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Diffstat (limited to 'extern/Eigen3/Eigen/src/StlSupport/details.h')
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+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2009 Gael Guennebaud <gael.guennebaud@inria.fr>
+// Copyright (C) 2009 Hauke Heibel <hauke.heibel@googlemail.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_STL_DETAILS_H
+#define EIGEN_STL_DETAILS_H
+
+#ifndef EIGEN_ALIGNED_ALLOCATOR
+ #define EIGEN_ALIGNED_ALLOCATOR Eigen::aligned_allocator
+#endif
+
+namespace Eigen {
+
+ // This one is needed to prevent reimplementing the whole std::vector.
+ template <class T>
+ class aligned_allocator_indirection : public EIGEN_ALIGNED_ALLOCATOR<T>
+ {
+ public:
+ typedef size_t size_type;
+ typedef ptrdiff_t difference_type;
+ typedef T* pointer;
+ typedef const T* const_pointer;
+ typedef T& reference;
+ typedef const T& const_reference;
+ typedef T value_type;
+
+ template<class U>
+ struct rebind
+ {
+ typedef aligned_allocator_indirection<U> other;
+ };
+
+ aligned_allocator_indirection() {}
+ aligned_allocator_indirection(const aligned_allocator_indirection& ) : EIGEN_ALIGNED_ALLOCATOR<T>() {}
+ aligned_allocator_indirection(const EIGEN_ALIGNED_ALLOCATOR<T>& ) {}
+ template<class U>
+ aligned_allocator_indirection(const aligned_allocator_indirection<U>& ) {}
+ template<class U>
+ aligned_allocator_indirection(const EIGEN_ALIGNED_ALLOCATOR<U>& ) {}
+ ~aligned_allocator_indirection() {}
+ };
+
+#ifdef _MSC_VER
+
+ // sometimes, MSVC detects, at compile time, that the argument x
+ // in std::vector::resize(size_t s,T x) won't be aligned and generate an error
+ // even if this function is never called. Whence this little wrapper.
+#define EIGEN_WORKAROUND_MSVC_STL_SUPPORT(T) \
+ typename Eigen::internal::conditional< \
+ Eigen::internal::is_arithmetic<T>::value, \
+ T, \
+ Eigen::internal::workaround_msvc_stl_support<T> \
+ >::type
+
+ namespace internal {
+ template<typename T> struct workaround_msvc_stl_support : public T
+ {
+ inline workaround_msvc_stl_support() : T() {}
+ inline workaround_msvc_stl_support(const T& other) : T(other) {}
+ inline operator T& () { return *static_cast<T*>(this); }
+ inline operator const T& () const { return *static_cast<const T*>(this); }
+ template<typename OtherT>
+ inline T& operator=(const OtherT& other)
+ { T::operator=(other); return *this; }
+ inline workaround_msvc_stl_support& operator=(const workaround_msvc_stl_support& other)
+ { T::operator=(other); return *this; }
+ };
+ }
+
+#else
+
+#define EIGEN_WORKAROUND_MSVC_STL_SUPPORT(T) T
+
+#endif
+
+}
+
+#endif // EIGEN_STL_DETAILS_H