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Diffstat (limited to 'third_party/eigen3/Eigen/src/Core/NumTraits.h')
-rw-r--r-- | third_party/eigen3/Eigen/src/Core/NumTraits.h | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/third_party/eigen3/Eigen/src/Core/NumTraits.h b/third_party/eigen3/Eigen/src/Core/NumTraits.h deleted file mode 100644 index dee9159517..0000000000 --- a/third_party/eigen3/Eigen/src/Core/NumTraits.h +++ /dev/null @@ -1,177 +0,0 @@ -// This file is part of Eigen, a lightweight C++ template library -// for linear algebra. -// -// Copyright (C) 2006-2010 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_NUMTRAITS_H -#define EIGEN_NUMTRAITS_H - -namespace Eigen { - -/** \class NumTraits - * \ingroup Core_Module - * - * \brief Holds information about the various numeric (i.e. scalar) types allowed by Eigen. - * - * \param T the numeric type at hand - * - * This class stores enums, typedefs and static methods giving information about a numeric type. - * - * The provided data consists of: - * \li A typedef \a Real, giving the "real part" type of \a T. If \a T is already real, - * then \a Real is just a typedef to \a T. If \a T is \c std::complex<U> then \a Real - * is a typedef to \a U. - * \li A typedef \a NonInteger, giving the type that should be used for operations producing non-integral values, - * such as quotients, square roots, etc. If \a T is a floating-point type, then this typedef just gives - * \a T again. Note however that many Eigen functions such as internal::sqrt simply refuse to - * take integers. Outside of a few cases, Eigen doesn't do automatic type promotion. Thus, this typedef is - * only intended as a helper for code that needs to explicitly promote types. - * \li A typedef \a Nested giving the type to use to nest a value inside of the expression tree. If you don't know what - * this means, just use \a T here. - * \li An enum value \a IsComplex. It is equal to 1 if \a T is a \c std::complex - * type, and to 0 otherwise. - * \li An enum value \a IsInteger. It is equal to \c 1 if \a T is an integer type such as \c int, - * and to \c 0 otherwise. - * \li Enum values ReadCost, AddCost and MulCost representing a rough estimate of the number of CPU cycles needed - * to by move / add / mul instructions respectively, assuming the data is already stored in CPU registers. - * Stay vague here. No need to do architecture-specific stuff. - * \li An enum value \a IsSigned. It is equal to \c 1 if \a T is a signed type and to 0 if \a T is unsigned. - * \li An enum value \a RequireInitialization. It is equal to \c 1 if the constructor of the numeric type \a T must - * be called, and to 0 if it is safe not to call it. Default is 0 if \a T is an arithmetic type, and 1 otherwise. - * \li An epsilon() function which, unlike std::numeric_limits::epsilon(), returns a \a Real instead of a \a T. - * \li A dummy_precision() function returning a weak epsilon value. It is mainly used as a default - * value by the fuzzy comparison operators. - * \li highest() and lowest() functions returning the highest and lowest possible values respectively. - */ - -template<typename T> struct GenericNumTraits -{ - enum { - IsInteger = std::numeric_limits<T>::is_integer, - IsSigned = std::numeric_limits<T>::is_signed, - IsComplex = 0, - RequireInitialization = internal::is_arithmetic<T>::value ? 