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+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
+// Copyright (C) 2007-2011 Benoit Jacob <jacob.benoit.1@gmail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_CORE_H
+#define EIGEN_CORE_H
+
+// first thing Eigen does: stop the compiler from committing suicide
+#include "src/Core/util/DisableStupidWarnings.h"
+
+// Handle NVCC/CUDA/SYCL
+#if defined(__CUDACC__) || defined(__SYCL_DEVICE_ONLY__)
+ // Do not try asserts on CUDA and SYCL!
+ #ifndef EIGEN_NO_DEBUG
+ #define EIGEN_NO_DEBUG
+ #endif
+
+ #ifdef EIGEN_INTERNAL_DEBUGGING
+ #undef EIGEN_INTERNAL_DEBUGGING
+ #endif
+
+ #ifdef EIGEN_EXCEPTIONS
+ #undef EIGEN_EXCEPTIONS
+ #endif
+
+ // All functions callable from CUDA code must be qualified with __device__
+ #ifdef __CUDACC__
+ // Do not try to vectorize on CUDA and SYCL!
+ #ifndef EIGEN_DONT_VECTORIZE
+ #define EIGEN_DONT_VECTORIZE
+ #endif
+
+ #define EIGEN_DEVICE_FUNC __host__ __device__
+ // We need math_functions.hpp to ensure that that EIGEN_USING_STD_MATH macro
+ // works properly on the device side
+ #include <math_functions.hpp>
+ #else
+ #define EIGEN_DEVICE_FUNC
+ #endif
+
+#else
+ #define EIGEN_DEVICE_FUNC
+
+#endif
+
+// When compiling CUDA device code with NVCC, pull in math functions from the
+// global namespace. In host mode, and when device doee with clang, use the
+// std versions.
+#if defined(__CUDA_ARCH__) && defined(__NVCC__)
+ #define EIGEN_USING_STD_MATH(FUNC) using ::FUNC;
+#else
+ #define EIGEN_USING_STD_MATH(FUNC) using std::FUNC;
+#endif
+
+#if (defined(_CPPUNWIND) || defined(__EXCEPTIONS)) && !defined(__CUDA_ARCH__) && !defined(EIGEN_EXCEPTIONS) && !defined(EIGEN_USE_SYCL)
+ #define EIGEN_EXCEPTIONS
+#endif
+
+#ifdef EIGEN_EXCEPTIONS
+ #include <new>
+#endif
+
+// then include this file where all our macros are defined. It's really important to do it first because
+// it's where we do all the alignment settings (platform detection and honoring the user's will if he
+// defined e.g. EIGEN_DONT_ALIGN) so it needs to be done before we do anything with vectorization.
+#include "src/Core/util/Macros.h"
+
+// Disable the ipa-cp-clone optimization flag with MinGW 6.x or newer (enabled by default with -O3)
+// See http://eigen.tuxfamily.org/bz/show_bug.cgi?id=556 for details.
+#if EIGEN_COMP_MINGW && EIGEN_GNUC_AT_LEAST(4,6)
+ #pragma GCC optimize ("-fno-ipa-cp-clone")
+#endif
+
+#include <complex>
+
+// this include file manages BLAS and MKL related macros
+// and inclusion of their respective header files
+#include "src/Core/util/MKL_support.h"
+
+// if alignment is disabled, then disable vectorization. Note: EIGEN_MAX_ALIGN_BYTES is the proper check, it takes into
+// account both the user's will (EIGEN_MAX_ALIGN_BYTES,EIGEN_DONT_ALIGN) and our own platform checks
+#if EIGEN_MAX_ALIGN_BYTES==0
+ #ifndef EIGEN_DONT_VECTORIZE
+ #define EIGEN_DONT_VECTORIZE
+ #endif
+#endif
+
+#if EIGEN_COMP_MSVC
+ #include <malloc.h> // for _aligned_malloc -- need it regardless of whether vectorization is enabled
+ #if (EIGEN_COMP_MSVC >= 1500) // 2008 or later
+ // Remember that usage of defined() in a #define is undefined by the standard.
