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 112
 113 <div class="header">
 114   <div class="headertitle">
 115 <div class="title">NEMath.h</div>  </div>
 116 </div><!--header-->
 117 <div class="contents">
 118 <a href="_n_e_math_8h.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>
 119 <div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) 2016, 2017 ARM Limited.</span></div>
 120 <div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *</span></div>
 121 <div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * SPDX-License-Identifier: MIT</span></div>
 122 <div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div>
 123 <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>
 124 <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>
 125 <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>
 126 <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>
 127 <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>
 128 <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>
 129 <div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> *</span></div>
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 131 <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>
 132 <div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> *</span></div>
 133 <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>
 134 <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>
 135 <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>
 136 <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>
 137 <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>
 138 <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>
 139 <div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"> * SOFTWARE.</span></div>
 140 <div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment"> */</span></div>
 141 <div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#ifndef __ARM_COMPUTE_NEMATH_H__</span></div>
 142 <div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define __ARM_COMPUTE_NEMATH_H__</span></div>
 143 <div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor"></span></div>
 144 <div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &lt;arm_neon.h&gt;</span></div>
 145 <div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div>
 146 <div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="keyword">namespace </span>arm_compute</div>
 147 <div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;{</div>
 148 <div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;float32x4_t <a class="code" href="namespacearm__compute.xhtml#adb7ad6f2d80bafc0a8fb0c920909b9fb">vfloorq_f32</a>(float32x4_t val);</div>
 149 <div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;</div>
 150 <div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;float32x2_t <a class="code" href="namespacearm__compute.xhtml#a902d274ff1dbe2052b0f2364a98d2b41">vinvsqrt_f32</a>(float32x2_t x);</div>
 151 <div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;</div>
 152 <div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;float32x4_t <a class="code" href="namespacearm__compute.xhtml#a2e27db6b9692c4c2013653e276af654d">vinvsqrtq_f32</a>(float32x4_t x);</div>
 153 <div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div>
 154 <div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;float32x2_t <a class="code" href="namespacearm__compute.xhtml#a7bb067c606cdc07805181688b9bee569">vinv_f32</a>(float32x2_t x);</div>
 155 <div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;</div>
 156 <div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;float32x4_t <a class="code" href="namespacearm__compute.xhtml#ac8f459d5899b79c00fb4042a5b3470fb">vinvq_f32</a>(float32x4_t x);</div>
 157 <div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;</div>
 158 <div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;float32x4_t <a class="code" href="namespacearm__compute.xhtml#a4fa76a98dce5ed1b655ff840f2ce6e57">vtaylor_polyq_f32</a>(float32x4_t x, <span class="keyword">const</span> std::array&lt;float32x4_t, 8&gt; &amp;coeffs);</div>
 159 <div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div>
 160 <div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;float32x4_t <a class="code" href="namespacearm__compute.xhtml#ade3ef16de304661943c900ac9a47d28f">vexpq_f32</a>(float32x4_t x);</div>
 161 <div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;</div>
 162 <div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;float32x4_t <a class="code" href="namespacearm__compute.xhtml#a37a3e03a22ad160a2e9e5c133607e020">vlogq_f32</a>(float32x4_t x);</div>
 163 <div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;</div>
 164 <div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;float32x4_t <a class="code" href="namespacearm__compute.xhtml#a7845701adefdb1adafc98ca3c4918c2e">vtanhq_f32</a>(float32x4_t val);</div>
 165 <div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;</div>
 166 <div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;float32x4_t <a class="code" href="namespacearm__compute.xhtml#a45c3c1474c3e3ec31ec13efaf6acd261">vpowq_f32</a>(float32x4_t val, float32x4_t n);</div>
