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<a href="_fixed_point_8inl.xhtml">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 (c) 2017 ARM Limited.</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * SPDX-License-Identifier: MIT</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * of this software and associated documentation files (the &quot;Software&quot;), to</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * deal in the Software without restriction, including without limitation the</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * sell copies of the Software, and to permit persons to whom the Software is</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * furnished to do so, subject to the following conditions:</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * The above copyright notice and this permission notice shall be included in all</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * copies or substantial portions of the Software.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> * THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="comment"> * SOFTWARE.</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &lt;cmath&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#include &lt;limits&gt;</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;<span class="keyword">namespace</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;{</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> TpIn, <span class="keyword">typename</span> TpSat&gt;</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="keyword">inline</span> TpSat saturate_convert(TpIn a)</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; <span class="keywordflow">if</span>(a &gt; <a class="code" href="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail.xhtml#ad91bb73431b4de1f4946ed949d444849">std::numeric_limits&lt;TpSat&gt;::max</a>())</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; {</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; a = <a class="code" href="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail.xhtml#ad91bb73431b4de1f4946ed949d444849">std::numeric_limits&lt;TpSat&gt;::max</a>();</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="keywordflow">if</span>(a &lt; <a class="code" href="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail.xhtml#aabcf39e3917f842dbc5fbb0d802f24d5">std::numeric_limits&lt;TpSat&gt;::min</a>())</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; a = <a class="code" href="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail.xhtml#aabcf39e3917f842dbc5fbb0d802f24d5">std::numeric_limits&lt;TpSat&gt;::min</a>();</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">return</span> <span class="keyword">static_cast&lt;</span>TpSat<span class="keyword">&gt;</span>(a);</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="comment">// namespace</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="keyword">namespace </span><a class="code" href="namespacearm__compute.xhtml">arm_compute</a></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"><a class="line" href="namespacearm__compute.xhtml#a203882febb616f5468d1b63b60ffb331"> 46</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#a203882febb616f5468d1b63b60ffb331">sqshl_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a, <span class="keywordtype">int</span> shift)</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;{</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> tmp = <span class="keyword">static_cast&lt;</span><a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a><span class="keyword">&gt;</span>(a) &lt;&lt; shift;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="comment">// Saturate the result in case of overflow and cast to qint8_t</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keywordflow">return</span> saturate_convert&lt;qint16_t, qint8_t&gt;(tmp);</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"><a class="line" href="namespacearm__compute.xhtml#a43315c66c4d00207f70143233b189085"> 53</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#a43315c66c4d00207f70143233b189085">sabs_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a)</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="keywordflow">return</span> a &amp; 0x7F;</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;}</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#aa8cee074ec68e2ae7830a9472efd8429"> 58</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#aa8cee074ec68e2ae7830a9472efd8429">sadd_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a, <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> b)</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="keywordflow">return</span> a + b;</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;}</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;</div><div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#a532d90e007d0cb6f3d43107229c40c32"> 63</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#a532d90e007d0cb6f3d43107229c40c32">sqadd_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a, <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> b)</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;{</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="comment">// We