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<div class="title">NEON/PacketMath.h</div> </div>
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<div class="contents">
<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) 2008-2009 Gael Guennebaud <gael.guennebaud@inria.fr></span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// Copyright (C) 2010 Konstantinos Margaritis <markos@codex.gr></span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// Heavily based on Gael's SSE version.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// This Source Code Form is subject to the terms of the Mozilla</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</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="l00010"></a><span class="lineno"> 10</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="l00011"></a><span class="lineno"> 11</span> </div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#ifndef EIGEN_PACKET_MATH_NEON_H</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor"></span><span class="preprocessor">#define EIGEN_PACKET_MATH_NEON_H</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">namespace </span>Eigen {</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">namespace </span>internal {</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#ifndef EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor"></span><span class="preprocessor">#define EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD 8</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// FIXME NEON has 16 quad registers, but since the current register allocator</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// is so bad, it is much better to reduce it to 8</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#ifndef EIGEN_ARCH_DEFAULT_NUMBER_OF_REGISTERS</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor"></span><span class="preprocessor">#define EIGEN_ARCH_DEFAULT_NUMBER_OF_REGISTERS 8</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">typedef</span> float32x4_t Packet4f;</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">typedef</span> int32x4_t Packet4i;</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">typedef</span> uint32x4_t Packet4ui;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#define _EIGEN_DECLARE_CONST_Packet4f(NAME,X) \</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor"> const Packet4f p4f_##NAME = pset1<Packet4f>(X)</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#define _EIGEN_DECLARE_CONST_Packet4f_FROM_INT(NAME,X) \</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor"> const Packet4f p4f_##NAME = vreinterpretq_f32_u32(pset1<int>(X))</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#define _EIGEN_DECLARE_CONST_Packet4i(NAME,X) \</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor"> const Packet4i p4i_##NAME = pset1<Packet4i>(X)</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#if defined(__llvm__) && !defined(__clang__)</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor"></span> <span class="comment">//Special treatment for Apple's llvm-gcc, its NEON packet types are unions</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor"> #define EIGEN_INIT_NEON_PACKET2(X, Y) {{X, Y}}</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor"></span><span class="preprocessor"> #define EIGEN_INIT_NEON_PACKET4(X, Y, Z, W) {{X, Y, Z, W}}</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor"></span><span class="preprocessor">#else</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor"></span> <span class="comment">//Default initializer for packets</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor"> #define EIGEN_INIT_NEON_PACKET2(X, Y) {X, Y}</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor"></span><span class="preprocessor"> #define EIGEN_INIT_NEON_PACKET4(X, Y, Z, W) {X, Y, Z, W}</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor"></span> </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#ifndef __pld</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor"></span><span class="preprocessor">#define __pld(x) asm volatile ( " pld [%[addr]]\n" :: [addr] "r" (x) : "cc" );</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keyword">template</span><> <span class="keyword">struct </span>packet_traits<float> : default_packet_traits</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>  <span class="keyword">typedef</span> Packet4f type;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  Vectorizable = 1,</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  AlignedOnScalar = 1,</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  size = 4,</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>  HasDiv = 1,</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">// FIXME check the Has*</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  HasSin = 0,</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  HasCos = 0,</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  HasLog = 0,</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  HasExp = 0,</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  HasSqrt = 0</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> };</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="keyword">template</span><> <span class="keyword">struct </span>packet_traits<int> : default_packet_traits</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> {</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">typedef</span> Packet4i type;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  Vectorizable = 1,</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  AlignedOnScalar = 1,</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  size=4</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// FIXME check the Has*</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  };</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> };</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="preprocessor">#if EIGEN_GNUC_AT_MOST(4,4) && !defined(__llvm__)</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor"></span><span class="comment">// workaround gcc 4.2, 4.3 and 4.4 compilatin issue</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> EIGEN_STRONG_INLINE float32x4_t vld1q_f32(<span class="keyword">const</span> <span class="keywordtype">float</span>* x) { return ::vld1q_f32((<span class="keyword">const</span> float32_t*)x); }</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> EIGEN_STRONG_INLINE float32x2_t vld1_f32 (<span