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00025 #ifndef EIGEN_COMPLEX_NEON_H
00026 #define EIGEN_COMPLEX_NEON_H
00027
00028 namespace Eigen {
00029
00030 namespace internal {
00031
00032 static uint32x4_t p4ui_CONJ_XOR = EIGEN_INIT_NEON_PACKET4(0x00000000, 0x80000000, 0x00000000, 0x80000000);
00033 static uint32x2_t p2ui_CONJ_XOR = EIGEN_INIT_NEON_PACKET2(0x00000000, 0x80000000);
00034
00035
00036 struct Packet2cf
00037 {
00038 EIGEN_STRONG_INLINE Packet2cf() {}
00039 EIGEN_STRONG_INLINE explicit Packet2cf(const Packet4f& a) : v(a) {}
00040 Packet4f v;
00041 };
00042
00043 template<> struct packet_traits<std::complex<float> > : default_packet_traits
00044 {
00045 typedef Packet2cf type;
00046 enum {
00047 Vectorizable = 1,
00048 AlignedOnScalar = 1,
00049 size = 2,
00050
00051 HasAdd = 1,
00052 HasSub = 1,
00053 HasMul = 1,
00054 HasDiv = 1,
00055 HasNegate = 1,
00056 HasAbs = 0,
00057 HasAbs2 = 0,
00058 HasMin = 0,
00059 HasMax = 0,
00060 HasSetLinear = 0
00061 };
00062 };
00063
00064 template<> struct unpacket_traits<Packet2cf> { typedef std::complex<float> type; enum {size=2}; };
00065
00066 template<> EIGEN_STRONG_INLINE Packet2cf pset1<Packet2cf>(const std::complex<float>& from)
00067 {
00068 float32x2_t r64;
00069 r64 = vld1_f32((float *)&from);
00070
00071 return Packet2cf(vcombine_f32(r64, r64));
00072 }
00073
00074 template<> EIGEN_STRONG_INLINE Packet2cf padd<Packet2cf>(const Packet2cf& a, const Packet2cf& b) { return Packet2cf(padd<Packet4f>(a.v,b.v)); }
00075 template<> EIGEN_STRONG_INLINE Packet2cf psub<Packet2cf>(const Packet2cf& a, const Packet2cf& b) { return Packet2cf(psub<Packet4f>(a.v,b.v)); }
00076 template<> EIGEN_STRONG_INLINE Packet2cf pnegate(const Packet2cf& a) { return Packet2cf(pnegate<Packet4f>(a.v)); }
00077 template<> EIGEN_STRONG_INLINE Packet2cf pconj(const Packet2cf& a)
00078 {
00079 Packet4ui b = vreinterpretq_u32_f32(a.v);
00080 return Packet2cf(vreinterpretq_f32_u32(veorq_u32(b, p4ui_CONJ_XOR)));
00081 }
00082
00083 template<> EIGEN_STRONG_INLINE Packet2cf pmul<Packet2cf>(const Packet2cf& a, const Packet2cf& b)
00084 {
00085 Packet4f v1, v2;
00086 float32x2_t a_lo, a_hi;
00087
00088
00089 v1 = vcombine_f32(vdup_lane_f32(vget_low_f32(a.v), 0), vdup_lane_f32(vget_high_f32(a.v), 0));
00090
00091 v2 = vcombine_f32(vdup_lane_f32(vget_low_f32(a.v), 1), vdup_lane_f32(vget_high_f32(a.v), 1));
00092
00093 v1 = vmulq_f32(v1, b.v);
00094
00095 v2 = vmulq_f32(v2, b.v);
00096
00097 v2 = vreinterpretq_f32_u32(veorq_u32(vreinterpretq_u32_f32(v2), p4ui_CONJ_XOR));
00098
00099 a_lo = vrev64_f32(vget_low_f32(v2));
00100 a_hi = vrev64_f32(vget_high_f32(v2));
00101 v2 = vcombine_f32(a_lo, a_hi);
00102
00103 return Packet2cf(vaddq_f32(v1, v2));
00104 }
00105
00106 template<> EIGEN_STRONG_INLINE Packet2cf pand <Packet2cf>(const Packet2cf& a, const Packet2cf& b)
00107 {
