diff options
author | Gael Guennebaud <g.gael@free.fr> | 2016-04-26 11:20:25 +0200 |
---|---|---|
committer | Gael Guennebaud <g.gael@free.fr> | 2016-04-26 11:20:25 +0200 |
commit | 3dddd341334975d4f71f4f7ca15c48aaa920c57d (patch) | |
tree | 169bc8841dbc02e236bcf17fdef053b53c36f0e3 /unsupported/Eigen/CXX11/src/util | |
parent | 4a164d2c465e494406ccfa663eb35e2e114e5292 (diff) |
Refactor the unsupported CXX11/Core module to internal headers only.
Diffstat (limited to 'unsupported/Eigen/CXX11/src/util')
-rw-r--r-- | unsupported/Eigen/CXX11/src/util/CMakeLists.txt | 6 | ||||
-rw-r--r-- | unsupported/Eigen/CXX11/src/util/CXX11Meta.h | 542 | ||||
-rw-r--r-- | unsupported/Eigen/CXX11/src/util/CXX11Workarounds.h | 88 | ||||
-rw-r--r-- | unsupported/Eigen/CXX11/src/util/EmulateArray.h | 267 | ||||
-rw-r--r-- | unsupported/Eigen/CXX11/src/util/EmulateCXX11Meta.h | 311 | ||||
-rw-r--r-- | unsupported/Eigen/CXX11/src/util/MaxSizeVector.h | 130 |
6 files changed, 1344 insertions, 0 deletions
diff --git a/unsupported/Eigen/CXX11/src/util/CMakeLists.txt b/unsupported/Eigen/CXX11/src/util/CMakeLists.txt new file mode 100644 index 000000000..7eab492d6 --- /dev/null +++ b/unsupported/Eigen/CXX11/src/util/CMakeLists.txt @@ -0,0 +1,6 @@ +FILE(GLOB Eigen_CXX11_util_SRCS "*.h") + +INSTALL(FILES + ${Eigen_CXX11_util_SRCS} + DESTINATION ${INCLUDE_INSTALL_DIR}/unsupported/Eigen/CXX11/src/util COMPONENT Devel + ) diff --git a/unsupported/Eigen/CXX11/src/util/CXX11Meta.h b/unsupported/Eigen/CXX11/src/util/CXX11Meta.h new file mode 100644 index 000000000..f479590b9 --- /dev/null +++ b/unsupported/Eigen/CXX11/src/util/CXX11Meta.h @@ -0,0 +1,542 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2013 Christian Seiler <christian@iwakd.de> +// +// 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_CXX11META_H +#define EIGEN_CXX11META_H + +#include <vector> +#include "EmulateArray.h" + +// Emulate the cxx11 functionality that we need if the compiler doesn't support it. +// Visual studio 2015 doesn't advertise itself as cxx11 compliant, although it +// supports enough of the standard for our needs +#if __cplusplus > 199711L || EIGEN_COMP_MSVC >= 1900 + +#include "CXX11Workarounds.h" + +namespace Eigen { + +namespace internal { + +/** \internal + * \file CXX11/util/CXX11Meta.h + * This file contains generic metaprogramming classes which are not specifically related to Eigen. + * This file expands upon Core/util/Meta.h and adds support for C++11 specific features. + */ + +template<typename... tt> +struct type_list { constexpr static int count = sizeof...(tt); }; + +template<typename t, typename... tt> +struct type_list<t, tt...> { constexpr static int count = sizeof...(tt) + 1; typedef t first_type; }; + +template<typename T, T... nn> +struct numeric_list { constexpr static std::size_t count = sizeof...(nn); }; + +template<typename T, T n, T... nn> +struct numeric_list<T, n, nn...> { constexpr static std::size_t count = sizeof...(nn) + 1; constexpr static T first_value = n; }; + +/* numeric list constructors + * + * equivalencies: + * constructor result + * typename gen_numeric_list<int, 5>::type numeric_list<int, 0,1,2,3,4> + * typename gen_numeric_list_reversed<int, 5>::type numeric_list<int, 4,3,2,1,0> + * typename gen_numeric_list_swapped_pair<int, 5,1,2>::type numeric_list<int, 0,2,1,3,4> + * typename gen_numeric_list_repeated<int, 0, 5>::type numeric_list<int, 0,0,0,0,0> + */ + +template<typename T, std::size_t n, T start = 0, T... ii> struct gen_numeric_list : gen_numeric_list<T, n-1, start, start + n-1, ii...> {}; +template<typename T, T start, T... ii> struct gen_numeric_list<T, 0, start, ii...> { typedef numeric_list<T, ii...> type; }; + +template<typename T, std::size_t n, T start = 0, T... ii> struct gen_numeric_list_reversed : gen_numeric_list_reversed<T, n-1, start, ii..., start + n-1> {}; +template<typename T, T start, T... ii> struct gen_numeric_list_reversed<T, 0, start, ii...> { typedef numeric_list<T, ii...> type; }; + +template<typename T, std::size_t n, T a, T b, T start = 0, T... ii> struct gen_numeric_list_swapped_pair : gen_numeric_list_swapped_pair<T, n-1, a, b, start, (start + n-1) == a ? b : ((start + n-1) == b ? a : (start + n-1)), ii...> {}; +template<typename T, T a, T b, T start, T... ii> struct gen_numeric_list_swapped_pair<T, 0, a, b, start, ii...> { typedef numeric_list<T, ii...> type; }; + +template<typename T, std::size_t n, T V, T... nn> struct gen_numeric_list_repeated : gen_numeric_list_repeated<T, n-1, V, V, nn...> {}; +template<typename T, T V, T... nn> struct gen_numeric_list_repeated<T, 0, V, nn...> { typedef numeric_list<T, nn...> type; }; + +/* list manipulation: concatenate */ + +template<class a, class b> struct concat; + +template<typename... as, typename... bs> struct concat<type_list<as...>, type_list<bs...>> { typedef type_list<as..., bs...> type; }; +template<typename T, T... as, T... bs> struct concat<numeric_list<T, as...>, numeric_list<T, bs...> > { typedef numeric_list<T, as..., bs...> type; }; + +template<typename... p> struct mconcat; +template<typename a> struct mconcat<a> { typedef a type; }; +template<typename a, typename b> struct mconcat<a, b> : concat<a, b> {}; +template<typename a, typename b, typename... cs> struct mconcat<a, b, cs...> : concat<a, typename mconcat<b, cs...>::type> {}; + +/* list manipulation: extract slices */ + +template<int n, typename x> struct take; +template<int n, typename a, typename... as> struct take<n, type_list<a, as...>> : concat<type_list<a>, typename take<n-1, type_list<as...>>::type> {}; +template<int n> struct take<n, type_list<>> { typedef type_list<> type; }; +template<typename a, typename... as> struct take<0, type_list<a, as...>> { typedef type_list<> type; }; +template<> struct take<0, type_list<>> { typedef type_list<> type; }; + +template<typename T, int n, T a, T... as> struct take<n, numeric_list<T, a, as...>> : concat<numeric_list<T, a>, typename take<n-1, numeric_list<T, as...>>::type> {}; +template<typename T, int n> struct take<n, numeric_list<T>> { typedef numeric_list<T> type; }; +template<typename T, T a, T... as> struct take<0, numeric_list<T, a, as...