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 120 <a href="_n_e_math_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) 2016-2018 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;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacearm__compute.xhtml">arm_compute</a></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;{</div><div class="line"><a name="l00028"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#a869945609357fa552d94eb16f7aad4e9">   28</a></span>&#160;<span class="keyword">const</span> std::array&lt;float32x4_t, 8&gt; <a class="code" href="namespacearm__compute.xhtml#a869945609357fa552d94eb16f7aad4e9">exp_tab</a> =</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;{</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    {</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;        vdupq_n_f32(1.f),</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;        vdupq_n_f32(0.0416598916054f),</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;        vdupq_n_f32(0.500000596046f),</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;        vdupq_n_f32(0.0014122662833f),</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;        vdupq_n_f32(1.00000011921f),</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;        vdupq_n_f32(0.00833693705499f),</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;        vdupq_n_f32(0.166665703058f),</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;        vdupq_n_f32(0.000195780929062f),</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;};</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="namespacearm__compute.xhtml#a48fb9cf404e8f7043235bf14105c9793">   43</a></span>&#160;<span class="keyword">const</span> std::array&lt;float32x4_t, 8&gt; <a class="code" href="namespacearm__compute.xhtml#a48fb9cf404e8f7043235bf14105c9793">log_tab</a> =</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;{</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    {</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;        vdupq_n_f32(-2.29561495781f),</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;        vdupq_n_f32(-2.47071170807f),</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;        vdupq_n_f32(-5.68692588806f),</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;        vdupq_n_f32(-0.165253549814f),</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;        vdupq_n_f32(5.17591238022f),</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;        vdupq_n_f32(0.844007015228f),</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;        vdupq_n_f32(4.58445882797f),</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;        vdupq_n_f32(0.0141278216615f),</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;};</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;<span class="preprocessor">#ifndef DOXYGEN_SKIP_THIS</span></div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="keyword">inline</span> float32x4_t <a class="code" href="namespacearm__compute.xhtml#af7a0f3e622aa4bc8c6077d2262a04e2e">vfloorq_f32</a>(float32x4_t val)</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="keyword">static</span> <span class="keyword">const</span> float32x4_t CONST_1 = vdupq_n_f32(1.f);</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;    <span class="keyword">const</span> int32x4_t   z = vcvtq_s32_f32(val);</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    <span class="keyword">const</span> float32x4_t r = vcvtq_f32_s32(z);</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="keywordflow">return</span> vbslq_f32(vcgtq_f32(r, val), vsubq_f32(r, CONST_1), r);</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;}</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="keyword">inline</span> float32x2_t <a class="code" href="namespacearm__compute.xhtml#afc415e7fc5e633a0b85b08b2bba5b5cf">vinvsqrt_f32</a>(float32x2_t x)</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;{</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    float32x2_t sqrt_reciprocal = vrsqrte_f32(x);</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    sqrt_reciprocal             = vmul_f32(vrsqrts_f32(vmul_f32(x, sqrt_reciprocal), sqrt_reciprocal), sqrt_reciprocal);</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    sqrt_reciprocal             = vmul_f32(vrsqrts_f32(vmul_f32(x, sqrt_reciprocal), sqrt_reciprocal), sqrt_reciprocal);</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="keywordflow">return</span> sqrt_reciprocal;</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;}</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="keyword">inline</span> float32x4_t <a class="code" href="namespacearm__compute.xhtml#ab8970d7aed07d8649f5e3088455948b8">vinvsqrtq_f32</a>(float32x4_t