatform.org / ml / armnn / refs/heads/gh-pages / . / latest / _tosa_rescale_operator_utils_8hpp_source.html
blob: 277062ff46344c2ade5144cbc2c4bdf40a558ef2 [file] [log] [blame]
<!-- HTML header for doxygen 1.8.17-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.17"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>Arm NN: src/backends/tosaCommon/operatorMappings/TosaRescaleOperatorUtils.hpp Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtreedata.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/x-mathjax-config">
MathJax.Hub.Config({
extensions: ["tex2jax.js"],
jax: ["input/TeX","output/HTML-CSS"],
});
</script>
<script type="text/javascript" async="async" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
<link href="customdoxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<img alt="ArmNN" src="Arm_NN_horizontal_blue.png" style="max-width: 15rem; margin-top: .5rem; margin-left 13px"/>
<td id="projectalign" style="padding-left: 0.9em;">
<div id="projectname">
&#160;<span id="projectnumber">24.05</span>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.17 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "search",false,'Search');
/* @license-end */
</script>
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(function() {
initMenu('',true,false,'search.php','Search');
$(document).ready(function() { init_search(); });
});
/* @license-end */</script>
<div id="main-nav"></div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
<div id="nav-sync" class="sync"></div>
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(document).ready(function(){initNavTree('_tosa_rescale_operator_utils_8hpp_source.html',''); initResizable(); });
/* @license-end */
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div class="header">
<div class="headertitle">
<div class="title">TosaRescaleOperatorUtils.hpp</div> </div>
</div><!--header-->
<div class="contents">
<a href="_tosa_rescale_operator_utils_8hpp.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">// Copyright © 2024 Arm Ltd and Contributors. All rights reserved.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// SPDX-License-Identifier: MIT</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160; </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="_exceptions_8hpp.html">armnn/Exceptions.hpp</a>&gt;</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160; </div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#pragma once</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160; </div>
<div class="line"><a name="l00010"></a><span class="lineno"><a class="line" href="_tosa_rescale_operator_utils_8hpp.html#a94df4e987955bf744ebca8211da1c26b"> 10</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="_tosa_rescale_operator_utils_8hpp.html#a94df4e987955bf744ebca8211da1c26b">CreateRescaleTosaOperator</a>(<span class="keyword">const</span> std::string&amp; inputName,</div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160; <span class="keyword">const</span> std::string&amp; outputName,</div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160; <span class="keyword">const</span> std::vector&lt;int32_t&gt;&amp; multipliers,</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160; <span class="keyword">const</span> std::vector&lt;int32_t&gt;&amp; shifts,</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160; int32_t input_zp,</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160; int32_t output_zp,</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160; <span class="keywordtype">bool</span> double_round,</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; <span class="keywordtype">bool</span> scale32,</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160; <span class="keywordtype">bool</span> per_channel,</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; TosaSerializationOperator** op)</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; <span class="keywordflow">if</span> (!op)</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="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="l00024"></a><span class="lineno"> 24</span>&#160; }</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; TosaRescaleAttribute attribute(input_zp,</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; output_zp,</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; multipliers,</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; shifts,</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; scale32,</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; double_round,</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; per_channel,</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; <span class="keyword">false</span>, <span class="comment">// input_unsigned</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; <span class="keyword">false</span>); <span class="comment">// output_unsigned</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; <span class="comment">// op</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; *op = <span class="keyword">new</span> TosaSerializationOperator(Op_RESCALE, Attribute_RescaleAttribute, &amp;attribute, {inputName}, {outputName});</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keywordflow">if</span> (!(*op))</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; {</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</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="l00041"></a><span class="lineno"> 41</span>&#160; }</div>
<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; </div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="_tosa_rescale_operator_utils_8hpp.html#a74fc9aa04679749b331dabf3a22a4379"> 44</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="_tosa_rescale_operator_utils_8hpp.html#a94df4e987955bf744ebca8211da1c26b">CreateRescaleTosaOperator</a>(<span class="keyword">const</span> std::string&amp; inputName,</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keyword">const</span> std::string&amp; outputName,</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; int32_t scale_multiplier,</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; int32_t scale_shift,</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; int32_t input_zp,</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; int32_t output_zp,</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keywordtype">bool</span> double_round,</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keywordtype">bool</span> scale32,</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordtype">bool</span> per_channel,</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; TosaSerializationOperator** op)</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;{</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keyword">const</span> std::vector&lt;int32_t&gt; multipliers{scale_multiplier};</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <span class="keyword">const</span> std::vector&lt;int32_t&gt; shifts{scale_shift};</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <a class="code" href="_tosa_rescale_operator_utils_8hpp.html#a94df4e987955bf744ebca8211da1c26b">CreateRescaleTosaOperator</a>(inputName, outputName, multipliers, shifts,</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; input_zp, output_zp, double_round, scale32, per_channel, op);</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;}</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="comment">/// The following is taken from mlir/lib/Dialect/Tosa/Utils/QuantUtils.cpp in the LLVM project</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="comment">/// From a scale value, generates multiplier and shift values where</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="comment">/// mantissa is in [-1.0,-0.5] or [0.5, 1.0] such that</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="comment">/// multiplier = mantissa*2^shift for 32-bit scaling.</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="comment"></span><span class="keyword">static</span> <span class="keywordtype">void</span> ComputeMultiplierAndShiftTosaScale32(<span class="keywordtype">double</span> scale,</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; int32_t &amp;multiplier,</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; int32_t &amp;shift)</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;{</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keyword">const</span> <span class="keywordtype">double</span> mantissa = std::frexp(scale, &amp;shift);</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keyword">auto</span> shiftedM = std::round(mantissa * (int64_t(1) &lt;&lt; 31));</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; <span class="comment">// Can&#39;t be greater than 1.0.</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keywordflow">if</span> (!(shiftedM &lt;= (int64_t(1) &lt;&lt; 31)))</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="keywordflow">throw</span> <a class="code" href="classarmnn_1_1_exception.html">armnn::Exception</a>(<span class="stringliteral">&quot;Shifted mantissa exceeds 32 signed bits&quot;</span>);</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; </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordflow">if</span> (shiftedM == (int64_t(1) &lt;&lt; 31))</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; {</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; shiftedM /= 2;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; shift++;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; }</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="comment">// TOSA expects right shift to be positive, and embed (1 &lt;&lt; 31) into right</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <span class="comment">// shift bits.</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; shift = (-shift) + 31;</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="keywordflow">if</span> (!(shiftedM &lt;= std::numeric_limits&lt;int32_t&gt;::max()))</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; {</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordflow">throw</span> <a class="code" href="classarmnn_1_1_exception.html">armnn::Exception</a>(<span class="stringliteral">&quot;Shifted mantissa exceeds 32-bit signed output type&quot;</span>);</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; </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; multiplier = <span class="keyword">static_cast&lt;</span>int32_t<span class="keyword">&gt;</span>(shiftedM);</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="comment">// Shifting tops out at 62 bits. Right shift to make 62 bits the max.</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="comment">// The limit of 62 on shift allows the shift to be decomposed as</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="comment">// two right shifts of 31.</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="keywordflow">if</span> (shift &gt; 62)</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; <span class="comment">// Shifting the multiplier by more than 32-bits is unnecessary.</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; multiplier = multiplier &gt;&gt; std::min&lt;int32_t&gt;(31, shift - 62);</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; shift = 62;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; }</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;}</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="comment">/// The following is taken from mlir/lib/Dialect/Tosa/Utils/QuantUtils.cpp in the LLVM project</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;<span class="comment">/// From a scale value, generates multiplier and shift values where</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;<span class="comment">/// mantissa is in [-1.0,-0.5] or [0.5, 1.0] such that</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;<span class="comment">/// multiplier = mantissa*2^shift for 16-bit scaling.</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;<span class="comment"></span><span class="keyword">static</span> <span class="keywordtype">void</span> ComputeMultiplierAndShiftTosaScale16(<span class="keywordtype">double</span> scale,</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; int32_t &amp;multiplier,</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; int32_t &amp;shift)</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;{</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="keyword">const</span> <span class="keywordtype">double</span> mantissa = std::frexp(scale, &amp;shift);</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="keyword">auto</span> shiftedM = std::round(mantissa * (int64_t(1) &lt;&lt; 15));</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; </div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="comment">// Can&#39;t be greater than 1.0.</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <span class="keywordflow">if</span> (!(shiftedM &lt;= (int64_t(1) &lt;&lt; 15)))</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; {</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; <span class="keywordflow">throw</span> <a class="code" href="classarmnn_1_1_exception.html">armnn::Exception</a>(<span class="stringliteral">&quot;Shifted mantissa exceeds 16 signed bits&quot;</span>);</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; }</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <span class="keywordflow">if</span> (shiftedM == (int64_t(1) &lt;&lt; 15))</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; {</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; shiftedM /= 2;</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; shift++;</div>