>> { typedef numeric_list<T> type; }; +template<typename T> struct take<0, numeric_list<T>> { typedef numeric_list<T> type; }; + +template<typename T, int n, T... ii> struct h_skip_helper_numeric; +template<typename T, int n, T i, T... ii> struct h_skip_helper_numeric<T, n, i, ii...> : h_skip_helper_numeric<T, n-1, ii...> {}; +template<typename T, T i, T... ii> struct h_skip_helper_numeric<T, 0, i, ii...> { typedef numeric_list<T, i, ii...> type; }; +template<typename T, int n> struct h_skip_helper_numeric<T, n> { typedef numeric_list<T> type; }; +template<typename T> struct h_skip_helper_numeric<T, 0> { typedef numeric_list<T> type; }; + +template<int n, typename... tt> struct h_skip_helper_type; +template<int n, typename t, typename... tt> struct h_skip_helper_type<n, t, tt...> : h_skip_helper_type<n-1, tt...> {}; +template<typename t, typename... tt> struct h_skip_helper_type<0, t, tt...> { typedef type_list<t, tt...> type; }; +template<int n> struct h_skip_helper_type<n> { typedef type_list<> type; }; +template<> struct h_skip_helper_type<0> { typedef type_list<> type; }; + +template<int n> +struct h_skip { + template<typename T, T... ii> + constexpr static inline typename h_skip_helper_numeric<T, n, ii...>::type helper(numeric_list<T, ii...>) { return typename h_skip_helper_numeric<T, n, ii...>::type(); } + template<typename... tt> + constexpr static inline typename h_skip_helper_type<n, tt...>::type helper(type_list<tt...>) { return typename h_skip_helper_type<n, tt...>::type(); } +}; + +template<int n, typename a> struct skip { typedef decltype(h_skip<n>::helper(a())) type; }; + +template<int start, int count, typename a> struct slice : take<count, typename skip<start, a>::type> {}; + +/* list manipulation: retrieve single element from list */ + +template<int n, typename x> struct get; + +template<int n, typename a, typename... as> struct get<n, type_list<a, as...>> : get<n-1, type_list<as...>> {}; +template<typename a, typename... as> struct get<0, type_list<a, as...>> { typedef a type; }; + +template<typename T, int n, T a, T... as> struct get<n, numeric_list<T, a, as...>> : get<n-1, numeric_list<T, as...>> {}; +template<typename T, T a, T... as> struct get<0, numeric_list<T, a, as...>> { constexpr static T value = a; }; + +/* always get type, regardless of dummy; good for parameter pack expansion */ + +template<typename T, T dummy, typename t> struct id_numeric { typedef t type; }; +template<typename dummy, typename t> struct id_type { typedef t type; }; + +/* equality checking, flagged version */ + +template<typename a, typename b> struct is_same_gf : is_same<a, b> { constexpr static int global_flags = 0; }; + +/* apply_op to list */ + +template< + bool from_left, // false + template<typename, typename> class op, + typename additional_param, + typename... values +> +struct h_apply_op_helper { typedef type_list<typename op<values, additional_param>::type...> type; }; +template< + template<typename, typename> class op, + typename additional_param, + typename... values +> +struct h_apply_op_helper<true, op, additional_param, values...> { typedef type_list<typename op<additional_param, values>::type...> type; }; + +template< + bool from_left, + template<typename, typename> class op, + typename additional_param +> +struct h_apply_op +{ + template<typename... values> + constexpr static typename h_apply_op_helper<from_left, op, additional_param, values...>::type helper(type_list<values...>) + { return typename h_apply_op_helper<from_left, op, additional_param, values...>::type(); } +}; + +template< + template<typename, typename> class op, + typename additional_param, + typename a +> +struct apply_op_from_left { typedef decltype(h_apply_op<true, op, additional_param>::helper(a())) type; }; + +template< + template<typename, typename> class op, + typename additional_param, + typename a +> +struct apply_op_from_right { typedef decltype(h_apply_op<false, op, additional_param>::helper(a())) type; }; + +/* see if an element is in a list */ + +template< + template<typename, typename> class test, + typename check_against, + typename h_list, + bool last_check_positive = false +> +struct contained_in_list; + +template< + template<typename, typename> class test, + typename check_against, + typename h_list +> +struct contained_in_list<test, check_against, h_list, true> +{ + constexpr static bool value = true; +}; + +template< + template<typename, typename> class test, + typename check_against, + typename a, + typename... as +> +struct contained_in_list<test, check_against, type_list<a, as...>, false> : contained_in_list<test, check_against, type_list<as...>, test<check_against, a>::value> {}; + +template< + template<typename, typename> class test, + typename check_against + EIGEN_TPL_PP_SPEC_HACK_DEFC(typename, empty) +> +struct contained_in_list<test, check_against, type_list<EIGEN_TPL_PP_SPEC_HACK_USE(empty)>, false> { constexpr static bool value = false; }; + +/* see if an element is in a list and check for global flags */ + +template< + template<typename, typename> class test, + typename check_against, + typename h_list, + int default_flags = 0, + bool last_check_positive = false, + int last_check_flags = default_flags +> +struct contained_in_list_gf; + +template< + template<typename, typename> class test, + typename check_against, + typename h_list, + int default_flags, + int last_check_flags +> +struct contained_in_list_gf<test, check_against, h_list, default_flags, true, last_check_flags> +{ + constexpr static bool value = true; + constexpr static int global_flags = last_check_flags; +}; + +template< + template<typename, typename> class test, + typename check_against, + typename a, + typename... as, + int default_flags, + int last_check_flags +> +struct contained_in_list_gf<test, check_against, type_list<a, as...>, default_flags, false, last_check_flags> : contained_in_list_gf<test, check_against, type_list<as...