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Diffstat (limited to 'extern/Eigen2/Eigen/src/Core/arch/AltiVec/PacketMath.h')
-rw-r--r-- | extern/Eigen2/Eigen/src/Core/arch/AltiVec/PacketMath.h | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/extern/Eigen2/Eigen/src/Core/arch/AltiVec/PacketMath.h b/extern/Eigen2/Eigen/src/Core/arch/AltiVec/PacketMath.h deleted file mode 100644 index 4de3b5e2e0b..00000000000 --- a/extern/Eigen2/Eigen/src/Core/arch/AltiVec/PacketMath.h +++ /dev/null @@ -1,354 +0,0 @@ -// This file is part of Eigen, a lightweight C++ template library -// for linear algebra. Eigen itself is part of the KDE project. -// -// Copyright (C) 2008 Konstantinos Margaritis <markos@codex.gr> -// -// Eigen is free software; you can redistribute it and/or -// modify it under the terms of the GNU Lesser General Public -// License as published by the Free Software Foundation; either -// version 3 of the License, or (at your option) any later version. -// -// Alternatively, you can redistribute it and/or -// modify it under the terms of the GNU General Public License as -// published by the Free Software Foundation; either version 2 of -// the License, or (at your option) any later version. -// -// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY -// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS -// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public -// License and a copy of the GNU General Public License along with -// Eigen. If not, see <http://www.gnu.org/licenses/>. - -#ifndef EIGEN_PACKET_MATH_ALTIVEC_H -#define EIGEN_PACKET_MATH_ALTIVEC_H - -#ifndef EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD -#define EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD 4 -#endif - -typedef __vector float v4f; -typedef __vector int v4i; -typedef __vector unsigned int v4ui; -typedef __vector __bool int v4bi; - -// We don't want to write the same code all the time, but we need to reuse the constants -// and it doesn't really work to declare them global, so we define macros instead - -#define USE_CONST_v0i const v4i v0i = vec_splat_s32(0) -#define USE_CONST_v1i const v4i v1i = vec_splat_s32(1) -#define USE_CONST_v16i_ const v4i v16i_ = vec_splat_s32(-16) -#define USE_CONST_v0f USE_CONST_v0i; const v4f v0f = (v4f) v0i -#define USE_CONST_v1f USE_CONST_v1i; const v4f v1f = vec_ctf(v1i, 0) -#define USE_CONST_v1i_ const v4ui v1i_ = vec_splat_u32(-1) -#define USE_CONST_v0f_ USE_CONST_v1i_; const v4f v0f_ = (v4f) vec_sl(v1i_, v1i_) - -template<> struct ei_packet_traits<float> { typedef v4f type; enum {size=4}; }; -template<> struct ei_packet_traits<int> { typedef v4i type; enum {size=4}; }; - -template<> struct ei_unpacket_traits<v4f> { typedef float type; enum {size=4}; }; -template<> struct ei_unpacket_traits<v4i> { typedef int type; enum {size=4}; }; - -inline std::ostream & operator <<(std::ostream & s, const v4f & v) -{ - union { - v4f v; - float n[4]; - } vt; - vt.v = v; - s << vt.n[0] << ", " << vt.n[1] << ", " << vt.n[2] << ", " << vt.n[3]; - return s; -} - -inline std::ostream & operator <<(std::ostream & s, const v4i & v) -{ - union { - v4i v; - int n[4]; - } vt; - vt.v = v; - s << vt.n[0] << ", " << vt.n[1] << ", " << vt.n[2] << ", " << vt.n[3]; - return s; -} - -inline std::ostream & operator <<(std::ostream & s, const v4ui & v) -{ - union { - v4ui v; - unsigned int n[4]; - } vt; - vt.v = v; - s << vt.n[0] << ", " << vt.n[1] << ", " << vt.n[2] << ", " << vt.n[3]; - return s; -} - -inline std::ostream & operator <<(std::ostream & s, const v4bi & v) -{ - union { - __vector __bool int v; - unsigned int n[4]; - } vt; - vt.v = v; - s << vt.n[0] << ", " << vt.n[1] << ", " << vt.n[2] << ", " << vt.n[3]; - return s; -} - -template<> inline v4f ei_padd(const v4f& a, const v4f& b) { return vec_add(a,b); } -template<> inline v4i ei_padd(const v4i& a, const v4i& b) { return vec_add(a,b); } - -template<> inline v4f ei_psub(const v4f& a, const v4f& b) { return vec_sub(a,b); } -template<> inline v4i ei_psub(const v4i& a, const v4i& b) { return vec_sub(a,b); } - -template<> inline v4f