class="keyword">const</span> <span class="keywordtype">float</span>* x) { return ::vld1_f32 ((<span class="keyword">const</span> float32_t*)x); }</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> EIGEN_STRONG_INLINE <span class="keywordtype">void</span> vst1q_f32(<span class="keywordtype">float</span>* to, float32x4_t from) { ::vst1q_f32((float32_t*)to,from); }</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> EIGEN_STRONG_INLINE <span class="keywordtype">void</span> vst1_f32 (<span class="keywordtype">float</span>* to, float32x2_t from) { ::vst1_f32 ((float32_t*)to,from); }</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">template</span><> <span class="keyword">struct </span>unpacket_traits<Packet4f> { <span class="keyword">typedef</span> <span class="keywordtype">float</span> type; <span class="keyword">enum</span> {size=4}; };</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="keyword">template</span><> <span class="keyword">struct </span>unpacket_traits<Packet4i> { <span class="keyword">typedef</span> <span class="keywordtype">int</span> type; <span class="keyword">enum</span> {size=4}; };</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f pset1<Packet4f>(<span class="keyword">const</span> <span class="keywordtype">float</span>& from) { <span class="keywordflow">return</span> vdupq_n_f32(from); }</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i pset1<Packet4i>(<span class="keyword">const</span> <span class="keywordtype">int</span>& from) { <span class="keywordflow">return</span> vdupq_n_s32(from); }</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="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f plset<float>(<span class="keyword">const</span> <span class="keywordtype">float</span>& a)</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>  Packet4f countdown = EIGEN_INIT_NEON_PACKET4(0, 1, 2, 3);</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">return</span> vaddq_f32(pset1<Packet4f>(a), countdown);</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> }</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i plset<int>(<span class="keyword">const</span> <span class="keywordtype">int</span>& a)</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>  Packet4i countdown = EIGEN_INIT_NEON_PACKET4(0, 1, 2, 3);</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">return</span> vaddq_s32(pset1<Packet4i>(a), countdown);</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> </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f padd<Packet4f>(<span class="keyword">const</span> Packet4f& a, <span class="keyword">const</span> Packet4f& b) { <span class="keywordflow">return</span> vaddq_f32(a,b); }</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i padd<Packet4i>(<span class="keyword">const</span> Packet4i& a, <span class="keyword">const</span> Packet4i& b) { <span class="keywordflow">return</span> vaddq_s32(a,b); }</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f psub<Packet4f>(<span class="keyword">const</span> Packet4f& a, <span class="keyword">const</span> Packet4f& b) { <span class="keywordflow">return</span> vsubq_f32(a,b); }</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i psub<Packet4i>(<span class="keyword">const</span> Packet4i& a, <span class="keyword">const</span> Packet4i& b) { <span class="keywordflow">return</span> vsubq_s32(a,b); }</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 Packet4f pnegate(<span class="keyword">const</span> Packet4f& a) { <span class="keywordflow">return</span> vnegq_f32(a); }</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i pnegate(<span class="keyword">const</span> Packet4i& a) { <span class="keywordflow">return</span> vnegq_s32(a); }</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f pconj(<span class="keyword">const</span> Packet4f& a) { <span class="keywordflow">return</span> a; }</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i pconj(<span class="keyword">const</span> Packet4i& a) { <span class="keywordflow">return</span> a; }</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> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f pmul<Packet4f>(<span class="keyword">const</span> Packet4f& a, <span class="keyword">const</span> Packet4f& b) { <span class="keywordflow">return</span> vmulq_f32(a,b); }</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i pmul<Packet4i>(<span class="keyword">const</span> Packet4i& a, <span class="keyword">const</span> Packet4i& b) { <span class="keywordflow">return</span> vmulq_s32(a,b); }</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> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f pdiv<Packet4f>(<span class="keyword">const</span> Packet4f& a, <span class="keyword">const</span> Packet4f& b)</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> {</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  Packet4f inv, restep, div;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// NEON does not offer a divide instruction, we have to do a reciprocal approximation</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="comment">// However NEON in contrast to other SIMD engines (AltiVec/SSE), offers</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="comment">// a reciprocal estimate AND a reciprocal step -which saves a few instructions</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="comment">// vrecpeq_f32() returns an estimate to 1/b, which we will finetune with</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="comment">// Newton-Raphson and vrecpsq_f32()</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  inv = vrecpeq_f32(b);</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="comment">// This returns a differential, by which we will have to multiply inv to get a better</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="comment">// approximation of 1/b.</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  restep = vrecpsq_f32(b, inv);</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  inv = vmulq_f32(restep, inv);</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="comment">// Finally, multiply a by 1/b and get the wanted result of the division.