>, default_flags, test<check_against, a>::value, test<check_against, a>::global_flags> {}; + +template< + template<typename, typename> class test, + typename check_against + EIGEN_TPL_PP_SPEC_HACK_DEFC(typename, empty), + int default_flags, + int last_check_flags +> +struct contained_in_list_gf<test, check_against, type_list<EIGEN_TPL_PP_SPEC_HACK_USE(empty)>, default_flags, false, last_check_flags> { constexpr static bool value = false; constexpr static int global_flags = default_flags; }; + +/* generic reductions */ + +template< + typename Reducer, + typename... Ts +> struct reduce; + +template< + typename Reducer +> struct reduce<Reducer> +{ + constexpr static inline int run() { return Reducer::Identity; } +}; + +template< + typename Reducer, + typename A +> struct reduce<Reducer, A> +{ + constexpr static inline A run(A a) { return a; } +}; + +template< + typename Reducer, + typename A, + typename... Ts +> struct reduce<Reducer, A, Ts...> +{ + constexpr static inline auto run(A a, Ts... ts) -> decltype(Reducer::run(a, reduce<Reducer, Ts...>::run(ts...))) { + return Reducer::run(a, reduce<Reducer, Ts...>::run(ts...)); + } +}; + +/* generic binary operations */ + +struct sum_op { + template<typename A, typename B> EIGEN_DEVICE_FUNC constexpr static inline auto run(A a, B b) -> decltype(a + b) { return a + b; } + static constexpr int Identity = 0; +}; +struct product_op { + template<typename A, typename B> EIGEN_DEVICE_FUNC constexpr static inline auto run(A a, B b) -> decltype(a * b) { return a * b; } + static constexpr int Identity = 1; +}; + +struct logical_and_op { template<typename A, typename B> constexpr static inline auto run(A a, B b) -> decltype(a && b) { return a && b; } }; +struct logical_or_op { template<typename A, typename B> constexpr static inline auto run(A a, B b) -> decltype(a || b) { return a || b; } }; + +struct equal_op { template<typename A, typename B> constexpr static inline auto run(A a, B b) -> decltype(a == b) { return a == b; } }; +struct not_equal_op { template<typename A, typename B> constexpr static inline auto run(A a, B b) -> decltype(a != b) { return a != b; } }; +struct lesser_op { template<typename A, typename B> constexpr static inline auto run(A a, B b) -> decltype(a < b) { return a < b; } }; +struct lesser_equal_op { template<typename A, typename B> constexpr static inline auto run(A a, B b) -> decltype(a <= b) { return a <= b; } }; +struct greater_op { template<typename A, typename B> constexpr static inline auto run(A a, B b) -> decltype(a > b) { return a > b; } }; +struct greater_equal_op { template<typename A, typename B> constexpr static inline auto run(A a, B b) -> decltype(a >= b) { return a >= b; } }; + +/* generic unary operations */ + +struct not_op { template<typename A> constexpr static inline auto run(A a) -> decltype(!a) { return !a; } }; +struct negation_op { template<typename A> constexpr static inline auto run(A a) -> decltype(-a) { return -a; } }; +struct greater_equal_zero_op { template<typename A> constexpr static inline auto run(A a) -> decltype(a >= 0) { return a >= 0; } }; + + +/* reductions for lists */ + +// using auto -> return value spec makes ICC 13.0 and 13.1 crash here, so we have to hack it +// together in front... (13.0 doesn't work with array_prod/array_reduce/... anyway, but 13.1 +// does... +template<typename... Ts> +constexpr inline decltype(reduce<product_op, Ts...>::run((*((Ts*)0))...)) arg_prod(Ts... ts) +{ + return reduce<product_op, Ts...>::run(ts...); +} + +template<typename... Ts> +constexpr inline decltype(reduce<sum_op, Ts...>::run((*((Ts*)0))...)) arg_sum(Ts... ts) +{ + return reduce<sum_op, Ts...>::run(ts...); +} + +/* reverse arrays */ + +template<typename Array, int... n> +constexpr inline Array h_array_reverse(Array arr, numeric_list<int, n...>) +{ + return {{array_get<sizeof...(n) - n - 1>(arr)...}}; +} + +template<typename T, std::size_t N> +constexpr inline array<T, N> array_reverse(array<T, N> arr) +{ + return h_array_reverse(arr, typename gen_numeric_list<int, N>::type()); +} + + +/* generic array reductions */ + +// can't reuse standard reduce() interface above because Intel's Compiler +// *really* doesn't like it, so we just reimplement the stuff +// (start from N - 1 and work down to 0 because specialization for +// n == N - 1 also doesn't work in Intel's compiler, so it goes into +// an infinite loop) +template<typename Reducer, typename T, std::size_t N, std::size_t n = N - 1> +struct h_array_reduce { + EIGEN_DEVICE_FUNC constexpr static inline auto run(array<T, N> arr, T identity) -> decltype(Reducer::run(h_array_reduce<Reducer, T, N, n - 1>::run(arr, identity), array_get<n>(arr))) + { + return Reducer::run(h_array_reduce<Reducer, T, N, n - 1>::run(arr, identity), array_get<n>(arr)); + } +}; + +template<typename Reducer, typename T, std::size_t N> +struct h_array_reduce<Reducer, T, N, 0> +{ + EIGEN_DEVICE_FUNC constexpr static inline T run(const array<T, N>& arr, T) + { + return array_get<0>(arr); + } +}; + +template<typename Reducer, typename T> +struct h_array_reduce<Reducer, T, 0> +{ + EIGEN_DEVICE_FUNC constexpr static inline T run(const array<T, 0>&, T identity) + { + return identity; + } +}; + +template<typename Reducer, typename T, std::size_t N> +EIGEN_DEVICE_FUNC constexpr inline auto array_reduce(const array<T, N>& arr, T identity) -> decltype(h_array_reduce<Reducer, T, N>::run(arr, identity)) +{ + return h_array_reduce<Reducer, T, N>::run(arr, identity); +} + +/* standard array reductions */ + +template<typename T, std::size_t N> +EIGEN_DEVICE_FUNC constexpr inline auto array_sum(const array<T, N>& arr) -> decltype(array_reduce<sum_op, T, N>(arr, static_cast<T>(0))) +{ + return array_reduce<sum_op, T, N>(arr, static_cast<T>(0)); +} + +template<typename T, std::size_t N> +EIGEN_DEVICE_FUNC constexpr inline auto array_prod(const array<T, N>& arr) -> decltype(array_reduce<product_op, T, N>(arr, static_cast<T>(1))) +{ + return array_reduce<product_op, T, N>(arr, static_cast<T>(1)); +} + +template<typename t> +EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE t array_prod(const std::vector<t>& a) { + eigen_assert(a.size() > 0); + t prod = 1; + for (size_t i = 0; i < a.size(); ++i) { prod *= a[i]; } + return prod; +} + +/* zip an array */ + +template<typename Op, typename A, typename B, std::size_t N, int... n> +constexpr inline array<decltype(Op::run(A(), B())),N> h_array_zip(array<A, N> a, array<B, N> b, numeric_list<int, n...