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<div class="title">NEON/Complex.h</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// This file is part of Eigen, a lightweight C++ template library</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// for linear algebra.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">//</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// Copyright (C) 2010 Gael Guennebaud <gael.guennebaud@inria.fr></span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// This Source Code Form is subject to the terms of the Mozilla</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// Public License v. 2.0. If a copy of the MPL was not distributed</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> </div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#ifndef EIGEN_COMPLEX_NEON_H</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor"></span><span class="preprocessor">#define EIGEN_COMPLEX_NEON_H</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="keyword">namespace </span>Eigen {</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">namespace </span>internal {</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">static</span> uint32x4_t p4ui_CONJ_XOR = EIGEN_INIT_NEON_PACKET4(0x00000000, 0x80000000, 0x00000000, 0x80000000);</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">static</span> uint32x2_t p2ui_CONJ_XOR = EIGEN_INIT_NEON_PACKET2(0x00000000, 0x80000000);</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">//---------- float ----------</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">struct </span>Packet2cf</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> {</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  EIGEN_STRONG_INLINE Packet2cf() {}</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  EIGEN_STRONG_INLINE <span class="keyword">explicit</span> Packet2cf(<span class="keyword">const</span> Packet4f& a) : v(a) {}</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  Packet4f v;</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> };</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">template</span><> <span class="keyword">struct </span>packet_traits<std::complex<float> > : default_packet_traits</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> {</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keyword">typedef</span> Packet2cf type;</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  Vectorizable = 1,</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  AlignedOnScalar = 1,</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  size = 2,</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  HasAdd = 1,</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  HasSub = 1,</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  HasMul = 1,</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  HasDiv = 1,</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  HasNegate = 1,</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  HasAbs = 0,</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  HasAbs2 = 0,</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  HasMin = 0,</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  HasMax = 0,</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  HasSetLinear = 0</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  };</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> };</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">template</span><> <span class="keyword">struct </span>unpacket_traits<Packet2cf> { <span class="keyword">typedef</span> std::complex<float> type; <span class="keyword">enum</span> {size=2}; };</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf pset1<Packet2cf>(<span class="keyword">const</span> std::complex<float>& from)</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  float32x2_t r64;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  r64 = vld1_f32((<span class="keywordtype">float</span> *)&from);</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> Packet2cf(vcombine_f32(r64, r64));</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> }</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf padd<Packet2cf>(<span class="keyword">const</span> Packet2cf& a, <span class="keyword">const</span> Packet2cf& b) { <span class="keywordflow">return</span> Packet2cf(padd<Packet4f>(a.v,b.v)); }</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf psub<Packet2cf>(<span class="keyword">const</span> Packet2cf& a, <span class="keyword">const</span> Packet2cf& b) { <span class="keywordflow">return</span> Packet2cf(psub<Packet4f>(a.v,b.v)); }</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf pnegate(<span class="keyword">const</span> Packet2cf& a) { <span class="keywordflow">return</span> Packet2cf(pnegate<Packet4f>(a.v)); }</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf pconj(<span class="keyword">const</span> Packet2cf& a)</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  Packet4ui b = vreinterpretq_u32_f32(a.v);</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> Packet2cf(vreinterpretq_f32_u32(veorq_u32(b, p4ui_CONJ_XOR)));</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> }</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf pmul<Packet2cf>(<span class="keyword">const</span> Packet2cf& a, <span class="keyword">const</span> Packet2cf& b)</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  Packet4f v1, v2;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// Get the real values of a | a1_re | a1_re | a2_re | a2_re |</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  v1 = vcombine_f32(vdup_lane_f32(vget_low_f32(a.v), 0), vdup_lane_f32(vget_high_f32(a.v), 0));</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">// Get the real values of a | a1_im | a1_im | a2_im | a2_im |</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  v2 = vcombine_f32(vdup_lane_f32(vget_low_f32(a.v), 1), vdup_lane_f32(vget_high_f32(a.v), 1));</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">// Multiply the real a with b</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  v1 = vmulq_f32(v1, b.v);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// Multiply the imag a with b</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  v2 = vmulq_f32(v2, b.v);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// Conjugate v2 </span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  v2 = vreinterpretq_f32_u32(veorq_u32(vreinterpretq_u32_f32(v2), p4ui_CONJ_XOR));</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="comment">// Swap real/imag elements in v2.