need to store the temporary result in qint16_t otherwise we cannot evaluate the overflow</span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> tmp = (<span class="keyword">static_cast&lt;</span><a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a><span class="keyword">&gt;</span>(a) + static_cast&lt;qint16_t&gt;(b));</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="comment">// Saturate the result in case of overflow and cast to qint8_t</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keywordflow">return</span> saturate_convert&lt;qint16_t, qint8_t&gt;(tmp);</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;}</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"><a class="line" href="namespacearm__compute.xhtml#a45669fcc0f31fce521179510e85dcb62"> 72</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> <a class="code" href="namespacearm__compute.xhtml#a45669fcc0f31fce521179510e85dcb62">sqadd_qs16</a>(<a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> a, <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> b)</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;{</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="comment">// We need to store the temporary result in qint16_t otherwise we cannot evaluate the overflow</span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <a class="code" href="namespacearm__compute.xhtml#aa06c95f9976f3729316d689b4419089f">qint32_t</a> tmp = (<span class="keyword">static_cast&lt;</span><a class="code" href="namespacearm__compute.xhtml#aa06c95f9976f3729316d689b4419089f">qint32_t</a><span class="keyword">&gt;</span>(a) + static_cast&lt;qint32_t&gt;(b));</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="comment">// Saturate the result in case of overflow and cast to qint16_t</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordflow">return</span> saturate_convert&lt;qint32_t, qint16_t&gt;(tmp);</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;</div><div class="line"><a name="l00081"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#ab97841950d268532e51f28a208ddafd4"> 81</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#ab97841950d268532e51f28a208ddafd4">ssub_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a, <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> b)</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; <span class="keywordflow">return</span> a - b;</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;}</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;</div><div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#ae74bbb6e25cc1b774428722b2faad00c"> 86</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#ae74bbb6e25cc1b774428722b2faad00c">sqsub_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a, <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> b)</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="comment">// We need to store the temporary result in uint16_t otherwise we cannot evaluate the overflow</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> tmp = <span class="keyword">static_cast&lt;</span><a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a><span class="keyword">&gt;</span>(a) - static_cast&lt;qint16_t&gt;(b);</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="comment">// Saturate the result in case of overflow and cast to qint8_t</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keywordflow">return</span> saturate_convert&lt;qint16_t, qint8_t&gt;(tmp);</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;}</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"><a class="line" href="namespacearm__compute.xhtml#aec48f137adc904d648dd7eba0d828fab"> 95</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#aec48f137adc904d648dd7eba0d828fab">smul_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a, <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> b, <span class="keywordtype">int</span> fixed_point_position)</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; <span class="keyword">const</span> <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> round_up_const = (1 &lt;&lt; (fixed_point_position - 1));</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; <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> tmp = <span class="keyword">static_cast&lt;</span><a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a><span class="keyword">&gt;</span>(a) * static_cast&lt;qint16_t&gt;(b);</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="comment">// Rounding up</span></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; tmp += round_up_const;</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; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span><a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a><span class="keyword">&gt;</span>(tmp &gt;&gt; fixed_point_position);</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;</div><div class="line"><a name="l00107"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#af0b73b0c4980a551d7cd4edec43ffd92"> 