10#ifndef EIGEN_CXX11META_H
11#define EIGEN_CXX11META_H
14#include "EmulateArray.h"
19#if __cplusplus > 199711L || EIGEN_COMP_MSVC >= 1900
21#include "CXX11Workarounds.h"
33template<
typename... tt>
34struct type_list {
constexpr static int count =
sizeof...(tt); };
36template<
typename t,
typename... tt>
37struct type_list<t, tt...> {
constexpr static int count =
sizeof...(tt) + 1;
typedef t first_type; };
39template<
typename T, T... nn>
40struct numeric_list {
constexpr static std::size_t count =
sizeof...(nn); };
42template<
typename T, T n, T... nn>
43struct numeric_list<T, n, nn...> {
constexpr static std::size_t count =
sizeof...(nn) + 1;
constexpr static T first_value = n; };
55template<
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...> {};
56template<
typename T, T start, T... ii>
struct gen_numeric_list<T, 0, start, ii...> {
typedef numeric_list<T, ii...> type; };
58template<
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> {};
59template<
typename T, T start, T... ii>
struct gen_numeric_list_reversed<T, 0, start, ii...> {
typedef numeric_list<T, ii...> type; };
61template<
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...> {};
62template<
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; };
64template<
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...> {};
65template<
typename T, T V, T... nn>
struct gen_numeric_list_repeated<T, 0, V, nn...> {
typedef numeric_list<T, nn...> type; };
69template<
class a,
class b>
struct concat;
71template<
typename... as,
typename... bs>
struct concat<type_list<as...>, type_list<bs...>> {
typedef type_list<as..., bs...> type; };
72template<
typename T, T... as, T... bs>
struct concat<numeric_list<T, as...>, numeric_list<T, bs...> > {
typedef numeric_list<T, as..., bs...> type; };
74template<
typename... p>
struct mconcat;
75template<
typename a>
struct mconcat<a> {
typedef a type; };
76template<
typename a,
typename b>
struct mconcat<a, b> : concat<a, b> {};
77template<
typename a,
typename b,
typename... cs>
struct mconcat<a, b, cs...> : concat<a, typename mconcat<b, cs...>::type> {};
81template<
int n,
typename x>
struct take;
82template<
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> {};
83template<
int n>
struct take<n, type_list<>> {
typedef type_list<> type; };
84template<
typename a,
typename... as>
struct take<0, type_list<a, as...>> {
typedef type_list<> type; };
85template<>
struct take<0, type_list<>> {
typedef type_list<> type; };
87template<
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> {};
88template<
typename T,
int n>
struct take<n, numeric_list<T>> {
typedef numeric_list<T> type; };
89template<
typename T, T a, T... as>
struct take<0, numeric_list<T, a, as...>> {
typedef numeric_list<T> type; };
90template<
typename T>
struct take<0, numeric_list<T>> {
typedef numeric_list<T> type; };
92template<
typename T,
int n, T... ii>
struct h_skip_helper_numeric;
93template<
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...> {};
94template<
typename T, T i, T... ii>
struct h_skip_helper_numeric<T, 0, i, ii...> {
typedef numeric_list<T, i, ii...> type; };
95template<
typename T,
int n>
struct h_skip_helper_numeric<T, n> {
typedef numeric_list<T> type; };
96template<
typename T>
struct h_skip_helper_numeric<T, 0> {
typedef numeric_list<T> type; };
98template<
int n,
typename... tt>
struct h_skip_helper_type;
99template<
int n,
typename t,
typename... tt>
struct h_skip_helper_type<n, t, tt...> : h_skip_helper_type<n-1, tt...> {};
100template<
typename t,
typename... tt>
struct h_skip_helper_type<0, t, tt...> {
typedef type_list<t, tt...> type; };
101template<
int n>
struct h_skip_helper_type<n> {
typedef type_list<> type; };
102template<>
struct h_skip_helper_type<0> {
typedef type_list<> type; };
106 template<
typename T, T... ii>
107 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(); }
108 template<
typename... tt>
109 constexpr static inline typename h_skip_helper_type<n, tt...>::type helper(type_list<tt...>) {
return typename h_skip_helper_type<n, tt...>::type(); }
112template<
int n,
typename a>
struct skip {
typedef decltype(h_skip<n>::helper(a())) type; };
114template<
int start,
int count,
typename a>
struct slice : take<count, typename skip<start, a>::type> {};
118template<
int n,
typename x>
struct get;
120template<
int n,