+ // a user reported that in 64-bit mode, MSVC doesn't care to define _M_IX86_FP.
+ #if (defined(_M_IX86_FP) && (_M_IX86_FP >= 2)) || EIGEN_ARCH_x86_64
+ #define EIGEN_SSE2_ON_MSVC_2008_OR_LATER
+ #endif
+ #endif
+#else
+ // Remember that usage of defined() in a #define is undefined by the standard
+ #if (defined __SSE2__) && ( (!EIGEN_COMP_GNUC) || EIGEN_COMP_ICC || EIGEN_GNUC_AT_LEAST(4,2) )
+ #define EIGEN_SSE2_ON_NON_MSVC_BUT_NOT_OLD_GCC
+ #endif
+#endif
+
+#ifndef EIGEN_DONT_VECTORIZE
+
+ #if defined (EIGEN_SSE2_ON_NON_MSVC_BUT_NOT_OLD_GCC) || defined(EIGEN_SSE2_ON_MSVC_2008_OR_LATER)
+
+ // Defines symbols for compile-time detection of which instructions are
+ // used.
+ // EIGEN_VECTORIZE_YY is defined if and only if the instruction set YY is used
+ #define EIGEN_VECTORIZE
+ #define EIGEN_VECTORIZE_SSE
+ #define EIGEN_VECTORIZE_SSE2
+
+ // Detect sse3/ssse3/sse4:
+ // gcc and icc defines __SSE3__, ...
+ // there is no way to know about this on msvc. You can define EIGEN_VECTORIZE_SSE* if you
+ // want to force the use of those instructions with msvc.
+ #ifdef __SSE3__
+ #define EIGEN_VECTORIZE_SSE3
+ #endif
+ #ifdef __SSSE3__
+ #define EIGEN_VECTORIZE_SSSE3
+ #endif
+ #ifdef __SSE4_1__
+ #define EIGEN_VECTORIZE_SSE4_1
+ #endif
+ #ifdef __SSE4_2__
+ #define EIGEN_VECTORIZE_SSE4_2
+ #endif
+ #ifdef __AVX__
+ #define EIGEN_VECTORIZE_AVX
+ #define EIGEN_VECTORIZE_SSE3
+ #define EIGEN_VECTORIZE_SSSE3
+ #define EIGEN_VECTORIZE_SSE4_1
+ #define EIGEN_VECTORIZE_SSE4_2
+ #endif
+ #ifdef __AVX2__
+ #define EIGEN_VECTORIZE_AVX2
+ #endif
+ #ifdef __FMA__
+ #define EIGEN_VECTORIZE_FMA
+ #endif
+ #if defined(__AVX512F__) && defined(EIGEN_ENABLE_AVX512)
+ #define EIGEN_VECTORIZE_AVX512
+ #define EIGEN_VECTORIZE_AVX2
+ #define EIGEN_VECTORIZE_AVX
+ #define EIGEN_VECTORIZE_FMA
+ #ifdef __AVX512DQ__
+ #define EIGEN_VECTORIZE_AVX512DQ
+ #endif
+ #endif
+
+ // include files
+
+ // This extern "C" works around a MINGW-w64 compilation issue
+ // https://sourceforge.net/tracker/index.php?func=detail&aid=3018394&group_id=202880&atid=983354
+ // In essence, intrin.h is included by windows.h and also declares intrinsics (just as emmintrin.h etc. below do).
+ // However, intrin.h uses an extern "C" declaration, and g++ thus complains of duplicate declarations
+ // with conflicting linkage. The linkage for intrinsics doesn't matter, but at that stage the compiler doesn't know;
+ // so, to avoid compile errors when windows.h is included after Eigen/Core, ensure intrinsics are extern "C" here too.
+ // notice that since these are C headers, the extern "C" is theoretically needed anyways.
