functional revision 288943
1// -*- C++ -*- 2//===------------------------ functional ----------------------------------===// 3// 4// The LLVM Compiler Infrastructure 5// 6// This file is dual licensed under the MIT and the University of Illinois Open 7// Source Licenses. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10 11#ifndef _LIBCPP_FUNCTIONAL 12#define _LIBCPP_FUNCTIONAL 13 14/* 15 functional synopsis 16 17namespace std 18{ 19 20template <class Arg, class Result> 21struct unary_function 22{ 23 typedef Arg argument_type; 24 typedef Result result_type; 25}; 26 27template <class Arg1, class Arg2, class Result> 28struct binary_function 29{ 30 typedef Arg1 first_argument_type; 31 typedef Arg2 second_argument_type; 32 typedef Result result_type; 33}; 34 35template <class T> 36class reference_wrapper 37 : public unary_function<T1, R> // if wrapping a unary functor 38 : public binary_function<T1, T2, R> // if wraping a binary functor 39{ 40public: 41 // types 42 typedef T type; 43 typedef see below result_type; // Not always defined 44 45 // construct/copy/destroy 46 reference_wrapper(T&) noexcept; 47 reference_wrapper(T&&) = delete; // do not bind to temps 48 reference_wrapper(const reference_wrapper<T>& x) noexcept; 49 50 // assignment 51 reference_wrapper& operator=(const reference_wrapper<T>& x) noexcept; 52 53 // access 54 operator T& () const noexcept; 55 T& get() const noexcept; 56 57 // invoke 58 template <class... ArgTypes> 59 typename result_of<T&(ArgTypes&&...)>::type 60 operator() (ArgTypes&&...) const; 61}; 62 63template <class T> reference_wrapper<T> ref(T& t) noexcept; 64template <class T> void ref(const T&& t) = delete; 65template <class T> reference_wrapper<T> ref(reference_wrapper<T>t) noexcept; 66 67template <class T> reference_wrapper<const T> cref(const T& t) noexcept; 68template <class T> void cref(const T&& t) = delete; 69template <class T> reference_wrapper<const T> cref(reference_wrapper<T> t) noexcept; 70 71template <class T> // <class T=void> in C++14 72struct plus : binary_function<T, T, T> 73{ 74 T operator()(const T& x, const T& y) const; 75}; 76 77template <class T> // <class T=void> in C++14 78struct minus : binary_function<T, T, T> 79{ 80 T operator()(const T& x, const T& y) const; 81}; 82 83template <class T> // <class T=void> in C++14 84struct multiplies : binary_function<T, T, T> 85{ 86 T operator()(const T& x, const T& y) const; 87}; 88 89template <class T> // <class T=void> in C++14 90struct divides : binary_function<T, T, T> 91{ 92 T operator()(const T& x, const T& y) const; 93}; 94 95template <class T> // <class T=void> in C++14 96struct modulus : binary_function<T, T, T> 97{ 98 T operator()(const T& x, const T& y) const; 99}; 100 101template <class T> // <class T=void> in C++14 102struct negate : unary_function<T, T> 103{ 104 T operator()(const T& x) const; 105}; 106 107template <class T> // <class T=void> in C++14 108struct equal_to : binary_function<T, T, bool> 109{ 110 bool operator()(const T& x, const T& y) const; 111}; 112 113template <class T> // <class T=void> in C++14 114struct not_equal_to : binary_function<T, T, bool> 115{ 116 bool operator()(const T& x, const T& y) const; 117}; 118 119template <class T> // <class T=void> in C++14 120struct greater : binary_function<T, T, bool> 121{ 122 bool operator()(const T& x, const T& y) const; 123}; 124 125template <class T> // <class T=void> in C++14 126struct less : binary_function<T, T, bool> 127{ 128 bool operator()(const T& x, const T& y) const; 129}; 130 131template <class T> // <class T=void> in C++14 132struct greater_equal : binary_function<T, T, bool> 133{ 134 bool operator()(const T& x, const T& y) const; 135}; 136 137template <class T> // <class T=void> in C++14 138struct less_equal : binary_function<T, T, bool> 139{ 140 bool operator()(const T& x, const T& y) const; 141}; 142 143template <class T> // <class T=void> in C++14 144struct logical_and : binary_function<T, T, bool> 145{ 146 bool operator()(const T& x, const T& y) const; 147}; 148 149template <class T> // <class T=void> in C++14 150struct