>) +{ + return array<decltype(Op::run(A(), B())),N>{{ Op::run(array_get<n>(a), array_get<n>(b))... }}; +} + +template<typename Op, typename A, typename B, std::size_t N> +constexpr inline array<decltype(Op::run(A(), B())),N> array_zip(array<A, N> a, array<B, N> b) +{ + return h_array_zip<Op>(a, b, typename gen_numeric_list<int, N>::type()); +} + +/* zip an array and reduce the result */ + +template<typename Reducer, typename Op, typename A, typename B, std::size_t N, int... n> +constexpr inline auto h_array_zip_and_reduce(array<A, N> a, array<B, N> b, numeric_list<int, n...>) -> decltype(reduce<Reducer, typename id_numeric<int,n,decltype(Op::run(A(), B()))>::type...>::run(Op::run(array_get<n>(a), array_get<n>(b))...)) +{ + return reduce<Reducer, typename id_numeric<int,n,decltype(Op::run(A(), B()))>::type...>::run(Op::run(array_get<n>(a), array_get<n>(b))...); +} + +template<typename Reducer, typename Op, typename A, typename B, std::size_t N> +constexpr inline auto array_zip_and_reduce(array<A, N> a, array<B, N> b) -> decltype(h_array_zip_and_reduce<Reducer, Op, A, B, N>(a, b, typename gen_numeric_list<int, N>::type())) +{ + return h_array_zip_and_reduce<Reducer, Op, A, B, N>(a, b, typename gen_numeric_list<int, N>::type()); +} + +/* apply stuff to an array */ + +template<typename Op, typename A, std::size_t N, int... n> +constexpr inline array<decltype(Op::run(A())),N> h_array_apply(array<A, N> a, numeric_list<int, n...>) +{ + return array<decltype(Op::run(A())),N>{{ Op::run(array_get<n>(a))... }}; +} + +template<typename Op, typename A, std::size_t N> +constexpr inline array<decltype(Op::run(A())),N> array_apply(array<A, N> a) +{ + return h_array_apply<Op>(a, typename gen_numeric_list<int, N>::type()); +} + +/* apply stuff to an array and reduce */ + +template<typename Reducer, typename Op, typename A, std::size_t N, int... n> +constexpr inline auto h_array_apply_and_reduce(array<A, N> arr, numeric_list<int, n...>) -> decltype(reduce<Reducer, typename id_numeric<int,n,decltype(Op::run(A()))>::type...>::run(Op::run(array_get<n>(arr))...)) +{ + return reduce<Reducer, typename id_numeric<int,n,decltype(Op::run(A()))>::type...>::run(Op::run(array_get<n>(arr))...); +} + +template<typename Reducer, typename Op, typename A, std::size_t N> +constexpr inline auto array_apply_and_reduce(array<A, N> a) -> decltype(h_array_apply_and_reduce<Reducer, Op, A, N>(a, typename gen_numeric_list<int, N>::type())) +{ + return h_array_apply_and_reduce<Reducer, Op, A, N>(a, typename gen_numeric_list<int, N>::type()); +} + +/* repeat a value n times (and make an array out of it + * usage: + * array<int, 16> = repeat<16>(42); + */ + +template<int n> +struct h_repeat +{ + template<typename t, int... ii> + constexpr static inline array<t, n> run(t v, numeric_list<int, ii...>) + { + return {{ typename id_numeric<int, ii, t>::type(v)... }}; + } +}; + +template<int n, typename t> +constexpr array<t, n> repeat(t v) { return h_repeat<n>::run(v, typename gen_numeric_list<int, n>::type()); } + +/* instantiate a class by a C-style array */ +template<class InstType, typename ArrType, std::size_t N, bool Reverse, typename... Ps> +struct h_instantiate_by_c_array; + +template<class InstType, typename ArrType, std::size_t N, typename... Ps> +struct h_instantiate_by_c_array<InstType, ArrType, N, false, Ps...> +{ + static InstType run(ArrType* arr, Ps... args) + { + return h_instantiate_by_c_array<InstType, ArrType, N - 1, false, Ps..., ArrType>::run(arr + 1, args..., arr[0]); + } +}; + +template<class InstType, typename ArrType, std::size_t N, typename... Ps> +struct h_instantiate_by_c_array<InstType, ArrType, N, true, Ps...> +{ + static InstType run(ArrType* arr, Ps... args) + { + return h_instantiate_by_c_array<InstType, ArrType, N - 1, false, ArrType, Ps...>::run(arr + 1, arr[0], args...); + } +}; + +template<class InstType, typename ArrType, typename... Ps> +struct h_instantiate_by_c_array<InstType, ArrType, 0, false, Ps...> +{ + static InstType run(ArrType* arr, Ps... args) + { + (void)arr; + return InstType(args...); + } +}; + +template<class InstType, typename ArrType, typename... Ps> +struct h_instantiate_by_c_array<InstType, ArrType, 0, true, Ps...> +{ + static InstType run(ArrType* arr, Ps... args) + { + (void)arr; + return InstType(args...); + } +}; + +template<class InstType, typename ArrType, std::size_t N, bool Reverse = false> +InstType instantiate_by_c_array(ArrType* arr) +{ + return h_instantiate_by_c_array<InstType, ArrType, N, Reverse>::run(arr); +} + +} // end namespace internal + +} // end namespace Eigen + +#else // Non C++11, fallback to emulation mode + +#include "src/Core/util/EmulateCXX11Meta.h" + +#endif + +#endif // EIGEN_CXX11META_H diff --git a/unsupported/Eigen/CXX11/src/util/CXX11Workarounds.h b/unsupported/Eigen/CXX11/src/util/CXX11Workarounds.h new file mode 100644 index 000000000..fe4d22803 --- /dev/null +++ b/unsupported/Eigen/CXX11/src/util/CXX11Workarounds.h @@ -0,0 +1,88 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2013 Christian Seiler <christian@iwakd.de> +// +// 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_CXX11WORKAROUNDS_H +#define EIGEN_CXX11WORKAROUNDS_H + +/* COMPATIBILITY CHECKS + * (so users of compilers that are too old get some realistic error messages) + */ +#if defined(__INTEL_COMPILER) && (__INTEL_COMPILER < 1310) +#error Intel Compiler only supports required C++ features since version 13.1. +// note that most stuff in principle works with 13.0 but when combining +// some features, at some point 13.0 will just fail with an internal assertion +#elif defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)) +// G++ < 4.6 by default will continue processing the source files - even if we use #error to make +// it error out. For this reason, we use the pragma to make sure G++ aborts at the first error +// it sees. Unfortunately, that