typename a,
typename... as>
struct get<n, type_list<a, as...>> : get<n-1, type_list<as...>> {};
121template<
typename a,
typename... as>
struct get<0, type_list<a, as...>> {
typedef a type; };
123template<
typename T,
int n, T a, T... as>
struct get<n, numeric_list<T, a, as...>> : get<n-1, numeric_list<T, as...>> {};
124template<
typename T, T a, T... as>
struct get<0, numeric_list<T, a, as...>> {
constexpr static T value = a; };
128template<
typename T, T dummy,
typename t>
struct id_numeric {
typedef t type; };
129template<
typename dummy,
typename t>
struct id_type {
typedef t type; };
133template<
typename a,
typename b>
struct is_same_gf : is_same<a, b> {
constexpr static int global_flags = 0; };
139 template<
typename,
typename>
class op,
140 typename additional_param,
143struct h_apply_op_helper {
typedef type_list<typename op<values, additional_param>::type...> type; };
145 template<
typename,
typename>
class op,
146 typename additional_param,
149struct h_apply_op_helper<true, op, additional_param, values...> {
typedef type_list<typename op<additional_param, values>::type...> type; };
153 template<
typename,
typename>
class op,
154 typename additional_param
158 template<
typename... values>
159 constexpr static typename h_apply_op_helper<from_left, op, additional_param, values...>::type helper(type_list<values...>)
160 {
return typename h_apply_op_helper<from_left, op, additional_param, values...>::type(); }
164 template<
typename,
typename>
class op,
165 typename additional_param,
168struct apply_op_from_left {
typedef decltype(h_apply_op<true, op, additional_param>::helper(a())) type; };
171 template<
typename,
typename>
class op,
172 typename additional_param,
175struct apply_op_from_right {
typedef decltype(h_apply_op<false, op, additional_param>::helper(a())) type; };
180 template<
typename,
typename>
class test,
181 typename check_against,
183 bool last_check_positive =
false
185struct contained_in_list;
188 template<
typename,
typename>
class test,
189 typename check_against,
192struct contained_in_list<test, check_against, h_list, true>
194 constexpr static bool value =
true;
198 template<
typename,
typename>
class test,
199 typename check_against,
203struct 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> {};
206 template<
typename,
typename>
class test,
207 typename check_against
208 EIGEN_TPL_PP_SPEC_HACK_DEFC(
typename, empty)
210struct contained_in_list<test, check_against, type_list<EIGEN_TPL_PP_SPEC_HACK_USE(empty)>, false> {
constexpr static bool value =
false; };
215 template<
typename,
typename>
class test,
216 typename check_against,
218 int default_flags = 0,
219 bool last_check_positive =
false,
220 int last_check_flags = default_flags
222struct contained_in_list_gf;
225 template<
typename,
typename>
class test,
226 typename check_against,
231struct contained_in_list_gf<test, check_against, h_list, default_flags, true, last_check_flags>
233 constexpr static bool value =
true;
234 constexpr static int global_flags = last_check_flags;
238 template<
typename,
typename>
class test,
239 typename check_against,
245struct 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> {};
248 template<
typename,
typename>
class test,
249 typename check_against
250 EIGEN_TPL_PP_SPEC_HACK_DEFC(
typename, empty),
254struct 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; };
265>
struct reduce<Reducer>
267 constexpr static inline int run() {
return Reducer::Identity; }
273>
struct reduce<Reducer, A>
275 constexpr static inline A run(A a) {
return a; }
282>
struct reduce<Reducer, A, Ts...>
284 constexpr static inline auto run(A a, Ts... ts) ->
decltype(Reducer::run(a, reduce<Reducer, Ts...>::run(ts...))) {
285 return Reducer::run(a, reduce<Reducer, Ts...>::run(ts...));
292 template<
typename A,
typename B> EIGEN_DEVICE_FUNC
constexpr static inline auto run(A a, B b) ->
decltype(a + b) {
return a + b; }
293 static constexpr int Identity = 0;
296 template<
typename A,
typename B> EIGEN_DEVICE_FUNC
constexpr static inline auto run(A a, B b) ->
decltype(a * b) {
return a * b; }
297 static constexpr int Identity = 1;
300struct logical_and_op {
template<
typename A,
typename B>
constexpr static inline auto run(A a, B b) ->
decltype(a && b) {
return a && b; } };
301struct logical_or_op {
template<
typename A,
typename B>