x)</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;{</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    float32x4_t sqrt_reciprocal = vrsqrteq_f32(x);</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    sqrt_reciprocal             = vmulq_f32(vrsqrtsq_f32(vmulq_f32(x, sqrt_reciprocal), sqrt_reciprocal), sqrt_reciprocal);</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    sqrt_reciprocal             = vmulq_f32(vrsqrtsq_f32(vmulq_f32(x, sqrt_reciprocal), sqrt_reciprocal), sqrt_reciprocal);</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> sqrt_reciprocal;</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">   86</span>&#160;<span class="keyword">inline</span> float32x2_t <a class="code" href="namespacearm__compute.xhtml#acc6fd1bcd12ef1141e15401a04d31187">vinv_f32</a>(float32x2_t x)</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;    float32x2_t recip = vrecpe_f32(x);</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    recip             = vmul_f32(vrecps_f32(x, recip), recip);</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    recip             = vmul_f32(vrecps_f32(x, recip), recip);</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    <span class="keywordflow">return</span> recip;</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;}</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="keyword">inline</span> float32x4_t <a class="code" href="namespacearm__compute.xhtml#a2e0f2412b4d1302272d1aeb85d21ab25">vinvq_f32</a>(float32x4_t x)</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;{</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;    float32x4_t recip = vrecpeq_f32(x);</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    recip             = vmulq_f32(vrecpsq_f32(x, recip), recip);</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    recip             = vmulq_f32(vrecpsq_f32(x, recip), recip);</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    <span class="keywordflow">return</span> recip;</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;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;<span class="keyword">inline</span> float32x4_t <a class="code" href="namespacearm__compute.xhtml#a0c10bb00a86edd8d0cd4c33b494f6cd4">vtaylor_polyq_f32</a>(float32x4_t x, <span class="keyword">const</span> std::array&lt;float32x4_t, 8&gt; &amp;coeffs)</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;    float32x4_t <a class="code" href="namespacearm__compute.xhtml#a1ce9b523fd4f3b5bbcadcd796183455aa7fc56270e7a70fa81a5935b72eacbe29">A</a>   = vmlaq_f32(coeffs[0], coeffs[4], x);</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    float32x4_t <a class="code" href="namespacearm__compute.xhtml#a1ce9b523fd4f3b5bbcadcd796183455aa9d5ed678fe57bcca610140957afab571">B</a>   = vmlaq_f32(coeffs[2], coeffs[6], x);</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;    float32x4_t C   = vmlaq_f32(coeffs[1], coeffs[5], x);</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;    float32x4_t D   = vmlaq_f32(coeffs[3], coeffs[7], x);</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    float32x4_t x2  = vmulq_f32(x, x);</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    float32x4_t x4  = vmulq_f32(x2, x2);</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    float32x4_t res = vmlaq_f32(vmlaq_f32(A, B, x2), vmlaq_f32(C, D, x2), x4);</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    <span class="keywordflow">return</span> res;</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;</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;<span class="keyword">inline</span> float32x4_t <a class="code" href="namespacearm__compute.xhtml#ab55486f1153a4c5f507d4923b59fc6a0">vexpq_f32</a>(float32x4_t x)</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="keyword">static</span> <span class="keyword">const</span> float32x4_t CONST_LN2          = vdupq_n_f32(0.6931471805f); <span class="comment">// ln(2)</span></div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> float32x4_t CONST_INV_LN2      = vdupq_n_f32(1.4426950408f); <span class="comment">// 1/ln(2)</span></div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> float32x4_t CONST_0            = vdupq_n_f32(0.f);</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> int32x4_t   CONST_NEGATIVE_126 = vdupq_n_s32(-126);</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="comment">// Perform range reduction [-log(2),log(2)]</span></div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    int32x4_t   m   = vcvtq_s32_f32(vmulq_f32(x, CONST_INV_LN2));</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    float32x4_t val = vmlsq_f32(x, vcvtq_f32_s32(m), CONST_LN2);</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">// Polynomial Approximation</span></div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    float32x4_t poly = <a class="code" href="namespacearm__compute.xhtml#a0c10bb00a86edd8d0cd4c33b494f6cd4">vtaylor_polyq_f32</a>(val, exp_tab);</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="comment">// Reconstruct</span></div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    poly = vreinterpretq_f32_s32(vqaddq_s32(vreinterpretq_s32_f32(poly), vqshlq_n_s32(m, 23)));</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;    poly = vbslq_f32(vcltq_s32(m, CONST_NEGATIVE_126), CONST_0, poly);</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    <span class="keywordflow">return</span> poly;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;}</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="keyword">inline</span> float32x4_t <a class="code" href="namespacearm__compute.xhtml#a1d090b80b655e7f8fd8977bb93808b04">vlogq_f32</a>(float32x4_t x)</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="keyword">static</span> <span class="keyword">const</span> int32x4_t   CONST_127 = vdupq_n_s32(127);           <span class="comment">// 127</span></div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> float32x4_t CONST_LN2 = vdupq_n_f32(0.6931471805f); <span class="comment">// ln(2)</span></div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;    <span class="comment">// Extract exponent</span></div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    int32x4_t   m   = vsubq_s32(vreinterpretq_s32_u32(vshrq_n_u32(vreinterpretq_u32_f32(x), 23)), CONST_127);</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    float32x4_t val = vreinterpretq_f32_s32(vsubq_s32(vreinterpretq_s32_f32(x), vshlq_n_s32(m, 23)));</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    <span class="comment">// Polynomial Approximation</span></div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    float32x4_t poly = <a class="code" href="namespacearm__compute.xhtml#a0c10bb00a86edd8d0cd4c33b494f6cd4">vtaylor_polyq_f32</a>(val, log_tab);</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;    <span class="comment">// Reconstruct</span></div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;    poly = vmlaq_f32(poly, vcvtq_f32_s32(m), CONST_LN2);</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;    <span class="keywordflow">return</span> poly;</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;}</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;<span class="keyword">inline</span> float32x4_t <a class="code" href="namespacearm__compute.xhtml#a3e59419da344d02daca9c5b274a1da45">vtanhq_f32</a>(float32x4_t val)</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;{</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> float32x4_t CONST_1        = vdupq_n_f32(1.f);</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> float32x4_t CONST_2        = vdupq_n_f32(2.f);</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> float32x4_t CONST_MIN_TANH = vdupq_n_f32(-10.f);</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> float32x4_t CONST_MAX_TANH = vdupq_n_f32(10.f);</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;    float32x4_t x     = vminq_f32(vmaxq_f32(val, CONST_MIN_TANH), CONST_MAX_TANH);</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    float32x4_t exp2x = <a class="code" href="namespacearm__compute.xhtml#ab55486f1153a4c5f507d4923b59fc6a0">vexpq_f32</a>(vmulq_f32(CONST_2, x));</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    float32x4_t num   = vsubq_f32(exp2x, CONST_1);</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    float32x4_t den   = vaddq_f32(exp2x, CONST_1);</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    float32x4_t <a class="code" href="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail.xhtml#a6854479935f66029852441b051e1a3e0">tanh</a>  = vmulq_f32(num, <a class="code" href="namespacearm__compute.xhtml#a2e0f2412b4d1302272d1aeb85d21ab25">vinvq_f32</a>(den));</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail.xhtml#a6854479935f66029852441b051e1a3e0">tanh</a>;</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;}</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;<span class="keyword">inline</span> float32x4_t <a class="code" href="namespacearm__compute.xhtml#aa6465367a67af2bae4ca46750231dae0">vpowq_f32</a>(float32x4_t val, float32x4_t n)</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;{</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="namespacearm__compute.xhtml#ab55486f1153a4c5f507d4923b59fc6a0">vexpq_f32</a>(vmulq_f32(n, <a