is still not our #error directive, but at least the output is +// short enough the user has a chance to see that the compiler version is not sufficient for +// the funky template mojo we use. +#pragma GCC diagnostic error "-Wfatal-errors" +#error GNU C++ Compiler (g++) only supports required C++ features since version 4.6. +#endif + +/* Check that the compiler at least claims to support C++11. It might not be sufficient + * because the compiler may not implement it correctly, but at least we'll know. + * On the other hand, visual studio still doesn't claim to support C++11 although it's + * compliant enugh for our purpose. + */ +#if (__cplusplus <= 199711L) && (EIGEN_COMP_MSVC < 1900) +#if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER) +#pragma GCC diagnostic error "-Wfatal-errors" +#endif +#error This library needs at least a C++11 compliant compiler. If you use g++/clang, please enable the -std=c++11 compiler flag. (-std=c++0x on older versions.) +#endif + +namespace Eigen { + +namespace internal { + +/* std::get is only constexpr in C++14, not yet in C++11 + */ + + +template<std::size_t I, class T> constexpr inline T& array_get(std::vector<T>& a) { return a[I]; } +template<std::size_t I, class T> constexpr inline T&& array_get(std::vector<T>&& a) { return a[I]; } +template<std::size_t I, class T> constexpr inline T const& array_get(std::vector<T> const& a) { return a[I]; } + +/* Suppose you have a template of the form + * template<typename T> struct X; + * And you want to specialize it in such a way: + * template<typename S1, typename... SN> struct X<Foo<S1, SN...>> { ::: }; + * template<> struct X<Foo<>> { ::: }; + * This will work in Intel's compiler 13.0, but only to some extent in g++ 4.6, since + * g++ can only match templates called with parameter packs if the number of template + * arguments is not a fixed size (so inside the first specialization, referencing + * X<Foo<Sn...>> will fail in g++). On the other hand, g++ will accept the following: + * template<typename S...> struct X<Foo<S...>> { ::: }: + * as an additional (!) specialization, which will then only match the empty case. + * But Intel's compiler 13.0 won't accept that, it will only accept the empty syntax, + * so we have to create a workaround for this. + */ +#if defined(__GNUC__) && !defined(__INTEL_COMPILER) +#define EIGEN_TPL_PP_SPEC_HACK_DEF(mt, n) mt... n +#define EIGEN_TPL_PP_SPEC_HACK_DEFC(mt, n) , EIGEN_TPL_PP_SPEC_HACK_DEF(mt, n) +#define EIGEN_TPL_PP_SPEC_HACK_USE(n) n... +#define EIGEN_TPL_PP_SPEC_HACK_USEC(n) , n... +#else +#define EIGEN_TPL_PP_SPEC_HACK_DEF(mt, n) +#define EIGEN_TPL_PP_SPEC_HACK_DEFC(mt, n) +#define EIGEN_TPL_PP_SPEC_HACK_USE(n) +#define EIGEN_TPL_PP_SPEC_HACK_USEC(n) +#endif + +} // end namespace internal + +} // end namespace Eigen + +#endif // EIGEN_CXX11WORKAROUNDS_H + +/* + * kate: space-indent on; indent-width 2; mixedindent off; indent-mode cstyle; + */ diff --git a/unsupported/Eigen/CXX11/src/util/EmulateArray.h b/unsupported/Eigen/CXX11/src/util/EmulateArray.h new file mode 100644 index 000000000..24159e54c --- /dev/null +++ b/unsupported/Eigen/CXX11/src/util/EmulateArray.h @@ -0,0 +1,267 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@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_EMULATE_ARRAY_H +#define EIGEN_EMULATE_ARRAY_H + + + +// The array class is only available starting with cxx11. Emulate our own here +// if needed. Beware, msvc still doesn't advertise itself as a c++11 compiler! +// Moreover, CUDA doesn't support the STL containers, so we use our own instead. +#if (__cplusplus <= 199711L && EIGEN_COMP_MSVC < 1900) || defined(__CUDACC__) || defined(EIGEN_AVOID_STL_ARRAY) + +namespace Eigen { +template <typename T, size_t n> class array { + public: + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE T& operator[] (size_t index) { return values[index]; } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE const T& operator[] (size_t index) const { return values[index]; } + + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE T& front() { return values[0]; } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE const T& front() const { return values[0]; } + + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE T& back() { return values[n-1]; } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE const T& back() const { return values[n-1]; } + + EIGEN_DEVICE_FUNC EIGEN_ALWAYS_INLINE + static std::size_t size() { return n; } + + T values[n]; + + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE array() { } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE array(const T& v) { + EIGEN_STATIC_ASSERT(n==1, YOU_MADE_A_PROGRAMMING_MISTAKE) + values[0] = v; + } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE array(const T& v1, const T& v2) { + EIGEN_STATIC_ASSERT(n==2, YOU_MADE_A_PROGRAMMING_MISTAKE) + values[0] = v1; + values[1] = v2; + } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE array(const T& v1, const T& v2, const T& v3) { + EIGEN_STATIC_ASSERT(n==3, YOU_MADE_A_PROGRAMMING_MISTAKE) + values[0] = v1; + values[1] = v2; + values[2] = v3; + } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE array(const T& v1, const T& v2, const T& v3, + const T& v4) { + EIGEN_STATIC_ASSERT(n==4, YOU_MADE_A_PROGRAMMING_MISTAKE) + values[0] = v1; + values[1] = v2; + values[2] = v3; + values[3] = v4; + } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE array(const T& v1, const T& v2, const T& v3, const T& v4, + const T& v5) { + EIGEN_STATIC_ASSERT(n==5, YOU_MADE_A_PROGRAMMING_MISTAKE) + values[0] = v1; + values[1] = v2; + values[2] = v3; + values[3] = v4; + values[4] = v5; + } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE array(const T& v1, const T& v2, const T& v3, const T& v4, + const T& v5, const T& v6) { + EIGEN_STATIC_ASSERT(n==6, YOU_MADE_A_PROGRAMMING_MISTAKE) + values[0] = v1; + values[1] = v2; + values[2] = v3; + values[3] = v4; + values[4] = v5; + values[5] = v6; + } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE array(const T& v1, const T& v2, const T& v3, const T& v4, + const T& v5, const T& v6, const