</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  v2 = vrev64q_f32(v2);</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// Add and return the result</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">return</span> Packet2cf(vaddq_f32(v1, v2));</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> }</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf pand <Packet2cf>(<span class="keyword">const</span> Packet2cf& a, <span class="keyword">const</span> Packet2cf& b)</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> {</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">return</span> Packet2cf(vreinterpretq_f32_u32(vorrq_u32(vreinterpretq_u32_f32(a.v),vreinterpretq_u32_f32(b.v))));</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> }</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf por <Packet2cf>(<span class="keyword">const</span> Packet2cf& a, <span class="keyword">const</span> Packet2cf& b)</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> {</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">return</span> Packet2cf(vreinterpretq_f32_u32(vorrq_u32(vreinterpretq_u32_f32(a.v),vreinterpretq_u32_f32(b.v))));</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> }</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf pxor <Packet2cf>(<span class="keyword">const</span> Packet2cf& a, <span class="keyword">const</span> Packet2cf& b)</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> {</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">return</span> Packet2cf(vreinterpretq_f32_u32(veorq_u32(vreinterpretq_u32_f32(a.v),vreinterpretq_u32_f32(b.v))));</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> }</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf pandnot<Packet2cf>(<span class="keyword">const</span> Packet2cf& a, <span class="keyword">const</span> Packet2cf& b)</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> {</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">return</span> Packet2cf(vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(a.v),vreinterpretq_u32_f32(b.v))));</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> }</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf pload<Packet2cf>(<span class="keyword">const</span> std::complex<float>* from) { EIGEN_DEBUG_ALIGNED_LOAD <span class="keywordflow">return</span> Packet2cf(pload<Packet4f>((<span class="keyword">const</span> <span class="keywordtype">float</span>*)from)); }</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf ploadu<Packet2cf>(<span class="keyword">const</span> std::complex<float>* from) { EIGEN_DEBUG_UNALIGNED_LOAD <span class="keywordflow">return</span> Packet2cf(ploadu<Packet4f>((<span class="keyword">const</span> <span class="keywordtype">float</span>*)from)); }</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf ploaddup<Packet2cf>(<span class="keyword">const</span> std::complex<float>* from) { <span class="keywordflow">return</span> pset1<Packet2cf>(*from); }</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">void</span> pstore <std::complex<float> >(std::complex<float> * to, <span class="keyword">const</span> Packet2cf& from) { EIGEN_DEBUG_ALIGNED_STORE pstore((<span class="keywordtype">float</span>*)to, from.v); }</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">void</span> pstoreu<std::complex<float> >(std::complex<float> * to, <span class="keyword">const</span> Packet2cf& from) { EIGEN_DEBUG_UNALIGNED_STORE pstoreu((<span class="keywordtype">float</span>*)to, from.v); }</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">void</span> prefetch<std::complex<float> >(<span class="keyword">const</span> std::complex<float> * addr) { __pld((<span class="keywordtype">float</span> *)addr); }</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE std::complex<float> pfirst<Packet2cf>(<span class="keyword">const</span> Packet2cf& a)</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> {</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  std::complex<float> EIGEN_ALIGN16 x[2];</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  vst1q_f32((<span class="keywordtype">float</span> *)x, a.v);</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">return</span> x[0];</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> }</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf preverse(<span class="keyword">const</span> Packet2cf& a)</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> {</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  float32x2_t a_lo, a_hi;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  Packet4f a_r128;</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  a_lo = vget_low_f32(a.v);</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  a_hi = vget_high_f32(a.v);</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  a_r128 = vcombine_f32(a_hi, a_lo);</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">return</span> Packet2cf(a_r128);</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> }</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf pcplxflip<Packet2cf>(<span class="keyword">const</span> Packet2cf& a)</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> {</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">return</span> Packet2cf(vrev64q_f32(a.v));</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> }</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE std::complex<float> predux<Packet2cf>(<span class="keyword">const</span> Packet2cf& a)</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> {</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  float32x2_t a1, a2;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  std::complex<float> s;</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  a1 = vget_low_f32(a.v);</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  a2 = vget_high_f32(a.v);</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  a2 = vadd_f32(a1, a2);</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  vst1_f32((<span class="keywordtype">float</span> *)&s, a2);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">return</span> s;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> }</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf preduxp<Packet2cf>(<span class="keyword">const</span> Packet2cf* vecs)</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> {</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  Packet4f sum1, sum2, sum;</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="comment">// Add the first two 64-bit float32x2_t of vecs[0]</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  sum1 = vcombine_f32(vget_low_f32(vecs[0].v), vget_low_f32(vecs[1].v));</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  sum2 = vcombine_f32(vget_high_f32(vecs[0].v), vget_high_f32(vecs[1].v));</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  sum = vaddq_f32(sum1, sum2);</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">return</span> Packet2cf(sum);</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> }</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE std::complex<float> predux_mul<Packet2cf>(<span class="keyword">const</span> Packet2cf& a)</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> {</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  float32x2_t a1, a2, v1, v2, prod;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  std::complex<float> s;</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  a1 = vget_low_f32(a.v);</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  a2 = vget_high_f32(a.v);</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="comment">// Get the real values of a | a1_re | a1_re | a2_re | a2_re |</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  v1 = vdup_lane_f32(a1, 0);</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="comment">// Get the real values of a | a1_im | a1_im | a2_im | a2_im |</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  v2 = vdup_lane_f32(a1, 1);</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="comment">// Multiply the real a with b</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  v1 = vmul_f32(v1, a2);</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="comment">// Multiply the imag a with b</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  v2 = vmul_f32(v2, a2);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">// Conjugate v2 </span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  v2 = vreinterpret_f32_u32(veor_u32(vreinterpret_u32_f32(v2), p2ui_CONJ_XOR));</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="comment">// Swap real/imag elements in v2.