00108 return Packet2cf(vreinterpretq_f32_u32(vorrq_u32(vreinterpretq_u32_f32(a.v),vreinterpretq_u32_f32(b.v))));
00109 }
00110 template<> EIGEN_STRONG_INLINE Packet2cf por <Packet2cf>(const Packet2cf& a, const Packet2cf& b)
00111 {
00112 return Packet2cf(vreinterpretq_f32_u32(vorrq_u32(vreinterpretq_u32_f32(a.v),vreinterpretq_u32_f32(b.v))));
00113 }
00114 template<> EIGEN_STRONG_INLINE Packet2cf pxor <Packet2cf>(const Packet2cf& a, const Packet2cf& b)
00115 {
00116 return Packet2cf(vreinterpretq_f32_u32(veorq_u32(vreinterpretq_u32_f32(a.v),vreinterpretq_u32_f32(b.v))));
00117 }
00118 template<> EIGEN_STRONG_INLINE Packet2cf pandnot<Packet2cf>(const Packet2cf& a, const Packet2cf& b)
00119 {
00120 return Packet2cf(vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(a.v),vreinterpretq_u32_f32(b.v))));
00121 }
00122
00123 template<> EIGEN_STRONG_INLINE Packet2cf pload<Packet2cf>(const std::complex<float>* from) { EIGEN_DEBUG_ALIGNED_LOAD return Packet2cf(pload<Packet4f>((const float*)from)); }
00124 template<> EIGEN_STRONG_INLINE Packet2cf ploadu<Packet2cf>(const std::complex<float>* from) { EIGEN_DEBUG_UNALIGNED_LOAD return Packet2cf(ploadu<Packet4f>((const float*)from)); }
00125
00126 template<> EIGEN_STRONG_INLINE Packet2cf ploaddup<Packet2cf>(const std::complex<float>* from) { return pset1<Packet2cf>(*from); }
00127
00128 template<> EIGEN_STRONG_INLINE void pstore <std::complex<float> >(std::complex<float> * to, const Packet2cf& from) { EIGEN_DEBUG_ALIGNED_STORE pstore((float*)to, from.v); }
00129 template<> EIGEN_STRONG_INLINE void pstoreu<std::complex<float> >(std::complex<float> * to, const Packet2cf& from) { EIGEN_DEBUG_UNALIGNED_STORE pstoreu((float*)to, from.v); }
00130
00131 template<> EIGEN_STRONG_INLINE void prefetch<std::complex<float> >(const std::complex<float> * addr) { __pld((float *)addr); }
00132
00133 template<> EIGEN_STRONG_INLINE std::complex<float> pfirst<Packet2cf>(const Packet2cf& a)
00134 {
00135 std::complex<float> EIGEN_ALIGN16 x[2];
00136 vst1q_f32((float *)x, a.v);
00137 return x[0];
00138 }
00139
00140 template<> EIGEN_STRONG_INLINE Packet2cf preverse(const Packet2cf& a)
00141 {
00142 float32x2_t a_lo, a_hi;
00143 Packet4f a_r128;
00144
00145 a_lo = vget_low_f32(a.v);
00146 a_hi = vget_high_f32(a.v);
00147 a_r128 = vcombine_f32(a_hi, a_lo);
00148
00149 return Packet2cf(a_r128);
00150 }
00151
00152 template<> EIGEN_STRONG_INLINE Packet2cf pcplxflip<Packet2cf>(const Packet2cf& a)
00153 {
00154 return Packet2cf(vrev64q_f32(a.v));
00155 }
00156
00157 template<> EIGEN_STRONG_INLINE std::complex<float> predux<Packet2cf>(const Packet2cf& a)
00158 {
00159 float32x2_t a1, a2;
00160 std::complex<float> s;
00161
00162 a1 = vget_low_f32(a.v);
00163 a2 = vget_high_f32(a.v);
00164 a2 = vadd_f32(a1, a2);
00165 vst1_f32((float *)&s, a2);
00166
00167 return s;
00168 }
00169
00170 template<> EIGEN_STRONG_INLINE Packet2cf preduxp<Packet2cf>(const Packet2cf* vecs)
00171 {