T& v7) { + EIGEN_STATIC_ASSERT(n==7, YOU_MADE_A_PROGRAMMING_MISTAKE) + values[0] = v1; + values[1] = v2; + values[2] = v3; + values[3] = v4; + values[4] = v5; + values[5] = v6; + values[6] = v7; + } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE array( + const T& v1, const T& v2, const T& v3, const T& v4, + const T& v5, const T& v6, const T& v7, const T& v8) { + EIGEN_STATIC_ASSERT(n==8, YOU_MADE_A_PROGRAMMING_MISTAKE) + values[0] = v1; + values[1] = v2; + values[2] = v3; + values[3] = v4; + values[4] = v5; + values[5] = v6; + values[6] = v7; + values[7] = v8; + } + +#ifdef EIGEN_HAS_VARIADIC_TEMPLATES + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE array(std::initializer_list<T> l) { + eigen_assert(l.size() == n); + internal::smart_copy(l.begin(), l.end(), values); + } +#endif +}; + + +// Specialize array for zero size +template <typename T> class array<T, 0> { + public: + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE T& operator[] (size_t) { + eigen_assert(false && "Can't index a zero size array"); + return dummy; + } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE const T& operator[] (size_t) const { + eigen_assert(false && "Can't index a zero size array"); + return dummy; + } + + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE T& front() { + eigen_assert(false && "Can't index a zero size array"); + return dummy; + } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE const T& front() const { + eigen_assert(false && "Can't index a zero size array"); + return dummy; + } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE T& back() { + eigen_assert(false && "Can't index a zero size array"); + return dummy; + } + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE const T& back() const { + eigen_assert(false && "Can't index a zero size array"); + return dummy; + } + + static EIGEN_DEVICE_FUNC EIGEN_ALWAYS_INLINE std::size_t size() { return 0; } + + EIGEN_DEVICE_FUNC + EIGEN_STRONG_INLINE array() : dummy() { } + +#ifdef EIGEN_HAS_VARIADIC_TEMPLATES + EIGEN_DEVICE_FUNC array(std::initializer_list<T> l) : dummy() { + eigen_assert(l.size() == 0); + } +#endif + + private: + T dummy; +}; + +// Comparison operator +// Todo: implement !=, <, <=, >, and >= +template<class T, std::size_t N> +EIGEN_DEVICE_FUNC bool operator==(const array<T,N>& lhs, const array<T,N>& rhs) { + for (std::size_t i = 0; i < N; ++i) { + if (lhs[i] != rhs[i]) { + return false; + } + } + return true; +} + + +namespace internal { +template<std::size_t I, class T, std::size_t N> +EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE T& array_get(array<T,N>& a) { + return a[I]; +} +template<std::size_t I, class T, std::size_t N> +EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE const T& array_get(const array<T,N>& a) { + return a[I]; +} + +template <typename T> struct array_size; +template<class T, std::size_t N> struct array_size<array<T,N> > { + static const size_t value = N; +}; +template <typename T> struct array_size; +template<class T, std::size_t N> struct array_size<array<T,N>& > { + static const size_t value = N; +}; +template <typename T> struct array_size; +template<class T, std::size_t N> struct array_size<const array<T,N> > { + static const size_t value = N; +}; +template <typename T> struct array_size; +template<class T, std::size_t N> struct array_size<const array<T,N>& > { + static const size_t value = N; +}; + +} // end namespace internal +} // end namespace Eigen + +#else + +// The compiler supports c++11, and we're not targetting cuda: use std::array as Eigen::array +#include <array> +namespace Eigen { + +template <typename T, std::size_t N> using array = std::array<T, N>; + +namespace internal { +/* std::get is only constexpr in C++14, not yet in C++11 + * - libstdc++ from version 4.7 onwards has it nevertheless, + * so use that + * - libstdc++ older versions: use _M_instance directly + * - libc++ all versions so far: use __elems_ directly + * - all other libs: use std::get to be portable, but + * this may not be constexpr + */ +#if defined(__GLIBCXX__) && __GLIBCXX__ < 20120322 +#define STD_GET_ARR_HACK a._M_instance[I] +#elif defined(_LIBCPP_VERSION) +#define STD_GET_ARR_HACK a.__elems_[I] +#else +#define STD_GET_ARR_HACK std::template get<I, T, N>(a) +#endif + +template<std::size_t I, class T, std::size_t N> constexpr inline T& array_get(std::array<T,N>& a) { return (T&) STD_GET_ARR_HACK; } +template<std::size_t I, class T, std::size_t N> constexpr inline T&& array_get(std::array<T,N>&& a) { return (T&&) STD_GET_ARR_HACK; } +template<std::size_t I, class T, std::size_t N> constexpr inline T const& array_get(std::array<T,N> const& a) { return (T const&) STD_GET_ARR_HACK; } + +#undef STD_GET_ARR_HACK + +template <typename T> struct array_size; +template<class T, std::size_t N> struct array_size<const std::array<T,N> > { + static const size_t value = N; +}; +template <typename T> struct array_size; +template<class T, std::size_t N> struct array_size<std::array<T,N> > { + static const size_t value = N; +}; +} // end namespace internal +} // end namespace Eigen + +#endif + +#endif // EIGEN_EMULATE_ARRAY_H diff --git a/unsupported/Eigen/CXX11/src/util/EmulateCXX11Meta.h b/unsupported/Eigen/CXX11/src/util/EmulateCXX11Meta.h new file mode 100644 index 000000000..f3aa1b144 --- /dev/null +++ b/unsupported/Eigen/CXX11/src/util/EmulateCXX11Meta.h @@ -0,0 +1,311 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@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_EMULATE_CXX11_META_H +#define EIGEN_EMULATE_CXX11_META_H + + + +namespace Eigen { + +namespace internal { + +/** \internal + * \file CXX11/util/EmulateCXX11Meta.h + * This file emulates a subset of the functionality provided by CXXMeta.h for + * compilers that don't yet support cxx11 such as nvcc. + */ + +struct empty_list { static const std::size_t count = 0; }; + +template<typename T, typename Tail=empty_list> struct type_list { + typedef T HeadType; + typedef Tail TailType; + static const T head; + static const Tail tail; + static const std::size_t count = 1 + Tail::count; +}; + +struct null_type { }; + +template<typename T1 = null_type, typename T2 = null_type, typename T3 = null_type, + typename T4 = null_type, typename T5 = null_type, typename T6 = null_type, + typename T7 = null_type, typename T8 = null_type> +struct make_type_list { + typedef typename make_type_list<T2, T3, T4, T5, T6, T7, T8>::type tailresult; + + typedef type_list<T1, tailresult> type; +}; + +template<> struct make_type_list<> { + typedef empty_list type; +}; + + +template <std::size_t index, class TList> struct get_type; + +template <class Head, class Tail> +struct get_type<0, type_list<Head, Tail> > +{ + typedef Head type; +}; + +template <std::size_t i, class Head, class Tail> +struct get_type<i, type_list<Head, Tail> > +{ + typedef typename get_type<i-1, Tail>::type type; +}; + + +/* numeric list */ +template <typename T, T n> +struct type2val { + typedef T type; + static const T value = n; +}; + + +template<typename T, size_t n, T V> struct gen_numeric_list_repeated; + +template<typename T, T V> struct gen_numeric_list_repeated<T, 1, V> { + typedef typename make_type_list<type2val<T, V> >::type type; +}; + +template<typename T, T V> struct gen_numeric_list_repeated<T, 2, V> { + typedef typename make_type_list<type2val<T, V>, type2val<T, V> >::type type; +}; + +template<typename T, T V> struct gen_numeric_list_repeated<T, 3, V> { + typedef typename make_type_list<type2val<T, V>, type2val<T, V>, type2val<T, V> >::type type; +}; + +template<typename T, T V> struct gen_numeric_list_repeated<T, 4, V> { + typedef typename make_type_list<type2val<T, V>, type2val<T, V>, type2val<T, V>, type2val<T, V> >::type type; +}; + +template<typename T, T V> struct gen_numeric_list_repeated<T, 5, V> { + typedef typename make_type_list<type2val<T, V>, type2val<T, V>, type2val<T, V>, type2val<T, V>, type2val<T, V> >::type type; +}; + +template<typename T, T V> struct gen_numeric_list_repeated<T, 6, V> { + typedef typename make_type_list<type2val<T, V>, type2val<T, V>, type2val<T, V>, + type2val<T, V>, type2val<T, V>, type2val<T, V> >::type type; +}; + +template<typename T, T V> struct gen_numeric_list_repeated<T, 7, V> { + typedef typename make_type_list<type2val<T, V>, type2val<T, V>, type2val<T, V>, + type2val<T, V>, type2val<T, V>, type2val<T, V>, + type2val<T, V> >::type type; +}; + +template<typename T, T V> struct gen_numeric_list_repeated<T, 8, V> { + typedef typename make_type_list<type2val<T, V>, type2val<T, V>, type2val<T, V>, + type2val<T, V>, type2val<T, V>, type2val<T, V>, + type2val<T, V>, type2val<T, V> >::type type; +}; + + +template <std::size_t index, class NList> struct get; + +template <std::size_t i> +struct get<i, empty_list> +{ + get() { eigen_assert(false && "index overflow"); } + typedef void type; + static const char value = '\0'; +}; + +template <std::size_t i, class Head> +struct get<i, type_list<Head, empty_list> > +{ + get() { eigen_assert(false && "index overflow"); } + typedef void type; + static const char value = '\0'; +}; + +template <class Head> +struct get<0, type_list<Head, empty_list> > +{ + typedef typename Head::type type; + static const type value = Head::value; +}; + +template <class Head, class Tail> +struct get<0, type_list<Head, Tail> > +{ + typedef typename Head::type type; + static const type value = Head::value; +}; + +template <std::size_t i, class Head, class Tail> +struct get<i, type_list<Head, Tail> > +{ + typedef typename Tail::HeadType::type type; + static const type value = get<i-1, Tail>::value; +}; + + +template <class NList> struct arg_prod { + static const typename NList::HeadType::type value = get<0, NList>::value * arg_prod<typename NList::TailType>::value; +}; +template <> struct arg_prod<empty_list> { + static const int value = 1; +}; + + +template<int n, typename t> +array<t, n> repeat(t v) { + array<t, n> array; + array.fill(v); + return array; +} + +template<std::size_t I, class Head, class Tail> +EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE typename Head::type array_get(type_list<Head, Tail>&) { + return get<I, type_list<Head, Tail> >::value; +} +template<std::size_t I, class Head, class Tail> +EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE typename Head::type array_get(const type_list<Head, Tail>&) { + return get<I, type_list<Head, Tail> >::value; +} + +template <class NList> +EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE typename NList::HeadType::type array_prod(const NList&) { + return arg_prod<NList>::value; +} + +template<typename t, std::size_t n> +EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE t array_prod(const array<t, n>& a) { + t prod = 1; + for (size_t i = 0; i < n; ++i) { prod *= a[i]; } + return prod; +} +template<typename t> +EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE t array_prod(const array<t, 0>& /*a*/) { + return 0; +} + +template<typename t> +EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE t array_prod(const std::vector<t>& a) { + eigen_assert(a.size() > 0); + t prod = 1; + for (size_t i = 0; i < a.size(); ++i) { prod *= a[i]; } + return prod; +} + + +template<std::size_t I, class T> +EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE T& array_get(std::vector<T>& a) { + return a[I]; +} +template<std::size_t I, class T> +EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE const T& array_get(const std::vector<T>& a) { + return a[I]; +} + +struct sum_op { + template<typename A, typename B> static inline bool run(A a, B b) { return a + b; } +}; +struct product_op { + template<typename A, typename B> static inline bool run(A a, B b) { return a * b; } +}; + +struct logical_and_op { + template<typename A, typename B> static inline bool run(A a, B b) { return a && b; } +}; +struct logical_or_op { + template<typename A, typename B> static inline bool run(A a, B b) { return a || b; } +}; + +struct equal_op { + template<typename A, typename B> static inline bool run(A a, B b) { return a == b; } +}; +struct not_equal_op { + template<typename A, typename B> static inline bool run(A a, B b) { return a != b; } +}; +struct lesser_op { + template<typename A, typename B> static