class="code" href="namespacearm__compute.xhtml#a1d090b80b655e7f8fd8977bb93808b04">vlogq_f32</a>(val)));</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;}</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* DOXYGEN_SKIP_THIS */</span><span class="preprocessor"></span></div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;<span class="preprocessor">#ifdef __ARM_FEATURE_FP16_VECTOR_ARITHMETIC</span></div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;<span class="keyword">const</span> std::array&lt;float16x8_t, 8&gt; exp_tab_f16 =</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;{</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    {</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;        vdupq_n_f16(1.f),</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;        vdupq_n_f16(0.0416598916054f),</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;        vdupq_n_f16(0.500000596046f),</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;        vdupq_n_f16(0.0014122662833f),</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;        vdupq_n_f16(1.00000011921f),</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;        vdupq_n_f16(0.00833693705499f),</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;        vdupq_n_f16(0.166665703058f),</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;        vdupq_n_f16(0.000195780929062f),</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    }</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;</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;<span class="keyword">const</span> std::array&lt;float16x8_t, 8&gt; log_tab_f16 =</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;{</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;        vdupq_n_f16(-2.29561495781f),</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;        vdupq_n_f16(-2.47071170807f),</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;        vdupq_n_f16(-5.68692588806f),</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;        vdupq_n_f16(-0.165253549814f),</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;        vdupq_n_f16(5.17591238022f),</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;        vdupq_n_f16(0.844007015228f),</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;        vdupq_n_f16(4.58445882797f),</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;        vdupq_n_f16(0.0141278216615f),</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    }</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;</div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;<span class="preprocessor">#ifndef DOXYGEN_SKIP_THIS</span></div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;<span class="keyword">inline</span> float16x4_t vinvsqrt_f16(float16x4_t x)</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;    float16x4_t sqrt_reciprocal = vrsqrte_f16(x);</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;    sqrt_reciprocal             = vmul_f16(vrsqrts_f16(vmul_f16(x, sqrt_reciprocal), sqrt_reciprocal), sqrt_reciprocal);</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;    sqrt_reciprocal             = vmul_f16(vrsqrts_f16(vmul_f16(x, sqrt_reciprocal), sqrt_reciprocal), sqrt_reciprocal);</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;    <span class="keywordflow">return</span> sqrt_reciprocal;</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;}</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;</div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;<span class="keyword">inline</span> float16x8_t vinvsqrtq_f16(float16x8_t x)</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;    float16x8_t sqrt_reciprocal = vrsqrteq_f16(x);</div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;    sqrt_reciprocal             = vmulq_f16(vrsqrtsq_f16(vmulq_f16(x, sqrt_reciprocal), sqrt_reciprocal), sqrt_reciprocal);</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;    sqrt_reciprocal             = vmulq_f16(vrsqrtsq_f16(vmulq_f16(x, sqrt_reciprocal), sqrt_reciprocal), sqrt_reciprocal);</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;    <span class="keywordflow">return</span> sqrt_reciprocal;</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;}</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;<span class="keyword">inline</span> float16x4_t vinv_f16(float16x4_t x)</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;    float16x4_t recip = vrecpe_f16(x);</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;    recip             = vmul_f16(vrecps_f16(x, recip), recip);</div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;    recip             = vmul_f16(vrecps_f16(x, recip), recip);</div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    <span