Shapeworks Studio  2.1
Shape analysis software suite
details.h
1 // This file is part of Eigen, a lightweight C++ template library
2 // for linear algebra.
3 //
4 // Copyright (C) 2009 Gael Guennebaud <gael.guennebaud@inria.fr>
5 // Copyright (C) 2009 Hauke Heibel <hauke.heibel@googlemail.com>
6 //
7 // This Source Code Form is subject to the terms of the Mozilla
8 // Public License v. 2.0. If a copy of the MPL was not distributed
9 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
10 
11 #ifndef EIGEN_STL_DETAILS_H
12 #define EIGEN_STL_DETAILS_H
13 
14 #ifndef EIGEN_ALIGNED_ALLOCATOR
15  #define EIGEN_ALIGNED_ALLOCATOR Eigen::aligned_allocator
16 #endif
17 
18 namespace Eigen {
19 
20  // This one is needed to prevent reimplementing the whole std::vector.
21  template <class T>
22  class aligned_allocator_indirection : public EIGEN_ALIGNED_ALLOCATOR<T>
23  {
24  public:
25  typedef size_t size_type;
26  typedef ptrdiff_t difference_type;
27  typedef T* pointer;
28  typedef const T* const_pointer;
29  typedef T& reference;
30  typedef const T& const_reference;
31  typedef T value_type;
32 
33  template<class U>
34  struct rebind
35  {
37  };
38 
40  aligned_allocator_indirection(const aligned_allocator_indirection& ) : EIGEN_ALIGNED_ALLOCATOR<T>() {}
41  aligned_allocator_indirection(const EIGEN_ALIGNED_ALLOCATOR<T>& ) {}
42  template<class U>
44  template<class U>
45  aligned_allocator_indirection(const EIGEN_ALIGNED_ALLOCATOR<U>& ) {}
47  };
48 
49 #ifdef _MSC_VER
50 
51  // sometimes, MSVC detects, at compile time, that the argument x
52  // in std::vector::resize(size_t s,T x) won't be aligned and generate an error
53  // even if this function is never called. Whence this little wrapper.
54 #define EIGEN_WORKAROUND_MSVC_STL_SUPPORT(T) \
55  typename Eigen::internal::conditional< \
56  Eigen::internal::is_arithmetic<T>::value, \
57  T, \
58  Eigen::internal::workaround_msvc_stl_support<T> \
59  >::type
60 
61  namespace internal {
62  template<typename T> struct workaround_msvc_stl_support : public T
63  {
64  inline workaround_msvc_stl_support() : T() {}
65  inline workaround_msvc_stl_support(const T& other) : T(other) {}
66  inline operator T& () { return *static_cast<T*>(this); }
67  inline operator const T& () const { return *static_cast<const T*>(this); }
68  template<typename OtherT>
69  inline T& operator=(const OtherT& other)
70  { T::operator=(other); return *this; }
71  inline workaround_msvc_stl_support& operator=(const workaround_msvc_stl_support& other)
72  { T::operator=(other); return *this; }
73  };
74  }
75 
76 #else
77 
78 #define EIGEN_WORKAROUND_MSVC_STL_SUPPORT(T) T
79 
80 #endif
81 
82 }
83 
84 #endif // EIGEN_STL_DETAILS_H
Definition: LDLT.h:16