logical_or : binary_function<T, T, bool> 151{ 152 bool operator()(const T& x, const T& y) const; 153}; 154 155template <class T> // <class T=void> in C++14 156struct logical_not : unary_function<T, bool> 157{ 158 bool operator()(const T& x) const; 159}; 160 161template <class T> // <class T=void> in C++14 162struct bit_and : unary_function<T, bool> 163{ 164 bool operator()(const T& x, const T& y) const; 165}; 166 167template <class T> // <class T=void> in C++14 168struct bit_or : unary_function<T, bool> 169{ 170 bool operator()(const T& x, const T& y) const; 171}; 172 173template <class T> // <class T=void> in C++14 174struct bit_xor : unary_function<T, bool> 175{ 176 bool operator()(const T& x, const T& y) const; 177}; 178 179template <class T=void> // C++14 180struct bit_xor : unary_function<T, bool> 181{ 182 bool operator()(const T& x) const; 183}; 184 185template <class Predicate> 186class unary_negate 187 : public unary_function<typename Predicate::argument_type, bool> 188{ 189public: 190 explicit unary_negate(const Predicate& pred); 191 bool operator()(const typename Predicate::argument_type& x) const; 192}; 193 194template <class Predicate> unary_negate<Predicate> not1(const Predicate& pred); 195 196template <class Predicate> 197class binary_negate 198 : public binary_function<typename Predicate::first_argument_type, 199 typename Predicate::second_argument_type, 200 bool> 201{ 202public: 203 explicit binary_negate(const Predicate& pred); 204 bool operator()(const typename Predicate::first_argument_type& x, 205 const typename Predicate::second_argument_type& y) const; 206}; 207 208template <class Predicate> binary_negate<Predicate> not2(const Predicate& pred); 209 210template<class T> struct is_bind_expression; 211template<class T> struct is_placeholder; 212 213template<class Fn, class... BoundArgs> 214 unspecified bind(Fn&&, BoundArgs&&...); 215template<class R, class Fn, class... BoundArgs> 216 unspecified bind(Fn&&, BoundArgs&&...); 217 218namespace placeholders { 219 // M is the implementation-defined number of placeholders 220 extern unspecified _1; 221 extern unspecified _2; 222 . 223 . 224 . 225 extern unspecified _Mp; 226} 227 228template <class Operation> 229class binder1st 230 : public unary_function<typename Operation::second_argument_type, 231 typename Operation::result_type> 232{ 233protected: 234 Operation op; 235 typename Operation::first_argument_type value; 236public: 237 binder1st(const Operation& x, const typename Operation::first_argument_type y); 238 typename Operation::result_type operator()( typename Operation::second_argument_type& x) const; 239 typename Operation::result_type operator()(const typename Operation::second_argument_type& x) const; 240}; 241 242template <class Operation, class T> 243binder1st<Operation> bind1st(const Operation& op, const T& x); 244 245template <class Operation> 246class binder2nd 247 : public unary_function<typename Operation::first_argument_type, 248 typename Operation::result_type> 249{ 250protected: 251 Operation op; 252 typename Operation::second_argument_type value; 253public: 254 binder2nd(const Operation& x, const typename Operation::second_argument_type y); 255 typename Operation::result_type operator()( typename Operation::first_argument_type& x) const; 256 typename Operation::result_type operator()(const typename Operation::first_argument_type& x) const; 257}; 258 259template <class Operation, class T> 260binder2nd<Operation> bind2nd(const Operation& op, const T& x); 261 262template <class Arg, class Result> 263class pointer_to_unary_function : public unary_function<Arg, Result> 264{ 265public: 266 explicit pointer_to_unary_function(Result (*f)(Arg)); 267 Result operator()(Arg x) const; 268}; 269 270template <class Arg, class Result> 271pointer_to_unary_function<Arg,Result> ptr_fun(Result (*f)(Arg)); 272 273template <class Arg1, class Arg2, class Result> 274class pointer_to_binary_function : public binary_function<Arg1, Arg2, Result> 275{ 276public: 277 explicit pointer_to_binary_function(Result (*f)(Arg1, Arg2)); 278 Result operator()(Arg1 