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Diffstat (limited to 'extern/Eigen2/Eigen/src/Core/util/Meta.h')
| -rw-r--r-- | extern/Eigen2/Eigen/src/Core/util/Meta.h | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/extern/Eigen2/Eigen/src/Core/util/Meta.h b/extern/Eigen2/Eigen/src/Core/util/Meta.h deleted file mode 100644 index c65c52ef42f..00000000000 --- a/extern/Eigen2/Eigen/src/Core/util/Meta.h +++ /dev/null @@ -1,183 +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 Gael Guennebaud <g.gael@free.fr> -// Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1@gmail.com> -// -// 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_META_H -#define EIGEN_META_H - -/** \internal - * \file Meta.h - * This file contains generic metaprogramming classes which are not specifically related to Eigen. - * \note In case you wonder, yes we're aware that Boost already provides all these features, - * we however don't want to add a dependency to Boost. - */ - -struct ei_meta_true { enum { ret = 1 }; }; -struct ei_meta_false { enum { ret = 0 }; }; - -template<bool Condition, typename Then, typename Else> -struct ei_meta_if { typedef Then ret; }; - -template<typename Then, typename Else> -struct ei_meta_if <false, Then, Else> { typedef Else ret; }; - -template<typename T, typename U> struct ei_is_same_type { enum { ret = 0 }; }; -template<typename T> struct ei_is_same_type<T,T> { enum { ret = 1 }; }; - -template<typename T> struct ei_unref { typedef T type; }; -template<typename T> struct ei_unref<T&> { typedef T type; }; - -template<typename T> struct ei_unpointer { typedef T type; }; -template<typename T> struct ei_unpointer<T*> { typedef T type; }; -template<typename T> struct ei_unpointer<T*const> { typedef T type; }; - -template<typename T> struct ei_unconst { typedef T type; }; -template<typename T> struct ei_unconst<const T> { typedef T type; }; -template<typename T> struct ei_unconst<T const &> { typedef T & type; }; -template<typename T> struct ei_unconst<T const *> { typedef T * type; }; - -template<typename T> struct ei_cleantype { typedef T type; }; -template<typename T> struct ei_cleantype<const T> { typedef typename ei_cleantype<T>::type type; }; -template<typename T> struct ei_cleantype<const T&> { typedef typename ei_cleantype<T>::type type; }; -template<typename T> struct ei_cleantype<T&> { typedef typename ei_cleantype<T>::type type; }; -template<typename T> struct ei_cleantype<const T*> { typedef typename ei_cleantype<T>::type type; }; -template<typename T> struct ei_cleantype<T*> { typedef typename ei_cleantype<T>::type type; }; - -/** \internal - * Convenient struct to get the result type of a unary or binary functor. - * - * It supports both the current STL mechanism (using the result_type member) as well as - * upcoming next STL generation (using a templated result member). - * If none of these members is provided, then the type of the first argument is returned. FIXME, that behavior is a pretty bad hack. - */ -template<typename T> struct ei_result_of {}; - -struct ei_has_none {int a[1];}; -struct ei_has_std_result_type {int a[2];}; -struct ei_has_tr1_result {int a[3];}; - -template<typename Func, typename ArgType, int SizeOf=sizeof(ei_has_none)> -struct ei_unary_result_of_select {typedef ArgType type;}; - -template<typename Func, typename ArgType> -struct ei_unary_result_of_select<Func, ArgType, sizeof(ei_has_std_result_type)> {typedef typename Func::result_type type;}; - -template<typename Func, typename ArgType> -struct ei_unary_result_of_select<Func, ArgType, sizeof(ei_has_tr1_result)> {typedef typename Func::template result<Func(ArgType)>::type type;}; - -template<typename Func, typename ArgType> -struct