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Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]39 &#160;<span id="projectnumber">24.05</span>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]40 </div>
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96<div class="title">TypesUtils.cpp</div> </div>
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98<div class="contents">
99<a href="_types_utils_8cpp.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>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]100<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">// Copyright © 2017, 2024 Arm Ltd. All rights reserved.</span></div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]101<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// SPDX-License-Identifier: MIT</span></div>
102<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">//</span></div>
103<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="_types_utils_8hpp.html">armnn/TypesUtils.hpp</a>&gt;</span></div>
104<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="_assert_8hpp.html">armnn/utility/Assert.hpp</a>&gt;</span></div>
105<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="_numeric_cast_8hpp.html">armnn/utility/NumericCast.hpp</a>&gt;</span></div>
106<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160; </div>
107<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="keyword">namespace</span></div>
108<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;{<span class="comment"></span></div>
109<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">/// Workaround for std:isnan() not being implemented correctly for integral types in MSVC.</span></div>
110<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment">/// https://stackoverflow.com/a/56356405</span></div>
111<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment">/// @{</span></div>
112<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"></span>template &lt;typename T, typename std::enable_if&lt;std::is_integral&lt;T&gt;::value, T&gt;::type* = <span class="keyword">nullptr</span>&gt;</div>
113<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">int</span> IsNan(T x)</div>
114<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;{</div>
115<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; <span class="comment">// The spec defines integral types to be handled as if they were casted to doubles.</span></div>
116<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160; <span class="keywordflow">return</span> std::isnan(<span class="keyword">static_cast&lt;</span><span class="keywordtype">double</span><span class="keyword">&gt;</span>(x));</div>
117<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;}</div>
118<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160; </div>
119<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;template &lt;typename T, typename std::enable_if&lt;!std::is_integral&lt;T&gt;::value, T&gt;::type * = <span class="keyword">nullptr</span>&gt;</div>
120<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">int</span> IsNan(T x)</div>
121<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;{</div>
122<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; <span class="keywordflow">return</span> std::isnan(x);</div>
123<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;}<span class="comment"></span></div>
124<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="comment">/// @}</span></div>
125<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="comment"></span>} <span class="comment">// namespace std</span></div>
126<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; </div>
127<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> QuantizedType&gt;</div>
128<div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="namespacearmnn.html#ad773a034fb9983e15f3094b4c5c7c30c"> 30</a></span>&#160;QuantizedType <a class="code" href="namespacearmnn.html#ad773a034fb9983e15f3094b4c5c7c30c">armnn::Quantize</a>(<span class="keywordtype">float</span> value, <span class="keywordtype">float</span> scale, int32_t offset)</div>
129<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;{</div>
130<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; static_assert(IsQuantizedType&lt;QuantizedType&gt;(), <span class="stringliteral">&quot;Not an integer type.&quot;</span>);</div>
131<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; constexpr QuantizedType max = std::numeric_limits&lt;QuantizedType&gt;::max();</div>
132<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; constexpr QuantizedType min = std::numeric_limits&lt;QuantizedType&gt;::lowest();</div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]133<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <span class="keywordflow">if</span> (std::isnan(value))</div>
Nikhil Raj6f92c8e2023-11-22 11:41:15 +0000[diff] [blame]134<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; {</div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]135<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="keywordflow">throw</span> <a class="code" href="classarmnn_1_1_invalid_argument_exception.html">armnn::InvalidArgumentException</a>(<span class="stringliteral">&quot;Quantize: Value is NaN&quot;</span>);</div>
Nikhil Raj6f92c8e2023-11-22 11:41:15 +0000[diff] [blame]136<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; }</div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]137<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; </div>
138<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keywordtype">float</span> clampedValue = std::min(std::max((<span class="keyword">static_cast&lt;</span><span class="keywordtype">float</span><span class="keyword">&gt;</span>(offset) + <span class="keyword">static_cast&lt;</span><span class="keywordtype">float</span><span class="keyword">&gt;</span>(round(value/scale))),</div>
139<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keyword">static_cast&lt;</span><span class="keywordtype">float</span><span class="keyword">&gt;</span>(min)), <span class="keyword">static_cast&lt;</span><span class="keywordtype">float</span><span class="keyword">&gt;</span>(max));</div>
140<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keyword">auto</span> quantizedBits = <span class="keyword">static_cast&lt;</span>QuantizedType<span class="keyword">&gt;</span>(clampedValue);</div>
Nikhil Raj6f92c8e2023-11-22 11:41:15 +0000[diff] [blame]141<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; </div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]142<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <span class="keywordflow">return</span> quantizedBits;</div>
143<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;}</div>
144<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; </div>
145<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> QuantizedType&gt;</div>
146<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="namespacearmnn.html#a855293b1be0581fb61ef6a1c5b027d0f"> 48</a></span>&#160;<span class="keywordtype">float</span> <a class="code" href="namespacearmnn.html#a855293b1be0581fb61ef6a1c5b027d0f">armnn::Dequantize</a>(QuantizedType value, <span class="keywordtype">float</span> scale, int32_t offset)</div>
147<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;{</div>
148<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; static_assert(IsQuantizedType&lt;QuantizedType&gt;(), <span class="stringliteral">&quot;Not an integer type.&quot;</span>);</div>
149<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keywordflow">if</span> (std::isnan(value))</div>
150<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; {</div>
151<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keywordflow">throw</span> <a class="code" href="classarmnn_1_1_invalid_argument_exception.html">armnn::InvalidArgumentException</a>(<span class="stringliteral">&quot;Dequantize: Value is NaN&quot;</span>);</div>
152<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; }</div>
153<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keywordflow">return</span> (armnn::numeric_cast&lt;float&gt;(value - offset)) * scale;</div>
154<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;}</div>
155<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="comment"></span> </div>