constexpr static inline auto run(A a, B b) ->
decltype(a || b) {
return a || b; } };
303struct equal_op {
template<
typename A,
typename B>
constexpr static inline auto run(A a, B b) ->
decltype(a == b) {
return a == b; } };
304struct not_equal_op {
template<
typename A,
typename B>
constexpr static inline auto run(A a, B b) ->
decltype(a != b) {
return a != b; } };
305struct lesser_op {
template<
typename A,
typename B>
constexpr static inline auto run(A a, B b) ->
decltype(a < b) {
return a < b; } };
306struct lesser_equal_op {
template<
typename A,
typename B>
constexpr static inline auto run(A a, B b) ->
decltype(a <= b) {
return a <= b; } };
307struct greater_op {
template<
typename A,
typename B>
constexpr static inline auto run(A a, B b) ->
decltype(a > b) {
return a > b; } };
308struct greater_equal_op {
template<
typename A,
typename B>
constexpr static inline auto run(A a, B b) ->
decltype(a >= b) {
return a >= b; } };
312struct not_op {
template<
typename A>
constexpr static inline auto run(A a) ->
decltype(!a) {
return !a; } };
313struct negation_op {
template<
typename A>
constexpr static inline auto run(A a) ->
decltype(-a) {
return -a; } };
314struct greater_equal_zero_op {
template<
typename A>
constexpr static inline auto run(A a) ->
decltype(a >= 0) {
return a >= 0; } };
322template<
typename... Ts>
323constexpr inline decltype(reduce<product_op, Ts...>::run((*((Ts*)0))...)) arg_prod(Ts... ts)
325 return reduce<product_op, Ts...>::run(ts...);
328template<
typename... Ts>
329constexpr inline decltype(reduce<sum_op, Ts...>::run((*((Ts*)0))...)) arg_sum(Ts... ts)
331 return reduce<sum_op, Ts...>::run(ts...);
336template<
typename Array,
int... n>
337constexpr inline Array h_array_reverse(Array arr, numeric_list<int, n...>)
339 return {{array_get<
sizeof...(n) - n - 1>(arr)...}};
342template<
typename T, std::
size_t N>
343constexpr inline array<T, N> array_reverse(array<T, N> arr)
345 return h_array_reverse(arr,
typename gen_numeric_list<int, N>::type());
356template<
typename Reducer,
typename T, std::size_t N, std::size_t n = N - 1>
357struct h_array_reduce {
358 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)))
360 return Reducer::run(h_array_reduce<Reducer, T, N, n - 1>::run(arr, identity), array_get<n>(arr));
364template<
typename Reducer,
typename T, std::
size_t N>
365struct h_array_reduce<Reducer, T, N, 0>
367 EIGEN_DEVICE_FUNC
constexpr static inline T run(
const array<T, N>& arr, T)
369 return array_get<0>(arr);
373template<
typename Reducer,
typename T>
374struct h_array_reduce<Reducer, T, 0>
376 EIGEN_DEVICE_FUNC
constexpr static inline T run(
const array<T, 0>&, T identity)
382template<
typename Reducer,
typename T, std::
size_t N>
383EIGEN_DEVICE_FUNC
constexpr inline auto array_reduce(
const array<T, N>& arr, T identity) ->
decltype(h_array_reduce<Reducer, T, N>::run(arr, identity))
385 return h_array_reduce<Reducer, T, N>::run(arr, identity);
390template<
typename T, std::
size_t N>
391EIGEN_DEVICE_FUNC
constexpr inline auto array_sum(
const array<T, N>& arr) ->
decltype(array_reduce<sum_op, T, N>(arr,
static_cast<T
>(0)))
393 return array_reduce<sum_op, T, N>(arr,
static_cast<T
>(0));
396template<
typename T, std::
size_t N>
397EIGEN_DEVICE_FUNC
constexpr inline auto array_prod(
const array<T, N>& arr) ->
decltype(array_reduce<product_op, T, N>(arr,
static_cast<T
>(1)))
399 return array_reduce<product_op, T, N>(arr,
static_cast<T
>(1));
403EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE t array_prod(
const std::vector<t>& a) {
404 eigen_assert(a.size() > 0);
406 for (
size_t i = 0; i < a.size(); ++i) { prod *= a[i]; }
412template<
typename Op,
typename A,
typename B, std::size_t N,
int... n>
413constexpr inline array<
decltype(Op::run(A(), B())),N> h_array_zip(array<A, N> a, array<B, N> b, numeric_list<int, n...>)
415 return array<
decltype(Op::run(A(), B())),N>{{ Op::run(array_get<n>(a), array_get<n>(b))... }};
418template<
typename Op,
typename A,
typename B, std::
size_t N>
419constexpr inline array<
decltype(Op::run(A(), B())),N> array_zip(array<A, N> a, array<B, N> b)
421 return h_array_zip<Op>(a, b,
typename gen_numeric_list<int, N>::type());
426template<
typename Reducer,
typename Op,
typename A,
typename B, std::size_t N,
int... n>
427constexpr 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))...))