0 : 1, - ReadCost = 1, - AddCost = 1, - MulCost = 1 - }; - - typedef T Real; - typedef typename internal::conditional< - IsInteger, - typename internal::conditional<sizeof(T)<=2, float, double>::type, - T - >::type NonInteger; - typedef T Nested; - - EIGEN_DEVICE_FUNC - static inline Real epsilon() - { -#if defined(__CUDA_ARCH__) && !defined(__GCUDACC__) - return internal::device::numeric_limits<T>::epsilon(); -#else - return std::numeric_limits<T>::epsilon(); -#endif - } - EIGEN_DEVICE_FUNC - static inline Real dummy_precision() - { - // make sure to override this for floating-point types - return Real(0); - } - - EIGEN_DEVICE_FUNC - static inline T highest() { -#if defined(__CUDA_ARCH__) && !defined(__GCUDACC__) - return internal::device::numeric_limits<T>::max(); -#else - return (std::numeric_limits<T>::max)(); -#endif - } - - EIGEN_DEVICE_FUNC - static inline T lowest() { -#if defined(__CUDA_ARCH__) && !defined(__GCUDACC__) - return internal::device::numeric_limits<T>::lowest(); -#else - return IsInteger ? (std::numeric_limits<T>::min)() : (-(std::numeric_limits<T>::max)()); -#endif - } - -#ifdef EIGEN2_SUPPORT - enum { - HasFloatingPoint = !IsInteger - }; - typedef NonInteger FloatingPoint; -#endif -}; - -template<typename T> struct NumTraits : GenericNumTraits<T> -{}; - -template<> struct NumTraits<float> - : GenericNumTraits<float> -{ - EIGEN_DEVICE_FUNC - static inline float dummy_precision() { return 1e-5f; } -}; - -template<> struct NumTraits<double> : GenericNumTraits<double> -{ - EIGEN_DEVICE_FUNC - static inline double dummy_precision() { return 1e-12; } -}; - -template<> struct NumTraits<long double> - : GenericNumTraits<long double> -{ - static inline long double dummy_precision() { return 1e-15l; } -}; - -template<typename _Real> struct NumTraits<std::complex<_Real> > - : GenericNumTraits<std::complex<_Real> > -{ - typedef _Real Real; - enum { - IsComplex = 1, - RequireInitialization = NumTraits<_Real>::RequireInitialization, - ReadCost = 2 * NumTraits<_Real>::ReadCost, - AddCost = 2 * NumTraits<Real>::AddCost, - MulCost = 4 * NumTraits<Real>::MulCost + 2 * NumTraits<Real>::AddCost - }; - - static inline Real epsilon() { return NumTraits<Real>::epsilon(); } - static inline Real dummy_precision() { return NumTraits<Real>::dummy_precision(); } -}; - -template<typename Scalar, int Rows, int Cols, int Options, int MaxRows, int MaxCols> -struct NumTraits<Array<Scalar, Rows, Cols, Options, MaxRows, MaxCols> > -{ - typedef Array<Scalar, Rows, Cols, Options, MaxRows, MaxCols> ArrayType; - typedef typename NumTraits<Scalar>::Real RealScalar; - typedef Array<RealScalar, Rows, Cols, Options, MaxRows, MaxCols> Real; - typedef typename NumTraits<Scalar>::NonInteger NonIntegerScalar; - typedef Array<NonIntegerScalar, Rows, Cols, Options, MaxRows, MaxCols> NonInteger; - typedef ArrayType & Nested; - - enum { - IsComplex = NumTraits<Scalar>::IsComplex, - IsInteger = NumTraits<Scalar>::IsInteger, - IsSigned = NumTraits<Scalar>::IsSigned, - RequireInitialization = 1, - ReadCost = ArrayType::SizeAtCompileTime==Dynamic ? Dynamic : ArrayType::SizeAtCompileTime * NumTraits<Scalar>::ReadCost, - AddCost = ArrayType::SizeAtCompileTime==Dynamic ? Dynamic : ArrayType::SizeAtCompileTime * NumTraits<Scalar>::AddCost, - MulCost = ArrayType::SizeAtCompileTime==Dynamic ? Dynamic : ArrayType::SizeAtCompileTime * NumTraits<Scalar>::MulCost - }; - - static inline RealScalar epsilon() { return NumTraits<RealScalar>::epsilon(); } - static inline RealScalar dummy_precision() { return NumTraits<RealScalar>::dummy_precision(); } -}; - -} // end namespace Eigen - -#endif // EIGEN_NUMTRAITS_H |