156<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;<span class="comment">/// Explicit specialization of Quantize for int8_t</span></div>
157<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="comment"></span><span class="keyword">template</span></div>
158<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;int8_t armnn::Quantize&lt;int8_t&gt;(<span class="keywordtype">float</span> value, <span class="keywordtype">float</span> scale, int32_t offset);</div>
159<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="comment"></span> </div>
160<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="comment">/// Explicit specialization of Quantize for uint8_t</span></div>
161<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="comment"></span><span class="keyword">template</span></div>
162<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;uint8_t armnn::Quantize&lt;uint8_t&gt;(<span class="keywordtype">float</span> value, <span class="keywordtype">float</span> scale, int32_t offset);</div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]163<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="comment"></span> </div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]164<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="comment">/// Explicit specialization of Quantize for int16_t</span></div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]165<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="comment"></span><span class="keyword">template</span></div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]166<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;int16_t armnn::Quantize&lt;int16_t&gt;(<span class="keywordtype">float</span> value, <span class="keywordtype">float</span> scale, int32_t offset);</div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]167<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;<span class="comment"></span> </div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]168<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;<span class="comment">/// Explicit specialization of Quantize for int32_t</span></div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]169<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<span class="comment"></span><span class="keyword">template</span></div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]170<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;int32_t armnn::Quantize&lt;int32_t&gt;(<span class="keywordtype">float</span> value, <span class="keywordtype">float</span> scale, int32_t offset);</div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]171<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment"></span> </div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]172<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="comment">/// Explicit specialization of Dequantize for int8_t</span></div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]173<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="comment"></span><span class="keyword">template</span></div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]174<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="keywordtype">float</span> armnn::Dequantize&lt;int8_t&gt;(int8_t value, <span class="keywordtype">float</span> scale, int32_t offset);</div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]175<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;<span class="comment"></span> </div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]176<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="comment">/// Explicit specialization of Dequantize for uint8_t</span></div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]177<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<span class="comment"></span><span class="keyword">template</span></div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]178<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;<span class="keywordtype">float</span> armnn::Dequantize&lt;uint8_t&gt;(uint8_t value, <span class="keywordtype">float</span> scale, int32_t offset);</div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]179<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;<span class="comment"></span> </div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]180<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;<span class="comment">/// Explicit specialization of Dequantize for int16_t</span></div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]181<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="comment"></span><span class="keyword">template</span></div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]182<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;<span class="keywordtype">float</span> armnn::Dequantize&lt;int16_t&gt;(int16_t value, <span class="keywordtype">float</span> scale, int32_t offset);</div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]183<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="comment"></span> </div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]184<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="comment">/// Explicit specialization of Dequantize for int32_t</span></div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]185<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="comment"></span><span class="keyword">template</span></div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]186<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="keywordtype">float</span> armnn::Dequantize&lt;int32_t&gt;(int32_t value, <span class="keywordtype">float</span> scale, int32_t offset);</div>
Nikhil Raj6f92c8e2023-11-22 11:41:15 +0000[diff] [blame]187<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="comment"></span> </div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]188<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;<span class="comment">/// Explicit specialization of Dequantize for int64_t</span></div>
Nikhil Raj6f92c8e2023-11-22 11:41:15 +0000[diff] [blame]189<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;<span class="comment"></span><span class="keyword">template</span></div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]190<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="keywordtype">float</span> armnn::Dequantize&lt;int64_t&gt;(int64_t value, <span class="keywordtype">float</span> scale, int32_t offset);</div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]191</div><!-- fragment --></div><!-- contents -->
192</div><!-- doc-content -->
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]193<div class="ttc" id="a_types_utils_8hpp_html"><div class="ttname"><a href="_types_utils_8hpp.html">TypesUtils.hpp</a></div></div>
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Nikhil Raj6f92c8e2023-11-22 11:41:15 +0000[diff] [blame]196<div class="ttc" id="aclassarmnn_1_1_invalid_argument_exception_html"><div class="ttname"><a href="classarmnn_1_1_invalid_argument_exception.html">armnn::InvalidArgumentException</a></div><div class="ttdef"><b>Definition:</b> <a href="_exceptions_8hpp_source.html#l00080">Exceptions.hpp:80</a></div></div>
Nikhil Raj1dc83fe2024-05-16 09:47:51 +0100[diff] [blame]197<div class="ttc" id="anamespacearmnn_html_a855293b1be0581fb61ef6a1c5b027d0f"><div class="ttname"><a href="namespacearmnn.html#a855293b1be0581fb61ef6a1c5b027d0f">armnn::Dequantize</a></div><div class="ttdeci">float Dequantize(QuantizedType value, float scale, int32_t offset)</div><div class="ttdoc">Dequantize an 8-bit data type into a floating point data type.</div><div class="ttdef"><b>Definition:</b> <a href="_types_utils_8cpp_source.html#l00048">TypesUtils.cpp:48</a></div></div>
Nikhil Raj03c7ff32023-08-22 12:00:04 +0100[diff] [blame]198<div class="ttc" id="anamespacearmnn_html_ad773a034fb9983e15f3094b4c5c7c30c"><div class="ttname"><a href="namespacearmnn.html#ad773a034fb9983e15f3094b4c5c7c30c">armnn::Quantize</a></div><div class="ttdeci">QuantizedType Quantize(float value, float scale, int32_t offset)</div><div class="ttdoc">Quantize a floating point data type into an 8-bit data type.</div><div class="ttdef"><b>Definition:</b> <a href="_types_utils_8cpp_source.html#l00030">TypesUtils.cpp:30</a></div></div>
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