x, Arg2 y) const; 279}; 280 281template <class Arg1, class Arg2, class Result> 282pointer_to_binary_function<Arg1,Arg2,Result> ptr_fun(Result (*f)(Arg1,Arg2)); 283 284template<class S, class T> 285class mem_fun_t : public unary_function<T*, S> 286{ 287public: 288 explicit mem_fun_t(S (T::*p)()); 289 S operator()(T* p) const; 290}; 291 292template<class S, class T, class A> 293class mem_fun1_t : public binary_function<T*, A, S> 294{ 295public: 296 explicit mem_fun1_t(S (T::*p)(A)); 297 S operator()(T* p, A x) const; 298}; 299 300template<class S, class T> mem_fun_t<S,T> mem_fun(S (T::*f)()); 301template<class S, class T, class A> mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A)); 302 303template<class S, class T> 304class mem_fun_ref_t : public unary_function<T, S> 305{ 306public: 307 explicit mem_fun_ref_t(S (T::*p)()); 308 S operator()(T& p) const; 309}; 310 311template<class S, class T, class A> 312class mem_fun1_ref_t : public binary_function<T, A, S> 313{ 314public: 315 explicit mem_fun1_ref_t(S (T::*p)(A)); 316 S operator()(T& p, A x) const; 317}; 318 319template<class S, class T> mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)()); 320template<class S, class T, class A> mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A)); 321 322template <class S, class T> 323class const_mem_fun_t : public unary_function<const T*, S> 324{ 325public: 326 explicit const_mem_fun_t(S (T::*p)() const); 327 S operator()(const T* p) const; 328}; 329 330template <class S, class T, class A> 331class const_mem_fun1_t : public binary_function<const T*, A, S> 332{ 333public: 334 explicit const_mem_fun1_t(S (T::*p)(A) const); 335 S operator()(const T* p, A x) const; 336}; 337 338template <class S, class T> const_mem_fun_t<S,T> mem_fun(S (T::*f)() const); 339template <class S, class T, class A> const_mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A) const); 340 341template <class S, class T> 342class const_mem_fun_ref_t : public unary_function<T, S> 343{ 344public: 345 explicit const_mem_fun_ref_t(S (T::*p)() const); 346 S operator()(const T& p) const; 347}; 348 349template <class S, class T, class A> 350class const_mem_fun1_ref_t : public binary_function<T, A, S> 351{ 352public: 353 explicit const_mem_fun1_ref_t(S (T::*p)(A) const); 354 S operator()(const T& p, A x) const; 355}; 356 357template <class S, class T> const_mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)() const); 358template <class S, class T, class A> const_mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A) const); 359 360template<class R, class T> unspecified mem_fn(R T::*); 361 362class bad_function_call 363 : public exception 364{ 365}; 366 367template<class> class function; // undefined 368 369template<class R, class... ArgTypes> 370class function<R(ArgTypes...)> 371 : public unary_function<T1, R> // iff sizeof...(ArgTypes) == 1 and 372 // ArgTypes contains T1 373 : public binary_function<T1, T2, R> // iff sizeof...(ArgTypes) == 2 and 374 // ArgTypes contains T1 and T2 375{ 376public: 377 typedef R result_type; 378 379 // construct/copy/destroy: 380 function() noexcept; 381 function(nullptr_t) noexcept; 382 function(const function&); 383 function(function&&) noexcept; 384 template<class F> 385 function(F); 386 template<Allocator Alloc> 387 function(allocator_arg_t, const Alloc&) noexcept; 388 template<Allocator Alloc> 389 function(allocator_arg_t, const Alloc&, nullptr_t) noexcept; 390 template<Allocator Alloc> 391 function(allocator_arg_t, const Alloc&, const function&); 392 template<Allocator Alloc> 393 function(allocator_arg_t, const Alloc&, function&&); 394 template<class F, Allocator Alloc> 395 function(allocator_arg_t, const Alloc&, F); 396 397 function& operator=(const function&); 398 function& operator=(function&&) noexcept; 399 function& operator=(nullptr_t) noexcept; 400 template<class F> 401 function& operator=(F&&); 402 template<class F> 403 function& operator=(reference_wrapper<F>) noexcept; 404 405 ~function(); 406 407 // function modifiers: 408 void swap(function&) noexcept; 409 template<class F, class Alloc> 410 void assign(F&&, const Alloc&); 411 412 // function capacity: 413 explicit operator bool() const noexcept; 414 415 // function invocation: 416 R operator()(ArgTypes...) const; 417 418 // function target access: 419 const std::type_info& target_type() const noexcept; 420 template <typename T> T* target() noexcept; 421 template <typename T> const T* target() const noexcept; 422}; 423 424// Null pointer comparisons: 425template <class R, class ... ArgTypes> 426 bool operator==(const function<R(ArgTypes...)