ei_result_of<Func(ArgType)> { - template<typename T> - static ei_has_std_result_type testFunctor(T const *, typename T::result_type const * = 0); - template<typename T> - static ei_has_tr1_result testFunctor(T const *, typename T::template result<T(ArgType)>::type const * = 0); - static ei_has_none testFunctor(...); - - // note that the following indirection is needed for gcc-3.3 - enum {FunctorType = sizeof(testFunctor(static_cast<Func*>(0)))}; - typedef typename ei_unary_result_of_select<Func, ArgType, FunctorType>::type type; -}; - -template<typename Func, typename ArgType0, typename ArgType1, int SizeOf=sizeof(ei_has_none)> -struct ei_binary_result_of_select {typedef ArgType0 type;}; - -template<typename Func, typename ArgType0, typename ArgType1> -struct ei_binary_result_of_select<Func, ArgType0, ArgType1, sizeof(ei_has_std_result_type)> -{typedef typename Func::result_type type;}; - -template<typename Func, typename ArgType0, typename ArgType1> -struct ei_binary_result_of_select<Func, ArgType0, ArgType1, sizeof(ei_has_tr1_result)> -{typedef typename Func::template result<Func(ArgType0,ArgType1)>::type type;}; - -template<typename Func, typename ArgType0, typename ArgType1> -struct ei_result_of<Func(ArgType0,ArgType1)> { - template<typename T> - static ei_has_std_result_type testFunctor(T const *, typename T::result_type const * = 0); - template<typename T> - static ei_has_tr1_result testFunctor(T const *, typename T::template result<T(ArgType0,ArgType1)>::type const * = 0); - static ei_has_none testFunctor(...); - - // note that the following indirection is needed for gcc-3.3 - enum {FunctorType = sizeof(testFunctor(static_cast<Func*>(0)))}; - typedef typename ei_binary_result_of_select<Func, ArgType0, ArgType1, FunctorType>::type type; -}; - -/** \internal In short, it computes int(sqrt(\a Y)) with \a Y an integer. - * Usage example: \code ei_meta_sqrt<1023>::ret \endcode - */ -template<int Y, - int InfX = 0, - int SupX = ((Y==1) ? 1 : Y/2), - bool Done = ((SupX-InfX)<=1 ? true : ((SupX*SupX <= Y) && ((SupX+1)*(SupX+1) > Y))) > - // use ?: instead of || just to shut up a stupid gcc 4.3 warning -class ei_meta_sqrt -{ - enum { - MidX = (InfX+SupX)/2, - TakeInf = MidX*MidX > Y ? 1 : 0, - NewInf = int(TakeInf) ? InfX : int(MidX), - NewSup = int(TakeInf) ? int(MidX) : SupX - }; - public: - enum { ret = ei_meta_sqrt<Y,NewInf,NewSup>::ret }; -}; - -template<int Y, int InfX, int SupX> -class ei_meta_sqrt<Y, InfX, SupX, true> { public: enum { ret = (SupX*SupX <= Y) ? SupX : InfX }; }; - -/** \internal determines whether the product of two numeric types is allowed and what the return type is */ -template<typename T, typename U> struct ei_scalar_product_traits -{ - // dummy general case where T and U aren't compatible -- not allowed anyway but we catch it elsewhere - //enum { Cost = NumTraits<T>::MulCost }; - typedef T ReturnType; -}; - -template<typename T> struct ei_scalar_product_traits<T,T> -{ - //enum { Cost = NumTraits<T>::MulCost }; - typedef T ReturnType; -}; - -template<typename T> struct ei_scalar_product_traits<T,std::complex<T> > -{ - //enum { Cost = 2*NumTraits<T>::MulCost }; - typedef std::complex<T> ReturnType; -}; - -template<typename T> struct ei_scalar_product_traits<std::complex<T>, T> -{ - //enum { Cost = 2*NumTraits<T>::MulCost }; - typedef std::complex<T> ReturnType; -}; - -// FIXME quick workaround around current limitation of ei_result_of -template<typename Scalar, typename ArgType0, typename ArgType1> -struct ei_result_of<ei_scalar_product_op<Scalar>(ArgType0,ArgType1)> { -typedef typename ei_scalar_product_traits<typename ei_cleantype<ArgType0>::type, typename ei_cleantype<ArgType1>::type>::ReturnType type; -}; - - - -#endif // EIGEN_META_H |