</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  div = vmulq_f32(a, inv);</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">return</span> div;</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> }</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i pdiv<Packet4i>(<span class="keyword">const</span> Packet4i& <span class="comment">/*a*/</span>, <span class="keyword">const</span> Packet4i& <span class="comment">/*b*/</span>)</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> { eigen_assert(<span class="keyword">false</span> && <span class="stringliteral">"packet integer division are not supported by NEON"</span>);</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">return</span> pset1<Packet4i>(0);</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> </div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment">// for some weird raisons, it has to be overloaded for packet of integers</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f pmadd(<span class="keyword">const</span> Packet4f& a, <span class="keyword">const</span> Packet4f& b, <span class="keyword">const</span> Packet4f& c) { <span class="keywordflow">return</span> vmlaq_f32(c,a,b); }</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i pmadd(<span class="keyword">const</span> Packet4i& a, <span class="keyword">const</span> Packet4i& b, <span class="keyword">const</span> Packet4i& c) { <span class="keywordflow">return</span> vmlaq_s32(c,a,b); }</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> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f pmin<Packet4f>(<span class="keyword">const</span> Packet4f& a, <span class="keyword">const</span> Packet4f& b) { <span class="keywordflow">return</span> vminq_f32(a,b); }</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i pmin<Packet4i>(<span class="keyword">const</span> Packet4i& a, <span class="keyword">const</span> Packet4i& b) { <span class="keywordflow">return</span> vminq_s32(a,b); }</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f pmax<Packet4f>(<span class="keyword">const</span> Packet4f& a, <span class="keyword">const</span> Packet4f& b) { <span class="keywordflow">return</span> vmaxq_f32(a,b); }</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i pmax<Packet4i>(<span class="keyword">const</span> Packet4i& a, <span class="keyword">const</span> Packet4i& b) { <span class="keywordflow">return</span> vmaxq_s32(a,b); }</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment">// Logical Operations are not supported for float, so we have to reinterpret casts using NEON intrinsics</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f pand<Packet4f>(<span class="keyword">const</span> Packet4f& a, <span class="keyword">const</span> Packet4f& b)</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>  <span class="keywordflow">return</span> vreinterpretq_f32_u32(vandq_u32(vreinterpretq_u32_f32(a),vreinterpretq_u32_f32(b)));</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> }</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i pand<Packet4i>(<span class="keyword">const</span> Packet4i& a, <span class="keyword">const</span> Packet4i& b) { <span class="keywordflow">return</span> vandq_s32(a,b); }</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f por<Packet4f>(<span class="keyword">const</span> Packet4f& a, <span class="keyword">const</span> Packet4f& b)</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>  <span class="keywordflow">return</span> vreinterpretq_f32_u32(vorrq_u32(vreinterpretq_u32_f32(a),vreinterpretq_u32_f32(b)));</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> }</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i por<Packet4i>(<span class="keyword">const</span> Packet4i& a, <span class="keyword">const</span> Packet4i& b) { <span class="keywordflow">return</span> vorrq_s32(a,b); }</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f pxor<Packet4f>(<span class="keyword">const</span> Packet4f& a, <span class="keyword">const</span> Packet4f& b)</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> {</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">return</span> vreinterpretq_f32_u32(veorq_u32(vreinterpretq_u32_f32(a),vreinterpretq_u32_f32(b)));</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> }</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i pxor<Packet4i>(<span class="keyword">const</span> Packet4i& a, <span class="keyword">const</span> Packet4i& b) { <span class="keywordflow">return</span> veorq_s32(a,b); }</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> </div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f pandnot<Packet4f>(<span class="keyword">const</span> Packet4f& a, <span class="keyword">const</span> Packet4f& b)</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> {</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">return</span> vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(a),vreinterpretq_u32_f32(b)));</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> }</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i pandnot<Packet4i>(<span class="keyword">const</span> Packet4i& a, <span class="keyword">const</span> Packet4i& b) { <span class="keywordflow">return</span> vbicq_s32(a,b); }</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> </div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f pload<Packet4f>(<span class="keyword">const</span> <span class="keywordtype">float</span>* from) { EIGEN_DEBUG_ALIGNED_LOAD <span class="keywordflow">return</span> vld1q_f32(from); }</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i pload<Packet4i>(<span class="keyword">const</span> <span class="keywordtype">int</span>* from) { EIGEN_DEBUG_ALIGNED_LOAD <span class="keywordflow">return</span> vld1q_s32(from); }</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="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f ploadu<Packet4f>(<span class="keyword">const</span> <span class="keywordtype">float</span>* from) { EIGEN_DEBUG_UNALIGNED_LOAD <span class="keywordflow">return</span> vld1q_f32(from); }</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i ploadu<Packet4i>(<span class="keyword">const</span> <span class="keywordtype">int</span>* from) { EIGEN_DEBUG_UNALIGNED_LOAD <span class="keywordflow">return</span> vld1q_s32(from); }</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><> EIGEN_STRONG_INLINE Packet4f ploaddup<Packet4f>(<span class="keyword">const</span> <span class="keywordtype">float</span>* from)</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> {</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  float32x2_t lo, hi;</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  lo = vld1_dup_f32(from);</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  hi = vld1_dup_f32(from+1);</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">return</span> vcombine_f32(lo, hi);</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> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i ploaddup<Packet4i>(<span class="keyword">const</span> <span class="keywordtype">int</span>* from)</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>  int32x2_t lo, hi;</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  lo = vld1_dup_s32(from);</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  hi = vld1_dup_s32(from+1);</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">return</span> vcombine_s32(lo, hi);</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> </div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">void</span> pstore<float>(<span class="keywordtype">float</span>* to, <span class="keyword">const</span> Packet4f& from) { EIGEN_DEBUG_ALIGNED_STORE vst1q_f32(to, from); }</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">void</span> pstore<int>(<span class="keywordtype">int</span>* to, <span class="keyword">const</span> Packet4i& from) { EIGEN_DEBUG_ALIGNED_STORE vst1q_s32(to, from); }</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> </div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">void</span> pstoreu<float>(<span class="keywordtype">float</span>* to, <span class="keyword">const</span> Packet4f& from) { EIGEN_DEBUG_UNALIGNED_STORE vst1q_f32(to, from); }</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">void</span> pstoreu<int>(<span class="keywordtype">int</span>* to, <span class="keyword">const</span> Packet4i& from) { EIGEN_DEBUG_UNALIGNED_STORE vst1q_s32(to, from); }</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> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">void</span> prefetch<float>(<span class="keyword">const</span> <span class="keywordtype">float</span>* addr) { __pld(addr); }</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">void</span> prefetch<int>(<span class="keyword">const</span> <span class="keywordtype">int</span>* addr) { __pld(addr); }</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> </div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="comment">// FIXME only store the 2 first elements ?</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">float</span> pfirst<Packet4f>(<span class="keyword">const</span> Packet4f& a) { <span class="keywordtype">float</span> EIGEN_ALIGN16 x[4]; vst1q_f32(x, a); <span class="keywordflow">return</span> x[0]; }</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">int</span> pfirst<Packet4i>(<span class="keyword">const</span> Packet4i& a) { <span class="keywordtype">int</span> EIGEN_ALIGN16 x[4]; vst1q_s32(x, a); <span class="keywordflow">return</span> x[0]; }</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> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f preverse(<span class="keyword">const</span> Packet4f& a) {</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  float32x2_t a_lo, a_hi;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  Packet4f a_r64;</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>  a_r64 = vrev64q_f32(a);</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  a_lo = vget_low_f32(a_r64);</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  a_hi = vget_high_f32(a_r64);</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">return</span> vcombine_f32(a_hi, a_lo);</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> }</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i preverse(<span class="keyword">const</span> Packet4i& a) {</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  int32x2_t a_lo, a_hi;</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  Packet4i a_r64;</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> </div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  a_r64 = vrev64q_s32(a);</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  a_lo = vget_low_s32(a_r64);</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  a_hi = vget_high_s32(a_r64);</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">return</span> vcombine_s32(a_hi, a_lo);</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> }</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f pabs(<span class="keyword">const</span> Packet4f& a) { <span class="keywordflow">return</span> vabsq_f32(a); }</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i pabs(<span class="keyword">const</span> Packet4i& a) { <span class="keywordflow">return</span> vabsq_s32(a); }</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> </div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">float</span> predux<Packet4f>(<span class="keyword">const</span> Packet4f& a)</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>  float32x2_t a_lo, a_hi, sum;</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  a_lo = vget_low_f32(a);</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  a_hi = vget_high_f32(a);</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  sum = vpadd_f32(a_lo, a_hi);</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  sum = vpadd_f32(sum, sum);</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordflow">return</span> vget_lane_f32(sum, 0);</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</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="keyword">template</span><> EIGEN_STRONG_INLINE Packet4f preduxp<Packet4f>(<span class="keyword">const</span> Packet4f* vecs)</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>  float32x4x2_t vtrn1, vtrn2, res1, res2;</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  Packet4f sum1, sum2, sum;</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> </div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="comment">// NEON zip performs interleaving of the supplied vectors.