00001
00002
00003
00004
00005
00006
00007
00008
00009
00010
00011
00012
00013
00014
00015
00016
00017
00018
00019
00020
00021
00022
00023
00024
00025 #ifndef EIGEN_COMPLEX_ALTIVEC_H
00026 #define EIGEN_COMPLEX_ALTIVEC_H
00027
00028 namespace internal {
00029
00030 static Packet4ui p4ui_CONJ_XOR = vec_mergeh((Packet4ui)p4i_ZERO, (Packet4ui)p4f_ZERO_);
00031 static Packet16uc p16uc_COMPLEX_RE = vec_sld((Packet16uc) vec_splat((Packet4ui)p16uc_FORWARD, 0), (Packet16uc) vec_splat((Packet4ui)p16uc_FORWARD, 2), 8);
00032 static Packet16uc p16uc_COMPLEX_IM = vec_sld((Packet16uc) vec_splat((Packet4ui)p16uc_FORWARD, 1), (Packet16uc) vec_splat((Packet4ui)p16uc_FORWARD, 3), 8);
00033 static Packet16uc p16uc_COMPLEX_REV = vec_sld(p16uc_REVERSE, p16uc_REVERSE, 8);
00034 static Packet16uc p16uc_COMPLEX_REV2 = vec_sld(p16uc_FORWARD, p16uc_FORWARD, 8);
00035 static Packet16uc p16uc_PSET_HI = (Packet16uc) vec_mergeh((Packet4ui) vec_splat((Packet4ui)p16uc_FORWARD, 0), (Packet4ui) vec_splat((Packet4ui)p16uc_FORWARD, 1));
00036 static Packet16uc p16uc_PSET_LO = (Packet16uc) vec_mergeh((Packet4ui) vec_splat((Packet4ui)p16uc_FORWARD, 2), (Packet4ui) vec_splat((Packet4ui)p16uc_FORWARD, 3));
00037
00038
00039 struct Packet2cf
00040 {
00041 EIGEN_STRONG_INLINE Packet2cf() {}
00042 EIGEN_STRONG_INLINE explicit Packet2cf(const Packet4f& a) : v(a) {}
00043 Packet4f v;
00044 };
00045
00046 template<> struct packet_traits<std::complex<float> > : default_packet_traits
00047 {
00048 typedef Packet2cf type;
00049 enum {
00050 Vectorizable = 1,
00051 size = 2,
00052
00053 HasAdd = 1,
00054 HasSub = 1,
00055 HasMul = 1,
00056 HasDiv = 1,
00057 HasNegate = 1,
00058 HasAbs = 0,
00059 HasAbs2 = 0,
00060 HasMin = 0,
00061 HasMax = 0,
00062 HasSetLinear = 0
00063 };
00064 };
00065
00066 template<> struct unpacket_traits<Packet2cf> { typedef std::complex<float> type; enum {size=2}; };
00067
00068 template<> EIGEN_STRONG_INLINE Packet2cf pset1<Packet2cf>(const std::complex<float>& from)
00069 {
00070 Packet2cf res;
00071
00072 if ((ptrdiff_t)&from % 16 == 0) {
00073 res.v = pload((const float *)&from);
00074 res.v = vec_perm(res.v, res.v, p16uc_PSET_HI);
00075 } else {
00076 res.v = ploadu((const float *)&from);
00077 res.v = vec_perm(res.v, res.v, p16uc_PSET_LO);
00078 }
00079 return res;
00080 }
00081
00082 template<> EIGEN_STRONG_INLINE Packet2cf padd<Packet2cf>(const Packet2cf& a, const Packet2cf& b) { return Packet2cf(vec_add(a.v,b.v)); }
00083 template<> EIGEN_STRONG_INLINE Packet2cf psub<Packet2cf>(const Packet2cf& a, const Packet2cf& b) { return Packet2cf(vec_sub(a.v,b.v)); }
00084 template<> EIGEN_STRONG_INLINE Packet2cf pnegate(const Packet2cf& a) { return Packet2cf(psub<Packet4f>(p4f_ZERO, a.v)); }
00085 template<> EIGEN_STRONG_INLINE Packet2cf pconj(const Packet2cf& a) { return Packet2cf((Packet4f)vec_xor((Packet4ui)a.v, p4ui_CONJ_XOR)); }
00086
00087 template<> EIGEN_STRONG_INLINE Packet2cf pmul<Packet2cf>(const Packet2cf& a, const Packet2cf& b)
00088 {
00089 Packet4f v1, v2;
00090
00091
00092 v1 = vec_perm(a.v, a.v, p16uc_COMPLEX_RE);
00093
00094 v2 = vec_perm(a.v, a.v, p16uc_COMPLEX_IM);
00095
00096 v1 = vec_madd(v1, b.v, p4f_ZERO);
00097
00098 v2 = vec_madd(v2, b.v, p4f_ZERO);
00099 v2 = (Packet4f) vec_xor((Packet4ui)v2, p4ui_CONJ_XOR);
00100
00101 v2 = vec_perm(v2, v2, p16uc_COMPLEX_REV);
00102
00103 return Packet2cf(vec_add(v1, v2));
00104 }
00105
00106 template<> EIGEN_STRONG_INLINE Packet2cf pand <Packet2cf>(const Packet2cf& a, const Packet2cf& b) { return Packet2cf(vec_and(a.v,b.v)); }
00107 template<> EIGEN_STRONG_INLINE Packet2cf por <Packet2cf>(const Packet2cf& a, const Packet2cf& b) { return Packet2cf(vec_or(a.v,b.v)); }
00108 template<> EIGEN_STRONG_INLINE Packet2cf pxor <Packet2cf>(const Packet2cf& a, const Packet2cf& b) { return Packet2cf(vec_xor(a.v,b.v)); }