429 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))...);
432template<
typename Reducer,
typename Op,
typename A,
typename B, std::
size_t N>
433constexpr 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()))
435 return h_array_zip_and_reduce<Reducer, Op, A, B, N>(a, b,
typename gen_numeric_list<int, N>::type());
440template<
typename Op,
typename A, std::size_t N,
int... n>
441constexpr inline array<
decltype(Op::run(A())),N> h_array_apply(array<A, N> a, numeric_list<int, n...>)
443 return array<
decltype(Op::run(A())),N>{{ Op::run(array_get<n>(a))... }};
446template<
typename Op,
typename A, std::
size_t N>
447constexpr inline array<
decltype(Op::run(A())),N> array_apply(array<A, N> a)
449 return h_array_apply<Op>(a,
typename gen_numeric_list<int, N>::type());
454template<
typename Reducer,
typename Op,
typename A, std::size_t N,
int... n>
455constexpr 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))...))
457 return reduce<Reducer,
typename id_numeric<int,n,
decltype(Op::run(A()))>::type...>::run(Op::run(array_get<n>(arr))...);
460template<
typename Reducer,
typename Op,
typename A, std::
size_t N>
461constexpr 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()))
463 return h_array_apply_and_reduce<Reducer, Op, A, N>(a,
typename gen_numeric_list<int, N>::type());
474 template<
typename t,
int... ii>
475 constexpr static inline array<t, n> run(t v, numeric_list<int, ii...>)
477 return {{
typename id_numeric<int, ii, t>::type(v)... }};
481template<
int n,
typename t>
482constexpr array<t, n> repeat(t v) {
return h_repeat<n>::run(v,
typename gen_numeric_list<int, n>::type()); }
485template<
class InstType,
typename ArrType, std::size_t N,
bool Reverse,
typename... Ps>
486struct h_instantiate_by_c_array;
488template<
class InstType,
typename ArrType, std::size_t N,
typename... Ps>
489struct h_instantiate_by_c_array<InstType, ArrType, N, false, Ps...>
491 static InstType run(ArrType* arr, Ps... args)
493 return h_instantiate_by_c_array<InstType, ArrType, N - 1, false, Ps..., ArrType>::run(arr + 1, args..., arr[0]);
497template<
class InstType,
typename ArrType, std::size_t N,
typename... Ps>
498struct h_instantiate_by_c_array<InstType, ArrType, N, true, Ps...>
500 static InstType run(ArrType* arr, Ps... args)
502 return h_instantiate_by_c_array<InstType, ArrType, N - 1, false, ArrType, Ps...>::run(arr + 1, arr[0], args...);
506template<
class InstType,
typename ArrType,
typename... Ps>
507struct h_instantiate_by_c_array<InstType, ArrType, 0, false, Ps...>
509 static InstType run(ArrType* arr, Ps... args)
512 return InstType(args...);
516template<
class InstType,
typename ArrType,
typename... Ps>
517struct h_instantiate_by_c_array<InstType, ArrType, 0, true, Ps...>
519 static InstType run(ArrType* arr, Ps... args)
522 return InstType(args...);
526template<
class InstType,
typename ArrType, std::
size_t N,
bool Reverse = false>
527InstType instantiate_by_c_array(ArrType* arr)
529 return h_instantiate_by_c_array<InstType, ArrType, N, Reverse>::run(arr);
538#include "EmulateCXX11Meta.h"
Namespace containing all symbols from the Eigen library.
Definition: AdolcForward:45