</span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="comment">// We perform two interleaves in a row to acquire the transposed vector</span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  vtrn1 = vzipq_f32(vecs[0], vecs[2]);</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  vtrn2 = vzipq_f32(vecs[1], vecs[3]);</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  res1 = vzipq_f32(vtrn1.val[0], vtrn2.val[0]);</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  res2 = vzipq_f32(vtrn1.val[1], vtrn2.val[1]);</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> </div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="comment">// Do the addition of the resulting vectors</span></div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  sum1 = vaddq_f32(res1.val[0], res1.val[1]);</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  sum2 = vaddq_f32(res2.val[0], res2.val[1]);</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  sum = vaddq_f32(sum1, sum2);</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> </div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keywordflow">return</span> sum;</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> }</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">int</span> predux<Packet4i>(<span class="keyword">const</span> Packet4i& a)</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> {</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  int32x2_t a_lo, a_hi, sum;</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  a_lo = vget_low_s32(a);</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  a_hi = vget_high_s32(a);</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  sum = vpadd_s32(a_lo, a_hi);</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  sum = vpadd_s32(sum, sum);</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordflow">return</span> vget_lane_s32(sum, 0);</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> }</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> </div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE Packet4i preduxp<Packet4i>(<span class="keyword">const</span> Packet4i* vecs)</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> {</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  int32x4x2_t vtrn1, vtrn2, res1, res2;</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  Packet4i sum1, sum2, sum;</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> </div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="comment">// NEON zip performs interleaving of the supplied vectors.</span></div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="comment">// We perform two interleaves in a row to acquire the transposed vector</span></div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  vtrn1 = vzipq_s32(vecs[0], vecs[2]);</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  vtrn2 = vzipq_s32(vecs[1], vecs[3]);</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  res1 = vzipq_s32(vtrn1.val[0], vtrn2.val[0]);</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  res2 = vzipq_s32(vtrn1.val[1], vtrn2.val[1]);</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> </div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="comment">// Do the addition of the resulting vectors</span></div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  sum1 = vaddq_s32(res1.val[0], res1.val[1]);</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  sum2 = vaddq_s32(res2.val[0], res2.val[1]);</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  sum = vaddq_s32(sum1, sum2);</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> </div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="keywordflow">return</span> sum;</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span> }</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span> </div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span> <span class="comment">// Other reduction functions:</span></div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="comment">// mul</span></div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">float</span> predux_mul<Packet4f>(<span class="keyword">const</span> Packet4f& a)</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span> {</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  float32x2_t a_lo, a_hi, prod;</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> </div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="comment">// Get a_lo = |a1|a2| and a_hi = |a3|a4|</span></div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  a_lo = vget_low_f32(a);</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  a_hi = vget_high_f32(a);</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="comment">// Get the product of a_lo * a_hi -> |a1*a3|a2*a4|</span></div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  prod = vmul_f32(a_lo, a_hi);</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="comment">// Multiply prod with its swapped value |a2*a4|a1*a3|</span></div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  prod = vmul_f32(prod, vrev64_f32(prod));</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> </div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="keywordflow">return</span> vget_lane_f32(prod, 0);</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> }</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">int</span> predux_mul<Packet4i>(<span class="keyword">const</span> Packet4i& a)</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> {</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  int32x2_t a_lo, a_hi, prod;</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span> </div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="comment">// Get a_lo = |a1|a2| and a_hi = |a3|a4|</span></div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  a_lo = vget_low_s32(a);</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  a_hi = vget_high_s32(a);</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="comment">// Get the product of a_lo * a_hi -> |a1*a3|a2*a4|</span></div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  prod = vmul_s32(a_lo, a_hi);</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="comment">// Multiply prod with its swapped value |a2*a4|a1*a3|</span></div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  prod = vmul_s32(prod, vrev64_s32(prod));</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span> </div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordflow">return</span> vget_lane_s32(prod, 0);</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span> }</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span> </div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="comment">// min</span></div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">float</span> predux_min<Packet4f>(<span class="keyword">const</span> Packet4f& a)</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> {</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  float32x2_t a_lo, a_hi, min;</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span> </div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  a_lo = vget_low_f32(a);</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  a_hi = vget_high_f32(a);</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  min = vpmin_f32(a_lo, a_hi);</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  min = vpmin_f32(min, min);</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span> </div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="keywordflow">return</span> vget_lane_f32(min, 0);</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span> }</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span> </div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">int</span> predux_min<Packet4i>(<span class="keyword">const</span> Packet4i& a)</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span> {</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  int32x2_t a_lo, a_hi, min;</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> </div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  a_lo = vget_low_s32(a);</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  a_hi = vget_high_s32(a);</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  min = vpmin_s32(a_lo, a_hi);</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  min = vpmin_s32(min, min);</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  </div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keywordflow">return</span> vget_lane_s32(min, 0);</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> }</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span> </div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> <span class="comment">// max</span></div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">float</span> predux_max<Packet4f>(<span class="keyword">const</span> Packet4f& a)</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span> {</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  float32x2_t a_lo, a_hi, max;</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span> </div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  a_lo = vget_low_f32(a);</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  a_hi = vget_high_f32(a);</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  max = vpmax_f32(a_lo, a_hi);</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  max = vpmax_f32(max, max);</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span> </div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keywordflow">return</span> vget_lane_f32(max, 0);</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span> }</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span> </div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span> <span class="keyword">template</span><> EIGEN_STRONG_INLINE <span class="keywordtype">int</span> predux_max<Packet4i>(<span class="keyword">const</span> Packet4i& a)</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> {</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  int32x2_t a_lo, a_hi, max;</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span> </div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  a_lo = vget_low_s32(a);</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  a_hi = vget_high_s32(a);</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  max = vpmax_s32(a_lo, a_hi);</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span> </div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="keywordflow">return</span> vget_lane_s32(max, 0);</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span> }</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span> </div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span> <span class="comment">// this PALIGN_NEON business is to work around a bug in LLVM Clang 3.0 causing incorrect compilation errors,</span></div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span> <span class="comment">// see bug 347 and this LLVM bug: http://llvm.org/bugs/show_bug.cgi?id=11074</span></div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span> <span class="preprocessor">#define PALIGN_NEON(Offset,Type,Command) \</span></div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span> <span class="preprocessor">template<>\</span></div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span> <span class="preprocessor">struct palign_impl<Offset,Type>\</span></div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span> <span class="preprocessor">{\</span></div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span> <span class="preprocessor"> EIGEN_STRONG_INLINE static void run(Type& first, const Type& second)\</span></div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span> <span class="preprocessor"> {\</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span> <span class="preprocessor"> if (Offset!=0)\</span></div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span> <span class="preprocessor"> first = Command(first, second, Offset);\</span></div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span> <span class="preprocessor"> }\</span></div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span> <span class="preprocessor">};\</span></div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span> <span class="preprocessor"></span>PALIGN_NEON(0,Packet4f,vextq_f32)</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span> PALIGN_NEON(1,Packet4f,vextq_f32)</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> PALIGN_NEON(2,Packet4f,vextq_f32)</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> PALIGN_NEON(3,Packet4f,vextq_f32)</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> PALIGN_NEON(0,Packet4i,vextq_s32)</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> PALIGN_NEON(1,Packet4i,vextq_s32)</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span> PALIGN_NEON(2,Packet4i,vextq_s32)</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span> PALIGN_NEON(3,Packet4i,vextq_s32)</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  </div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span> <span class="preprocessor">#undef PALIGN_NEON</span></div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span> } <span class="comment">// end namespace internal</span></div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span> </div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span> } <span class="comment">// end namespace Eigen</span></div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span> </div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span> <span class="preprocessor">#endif // EIGEN_PACKET_MATH_NEON_H</span></div>
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