<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; </div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; <span class="comment">// TOSA expects right shift to be positive and embed (1 &lt;&lt; 15) into right</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <span class="comment">// shift bits.</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; shift = (-shift) + 15;</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; </div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; <span class="keywordflow">if</span> (!(shiftedM &lt;= std::numeric_limits&lt;int32_t&gt;::max()))</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; {</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; <span class="keywordflow">throw</span> <a class="code" href="classarmnn_1_1_exception.html">armnn::Exception</a>(<span class="stringliteral">&quot;Shifted mantissa exceeds 32-bit signed output type&quot;</span>);</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; }</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; </div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; multiplier = <span class="keyword">static_cast&lt;</span>int32_t<span class="keyword">&gt;</span>(shiftedM);</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; <span class="comment">// Shifting tops out at 62 bits. Right shift to make 62 bits the max.</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; <span class="comment">// The limit of 62 on shift allows the shift to be decomposed as</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; <span class="comment">// two right shifts of 31.</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; <span class="keywordflow">if</span> (shift &gt; 62)</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; {</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <span class="comment">// Shifting the multiplier by more than 31-bits is unnecessary.</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; multiplier = multiplier &gt;&gt; std::min&lt;int32_t&gt;(31, shift - 62);</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; shift = 62;</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; }</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;}</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; </div>
<div class="line"><a name="l00151"></a><span class="lineno"><a class="line" href="_tosa_rescale_operator_utils_8hpp.html#aa3758e4cfd6c9f057eb8a092c54ff51a"> 151</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="_tosa_rescale_operator_utils_8hpp.html#a94df4e987955bf744ebca8211da1c26b">CreateRescaleTosaOperator</a>(<span class="keyword">const</span> std::string&amp; inputName,</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; <span class="keyword">const</span> std::string&amp; outputName,</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="keywordtype">double</span> scale,</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; int32_t input_zp,</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; int32_t output_zp,</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; <span class="keywordtype">bool</span> double_round,</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; <span class="keywordtype">bool</span> scale32,</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; TosaSerializationOperator** op)</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;{</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; int32_t multiplier;</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; int32_t shift;</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; </div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; <span class="keywordflow">if</span> (scale32)</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; {</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; ComputeMultiplierAndShiftTosaScale32(scale, multiplier, shift);</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; }</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; {</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; ComputeMultiplierAndShiftTosaScale16(scale, multiplier, shift);</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; }</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; </div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <a class="code" href="_tosa_rescale_operator_utils_8hpp.html#a94df4e987955bf744ebca8211da1c26b">CreateRescaleTosaOperator</a>(inputName, outputName, multiplier, shift,</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; input_zp, output_zp, double_round, scale32, <span class="keyword">false</span>, op);</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;}</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; </div>
<div class="line"><a name="l00176"></a><span class="lineno"><a class="line" href="_tosa_rescale_operator_utils_8hpp.html#a79aec6ca11f6c256ad8a9c9e5a4249ff"> 176</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="_tosa_rescale_operator_utils_8hpp.html#a79aec6ca11f6c256ad8a9c9e5a4249ff">CreateRescaleTosaOperatorPerChannel</a>(<span class="keyword">const</span> std::string&amp; inputName,</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <span class="keyword">const</span> std::string&amp; outputName,</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; int32_t input_zp,</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; int32_t output_zp,</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; <span class="keywordtype">bool</span> double_round,</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; <span class="keywordtype">bool</span> scale32,</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="keywordtype">double</span> input_scale,</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; <span class="keywordtype">double</span> output_scale,</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; <span