107</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#af0b73b0c4980a551d7cd4edec43ffd92">sqmul_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a, <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> b, <span class="keywordtype">int</span> fixed_point_position)</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;{</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keyword">const</span> <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> round_up_const = (1 &lt;&lt; (fixed_point_position - 1));</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; <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> tmp = <span class="keyword">static_cast&lt;</span><a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a><span class="keyword">&gt;</span>(a) * static_cast&lt;qint16_t&gt;(b);</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="comment">// Rounding up</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; tmp += round_up_const;</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="keywordflow">return</span> saturate_convert&lt;qint16_t, qint8_t&gt;(tmp &gt;&gt; fixed_point_position);</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;}</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;</div><div class="line"><a name="l00119"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#a55c8a365b4242664f8c0f19e91bcee92"> 119</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> <a class="code" href="namespacearm__compute.xhtml#a55c8a365b4242664f8c0f19e91bcee92">sqmul_qs16</a>(<a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> a, <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> b, <span class="keywordtype">int</span> fixed_point_position)</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;{</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; <span class="keyword">const</span> <a class="code" href="namespacearm__compute.xhtml#aa06c95f9976f3729316d689b4419089f">qint32_t</a> round_up_const = (1 &lt;&lt; (fixed_point_position - 1));</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; <a class="code" href="namespacearm__compute.xhtml#aa06c95f9976f3729316d689b4419089f">qint32_t</a> tmp = <span class="keyword">static_cast&lt;</span><a class="code" href="namespacearm__compute.xhtml#aa06c95f9976f3729316d689b4419089f">qint32_t</a><span class="keyword">&gt;</span>(a) * static_cast&lt;qint32_t&gt;(b);</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; <span class="comment">// Rounding up</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; tmp += round_up_const;</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; <span class="keywordflow">return</span> saturate_convert&lt;qint32_t, qint16_t&gt;(tmp &gt;&gt; fixed_point_position);</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;}</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;</div><div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#a0721e062e6d7a90f07fd08aeda5e7eda"> 131</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> <a class="code" href="namespacearm__compute.xhtml#a0721e062e6d7a90f07fd08aeda5e7eda">sqmull_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a, <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> b, <span class="keywordtype">int</span> fixed_point_position)</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="keyword">const</span> <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> round_up_const = (1 &lt;&lt; (fixed_point_position - 1));</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; <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> tmp = <span class="keyword">static_cast&lt;</span><a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a><span class="keyword">&gt;</span>(a) * static_cast&lt;qint16_t&gt;(b);</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; <span class="comment">// Rounding up</span></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; tmp += round_up_const;</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="keywordflow">return</span> tmp &gt;&gt; fixed_point_position;</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;}</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;</div><div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#ab768d7001612a149c0bf695b773d659b"> 143</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#ab768d7001612a149c0bf695b773d659b">sinvsqrt_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a, <span class="keywordtype">int</span> fixed_point_position)</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; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> shift = 8 - (fixed_point_position + (__builtin_clz(a) - 24));</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> const_three = (3 &lt;&lt; fixed_point_position);</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> temp = shift &lt; 0 ? (a &lt;&lt; -shift) : (a &gt;&gt; shift);</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> x2 = temp;</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"> 151</span>&#160; <span class="comment">// We need three iterations to find the result</span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i &lt; 3; i++)</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; {</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> three_minus_dx = <a class="code" href="namespacearm__compute.xhtml#ab97841950d268532e51f28a208ddafd4">ssub_qs8</a>(const_three, <a class="code" href="namespacearm__compute.xhtml#aec48f137adc904d648dd7eba0d828fab">smul_qs8</a>(temp, <a class="code" href="namespacearm__compute.xhtml#aec48f137adc904d648dd7eba0d828fab">smul_qs8</a>(x2, x2, fixed_point_position), fixed_point_position));</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; x2 = (<a class="code" href="namespacearm__compute.xhtml#aec48f137adc904d648dd7eba0d828fab">smul_qs8</a>(x2, three_minus_dx, fixed_point_position) &gt;&gt; 1);</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; }</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; temp = shift &lt; 0 ? (x2 &lt;&lt; (-shift &gt;&gt; 1)) : (x2 &gt;&gt; (shift &gt;&gt; 1));</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; <span class="keywordflow">return</span> temp;</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;}</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"><a class="line" href="namespacearm__compute.xhtml#ae39636f0e83dd3b854b89181a230216f"> 163</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#ae39636f0e83dd3b854b89181a230216f">sdiv_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a, <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> b, <span class="keywordtype">int</span> fixed_point_position)</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; <a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> temp = a &lt;&lt; fixed_point_position;</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; <span class="keywordflow">return</span> (<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a>)(temp / b);</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;}</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"><a class="line" href="namespacearm__compute.xhtml#a6458ccaf13f1c225d6b60672754f2c72"> 169</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#a6458ccaf13f1c225d6b60672754f2c72">sqexp_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a, <span class="keywordtype">int</span> fixed_point_position)</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; <span class="comment">// Constants</span></div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> const_one = (1 &lt;&lt; fixed_point_position);</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> ln2 = ((0x58 &gt;&gt; (6 - fixed_point_position)) + 1) &gt;&gt; 1;</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> inv_ln2 = (((0x38 &gt;&gt; (6 - fixed_point_position)) + 1) &gt;&gt; 1) | const_one;</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#a1ce9b523fd4f3b5bbcadcd796183455aa7fc56270e7a70fa81a5935b72eacbe29">A</a> = ((0x7F &gt;&gt; (6 - fixed_point_position)) + 1) &gt;&gt; 1;</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#a1ce9b523fd4f3b5bbcadcd796183455aa9d5ed678fe57bcca610140957afab571">B</a> = ((0x3F &gt;&gt; (6 - fixed_point_position)) + 1) &gt;&gt; 1;</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> C = ((0x16 &gt;&gt; (6 - fixed_point_position)) + 1) &gt;&gt; 1;</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> D = ((0x05 &gt;&gt; (6 - fixed_point_position)) + 1) &gt;&gt; 1;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; <span class="comment">// Polynomial expansion</span></div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; <span class="keywordtype">int</span> dec_a = (<a class="code" href="namespacearm__compute.xhtml#af0b73b0c4980a551d7cd4edec43ffd92">sqmul_qs8</a>(a, inv_ln2, fixed_point_position) &gt;&gt; fixed_point_position);</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> alpha = <a class="code" href="namespacearm__compute.xhtml#a43315c66c4d00207f70143233b189085">sabs_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#ae74bbb6e25cc1b774428722b2faad00c">sqsub_qs8</a>(a, <a class="code" href="namespacearm__compute.xhtml#af0b73b0c4980a551d7cd4edec43ffd92">sqmul_qs8</a>(ln2, <a class="code" href="namespacearm__compute.xhtml#a203882febb616f5468d1b63b60ffb331">sqshl_qs8</a>(dec_a, fixed_point_position), fixed_point_position)));</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> sum = <a class="code" href="namespacearm__compute.xhtml#a532d90e007d0cb6f3d43107229c40c32">sqadd_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#af0b73b0c4980a551d7cd4edec43ffd92">sqmul_qs8</a>(alpha, D, fixed_point_position), C);</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; sum = <a class="code" href="namespacearm__compute.xhtml#a532d90e007d0cb6f3d43107229c40c32">sqadd_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#af0b73b0c4980a551d7cd4edec43ffd92">sqmul_qs8</a>(alpha, sum, fixed_point_position), B);</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; sum = <a class="code" href="namespacearm__compute.xhtml#a532d90e007d0cb6f3d43107229c40c32">sqadd_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#af0b73b0c4980a551d7cd4edec43ffd92">sqmul_qs8</a>(alpha, sum, fixed_point_position), A);</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; sum = <a class="code" href="namespacearm__compute.xhtml#af0b73b0c4980a551d7cd4edec43ffd92">sqmul_qs8</a>(alpha, sum, fixed_point_position);</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; sum = <a class="code" href="namespacearm__compute.xhtml#a532d90e007d0cb6f3d43107229c40c32">sqadd_qs8</a>(sum, const_one);</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; <span class="keywordflow">return</span> (dec_a &lt; 0) ? (sum &gt;&gt; -dec_a) : <a class="code" href="namespacearm__compute.xhtml#a203882febb616f5468d1b63b60ffb331">sqshl_qs8</a>(sum, dec_a);</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160;}</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"><a class="line" href="namespacearm__compute.xhtml#a596a7e3c63f80e67ea7cb713e8fc9992"> 192</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#a596a7e3c63f80e67ea7cb713e8fc9992">slog_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a, <span class="keywordtype">int</span> fixed_point_position)</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="comment">// Constants</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> const_one = (1 &lt;&lt; fixed_point_position);</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> ln2 = (0x58 &gt;&gt; (7 - fixed_point_position));</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#a1ce9b523fd4f3b5bbcadcd796183455aa7fc56270e7a70fa81a5935b72eacbe29">A</a> = (0x5C &gt;&gt; (7 - fixed_point_position - 1));</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#a1ce9b523fd4f3b5bbcadcd796183455aa9d5ed678fe57bcca610140957afab571">B</a> = -(0x56 &gt;&gt; (7 - fixed_point_position));</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> C = (0x29 &gt;&gt; (7 - fixed_point_position));</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> D = -(0x0A &gt;&gt; (7 - fixed_point_position));</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">if</span>((const_one == a) || (a &lt; 0))</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; <span class="keywordflow">return</span> 0;</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; <span class="keywordflow">else</span> <span class="keywordflow">if</span>(a &lt; const_one)</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; {</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; <span class="keywordflow">return</span> -<a class="code" href="namespacearm__compute.xhtml#a596a7e3c63f80e67ea7cb713e8fc9992">slog_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#ae39636f0e83dd3b854b89181a230216f">sdiv_qs8</a>(const_one, a, fixed_point_position), fixed_point_position);</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; <span class="comment">// Remove even powers of 2</span></div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> shift_val = 31 - __builtin_clz(a &gt;&gt; fixed_point_position);</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; a &gt;&gt;= shift_val;</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; a = <a class="code" href="namespacearm__compute.xhtml#ab97841950d268532e51f28a208ddafd4">ssub_qs8</a>(a, const_one);</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160;</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; <span class="comment">// Polynomial expansion</span></div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <span class="keyword">auto</span> sum = <a class="code" href="namespacearm__compute.xhtml#a532d90e007d0cb6f3d43107229c40c32">sqadd_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#af0b73b0c4980a551d7cd4edec43ffd92">sqmul_qs8</a>(a, D, fixed_point_position), C);</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; sum = <a class="code" href="namespacearm__compute.xhtml#a532d90e007d0cb6f3d43107229c40c32">sqadd_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#af0b73b0c4980a551d7cd4edec43ffd92">sqmul_qs8</a>(a, sum, fixed_point_position), B);</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; sum = <a class="code" href="namespacearm__compute.xhtml#a532d90e007d0cb6f3d43107229c40c32">sqadd_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#af0b73b0c4980a551d7cd4edec43ffd92">sqmul_qs8</a>(a, sum, fixed_point_position), A);</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; sum = <a class="code" href="namespacearm__compute.xhtml#af0b73b0c4980a551d7cd4edec43ffd92">sqmul_qs8</a>(a, sum, fixed_point_position);</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160;</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespacearm__compute.xhtml#aec48f137adc904d648dd7eba0d828fab">smul_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#aa8cee074ec68e2ae7830a9472efd8429">sadd_qs8</a>(sum, shift_val &lt;&lt; fixed_point_position), ln2, fixed_point_position);</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160;}</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160;</div><div class="line"><a name="l00225"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#a62232512d049619479b670c58a607924"> 225</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">float</span> <a class="code" href="namespacearm__compute.xhtml#a62232512d049619479b670c58a607924">scvt_f32_qs8</a>(<a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> a, <span class="keywordtype">int</span> fixed_point_position)</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160;{</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span><span