class="keywordflow">return</span> recip;</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">  230</span>&#160;<span class="keyword">inline</span> float16x8_t vinvq_f16(float16x8_t x)</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;    float16x8_t recip = vrecpeq_f16(x);</div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;    recip             = vmulq_f16(vrecpsq_f16(x, recip), recip);</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    recip             = vmulq_f16(vrecpsq_f16(x, recip), recip);</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;    <span class="keywordflow">return</span> recip;</div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;}</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="keyword">inline</span> float16x8_t vtanhq_f16(float16x8_t val)</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;    <span class="keyword">const</span> float16x8_t CONST_1        = vdupq_n_f16(1.f);</div><div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;    <span class="keyword">const</span> float16x8_t CONST_2        = vdupq_n_f16(2.f);</div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;    <span class="keyword">const</span> float16x8_t CONST_MIN_TANH = vdupq_n_f16(-10.f);</div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;    <span class="keyword">const</span> float16x8_t CONST_MAX_TANH = vdupq_n_f16(10.f);</div><div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;</div><div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;    <span class="keyword">const</span> float16x8_t x     = vminq_f16(vmaxq_f16(val, CONST_MIN_TANH), CONST_MAX_TANH);</div><div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;    <span class="keyword">const</span> float16x8_t exp2x = vexpq_f16(vmulq_f16(CONST_2, x));</div><div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;    <span class="keyword">const</span> float16x8_t num   = vsubq_f16(exp2x, CONST_1);</div><div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;    <span class="keyword">const</span> float16x8_t den   = vaddq_f16(exp2x, CONST_1);</div><div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;    <span class="keyword">const</span> float16x8_t <a class="code" href="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail.xhtml#a6854479935f66029852441b051e1a3e0">tanh</a>  = vmulq_f16(num, vinvq_f16(den));</div><div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail.xhtml#a6854479935f66029852441b051e1a3e0">tanh</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="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;<span class="keyword">inline</span> float16x8_t vtaylor_polyq_f16(float16x8_t x, <span class="keyword">const</span> std::array&lt;float16x8_t, 8&gt; &amp;coeffs)</div><div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;{</div><div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;    <span class="keyword">const</span> float16x8_t <a class="code" href="namespacearm__compute.xhtml#a1ce9b523fd4f3b5bbcadcd796183455aa7fc56270e7a70fa81a5935b72eacbe29">A</a>   = vaddq_f16(coeffs[0], vmulq_f16(coeffs[4], x));</div><div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;    <span class="keyword">const</span> float16x8_t <a class="code" href="namespacearm__compute.xhtml#a1ce9b523fd4f3b5bbcadcd796183455aa9d5ed678fe57bcca610140957afab571">B</a>   = vaddq_f16(coeffs[2], vmulq_f16(coeffs[6], x));</div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;    <span class="keyword">const</span> float16x8_t C   = vaddq_f16(coeffs[1], vmulq_f16(coeffs[5], x));</div><div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;    <span class="keyword">const</span> float16x8_t D   = vaddq_f16(coeffs[3], vmulq_f16(coeffs[7], x));</div><div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;    <span class="keyword">const</span> float16x8_t x2  = vmulq_f16(x, x);</div><div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;    <span class="keyword">const</span> float16x8_t x4  = vmulq_f16(x2, x2);</div><div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;    <span class="keyword">const</span> float16x8_t res = vaddq_f16(vaddq_f16(A, vmulq_f16(B, x2)), vmulq_f16(vaddq_f16(C, vmulq_f16(D, x2)), x4));</div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;    <span class="keywordflow">return</span> res;</div><div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;}</div><div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;</div><div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;<span class="keyword">inline</span> float16x8_t vexpq_f16(float16x8_t x)</div><div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;{</div><div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> float16x8_t CONST_LN2          = vdupq_n_f16(0.6931471805f); <span