inline bool run(A a, B b) { return a < b; } +}; +struct lesser_equal_op { + template<typename A, typename B> static inline bool run(A a, B b) { return a <= b; } +}; + +struct greater_op { + template<typename A, typename B> static inline bool run(A a, B b) { return a > b; } +}; +struct greater_equal_op { + template<typename A, typename B> static inline bool run(A a, B b) { return a >= b; } +}; + +struct not_op { + template<typename A> static inline bool run(A a) { return !a; } +}; +struct negation_op { + template<typename A> static inline bool run(A a) { return -a; } +}; +struct greater_equal_zero_op { + template<typename A> static inline bool run(A a) { return a >= 0; } +}; + + +template<typename Reducer, typename Op, typename A, std::size_t N> +struct ArrayApplyAndReduce { + static inline bool run(const array<A, N>& a) { + EIGEN_STATIC_ASSERT(N >= 2, YOU_MADE_A_PROGRAMMING_MISTAKE); + bool result = Reducer::run(Op::run(a[0]), Op::run(a[1])); + for (size_t i = 2; i < N; ++i) { + result = Reducer::run(result, Op::run(a[i])); + } + return result; + } +}; + +template<typename Reducer, typename Op, typename A> +struct ArrayApplyAndReduce<Reducer, Op, A, 1> { + static inline bool run(const array<A, 1>& a) { + return Op::run(a[0]); + } +}; + +template<typename Reducer, typename Op, typename A, std::size_t N> +inline bool array_apply_and_reduce(const array<A, N>& a) { + return ArrayApplyAndReduce<Reducer, Op, A, N>::run(a); +} + +template<typename Reducer, typename Op, typename A, typename B, std::size_t N> +struct ArrayZipAndReduce { + static inline bool run(const array<A, N>& a, const array<B, N>& b) { + EIGEN_STATIC_ASSERT(N >= 2, YOU_MADE_A_PROGRAMMING_MISTAKE); + bool result = Reducer::run(Op::run(a[0], b[0]), Op::run(a[1], b[1])); + for (size_t i = 2; i < N; ++i) { + result = Reducer::run(result, Op::run(a[i], b[i])); + } + return result; + } +}; + +template<typename Reducer, typename Op, typename A, typename B> +struct ArrayZipAndReduce<Reducer, Op, A, B, 1> { + static inline bool run(const array<A, 1>& a, const array<B, 1>& b) { + return Op::run(a[0], b[0]); + } +}; + +template<typename Reducer, typename Op, typename A, typename B, std::size_t N> +inline bool array_zip_and_reduce(const array<A, N>& a, const array<B, N>& b) { + return ArrayZipAndReduce<Reducer, Op, A, B, N>::run(a, b); +} + +} // end namespace internal + +} // end namespace Eigen + + + +#endif // EIGEN_EMULATE_CXX11_META_H diff --git a/unsupported/Eigen/CXX11/src/util/MaxSizeVector.h b/unsupported/Eigen/CXX11/src/util/MaxSizeVector.h new file mode 100644 index 000000000..551124bae --- /dev/null +++ b/unsupported/Eigen/CXX11/src/util/MaxSizeVector.h @@ -0,0 +1,130 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@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_FIXEDSIZEVECTOR_H +#define EIGEN_FIXEDSIZEVECTOR_H + +namespace Eigen { + +/** \class MaxSizeVector + * \ingroup Core + * + * \brief The MaxSizeVector class. + * + * The %MaxSizeVector provides a subset of std::vector functionality. + * + * The goal is to provide basic std::vector operations when using + * std::vector is not an option (e.g. on GPU or when compiling using + * FMA/AVX, as this can cause either compilation failures or illegal + * instruction failures). + * + * Beware: The constructors are not API compatible with these of + * std::vector. + */ +template <typename T> +class MaxSizeVector { + public: + // Construct a new MaxSizeVector, reserve n elements. + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + explicit MaxSizeVector(size_t n) + : reserve_(n), size_(0), + data_(static_cast<T*>(internal::aligned_malloc(n * sizeof(T)))) { + for (size_t i = 0; i < n; ++i) { new (&data_[i]) T; } + } + + // Construct a new MaxSizeVector, reserve and resize to n. + // Copy the init value to all elements. + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + explicit MaxSizeVector(size_t n, const T& init) + : reserve_(n), size_(n), + data_(static_cast<T*>(internal::aligned_malloc(n * sizeof(T)))) { + for (size_t i = 0; i < n; ++i) { new (&data_[i]) T(init); } + } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + ~MaxSizeVector() { + for (size_t i = 0; i < size_; ++i) { + data_[i].~T(); + } + internal::aligned_free(data_); + } + + // Append new elements (up to reserved size). + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + void push_back(const T& t) { + eigen_assert(size_ < reserve_); + data_[size_++] = t; + } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + const T& operator[] (size_t i) const { + eigen_assert(i < size_); + return data_[i]; + } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + T& operator[] (size_t i) { + eigen_assert(i < size_); + return data_[i]; + } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + T& back() { + eigen_assert(size_ > 0); + return data_[size_ - 1]; + } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + const T& back() const { + eigen_assert(size_ > 0); + return data_[size_ - 1]; + } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + void pop_back() { + // NOTE: This does not destroy the value at the end the way + // std::vector's version of pop_back() does. That happens when + // the Vector is destroyed. + eigen_assert(size_ > 0); + size_--; + } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + size_t size() const { return size_; } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + bool empty() const { return size_ == 0; } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + T* data() { return data_; } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + const T* data() const { return data_; } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + T* begin() { return data_; } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + T* end() { return data_ + size_; } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + const T* begin() const { return data_; } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + const T* end() const { return data_ + size_; } + + private: + size_t reserve_; + size_t size_; + T* data_; +}; + +} // namespace Eigen + +#endif // EIGEN_FIXEDSIZEVECTOR_H |