+ extern "C" {
+ // In theory we should only include immintrin.h and not the other *mmintrin.h header files directly.
+ // Doing so triggers some issues with ICC. However old gcc versions seems to not have this file, thus:
+ #if EIGEN_COMP_ICC >= 1110
+ #include <immintrin.h>
+ #else
+ #include <mmintrin.h>
+ #include <emmintrin.h>
+ #include <xmmintrin.h>
+ #ifdef EIGEN_VECTORIZE_SSE3
+ #include <pmmintrin.h>
+ #endif
+ #ifdef EIGEN_VECTORIZE_SSSE3
+ #include <tmmintrin.h>
+ #endif
+ #ifdef EIGEN_VECTORIZE_SSE4_1
+ #include <smmintrin.h>
+ #endif
+ #ifdef EIGEN_VECTORIZE_SSE4_2
+ #include <nmmintrin.h>
+ #endif
+ #if defined(EIGEN_VECTORIZE_AVX) || defined(EIGEN_VECTORIZE_AVX512)
+ #include <immintrin.h>
+ #endif
+ #endif
+ } // end extern "C"
+ #elif defined __VSX__
+ #define EIGEN_VECTORIZE
+ #define EIGEN_VECTORIZE_VSX
+ #include <altivec.h>
+ // We need to #undef all these ugly tokens defined in <altivec.h>
+ // => use __vector instead of vector
+ #undef bool
+ #undef vector
+ #undef pixel
+ #elif defined __ALTIVEC__
+ #define EIGEN_VECTORIZE
+ #define EIGEN_VECTORIZE_ALTIVEC
+ #include <altivec.h>
+ // We need to #undef all these ugly tokens defined in <altivec.h>
+ // => use __vector instead of vector
+ #undef bool
+ #undef vector
+ #undef pixel
+ #elif (defined __ARM_NEON) || (defined __ARM_NEON__)
+ #define EIGEN_VECTORIZE
+ #define EIGEN_VECTORIZE_NEON
+ #include <arm_neon.h>
+ #elif (defined __s390x__ && defined __VEC__)
+ #define EIGEN_VECTORIZE
+ #define EIGEN_VECTORIZE_ZVECTOR
+ #include <vecintrin.h>
+ #endif
+#endif
+
+#if defined(__F16C__) && !defined(EIGEN_COMP_CLANG)
+ // We can use the optimized fp16 to float and float to fp16 conversion routines
+ #define EIGEN_HAS_FP16_C
+#endif
+
+#if defined __CUDACC__
+ #define EIGEN_VECTORIZE_CUDA
+ #include <vector_types.h>
+ #if defined __CUDACC_VER__ && __CUDACC_VER__ >= 70500
+ #define EIGEN_HAS_CUDA_FP16
+ #endif
+#endif
+
+#if defined EIGEN_HAS_CUDA_FP16
+ #include <host_defines.h>
+ #include <cuda_fp16.h>
+#endif
+
+#if (defined _OPENMP) && (!defined EIGEN_DONT_PARALLELIZE)
+ #define EIGEN_HAS_OPENMP
+#endif
+
+#ifdef EIGEN_HAS_OPENMP
+#include <omp.h>
+#endif
+
+// MSVC for windows mobile does not have the errno.h file
+#if !(EIGEN_COMP_MSVC && EIGEN_OS_WINCE) && !EIGEN_COMP_ARM
+#define EIGEN_HAS_ERRNO
+#endif
+
+#ifdef EIGEN_HAS_ERRNO
+#include <cerrno>
+#endif
+#include <cstddef>
+#include <cstdlib>
+#include <cmath>
+#include <cassert>
+#include <functional>