class="keyword">const</span> std::vector&lt;float&gt;&amp; weight_scales,</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; TosaSerializationOperator** op)</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;{</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; std::vector&lt;int32_t&gt; op_tensor_multipliers;</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; std::vector&lt;int32_t&gt; op_tensor_shifts;</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; op_tensor_multipliers.reserve(weight_scales.size());</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; op_tensor_shifts.reserve(weight_scales.size());</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; </div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">float</span>&amp; weight_scale : weight_scales)</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; {</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; <span class="keywordtype">double</span> op_tensor_scale = (input_scale * weight_scale) / output_scale;</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; int32_t multiplier;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; int32_t shift;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; </div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; <span class="keywordflow">if</span> (scale32)</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; {</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; ComputeMultiplierAndShiftTosaScale32(op_tensor_scale, multiplier, shift);</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; }</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; {</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; ComputeMultiplierAndShiftTosaScale16(op_tensor_scale, multiplier, shift);</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; }</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; </div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; op_tensor_multipliers.push_back(multiplier);</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; op_tensor_shifts.push_back(shift);</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; }</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; </div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; <a class="code" href="_tosa_rescale_operator_utils_8hpp.html#a94df4e987955bf744ebca8211da1c26b">CreateRescaleTosaOperator</a>(inputName, outputName, op_tensor_multipliers, op_tensor_shifts,</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; input_zp, output_zp, double_round, scale32, <span class="keyword">true</span>, op);</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160;}</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; </div>
<div class="line"><a name="l00215"></a><span class="lineno"><a class="line" href="_tosa_rescale_operator_utils_8hpp.html#a7ef53b1ca24c27b43411bc42280937ff"> 215</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="_tosa_rescale_operator_utils_8hpp.html#a7ef53b1ca24c27b43411bc42280937ff">CreateFromInt32RescaleTosaOperator</a>(<span class="keyword">const</span> std::string&amp; inputName,</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; <span class="keyword">const</span> std::string&amp; outputName,</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <span class="keywordtype">double</span> output_scale,</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; int32_t output_zp,</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; TosaSerializationOperator** op)</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160;{</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; <a class="code" href="_tosa_rescale_operator_utils_8hpp.html#a94df4e987955bf744ebca8211da1c26b">CreateRescaleTosaOperator</a>(inputName, outputName, output_scale,</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; 0, output_zp, <span class="keyword">true</span>, <span class="keyword">true</span>, op);</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160;}</div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<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>
<div class="ttc" id="a_tosa_rescale_operator_utils_8hpp_html_a79aec6ca11f6c256ad8a9c9e5a4249ff"><div class="ttname"><a href="_tosa_rescale_operator_utils_8hpp.html#a79aec6ca11f6c256ad8a9c9e5a4249ff">CreateRescaleTosaOperatorPerChannel</a></div><div class="ttdeci">void CreateRescaleTosaOperatorPerChannel(const std::string &amp;inputName, const std::string &amp;outputName, int32_t input_zp, int32_t output_zp, bool double_round, bool scale32, double input_scale, double output_scale, const std::vector&lt; float &gt; &amp;weight_scales, TosaSerializationOperator **op)</div><div class="ttdef"><b>Definition:</b> <a href="_tosa_rescale_operator_utils_8hpp_source.html#l00176">TosaRescaleOperatorUtils.hpp:176</a></div></div>
<div class="ttc" id="a_exceptions_8hpp_html"><div class="ttname"><a href="_exceptions_8hpp.html">Exceptions.hpp</a></div></div>
<div class="ttc" id="a_tosa_rescale_operator_utils_8hpp_html_a7ef53b1ca24c27b43411bc42280937ff"><div class="ttname"><a href="_tosa_rescale_operator_utils_8hpp.html#a7ef53b1ca24c27b43411bc42280937ff">CreateFromInt32RescaleTosaOperator</a></div><div class="ttdeci">void CreateFromInt32RescaleTosaOperator(const std::string &amp;inputName, const std::string &amp;outputName, double output_scale, int32_t output_zp, TosaSerializationOperator **op)</div><div class="ttdef"><b>Definition:</b> <a href="_tosa_rescale_operator_utils_8hpp_source.html#l00215">TosaRescaleOperatorUtils.hpp:215</a></div></div>
<div class="ttc" id="a_tosa_rescale_operator_utils_8hpp_html_a94df4e987955bf744ebca8211da1c26b"><div class="ttname"><a href="_tosa_rescale_operator_utils_8hpp.html#a94df4e987955bf744ebca8211da1c26b">CreateRescaleTosaOperator</a></div><div class="ttdeci">void CreateRescaleTosaOperator(const std::string &amp;inputName, const std::string &amp;outputName, const std::vector&lt; int32_t &gt; &amp;multipliers, const std::vector&lt; int32_t &gt; &amp;shifts, int32_t input_zp, int32_t output_zp, bool double_round, bool scale32, bool per_channel, TosaSerializationOperator **op)</div><div class="ttdef"><b>Definition:</b> <a href="_tosa_rescale_operator_utils_8hpp_source.html#l00010">TosaRescaleOperatorUtils.hpp:10</a></div></div>
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><a class="el" href="dir_0f3cdec46afbc61a1ded8e1687c9c9a0.html">backends</a></li><li class="navelem"><a class="el" href="dir_3eeadfb79f8e6e284b92aba47a7684a1.html">tosaCommon</a></li><li class="navelem"><a class="el" href="dir_44a5c203710327e1068d2575c20cb7c6.html">operatorMappings</a></li><li class="navelem"><a class="el" href="_tosa_rescale_operator_utils_8hpp.html">TosaRescaleOperatorUtils.hpp</a></li>
<li class="footer">Generated on Thu May 16 2024 09:31:49 for Arm NN by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.17 </li>
</ul>
</div>
</body>
</html>