>&, nullptr_t) noexcept; 427 428template <class R, class ... ArgTypes> 429 bool operator==(nullptr_t, const function<R(ArgTypes...)>&) noexcept; 430 431template <class R, class ... ArgTypes> 432 bool operator!=(const function<R(ArgTypes...)>&, nullptr_t) noexcept; 433 434template <class R, class ... ArgTypes> 435 bool operator!=(nullptr_t, const function<R(ArgTypes...)>&) noexcept; 436 437// specialized algorithms: 438template <class R, class ... ArgTypes> 439 void swap(function<R(ArgTypes...)>&, function<R(ArgTypes...)>&) noexcept; 440 441template <class T> struct hash; 442 443template <> struct hash<bool>; 444template <> struct hash<char>; 445template <> struct hash<signed char>; 446template <> struct hash<unsigned char>; 447template <> struct hash<char16_t>; 448template <> struct hash<char32_t>; 449template <> struct hash<wchar_t>; 450template <> struct hash<short>; 451template <> struct hash<unsigned short>; 452template <> struct hash<int>; 453template <> struct hash<unsigned int>; 454template <> struct hash<long>; 455template <> struct hash<long long>; 456template <> struct hash<unsigned long>; 457template <> struct hash<unsigned long long>; 458 459template <> struct hash<float>; 460template <> struct hash<double>; 461template <> struct hash<long double>; 462 463template<class T> struct hash<T*>; 464 465} // std 466 467POLICY: For non-variadic implementations, the number of arguments is limited 468 to 3. It is hoped that the need for non-variadic implementations 469 will be minimal. 470 471*/ 472 473#include <__config> 474#include <type_traits> 475#include <typeinfo> 476#include <exception> 477#include <memory> 478#include <tuple> 479 480#include <__functional_base> 481 482#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 483#pragma GCC system_header 484#endif 485 486_LIBCPP_BEGIN_NAMESPACE_STD 487 488#if _LIBCPP_STD_VER > 11 489template <class _Tp = void> 490#else 491template <class _Tp> 492#endif 493struct _LIBCPP_TYPE_VIS_ONLY plus : binary_function<_Tp, _Tp, _Tp> 494{ 495 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 496 _Tp operator()(const _Tp& __x, const _Tp& __y) const 497 {return __x + __y;} 498}; 499 500#if _LIBCPP_STD_VER > 11 501template <> 502struct _LIBCPP_TYPE_VIS_ONLY plus<void> 503{ 504 template <class _T1, class _T2> 505 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 506 auto operator()(_T1&& __t, _T2&& __u) const 507 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u))) 508 -> decltype (_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u)) 509 { return _VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u); } 510 typedef void is_transparent; 511}; 512#endif 513 514 515#if _LIBCPP_STD_VER > 11 516template <class _Tp = void> 517#else 518template <class _Tp> 519#endif 520struct _LIBCPP_TYPE_VIS_ONLY minus : binary_function<_Tp, _Tp, _Tp> 521{ 522 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 523 _Tp operator()(const _Tp& __x, const _Tp& __y) const 524 {return __x - __y;} 525}; 526 527#if _LIBCPP_STD_VER > 11 528template <> 529struct _LIBCPP_TYPE_VIS_ONLY minus<void> 530{ 531 template <class _T1, class _T2> 532 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 533 auto operator()(_T1&& __t, _T2&& __u) const 534 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u))) 535 -> decltype (_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u)) 536 { return _VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u); } 537 typedef void is_transparent; 538}; 539#endif 540 541 542#if _LIBCPP_STD_VER > 11 543template <class _Tp = void> 544#else 