 167 <div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;</div>
 168 <div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="preprocessor">#ifdef ARM_COMPUTE_ENABLE_FP16</span></div>
 169 <div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="preprocessor"></span></div>
 170 <div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;float16x8_t <a class="code" href="namespacearm__compute.xhtml#a841e85dc31bee3fa3f1855eabf895325">vtanhq_f16</a>(float16x8_t val);</div>
 171 <div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;</div>
 172 <div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;float16x4_t <a class="code" href="namespacearm__compute.xhtml#aba029f555d1868e560b8a278bdf87341">vinv_f16</a>(float16x4_t x);</div>
 173 <div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;</div>
 174 <div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;float16x8_t <a class="code" href="namespacearm__compute.xhtml#a5ccd23ffe952767d73334cabcdbff246">vinvq_f16</a>(float16x8_t x);</div>
 175 <div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;</div>
 176 <div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;float16x4_t <a class="code" href="namespacearm__compute.xhtml#ab74b7f62070607d8dfb02364664d7867">vinvsqrt_f16</a>(float16x4_t x);</div>
 177 <div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;</div>
 178 <div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;float16x8_t <a class="code" href="namespacearm__compute.xhtml#a78ef1abe4de2152c366a40f638f7fb91">vinvsqrtq_f16</a>(float16x8_t x);</div>
 179 <div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;</div>
 180 <div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;float16x8_t <a class="code" href="namespacearm__compute.xhtml#a829992d2c673006879696821024df5b7">vexpq_f16</a>(float16x8_t x);</div>
 181 <div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;</div>
 182 <div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;float16x8_t <a class="code" href="namespacearm__compute.xhtml#a0b601c13358a452569202d3fb718963d">vpowq_f16</a>(float16x8_t val, float16x8_t n);</div>
 183 <div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* ARM_COMPUTE_ENABLE_FP16 */</span><span class="preprocessor"></span></div>
 184 <div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;<span class="preprocessor"></span>} <span class="comment">// namespace arm_compute</span></div>
 185 <div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_n_e_math_8inl.xhtml">arm_compute/core/NEON/NEMath.inl</a>&quot;</span></div>
 186 <div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* __ARM_COMPUTE_NEMATH_H__ */</span><span class="preprocessor"></span></div>
 187 <div class="ttc" id="namespacearm__compute_xhtml_ade3ef16de304661943c900ac9a47d28f"><div class="ttname"><a href="namespacearm__compute.xhtml#ade3ef16de304661943c900ac9a47d28f">arm_compute::vexpq_f32</a></div><div class="ttdeci">float32x4_t vexpq_f32(float32x4_t x)</div><div class="ttdoc">Calculate exponential. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00113">NEMath.inl:113</a></div></div>
 188 <div class="ttc" id="namespacearm__compute_xhtml_a829992d2c673006879696821024df5b7"><div class="ttname"><a href="namespacearm__compute.xhtml#a829992d2c673006879696821024df5b7">arm_compute::vexpq_f16</a></div><div class="ttdeci">float16x8_t vexpq_f16(float16x8_t x)</div><div class="ttdoc">Calculate exponential. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00261">NEMath.inl:261</a></div></div>
 189 <div class="ttc" id="namespacearm__compute_xhtml_a45c3c1474c3e3ec31ec13efaf6acd261"><div class="ttname"><a href="namespacearm__compute.xhtml#a45c3c1474c3e3ec31ec13efaf6acd261">arm_compute::vpowq_f32</a></div><div class="ttdeci">float32x4_t vpowq_f32(float32x4_t val, float32x4_t n)</div><div class="ttdoc">Calculate n power of a number. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00167">NEMath.inl:167</a></div></div>
 190 <div class="ttc" id="namespacearm__compute_xhtml_a7845701adefdb1adafc98ca3c4918c2e"><div class="ttname"><a href="namespacearm__compute.xhtml#a7845701adefdb1adafc98ca3c4918c2e">arm_compute::vtanhq_f32</a></div><div class="ttdeci">float32x4_t vtanhq_f32(float32x4_t val)</div><div class="ttdoc">Calculate hyperbolic tangent. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00152">NEMath.inl:152</a></div></div>
 191 <div class="ttc" id="namespacearm__compute_xhtml_ab74b7f62070607d8dfb02364664d7867"><div class="ttname"><a href="namespacearm__compute.xhtml#ab74b7f62070607d8dfb02364664d7867">arm_compute::vinvsqrt_f16</a></div><div class="ttdeci">float16x4_t vinvsqrt_f16(float16x4_t x)</div><div class="ttdoc">Calculate inverse square root. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00202">NEMath.inl:202</a></div></div>