class="keywordtype">float</span><span class="keyword">&gt;</span>(a) / (1 &lt;&lt; fixed_point_position);</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160;}</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160;</div><div class="line"><a name="l00230"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#a85574c36b0854c1f988a3be4f7db6b6d"> 230</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#a85574c36b0854c1f988a3be4f7db6b6d">scvt_qs8_f32</a>(<span class="keywordtype">float</span> a, <span class="keywordtype">int</span> fixed_point_position)</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160;{</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; <span class="comment">// round_nearest_integer(a * 2^(fixed_point_position))</span></div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span><a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a><span class="keyword">&gt;</span>(<span class="keyword">static_cast&lt;</span><span class="keywordtype">float</span><span class="keyword">&gt;</span>(a) * (1 &lt;&lt; fixed_point_position) + 0.5f);</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160;}</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160;</div><div class="line"><a name="l00236"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#a55e8e161b9a16d750a6cff3fba6cd480"> 236</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">float</span> <a class="code" href="namespacearm__compute.xhtml#a55e8e161b9a16d750a6cff3fba6cd480">scvt_f32_qs16</a>(<a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> a, <span class="keywordtype">int</span> fixed_point_position)</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160;{</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span><span class="keywordtype">float</span><span class="keyword">&gt;</span>(a) / (1 &lt;&lt; fixed_point_position);</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160;}</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160;</div><div class="line"><a name="l00241"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#aacd9632313e7c7341b403155575a48ed"> 241</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#aacd9632313e7c7341b403155575a48ed">scvt_qs16_f32</a>(<span class="keywordtype">float</span> a, <span class="keywordtype">int</span> fixed_point_position)</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160;{</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; <span class="comment">// round_nearest_integer(a * 2^(fixed_point_position))</span></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span><a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a><span class="keyword">&gt;</span>(<span class="keyword">static_cast&lt;</span><span class="keywordtype">float</span><span class="keyword">&gt;</span>(a) * (1 &lt;&lt; fixed_point_position) + 0.5f);</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160;}</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160;</div><div class="line"><a name="l00247"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#ad555b251940cba2ca1c6eb168f0bbea4"> 247</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">qint8_t</a> <a class="code" href="namespacearm__compute.xhtml#ad555b251940cba2ca1c6eb168f0bbea4">sqmovn_qs16</a>(<a class="code" href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">qint16_t</a> a)</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160;{</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; <span class="comment">// Saturate the result in case of overflow and cast to qint8_t</span></div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160; <span class="keywordflow">return</span> saturate_convert&lt;qint16_t, qint8_t&gt;(a);</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160;}</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160;}</div><div class="ttc" id="namespacearm__compute_xhtml_a1ce9b523fd4f3b5bbcadcd796183455aa7fc56270e7a70fa81a5935b72eacbe29"><div class="ttname"><a href="namespacearm__compute.xhtml#a1ce9b523fd4f3b5bbcadcd796183455aa7fc56270e7a70fa81a5935b72eacbe29">arm_compute::Channel::A</a></div><div class="ttdoc">Alpha channel. </div></div>
<div class="ttc" id="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail_xhtml_aabcf39e3917f842dbc5fbb0d802f24d5"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail.xhtml#aabcf39e3917f842dbc5fbb0d802f24d5">arm_compute::test::fixed_point_arithmetic::detail::min</a></div><div class="ttdeci">fixed_point&lt; T &gt; min(fixed_point&lt; T &gt; x, fixed_point&lt; T &gt; y)</div><div class="ttdef"><b>Definition:</b> <a href="tests_2validation_2_fixed_point_8h_source.xhtml#l00875">FixedPoint.h:875</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_aec48f137adc904d648dd7eba0d828fab"><div class="ttname"><a href="namespacearm__compute.xhtml#aec48f137adc904d648dd7eba0d828fab">arm_compute::smul_qs8</a></div><div class="ttdeci">qint8_t smul_qs8(qint8_t a, qint8_t b, int fixed_point_position)</div><div class="ttdoc">8 bit fixed point scalar multiply </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00095">FixedPoint.inl:95</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_ab97841950d268532e51f28a208ddafd4"><div