+#include <iosfwd>
+#include <cstring>
+#include <string>
+#include <limits>
+#include <climits> // for CHAR_BIT
+// for min/max:
+#include <algorithm>
+
+// for std::is_nothrow_move_assignable
+#ifdef EIGEN_INCLUDE_TYPE_TRAITS
+#include <type_traits>
+#endif
+
+// for outputting debug info
+#ifdef EIGEN_DEBUG_ASSIGN
+#include <iostream>
+#endif
+
+// required for __cpuid, needs to be included after cmath
+#if EIGEN_COMP_MSVC && EIGEN_ARCH_i386_OR_x86_64 && !EIGEN_OS_WINCE
+ #include <intrin.h>
+#endif
+
+/** \brief Namespace containing all symbols from the %Eigen library. */
+namespace Eigen {
+
+inline static const char *SimdInstructionSetsInUse(void) {
+#if defined(EIGEN_VECTORIZE_AVX512)
+ return "AVX512, FMA, AVX2, AVX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2";
+#elif defined(EIGEN_VECTORIZE_AVX)
+ return "AVX SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2";
+#elif defined(EIGEN_VECTORIZE_SSE4_2)
+ return "SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2";
+#elif defined(EIGEN_VECTORIZE_SSE4_1)
+ return "SSE, SSE2, SSE3, SSSE3, SSE4.1";
+#elif defined(EIGEN_VECTORIZE_SSSE3)
+ return "SSE, SSE2, SSE3, SSSE3";
+#elif defined(EIGEN_VECTORIZE_SSE3)
+ return "SSE, SSE2, SSE3";
+#elif defined(EIGEN_VECTORIZE_SSE2)
+ return "SSE, SSE2";
+#elif defined(EIGEN_VECTORIZE_ALTIVEC)
+ return "AltiVec";
+#elif defined(EIGEN_VECTORIZE_VSX)
+ return "VSX";
+#elif defined(EIGEN_VECTORIZE_NEON)
+ return "ARM NEON";
+#elif defined(EIGEN_VECTORIZE_ZVECTOR)
+ return "S390X ZVECTOR";
+#else
+ return "None";
+#endif
+}
+
+} // end namespace Eigen
+
+#if defined EIGEN2_SUPPORT_STAGE40_FULL_EIGEN3_STRICTNESS || defined EIGEN2_SUPPORT_STAGE30_FULL_EIGEN3_API || defined EIGEN2_SUPPORT_STAGE20_RESOLVE_API_CONFLICTS || defined EIGEN2_SUPPORT_STAGE10_FULL_EIGEN2_API || defined EIGEN2_SUPPORT
+// This will generate an error message:
+#error Eigen2-support is only available up to version 3.2. Please go to "http://eigen.tuxfamily.org/index.php?title=Eigen2" for further information
+#endif
+
+namespace Eigen {
+
+// we use size_t frequently and we'll never remember to prepend it with std:: everytime just to
+// ensure QNX/QCC support
+using std::size_t;
+// gcc 4.6.0 wants std:: for ptrdiff_t
+using std::ptrdiff_t;
+
+}
+
+/** \defgroup Core_Module Core module
+ * This is the main module of Eigen providing dense matrix and vector support
+ * (both fixed and dynamic size) with all the features corresponding to a BLAS library
+ * and much more...