class="comment">// ln(2)</span></div><div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> float16x8_t CONST_INV_LN2      = vdupq_n_f16(1.4426950408f); <span class="comment">// 1/ln(2)</span></div><div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> float16x8_t CONST_0            = vdupq_n_f16(0.f);</div><div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> int16x8_t   CONST_NEGATIVE_126 = vdupq_n_s16(-126);</div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;</div><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;    <span class="comment">// Perform range reduction [-log(2),log(2)]</span></div><div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;    <span class="keyword">const</span> int16x8_t   m   = vcvtq_s16_f16(vmulq_f16(x, CONST_INV_LN2));</div><div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;    <span class="keyword">const</span> float16x8_t val = vsubq_f16(x, vmulq_f16(vcvtq_f16_s16(m), CONST_LN2));</div><div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;</div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    <span class="comment">// Polynomial Approximation</span></div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;    float16x8_t poly = vtaylor_polyq_f16(val, exp_tab_f16);</div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;</div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;    <span class="comment">// Reconstruct</span></div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;    poly = vreinterpretq_f16_s16(vqaddq_s16(vreinterpretq_s16_f16(poly), vqshlq_n_s16(m, 9)));</div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;    poly = vbslq_f16(vcltq_s16(m, CONST_NEGATIVE_126), CONST_0, poly);</div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;</div><div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;    <span class="keywordflow">return</span> poly;</div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;}</div><div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;</div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;<span class="keyword">inline</span> float16x8_t vlogq_f16(float16x8_t x)</div><div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;{</div><div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> int16x8_t   CONST_127 = vdupq_n_s16(127);           <span class="comment">// 127</span></div><div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> float16x8_t CONST_LN2 = vdupq_n_f16(0.6931471805f); <span class="comment">// ln(2)</span></div><div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;</div><div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;    <span class="comment">// Extract exponent</span></div><div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;    <span class="keyword">const</span> int16x8_t   m   = vsubq_s16(vreinterpretq_s16_u16(vshrq_n_u16(vreinterpretq_u16_f16(x), 9)), CONST_127);</div><div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;    <span class="keyword">const</span> float16x8_t val = vreinterpretq_f16_s16(vsubq_s16(vreinterpretq_s16_f16(x), vshlq_n_s16(m, 9)));</div><div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;</div><div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;    <span class="comment">// Polynomial Approximation</span></div><div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;    float16x8_t poly = vtaylor_polyq_f16(val, log_tab_f16);</div><div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;</div><div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;    <span class="comment">// Reconstruct</span></div><div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;    poly = vaddq_f16(poly, vmulq_f16(vcvtq_f16_s16(m), CONST_LN2));</div><div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;</div><div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;    <span class="keywordflow">return</span> poly;</div><div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;}</div><div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;</div><div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;<span class="keyword">inline</span> float16x8_t vpowq_f16(float16x8_t val, float16x8_t n)</div><div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;{</div><div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;    <span class="keywordflow">return</span> vexpq_f16(vmulq_f16(n, vlogq_f16(val)));</div><div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;}</div><div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* DOXYGEN_SKIP_THIS */</span><span class="preprocessor"></span></div><div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* __ARM_FEATURE_FP16_VECTOR_ARITHMETIC */</span><span class="preprocessor"></span></div><div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;} <span class="comment">// namespace arm_compute</span></div><div class="ttc" id="namespacearm__compute_xhtml_a3e59419da344d02daca9c5b274a1da45"><div class="ttname"><a href="namespacearm__compute.xhtml#a3e59419da344d02daca9c5b274a1da45">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>