class="ttname"><a href="namespacearm__compute.xhtml#ab97841950d268532e51f28a208ddafd4">arm_compute::ssub_qs8</a></div><div class="ttdeci">qint8_t ssub_qs8(qint8_t a, qint8_t b)</div><div class="ttdoc">8 bit fixed point scalar subtraction </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00081">FixedPoint.inl:81</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a55e8e161b9a16d750a6cff3fba6cd480"><div class="ttname"><a href="namespacearm__compute.xhtml#a55e8e161b9a16d750a6cff3fba6cd480">arm_compute::scvt_f32_qs16</a></div><div class="ttdeci">float scvt_f32_qs16(qint16_t a, int fixed_point_position)</div><div class="ttdoc">Convert a 16 bit fixed point to float. </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00236">FixedPoint.inl:236</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a1ce9b523fd4f3b5bbcadcd796183455aa9d5ed678fe57bcca610140957afab571"><div class="ttname"><a href="namespacearm__compute.xhtml#a1ce9b523fd4f3b5bbcadcd796183455aa9d5ed678fe57bcca610140957afab571">arm_compute::Channel::B</a></div><div class="ttdoc">Blue channel. </div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a62232512d049619479b670c58a607924"><div class="ttname"><a href="namespacearm__compute.xhtml#a62232512d049619479b670c58a607924">arm_compute::scvt_f32_qs8</a></div><div class="ttdeci">float scvt_f32_qs8(qint8_t a, int fixed_point_position)</div><div class="ttdoc">Convert an 8 bit fixed point to float. </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00225">FixedPoint.inl:225</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml"><div class="ttname"><a href="namespacearm__compute.xhtml">arm_compute</a></div><div class="ttdef"><b>Definition:</b> <a href="01__library_8dox_source.xhtml#l00001">01_library.dox:1</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a85574c36b0854c1f988a3be4f7db6b6d"><div class="ttname"><a href="namespacearm__compute.xhtml#a85574c36b0854c1f988a3be4f7db6b6d">arm_compute::scvt_qs8_f32</a></div><div class="ttdeci">qint8_t scvt_qs8_f32(float a, int fixed_point_position)</div><div class="ttdoc">Convert a float to 8 bit fixed point. </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00230">FixedPoint.inl:230</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a6458ccaf13f1c225d6b60672754f2c72"><div class="ttname"><a href="namespacearm__compute.xhtml#a6458ccaf13f1c225d6b60672754f2c72">arm_compute::sqexp_qs8</a></div><div class="ttdeci">qint8_t sqexp_qs8(qint8_t a, int fixed_point_position)</div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00169">FixedPoint.inl:169</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_aa8cee074ec68e2ae7830a9472efd8429"><div class="ttname"><a href="namespacearm__compute.xhtml#aa8cee074ec68e2ae7830a9472efd8429">arm_compute::sadd_qs8</a></div><div class="ttdeci">qint8_t sadd_qs8(qint8_t a, qint8_t b)</div><div class="ttdoc">8 bit fixed point scalar add </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00058">FixedPoint.inl:58</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_ae39636f0e83dd3b854b89181a230216f"><div class="ttname"><a href="namespacearm__compute.xhtml#ae39636f0e83dd3b854b89181a230216f">arm_compute::sdiv_qs8</a></div><div class="ttdeci">qint8_t sdiv_qs8(qint8_t a, qint8_t b, int fixed_point_position)</div><div class="ttdoc">8 bit fixed point scalar division </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00163">FixedPoint.inl:163</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a203882febb616f5468d1b63b60ffb331"><div class="ttname"><a href="namespacearm__compute.xhtml#a203882febb616f5468d1b63b60ffb331">arm_compute::sqshl_qs8</a></div><div class="ttdeci">qint8_t sqshl_qs8(qint8_t a, int shift)</div><div class="ttdoc">8 bit fixed point scalar saturating shift left </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00046">FixedPoint.inl:46</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_aa06c95f9976f3729316d689b4419089f"><div class="ttname"><a href="namespacearm__compute.xhtml#aa06c95f9976f3729316d689b4419089f">arm_compute::qint32_t</a></div><div class="ttdeci">int32_t qint32_t</div><div class="ttdoc">32 bit fixed point scalar value </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_fixed_point_8h_source.xhtml#l00031">FixedPoint.h:31</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a1521eea74b97de8f2df9304e44179400"><div class="ttname"><a href="namespacearm__compute.xhtml#a1521eea74b97de8f2df9304e44179400">arm_compute::qint16_t</a></div><div class="ttdeci">int16_t qint16_t</div><div class="ttdoc">16 bit fixed point scalar value </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_fixed_point_8h_source.xhtml#l00030">FixedPoint.h:30</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a45669fcc0f31fce521179510e85dcb62"><div class="ttname"><a href="namespacearm__compute.xhtml#a45669fcc0f31fce521179510e85dcb62">arm_compute::sqadd_qs16</a></div><div class="ttdeci">qint16_t sqadd_qs16(qint16_t a, qint16_t b)</div><div class="ttdoc">16 bit fixed point scalar saturating add </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00072">FixedPoint.inl:72</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_ae74bbb6e25cc1b774428722b2faad00c"><div class="ttname"><a