+ *
+ * \code
+ * #include <Eigen/Core>
+ * \endcode
+ */
+
+#include "src/Core/util/Constants.h"
+#include "src/Core/util/Meta.h"
+#include "src/Core/util/ForwardDeclarations.h"
+#include "src/Core/util/StaticAssert.h"
+#include "src/Core/util/XprHelper.h"
+#include "src/Core/util/Memory.h"
+
+#include "src/Core/NumTraits.h"
+#include "src/Core/MathFunctions.h"
+#include "src/Core/GenericPacketMath.h"
+#include "src/Core/MathFunctionsImpl.h"
+
+#if defined EIGEN_VECTORIZE_AVX512
+ #include "src/Core/arch/SSE/PacketMath.h"
+ #include "src/Core/arch/AVX/PacketMath.h"
+ #include "src/Core/arch/AVX512/PacketMath.h"
+ #include "src/Core/arch/AVX512/MathFunctions.h"
+#elif defined EIGEN_VECTORIZE_AVX
+ // Use AVX for floats and doubles, SSE for integers
+ #include "src/Core/arch/SSE/PacketMath.h"
+ #include "src/Core/arch/SSE/Complex.h"
+ #include "src/Core/arch/SSE/MathFunctions.h"
+ #include "src/Core/arch/AVX/PacketMath.h"
+ #include "src/Core/arch/AVX/MathFunctions.h"
+ #include "src/Core/arch/AVX/Complex.h"
+ #include "src/Core/arch/AVX/TypeCasting.h"
+#elif defined EIGEN_VECTORIZE_SSE
+ #include "src/Core/arch/SSE/PacketMath.h"
+ #include "src/Core/arch/SSE/MathFunctions.h"
+ #include "src/Core/arch/SSE/Complex.h"
+ #include "src/Core/arch/SSE/TypeCasting.h"
+#elif defined(EIGEN_VECTORIZE_ALTIVEC) || defined(EIGEN_VECTORIZE_VSX)
+ #include "src/Core/arch/AltiVec/PacketMath.h"
+ #include "src/Core/arch/AltiVec/MathFunctions.h"
+ #include "src/Core/arch/AltiVec/Complex.h"
+#elif defined EIGEN_VECTORIZE_NEON
+ #include "src/Core/arch/NEON/PacketMath.h"
+ #include "src/Core/arch/NEON/MathFunctions.h"
+ #include "src/Core/arch/NEON/Complex.h"
+#elif defined EIGEN_VECTORIZE_ZVECTOR
+ #include "src/Core/arch/ZVector/PacketMath.h"
+ #include "src/Core/arch/ZVector/MathFunctions.h"
+ #include "src/Core/arch/ZVector/Complex.h"
+#endif
+
+// Half float support
+#include "src/Core/arch/CUDA/Half.h"
+#include "src/Core/arch/CUDA/PacketMathHalf.h"
+#include "src/Core/arch/CUDA/TypeCasting.h"
+
+#if defined EIGEN_VECTORIZE_CUDA
+ #include "src/Core/arch/CUDA/PacketMath.h"
+ #include "src/Core/arch/CUDA/MathFunctions.h"
+#endif
+
+#include "src/Core/arch/Default/Settings.h"
+
+#include "src/Core/functors/TernaryFunctors.h"
+#include "src/Core/functors/BinaryFunctors.h"
+#include "src/Core/functors/UnaryFunctors.h"
+#include "src/Core/functors/NullaryFunctors.h"
+#include "src/Core/functors/StlFunctors.h"
+#include "src/Core/functors/AssignmentFunctors.h"
+
+// Specialized functors to enable the processing of complex numbers
+// on CUDA devices
+#include "src/Core/arch/CUDA/Complex.h"
+
+#include "src/Core/IO.h"
+#include "src/Core/DenseCoeffsBase.h"
+#include "src/Core/DenseBase.h"
+#include "src/Core/MatrixBase.h"
+#include "src/Core/EigenBase.h"
+
+#include "src/Core/Product.h"
+#include "src/Core/CoreEvaluators.h"
+#include "src/Core/AssignEvaluator.h"
+
+#ifndef EIGEN_PARSED_BY_DOXYGEN // work around Doxygen bug triggered by Assign.h r814874
+ // at least confirmed with Doxygen 1.5.5 and 1.5.6
+ #include "src/Core/Assign.h"
+#endif
+
+#include "src/Core/ArrayBase.h"
+#include "src/Core/util/BlasUtil.h"