</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  v2 = vrev64_f32(v2);</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="comment">// Add v1, v2</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  prod = vadd_f32(v1, v2);</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  vst1_f32((<span class="keywordtype">float</span> *)&s, prod);</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">return</span> s;</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> }</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> </div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="keyword">template</span><<span class="keywordtype">int</span> Offset></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="keyword">struct </span>palign_impl<Offset,Packet2cf></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> {</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  EIGEN_STRONG_INLINE <span class="keyword">static</span> <span class="keywordtype">void</span> run(Packet2cf& first, <span class="keyword">const</span> Packet2cf& second)</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  {</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">if</span> (Offset==1)</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  {</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  first.v = vextq_f32(first.v, second.v, 2);</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  }</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> };</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> </div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="keyword">template</span><> <span class="keyword">struct </span>conj_helper<Packet2cf, Packet2cf, false,true></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> {</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  EIGEN_STRONG_INLINE Packet2cf pmadd(<span class="keyword">const</span> Packet2cf& x, <span class="keyword">const</span> Packet2cf& y, <span class="keyword">const</span> Packet2cf& c)<span class="keyword"> const</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> padd(pmul(x,y),c); }</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  EIGEN_STRONG_INLINE Packet2cf pmul(<span class="keyword">const</span> Packet2cf& a, <span class="keyword">const</span> Packet2cf& b)<span class="keyword"> const</span></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">return</span> internal::pmul(a, pconj(b));</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  }</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> };</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="keyword">template</span><> <span class="keyword">struct </span>conj_helper<Packet2cf, Packet2cf, true,false></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> {</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  EIGEN_STRONG_INLINE Packet2cf pmadd(<span class="keyword">const</span> Packet2cf& x, <span class="keyword">const</span> Packet2cf& y, <span class="keyword">const</span> Packet2cf& c)<span class="keyword"> const</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> padd(pmul(x,y),c); }</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  EIGEN_STRONG_INLINE Packet2cf pmul(<span class="keyword">const</span> Packet2cf& a, <span class="keyword">const</span> Packet2cf& b)<span class="keyword"> const</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">return</span> internal::pmul(pconj(a), b);</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  }</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> };</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> <span class="keyword">template</span><> <span class="keyword">struct </span>conj_helper<Packet2cf, Packet2cf, true,true></div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> {</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  EIGEN_STRONG_INLINE Packet2cf pmadd(<span class="keyword">const</span> Packet2cf& x, <span class="keyword">const</span> Packet2cf& y, <span class="keyword">const</span> Packet2cf& c)<span class="keyword"> const</span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> padd(pmul(x,y),c); }</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> </div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  EIGEN_STRONG_INLINE Packet2cf pmul(<span class="keyword">const</span> Packet2cf& a, <span class="keyword">const</span> Packet2cf& b)<span class="keyword"> const</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">return</span> pconj(internal::pmul(a, b));</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  }</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> };</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> </div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet2cf pdiv<Packet2cf>(<span class="keyword">const</span> Packet2cf& a, <span class="keyword">const</span> Packet2cf& b)</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> {</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="comment">// TODO optimize it for AltiVec</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  Packet2cf res = conj_helper<Packet2cf,Packet2cf,false,true>().pmul(a,b);</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  Packet4f s, rev_s;</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> </div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="comment">// this computes the norm</span></div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  s = vmulq_f32(b.v, b.v);</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  rev_s = vrev64q_f32(s);</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">return</span> Packet2cf(pdiv(res.v, vaddq_f32(s,rev_s)));</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> }</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> </div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> } <span class="comment">// end namespace internal</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span> </div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> } <span class="comment">// end namespace Eigen</span></div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> </div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> <span class="preprocessor">#endif // EIGEN_COMPLEX_NEON_H</span></div>
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