00109 template<> EIGEN_STRONG_INLINE Packet2cf pandnot<Packet2cf>(const Packet2cf& a, const Packet2cf& b) { return Packet2cf(vec_and(a.v, vec_nor(b.v,b.v))); }
00110
00111 template<> EIGEN_STRONG_INLINE Packet2cf pload <std::complex<float> >(const std::complex<float>* from) { EIGEN_DEBUG_ALIGNED_LOAD return Packet2cf(pload((const float*)from)); }
00112 template<> EIGEN_STRONG_INLINE Packet2cf ploadu<std::complex<float> >(const std::complex<float>* from) { EIGEN_DEBUG_UNALIGNED_LOAD return Packet2cf(ploadu((const float*)from)); }
00113
00114 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); }
00115 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); }
00116
00117 template<> EIGEN_STRONG_INLINE void prefetch<std::complex<float> >(const std::complex<float> * addr) { vec_dstt((float *)addr, DST_CTRL(2,2,32), DST_CHAN); }
00118
00119 template<> EIGEN_STRONG_INLINE std::complex<float> pfirst<Packet2cf>(const Packet2cf& a)
00120 {
00121 std::complex<float> EIGEN_ALIGN16 res[2];
00122 pstore((float *)&res, a.v);
00123
00124 return res[0];
00125 }
00126
00127 template<> EIGEN_STRONG_INLINE Packet2cf preverse(const Packet2cf& a)
00128 {
00129 Packet4f rev_a;
00130 rev_a = vec_perm(a.v, a.v, p16uc_COMPLEX_REV2);
00131 return Packet2cf(rev_a);
00132 }
00133
00134 template<> EIGEN_STRONG_INLINE std::complex<float> predux<Packet2cf>(const Packet2cf& a)
00135 {
00136 Packet4f b;
00137 b = (Packet4f) vec_sld(a.v, a.v, 8);
00138 b = padd(a.v, b);
00139 return pfirst(Packet2cf(sum));
00140 }
00141
00142 template<> EIGEN_STRONG_INLINE Packet2cf preduxp<Packet2cf>(const Packet2cf* vecs)
00143 {
00144 Packet4f b1, b2;
00145
00146 b1 = (Packet4f) vec_sld(vecs[0].v, vecs[1].v, 8);
00147 b2 = (Packet4f) vec_sld(vecs[1].v, vecs[0].v, 8);
00148 b2 = (Packet4f) vec_sld(b2, b2, 8);
00149 b2 = padd(b1, b2);
00150
00151 return Packet2cf(b2);
00152 }
00153
00154 template<> EIGEN_STRONG_INLINE std::complex<float> predux_mul<Packet2cf>(const Packet2cf& a)
00155 {
00156 Packet4f b;
00157 Packet2cf prod;
00158 b = (Packet4f) vec_sld(a.v, a.v, 8);
00159 prod = pmul(a, Packet2cf(b));
00160
00161 return pfirst(prod);
00162 }
00163
00164 template<int Offset>
00165 struct palign_impl<Offset,Packet2cf>
00166 {
00167 EIGEN_STRONG_INLINE static void run(Packet2cf& first, const Packet2cf& second)
00168 {
00169 if (Offset==1)
00170 {
00171 first.v = vec_sld(first.v, second.v, 8);
00172 }
00173 }
00174 };
00175
00176 template<> struct conj_helper<Packet2cf, Packet2cf, false,true>
00177 {
00178 EIGEN_STRONG_INLINE Packet2cf pmadd(const Packet2cf& x, const Packet2cf& y, const Packet2cf& c) const
00179 { return padd(pmul(x,y),c); }
00180
00181 EIGEN_STRONG_INLINE Packet2cf pmul(const Packet2cf& a, const Packet2cf& b) const
00182 {
00183 return pmul(a, pconj(b));
00184 }
00185 };
00186
00187 template<> struct conj_helper<Packet2cf, Packet2cf, true,false>
00188 {
00189 EIGEN_STRONG_INLINE Packet2cf pmadd(const Packet2cf& x, const Packet2cf& y, const Packet2cf& c) const
00190 { return padd(pmul(x,y),c); }
00191
00192 EIGEN_STRONG_INLINE Packet2cf pmul(const Packet2cf& a, const Packet2cf& b) const
00193 {
00194 return pmul(pconj(a), b);
00195 }
00196 };
00197
00198 template<> struct conj_helper<Packet2cf, Packet2cf, true,true>
00199 {
00200 EIGEN_STRONG_INLINE Packet2cf pmadd(const Packet2cf& x, const Packet2cf& y, const Packet2cf& c) const
00201 { return padd(pmul(x,y),c); }
00202
00203 EIGEN_STRONG_INLINE Packet2cf pmul(const Packet2cf& a, const Packet2cf& b) const
00204 {
00205 return pconj(pmul(a, b));
00206 }
00207 };
00208
00209 template<> EIGEN_STRONG_INLINE Packet2cf pdiv<Packet2cf>(const Packet2cf& a, const Packet2cf& b)
00210 {
00211
00212 Packet2cf res = conj_helper<Packet2cf,Packet2cf,false,true>().pmul(a,b);
00213 Packet4f s = vec_madd(b.v, b.v, p4f_ZERO);
00214 return Packet2cf(pdiv(res.v, vec_add(s,vec_perm(s, s, p16uc_COMPLEX_REV))));
00215 }
00216
00217 }
00218
00219 #endif // EIGEN_COMPLEX_ALTIVEC_H