00172 Packet4f sum1, sum2, sum;
00173
00174
00175 sum1 = vcombine_f32(vget_low_f32(vecs[0].v), vget_low_f32(vecs[1].v));
00176 sum2 = vcombine_f32(vget_high_f32(vecs[0].v), vget_high_f32(vecs[1].v));
00177 sum = vaddq_f32(sum1, sum2);
00178
00179 return Packet2cf(sum);
00180 }
00181
00182 template<> EIGEN_STRONG_INLINE std::complex<float> predux_mul<Packet2cf>(const Packet2cf& a)
00183 {
00184 float32x2_t a1, a2, v1, v2, prod;
00185 std::complex<float> s;
00186
00187 a1 = vget_low_f32(a.v);
00188 a2 = vget_high_f32(a.v);
00189
00190 v1 = vdup_lane_f32(a1, 0);
00191
00192 v2 = vdup_lane_f32(a1, 1);
00193
00194 v1 = vmul_f32(v1, a2);
00195
00196 v2 = vmul_f32(v2, a2);
00197
00198 v2 = vreinterpret_f32_u32(veor_u32(vreinterpret_u32_f32(v2), p2ui_CONJ_XOR));
00199
00200 v2 = vrev64_f32(v2);
00201
00202 prod = vadd_f32(v1, v2);
00203
00204 vst1_f32((float *)&s, prod);
00205
00206 return s;
00207 }
00208
00209 template<int Offset>
00210 struct palign_impl<Offset,Packet2cf>
00211 {
00212 EIGEN_STRONG_INLINE static void run(Packet2cf& first, const Packet2cf& second)
00213 {
00214 if (Offset==1)
00215 {
00216 first.v = vextq_f32(first.v, second.v, 2);
00217 }
00218 }
00219 };
00220
00221 template<> struct conj_helper<Packet2cf, Packet2cf, false,true>
00222 {
00223 EIGEN_STRONG_INLINE Packet2cf pmadd(const Packet2cf& x, const Packet2cf& y, const Packet2cf& c) const
00224 { return padd(pmul(x,y),c); }
00225
00226 EIGEN_STRONG_INLINE Packet2cf pmul(const Packet2cf& a, const Packet2cf& b) const
00227 {
00228 return internal::pmul(a, pconj(b));
00229 }
00230 };
00231
00232 template<> struct conj_helper<Packet2cf, Packet2cf, true,false>
00233 {
00234 EIGEN_STRONG_INLINE Packet2cf pmadd(const Packet2cf& x, const Packet2cf& y, const Packet2cf& c) const
00235 { return padd(pmul(x,y),c); }
00236
00237 EIGEN_STRONG_INLINE Packet2cf pmul(const Packet2cf& a, const Packet2cf& b) const
00238 {
00239 return internal::pmul(pconj(a), b);
00240 }
00241 };
00242
00243 template<> struct conj_helper<Packet2cf, Packet2cf, true,true>
00244 {
00245 EIGEN_STRONG_INLINE Packet2cf pmadd(const Packet2cf& x, const Packet2cf& y, const Packet2cf& c) const
00246 { return padd(pmul(x,y),c); }
00247
00248 EIGEN_STRONG_INLINE Packet2cf pmul(const Packet2cf& a, const Packet2cf& b) const
00249 {
00250 return pconj(internal::pmul(a, b));
00251 }
00252 };
00253
00254 template<> EIGEN_STRONG_INLINE Packet2cf pdiv<Packet2cf>(const Packet2cf& a, const Packet2cf& b)
00255 {
00256
00257 Packet2cf res = conj_helper<Packet2cf,Packet2cf,false,true>().pmul(a,b);
00258 Packet4f s, rev_s;
00259 float32x2_t a_lo, a_hi;
00260
00261
00262 s = vmulq_f32(b.v, b.v);
00263 a_lo = vrev64_f32(vget_low_f32(s));
00264 a_hi = vrev64_f32(vget_high_f32(s));
00265 rev_s = vcombine_f32(a_lo, a_hi);
00266
00267 return Packet2cf(pdiv(res.v, vaddq_f32(s,rev_s)));
00268 }
00269
00270 }
00271
00272 }
00273
00274 #endif // EIGEN_COMPLEX_NEON_H