 121 <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>
 122 <div class="ttc" id="namespacearm__compute_xhtml_ab8970d7aed07d8649f5e3088455948b8"><div class="ttname"><a href="namespacearm__compute.xhtml#ab8970d7aed07d8649f5e3088455948b8">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>
 123 <div class="ttc" id="namespacearm__compute_xhtml_acc6fd1bcd12ef1141e15401a04d31187"><div class="ttname"><a href="namespacearm__compute.xhtml#acc6fd1bcd12ef1141e15401a04d31187">arm_compute::vinv_f32</a></div><div class="ttdeci">float32x2_t vinv_f32(float32x2_t x)</div><div class="ttdoc">Calculate reciprocal. </div></div>
 124 <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>
 125 <div class="ttc" id="namespacearm__compute_xhtml_a0c10bb00a86edd8d0cd4c33b494f6cd4"><div class="ttname"><a href="namespacearm__compute.xhtml#a0c10bb00a86edd8d0cd4c33b494f6cd4">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&amp;#39;s method. </div></div>
 126 <div class="ttc" id="namespacearm__compute_xhtml"><div class="ttname"><a href="namespacearm__compute.xhtml">arm_compute</a></div><div class="ttdoc">This file contains all available output stages for GEMMLowp on OpenCL. </div><div class="ttdef"><b>Definition:</b> <a href="00__introduction_8dox_source.xhtml#l00001">00_introduction.dox:1</a></div></div>
 127 <div class="ttc" id="namespacearm__compute_xhtml_af7a0f3e622aa4bc8c6077d2262a04e2e"><div class="ttname"><a href="namespacearm__compute.xhtml#af7a0f3e622aa4bc8c6077d2262a04e2e">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>
 128 <div class="ttc" id="namespacearm__compute_xhtml_a869945609357fa552d94eb16f7aad4e9"><div class="ttname"><a href="namespacearm__compute.xhtml#a869945609357fa552d94eb16f7aad4e9">arm_compute::exp_tab</a></div><div class="ttdeci">const std::array&lt; float32x4_t, 8 &gt; exp_tab</div><div class="ttdoc">Exponent polynomial coefficients. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00028">NEMath.inl:28</a></div></div>
 129 <div class="ttc" id="namespacearm__compute_xhtml_aa6465367a67af2bae4ca46750231dae0"><div class="ttname"><a href="namespacearm__compute.xhtml#aa6465367a67af2bae4ca46750231dae0">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>
 130 <div class="ttc" id="namespacearm__compute_xhtml_a1d090b80b655e7f8fd8977bb93808b04"><div class="ttname"><a href="namespacearm__compute.xhtml#a1d090b80b655e7f8fd8977bb93808b04">arm_compute::vlogq_f32</a></div><div class="ttdeci">float32x4_t vlogq_f32(float32x4_t x)</div><div class="ttdoc">Calculate logarithm. </div></div>
 131 <div class="ttc" id="namespacearm__compute_xhtml_afc415e7fc5e633a0b85b08b2bba5b5cf"><div class="ttname"><a href="namespacearm__compute.xhtml#afc415e7fc5e633a0b85b08b2bba5b5cf">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>
 132 <div class="ttc" id="namespacearm__compute_xhtml_ab55486f1153a4c5f507d4923b59fc6a0"><div class="ttname"><a href="namespacearm__compute.xhtml#ab55486f1153a4c5f507d4923b59fc6a0">arm_compute::vexpq_f32</a></div><div class="ttdeci">float32x4_t vexpq_f32(float32x4_t x)</div><div class="ttdoc">Calculate exponential. </div></div>
 133 <div class="ttc" id="namespacearm__compute_xhtml_a2e0f2412b4d1302272d1aeb85d21ab25"><div class="ttname"><a href="namespacearm__compute.xhtml#a2e0f2412b4d1302272d1aeb85d21ab25">arm_compute::vinvq_f32</a></div><div class="ttdeci">float32x4_t vinvq_f32(float32x4_t x)</div><div class="ttdoc">Calculate reciprocal. </div></div>
 134 <div class="ttc" id="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail_xhtml_a6854479935f66029852441b051e1a3e0"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1fixed__point__arithmetic_1_1detail.xhtml#a6854479935f66029852441b051e1a3e0">arm_compute::test::fixed_point_arithmetic::detail::tanh</a></div><div class="ttdeci">fixed_point&lt; T &gt; tanh(fixed_point&lt; T &gt; x)</div><div class="ttdef"><b>Definition:</b> <a href="tests_2validation_2_fixed_point_8h_source.xhtml#l00952">FixedPoint.h:952</a></div></div>
 135 <div class="ttc" id="namespacearm__compute_xhtml_a48fb9cf404e8f7043235bf14105c9793"><div class="ttname"><a href="namespacearm__compute.xhtml#a48fb9cf404e8f7043235bf14105c9793">arm_compute::log_tab</a></div><div class="ttdeci">const std::array&lt; float32x4_t, 8 &gt; log_tab</div><div class="ttdoc">Logarithm polynomial coefficients. </div><div class="ttdef"><b>Definition:</b> <a href="_n_e_math_8inl_source.xhtml#l00043">NEMath.inl:43</a></div></div>
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