+#include "src/Core/DenseStorage.h"
+#include "src/Core/NestByValue.h"
+
+// #include "src/Core/ForceAlignedAccess.h"
+
+#include "src/Core/ReturnByValue.h"
+#include "src/Core/NoAlias.h"
+#include "src/Core/PlainObjectBase.h"
+#include "src/Core/Matrix.h"
+#include "src/Core/Array.h"
+#include "src/Core/CwiseTernaryOp.h"
+#include "src/Core/CwiseBinaryOp.h"
+#include "src/Core/CwiseUnaryOp.h"
+#include "src/Core/CwiseNullaryOp.h"
+#include "src/Core/CwiseUnaryView.h"
+#include "src/Core/SelfCwiseBinaryOp.h"
+#include "src/Core/Dot.h"
+#include "src/Core/StableNorm.h"
+#include "src/Core/Stride.h"
+#include "src/Core/MapBase.h"
+#include "src/Core/Map.h"
+#include "src/Core/Ref.h"
+#include "src/Core/Block.h"
+#include "src/Core/VectorBlock.h"
+#include "src/Core/Transpose.h"
+#include "src/Core/DiagonalMatrix.h"
+#include "src/Core/Diagonal.h"
+#include "src/Core/DiagonalProduct.h"
+#include "src/Core/Redux.h"
+#include "src/Core/Visitor.h"
+#include "src/Core/Fuzzy.h"
+#include "src/Core/Swap.h"
+#include "src/Core/CommaInitializer.h"
+#include "src/Core/GeneralProduct.h"
+#include "src/Core/Solve.h"
+#include "src/Core/Inverse.h"
+#include "src/Core/SolverBase.h"
+#include "src/Core/PermutationMatrix.h"
+#include "src/Core/Transpositions.h"
+#include "src/Core/TriangularMatrix.h"
+#include "src/Core/SelfAdjointView.h"
+#include "src/Core/products/GeneralBlockPanelKernel.h"
+#include "src/Core/products/Parallelizer.h"
+#include "src/Core/ProductEvaluators.h"
+#include "src/Core/products/GeneralMatrixVector.h"
+#include "src/Core/products/GeneralMatrixMatrix.h"
+#include "src/Core/SolveTriangular.h"
+#include "src/Core/products/GeneralMatrixMatrixTriangular.h"
+#include "src/Core/products/SelfadjointMatrixVector.h"
+#include "src/Core/products/SelfadjointMatrixMatrix.h"
+#include "src/Core/products/SelfadjointProduct.h"
+#include "src/Core/products/SelfadjointRank2Update.h"
+#include "src/Core/products/TriangularMatrixVector.h"
+#include "src/Core/products/TriangularMatrixMatrix.h"
+#include "src/Core/products/TriangularSolverMatrix.h"
+#include "src/Core/products/TriangularSolverVector.h"
+#include "src/Core/BandMatrix.h"
+#include "src/Core/CoreIterators.h"
+#include "src/Core/ConditionEstimator.h"
+
+#include "src/Core/BooleanRedux.h"
+#include "src/Core/Select.h"
+#include "src/Core/VectorwiseOp.h"
+#include "src/Core/Random.h"
+#include "src/Core/Replicate.h"
+#include "src/Core/Reverse.h"
+#include "src/Core/ArrayWrapper.h"
+
+#ifdef EIGEN_USE_BLAS
+#include "src/Core/products/GeneralMatrixMatrix_BLAS.h"
+#include "src/Core/products/GeneralMatrixVector_BLAS.h"
+#include "src/Core/products/GeneralMatrixMatrixTriangular_BLAS.h"
+#include "src/Core/products/SelfadjointMatrixMatrix_BLAS.h"
+#include "src/Core/products/SelfadjointMatrixVector_BLAS.h"
+#include "src/Core/products/TriangularMatrixMatrix_BLAS.h"
+#include "src/Core/products/TriangularMatrixVector_BLAS.h"
+#include "src/Core/products/TriangularSolverMatrix_BLAS.h"
+#endif // EIGEN_USE_BLAS
+
+#ifdef EIGEN_USE_MKL_VML
+#include "src/Core/Assign_MKL.h"
+#endif
+
+#include "src/Core/GlobalFunctions.h"
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_CORE_H