href="namespacearm__compute.xhtml#ae74bbb6e25cc1b774428722b2faad00c">arm_compute::sqsub_qs8</a></div><div class="ttdeci">qint8_t sqsub_qs8(qint8_t a, qint8_t b)</div><div class="ttdoc">8 bit fixed point scalar saturating subtraction </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00086">FixedPoint.inl:86</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a0721e062e6d7a90f07fd08aeda5e7eda"><div class="ttname"><a href="namespacearm__compute.xhtml#a0721e062e6d7a90f07fd08aeda5e7eda">arm_compute::sqmull_qs8</a></div><div class="ttdeci">qint16_t sqmull_qs8(qint8_t a, qint8_t b, int fixed_point_position)</div><div class="ttdoc">8 bit fixed point scalar multiply long </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00131">FixedPoint.inl:131</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_ad555b251940cba2ca1c6eb168f0bbea4"><div class="ttname"><a href="namespacearm__compute.xhtml#ad555b251940cba2ca1c6eb168f0bbea4">arm_compute::sqmovn_qs16</a></div><div class="ttdeci">qint8_t sqmovn_qs16(qint16_t a)</div><div class="ttdoc">Scalar saturating move and narrow. </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00247">FixedPoint.inl:247</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_af0b73b0c4980a551d7cd4edec43ffd92"><div class="ttname"><a href="namespacearm__compute.xhtml#af0b73b0c4980a551d7cd4edec43ffd92">arm_compute::sqmul_qs8</a></div><div class="ttdeci">qint8_t sqmul_qs8(qint8_t a, qint8_t b, int fixed_point_position)</div><div class="ttdoc">8 bit fixed point scalar saturating multiply </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00107">FixedPoint.inl:107</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a596a7e3c63f80e67ea7cb713e8fc9992"><div class="ttname"><a href="namespacearm__compute.xhtml#a596a7e3c63f80e67ea7cb713e8fc9992">arm_compute::slog_qs8</a></div><div class="ttdeci">qint8_t slog_qs8(qint8_t a, int fixed_point_position)</div><div class="ttdoc">8 bit fixed point scalar logarithm </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00192">FixedPoint.inl:192</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a4c3f681c30c9398c45bc3cd5dc4f038a"><div class="ttname"><a href="namespacearm__compute.xhtml#a4c3f681c30c9398c45bc3cd5dc4f038a">arm_compute::qint8_t</a></div><div class="ttdeci">int8_t qint8_t</div><div class="ttdoc">8 bit fixed point scalar value </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_fixed_point_8h_source.xhtml#l00029">FixedPoint.h:29</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_ab768d7001612a149c0bf695b773d659b"><div class="ttname"><a href="namespacearm__compute.xhtml#ab768d7001612a149c0bf695b773d659b">arm_compute::sinvsqrt_qs8</a></div><div class="ttdeci">qint8_t sinvsqrt_qs8(qint8_t a, int fixed_point_position)</div><div class="ttdoc">8 bit fixed point scalar inverse square root </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00143">FixedPoint.inl:143</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_aacd9632313e7c7341b403155575a48ed"><div class="ttname"><a href="namespacearm__compute.xhtml#aacd9632313e7c7341b403155575a48ed">arm_compute::scvt_qs16_f32</a></div><div class="ttdeci">qint8_t scvt_qs16_f32(float a, int fixed_point_position)</div><div class="ttdoc">Convert a float to 16 bit fixed point. </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00241">FixedPoint.inl:241</a></div></div>
<div class="ttc" id="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail_xhtml_ad91bb73431b4de1f4946ed949d444849"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail.xhtml#ad91bb73431b4de1f4946ed949d444849">arm_compute::test::fixed_point_arithmetic::detail::max</a></div><div class="ttdeci">fixed_point&lt; T &gt; max(fixed_point&lt; T &gt; x, fixed_point&lt; T &gt; y)</div><div class="ttdef"><b>Definition:</b> <a href="tests_2validation_2_fixed_point_8h_source.xhtml#l00880">FixedPoint.h:880</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a43315c66c4d00207f70143233b189085"><div class="ttname"><a href="namespacearm__compute.xhtml#a43315c66c4d00207f70143233b189085">arm_compute::sabs_qs8</a></div><div class="ttdeci">qint8_t sabs_qs8(qint8_t a)</div><div class="ttdoc">8 bit fixed point scalar absolute value </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00053">FixedPoint.inl:53</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a532d90e007d0cb6f3d43107229c40c32"><div class="ttname"><a href="namespacearm__compute.xhtml#a532d90e007d0cb6f3d43107229c40c32">arm_compute::sqadd_qs8</a></div><div class="ttdeci">qint8_t sqadd_qs8(qint8_t a, qint8_t b)</div><div class="ttdoc">8 bit fixed point scalar saturating add </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00063">FixedPoint.inl:63</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a55c8a365b4242664f8c0f19e91bcee92"><div class="ttname"><a href="namespacearm__compute.xhtml#a55c8a365b4242664f8c0f19e91bcee92">arm_compute::sqmul_qs16</a></div><div class="ttdeci">qint16_t sqmul_qs16(qint16_t a, qint16_t b, int fixed_point_position)</div><div class="ttdoc">16 bit fixed point scalar saturating multiply </div><div class="ttdef"><b>Definition:</b> <a href="_fixed_point_8inl_source.xhtml#l00119">FixedPoint.inl:119</a></div></div>
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