 192 <div class="ttc" id="namespacearm__compute_xhtml_a0b601c13358a452569202d3fb718963d"><div class="ttname"><a href="namespacearm__compute.xhtml#a0b601c13358a452569202d3fb718963d">arm_compute::vpowq_f16</a></div><div class="ttdeci">float16x8_t vpowq_f16(float16x8_t val, float16x8_t n)</div><div class="ttdoc">Calculate n power of a number. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00300">NEMath.inl:300</a></div></div>
 193 <div class="ttc" id="namespacearm__compute_xhtml_a902d274ff1dbe2052b0f2364a98d2b41"><div class="ttname"><a href="namespacearm__compute.xhtml#a902d274ff1dbe2052b0f2364a98d2b41">arm_compute::vinvsqrt_f32</a></div><div class="ttdeci">float32x2_t vinvsqrt_f32(float32x2_t x)</div><div class="ttdoc">Calculate inverse square root. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00067">NEMath.inl:67</a></div></div>
 194 <div class="ttc" id="namespacearm__compute_xhtml_a37a3e03a22ad160a2e9e5c133607e020"><div class="ttname"><a href="namespacearm__compute.xhtml#a37a3e03a22ad160a2e9e5c133607e020">arm_compute::vlogq_f32</a></div><div class="ttdeci">float32x4_t vlogq_f32(float32x4_t x)</div><div class="ttdoc">Calculate logarithm. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00134">NEMath.inl:134</a></div></div>
 195 <div class="ttc" id="namespacearm__compute_xhtml_adb7ad6f2d80bafc0a8fb0c920909b9fb"><div class="ttname"><a href="namespacearm__compute.xhtml#adb7ad6f2d80bafc0a8fb0c920909b9fb">arm_compute::vfloorq_f32</a></div><div class="ttdeci">float32x4_t vfloorq_f32(float32x4_t val)</div><div class="ttdoc">Calculate floor of a vector. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00057">NEMath.inl:57</a></div></div>
 196 <div class="ttc" id="namespacearm__compute_xhtml_a78ef1abe4de2152c366a40f638f7fb91"><div class="ttname"><a href="namespacearm__compute.xhtml#a78ef1abe4de2152c366a40f638f7fb91">arm_compute::vinvsqrtq_f16</a></div><div class="ttdeci">float16x8_t vinvsqrtq_f16(float16x8_t x)</div><div class="ttdoc">Calculate inverse square root. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00210">NEMath.inl:210</a></div></div>
 197 <div class="ttc" id="_n_e_math_8inl_xhtml"><div class="ttname"><a href="_n_e_math_8inl.xhtml">NEMath.inl</a></div></div>
 198 <div class="ttc" id="namespacearm__compute_xhtml_ac8f459d5899b79c00fb4042a5b3470fb"><div class="ttname"><a href="namespacearm__compute.xhtml#ac8f459d5899b79c00fb4042a5b3470fb">arm_compute::vinvq_f32</a></div><div class="ttdeci">float32x4_t vinvq_f32(float32x4_t x)</div><div class="ttdoc">Calculate reciprocal. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00093">NEMath.inl:93</a></div></div>
 199 <div class="ttc" id="namespacearm__compute_xhtml_a7bb067c606cdc07805181688b9bee569"><div class="ttname"><a href="namespacearm__compute.xhtml#a7bb067c606cdc07805181688b9bee569">arm_compute::vinv_f32</a></div><div class="ttdeci">float32x2_t vinv_f32(float32x2_t x)</div><div class="ttdoc">Calculate reciprocal. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00085">NEMath.inl:85</a></div></div>
 200 <div class="ttc" id="namespacearm__compute_xhtml_aba029f555d1868e560b8a278bdf87341"><div class="ttname"><a href="namespacearm__compute.xhtml#aba029f555d1868e560b8a278bdf87341">arm_compute::vinv_f16</a></div><div class="ttdeci">float16x4_t vinv_f16(float16x4_t x)</div><div class="ttdoc">Calculate reciprocal. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00218">NEMath.inl:218</a></div></div>
 201 <div class="ttc" id="namespacearm__compute_xhtml_a4fa76a98dce5ed1b655ff840f2ce6e57"><div class="ttname"><a href="namespacearm__compute.xhtml#a4fa76a98dce5ed1b655ff840f2ce6e57">arm_compute::vtaylor_polyq_f32</a></div><div class="ttdeci">float32x4_t vtaylor_polyq_f32(float32x4_t x, const std::array&lt; float32x4_t, 8 &gt; &amp;coeffs)</div><div class="ttdoc">Perform a 7th degree polynomial approximation using Estrin&#39;s method. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00101">NEMath.inl:101</a></div></div>
 202 <div class="ttc" id="namespacearm__compute_xhtml_a5ccd23ffe952767d73334cabcdbff246"><div class="ttname"><a href="namespacearm__compute.xhtml#a5ccd23ffe952767d73334cabcdbff246">arm_compute::vinvq_f16</a></div><div class="ttdeci">float16x8_t vinvq_f16(float16x8_t x)</div><div class="ttdoc">Calculate reciprocal. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00226">NEMath.inl:226</a></div></div>
 203 <div class="ttc" id="namespacearm__compute_xhtml_a2e27db6b9692c4c2013653e276af654d"><div class="ttname"><a href="namespacearm__compute.xhtml#a2e27db6b9692c4c2013653e276af654d">arm_compute::vinvsqrtq_f32</a></div><div class="ttdeci">float32x4_t vinvsqrtq_f32(float32x4_t x)</div><div class="ttdoc">Calculate inverse square root. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00076">NEMath.inl:76</a></div></div>
 204 <div class="ttc" id="namespacearm__compute_xhtml_a841e85dc31bee3fa3f1855eabf895325"><div class="ttname"><a href="namespacearm__compute.xhtml#a841e85dc31bee3fa3f1855eabf895325">arm_compute::vtanhq_f16</a></div><div class="ttdeci">float16x8_t vtanhq_f16(float16x8_t val)</div><div class="ttdoc">Calculate hyperbolic tangent. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00234">NEMath.inl:234</a></div></div>
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