ei_pmul(const v4f& a, const v4f& b) { USE_CONST_v0f; return vec_madd(a,b, v0f); } -template<> inline v4i ei_pmul(const v4i& a, const v4i& b) -{ - // Detailed in: http://freevec.org/content/32bit_signed_integer_multiplication_altivec - //Set up constants, variables - v4i a1, b1, bswap, low_prod, high_prod, prod, prod_, v1sel; - USE_CONST_v0i; - USE_CONST_v1i; - USE_CONST_v16i_; - - // Get the absolute values - a1 = vec_abs(a); - b1 = vec_abs(b); - - // Get the signs using xor - v4bi sgn = (v4bi) vec_cmplt(vec_xor(a, b), v0i); - - // Do the multiplication for the asbolute values. - bswap = (v4i) vec_rl((v4ui) b1, (v4ui) v16i_ ); - low_prod = vec_mulo((__vector short)a1, (__vector short)b1); - high_prod = vec_msum((__vector short)a1, (__vector short)bswap, v0i); - high_prod = (v4i) vec_sl((v4ui) high_prod, (v4ui) v16i_); - prod = vec_add( low_prod, high_prod ); - - // NOR the product and select only the negative elements according to the sign mask - prod_ = vec_nor(prod, prod); - prod_ = vec_sel(v0i, prod_, sgn); - - // Add 1 to the result to get the negative numbers - v1sel = vec_sel(v0i, v1i, sgn); - prod_ = vec_add(prod_, v1sel); - - // Merge the results back to the final vector. - prod = vec_sel(prod, prod_, sgn); - - return prod; -} - -template<> inline v4f ei_pdiv(const v4f& a, const v4f& b) { - v4f t, y_0, y_1, res; - USE_CONST_v0f; - USE_CONST_v1f; - - // Altivec does not offer a divide instruction, we have to do a reciprocal approximation - y_0 = vec_re(b); - - // Do one Newton-Raphson iteration to get the needed accuracy - t = vec_nmsub(y_0, b, v1f); - y_1 = vec_madd(y_0, t, y_0); - - res = vec_madd(a, y_1, v0f); - return res; -} - -template<> inline v4f ei_pmadd(const v4f& a, const v4f& b, const v4f& c) { return vec_madd(a, b, c); } - -template<> inline v4f ei_pmin(const v4f& a, const v4f& b) { return vec_min(a,b); } -template<> inline v4i ei_pmin(const v4i& a, const v4i& b) { return vec_min(a,b); } - -template<> inline v4f ei_pmax(const v4f& a, const v4f& b) { return vec_max(a,b); } -template<> inline v4i ei_pmax(const v4i& a, const v4i& b) { return vec_max(a,b); } - -template<> inline v4f ei_pload(const float* from) { return vec_ld(0, from); } -template<> inline v4i ei_pload(const int* from) { return vec_ld(0, from); } - -template<> inline v4f ei_ploadu(const float* from) -{ - // Taken from http://developer.apple.com/hardwaredrivers/ve/alignment.html - __vector unsigned char MSQ, LSQ; - __vector unsigned char mask; - MSQ = vec_ld(0, (unsigned char *)from); // most significant quadword - LSQ = vec_ld(15, (unsigned char *)from); // least significant quadword - mask = vec_lvsl(0, from); // create the permute mask - return (v4f) vec_perm(MSQ, LSQ, mask); // align the data -} - -template<> inline v4i ei_ploadu(const int* from) -{ - // Taken from http://developer.apple.com/hardwaredrivers/ve/alignment.html - __vector unsigned char MSQ, LSQ; - __vector unsigned char mask; - MSQ = vec_ld(0, (unsigned char *)from); // most significant quadword - LSQ = vec_ld(15, (unsigned char *)from); // least significant quadword - mask = vec_lvsl(0, from); // create the permute mask - return (v4i) vec_perm(MSQ, LSQ, mask); // align the data -} - -template<> inline v4f ei_pset1(const float& from) -{ - // Taken from http://developer.apple.com/hardwaredrivers/ve/alignment.html - float __attribute__(aligned(16)) af[4]; - af[0] = from; - v4f vc = vec_ld(0, af); - vc = vec_splat(vc, 0); - return vc; -} - -template<> inline v4i ei_pset1(const int& from) -{ - int __attribute__(aligned(16)) ai[4]; - ai[0] = from; - v4i vc = vec_ld(0, ai); - vc = vec_splat(vc, 0); - return vc; -} - -template<> inline void ei_pstore(float* to, const v4f& from) { vec_st(from, 0, to); } -template<> inline void ei_pstore(int* to, const v4i& from) { vec_st(from, 0, to); } - -template<> inline void ei_pstoreu(float* to, const v4f& from) -{ - // Taken from http://developer.apple.com/hardwaredrivers/ve/alignment.html - // Warning: not thread safe! - __vector unsigned char MSQ, LSQ, edges; - __vector unsigned char edgeAlign, align; - - MSQ = vec_ld(0, (unsigned char *)to); // most significant quadword - LSQ = vec_ld(15, (unsigned char *)to); // least significant quadword - edgeAlign = vec_lvsl(0, to); // permute map to extract edges - edges=vec_perm(LSQ,MSQ,edgeAlign); // extract the edges - align = vec_lvsr( 0, to ); // permute map to misalign data - MSQ = vec_perm(edges,(__vector unsigned char)from,align); // misalign the data (MSQ) - LSQ = vec_perm((__vector unsigned char)from,edges,align); // misalign the data (LSQ) - vec_st( LSQ, 15, (unsigned char *)to ); // Store the LSQ part first - vec_st( MSQ, 0, (unsigned char *)to ); // Store the MSQ part -} - -template<> inline void ei_pstoreu(int* to , const v4i& from ) -{ - // Taken from http://developer.apple.com/hardwaredrivers/ve/alignment.html - // Warning: not thread safe! - __vector unsigned char MSQ, LSQ, edges; - __vector unsigned char edgeAlign, align; - - MSQ = vec_ld(0, (unsigned char *)to); // most significant quadword - LSQ = vec_ld(15, (unsigned char *)to); // least significant quadword - edgeAlign = vec_lvsl(0, to); // permute map to extract edges - edges=vec_perm(LSQ,MSQ,edgeAlign); // extract the edges - align = vec_lvsr( 0, to ); // permute map to misalign data - MSQ = vec_perm(edges,(__vector unsigned char)from,align); // misalign the data (MSQ) - LSQ = vec_perm((__vector unsigned char)from,edges,align); // misalign the data (LSQ) - vec_st( LSQ, 15, (unsigned char *)to ); // Store the LSQ part first - vec_st( MSQ, 0, (unsigned char *)to ); // Store the MSQ part -} - -template<> inline float ei_pfirst(const v4f& a) -{ - float __attribute__(aligned(16)) af[4]; - vec_st(a, 0, af); - return af[0]; -} - -template<> inline int ei_pfirst(const v4i& a) -{ - int __attribute__(aligned(16)) ai[4]; - vec_st(a, 0, ai); - return ai[0]; -} - -inline v4f ei_preduxp(const v4f* vecs) -{ - v4f v[4], sum[4]; - - // It's easier and faster to transpose then add as columns - // Check: http://www.freevec.org/function/matrix_4x4_transpose_floats for explanation - // Do the transpose, first set of moves - v[0] = vec_mergeh(vecs[0], vecs[2]); - v[1] = vec_mergel(vecs[0], vecs[2]); - v[2] = vec_mergeh(vecs[1], vecs[3]); - v[3] = vec_mergel(vecs[1], vecs[3]); - // Get the resulting vectors - sum[0] = vec_mergeh(v[0], v[2]); - sum[1] = vec_mergel(v[0], v[2]); - sum[2] = vec_mergeh(v[1], v[3]); - sum[3] = vec_mergel(v[1], v[3]); - - // Now do the summation: - // Lines 0+1 - sum[0] = vec_add(sum[0], sum[1]); - // Lines 2+3 - sum[1] = vec_add(sum[2], sum[3]); - // Add the results - sum[0] = vec_add(sum[0], sum[1]); - return sum[0]; -} - -inline float ei_predux(const v4f& a) -{ - v4f b, sum; - b = (v4f)vec_sld(a, a, 8); - sum = vec_add(a, b); - b = (v4f)vec_sld(sum, sum, 4); - sum = vec_add(sum, b); - return ei_pfirst(sum); -} - -inline v4i ei_preduxp(const v4i* vecs) -{ - v4i v[4], sum[4]; - - // It's easier and faster to transpose then add as columns - // Check: http://www.freevec.org/function/matrix_4x4_transpose_floats for explanation - // Do the transpose, first set of moves - v[0] = vec_mergeh(vecs[0], vecs[2]); - v[1] = vec_mergel(vecs[0], vecs[2]); - v[2] = vec_mergeh(vecs[1], vecs[3]); - v[3] = vec_mergel(vecs[1], vecs[3]); - // Get the resulting vectors - sum[0] = vec_mergeh(v[0], v[2]); - sum[1] = vec_mergel(v[0], v[2]); - sum[2] = vec_mergeh(v[1], v[3]); - sum[3] = vec_mergel(v[1], v[3]); - - // Now do the summation: - // Lines 0+1 - sum[0] = vec_add(sum[0], sum[1]); - // Lines 2+3 - sum[1] = vec_add(sum[2], sum[3]); - // Add the results - sum[0] = vec_add(sum[0], sum[1]); - return sum[0]; -} - -inline int ei_predux(const v4i& a) -{ - USE_CONST_v0i; - v4i sum; - sum = vec_sums(a, v0i); - sum = vec_sld(sum, v0i, 12); - return ei_pfirst(sum); -} - -template<int Offset> -struct ei_palign_impl<Offset, v4f> -{ - inline static void run(v4f& first, const v4f& second) - { - first = vec_sld(first, second, Offset*4); - } -}; - -template<int Offset> -struct ei_palign_impl<Offset, v4i> -{ - inline static void run(v4i& first, const v4i& second) - { - first = vec_sld(first, second, Offset*4); - } -}; - -#endif // EIGEN_PACKET_MATH_ALTIVEC_H |