545template <class _Tp> 546#endif 547struct _LIBCPP_TYPE_VIS_ONLY multiplies : binary_function<_Tp, _Tp, _Tp> 548{ 549 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 550 _Tp operator()(const _Tp& __x, const _Tp& __y) const 551 {return __x * __y;} 552}; 553 554#if _LIBCPP_STD_VER > 11 555template <> 556struct _LIBCPP_TYPE_VIS_ONLY multiplies<void> 557{ 558 template <class _T1, class _T2> 559 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 560 auto operator()(_T1&& __t, _T2&& __u) const 561 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u))) 562 -> decltype (_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u)) 563 { return _VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u); } 564 typedef void is_transparent; 565}; 566#endif 567 568 569#if _LIBCPP_STD_VER > 11 570template <class _Tp = void> 571#else 572template <class _Tp> 573#endif 574struct _LIBCPP_TYPE_VIS_ONLY divides : binary_function<_Tp, _Tp, _Tp> 575{ 576 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 577 _Tp operator()(const _Tp& __x, const _Tp& __y) const 578 {return __x / __y;} 579}; 580 581#if _LIBCPP_STD_VER > 11 582template <> 583struct _LIBCPP_TYPE_VIS_ONLY divides<void> 584{ 585 template <class _T1, class _T2> 586 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 587 auto operator()(_T1&& __t, _T2&& __u) const 588 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u))) 589 -> decltype (_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u)) 590 { return _VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u); } 591 typedef void is_transparent; 592}; 593#endif 594 595 596#if _LIBCPP_STD_VER > 11 597template <class _Tp = void> 598#else 599template <class _Tp> 600#endif 601struct _LIBCPP_TYPE_VIS_ONLY modulus : binary_function<_Tp, _Tp, _Tp> 602{ 603 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 604 _Tp operator()(const _Tp& __x, const _Tp& __y) const 605 {return __x % __y;} 606}; 607 608#if _LIBCPP_STD_VER > 11 609template <> 610struct _LIBCPP_TYPE_VIS_ONLY modulus<void> 611{ 612 template <class _T1, class _T2> 613 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 614 auto operator()(_T1&& __t, _T2&& __u) const 615 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u))) 616 -> decltype (_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u)) 617 { return _VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u); } 618 typedef void is_transparent; 619}; 620#endif 621 622 623#if _LIBCPP_STD_VER > 11 624template <class _Tp = void> 625#else 626template <class _Tp> 627#endif 628struct _LIBCPP_TYPE_VIS_ONLY negate : unary_function<_Tp, _Tp> 629{ 630 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 631 _Tp operator()(const _Tp& __x) const 632 {return -__x;} 633}; 634 635#if _LIBCPP_STD_VER > 11 636template <> 637struct _LIBCPP_TYPE_VIS_ONLY negate<void> 638{ 639 template <class _Tp> 640 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 641 auto operator()(_Tp&& __x) const 642 _NOEXCEPT_(noexcept(- _VSTD::forward<_Tp>(__x))) 643 -> decltype (- _VSTD::forward<_Tp>(__x)) 644 { return - _VSTD::forward<_Tp>(__x); } 645 typedef void is_transparent; 646}; 647#endif 648 649 650#if _LIBCPP_STD_VER > 11 651template <class _Tp = void> 652#else 653template <class _Tp> 654#endif 655struct _LIBCPP_TYPE_VIS_ONLY equal_to : binary_function<_Tp, _Tp, bool> 656{ 657 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 658 bool operator()(const _Tp& __x, const _Tp& __y) const 659 {return __x == __y;} 660}; 661 662#if _LIBCPP_STD_VER > 11 663template <> 664struct _LIBCPP_TYPE_VIS_ONLY equal_to<void> 665{ 666 template <class _T1, class _T2> 667 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 668 auto operator()(_T1&& __t, _T2&& __u) const 669 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u))) 670 -> decltype (_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u)) 671 { return _VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u); } 672 typedef void is_transparent; 673}; 674#endif 675 676 677#if _LIBCPP_STD_VER > 11 678template <class _Tp = void> 679#else 680template <class _Tp> 681#endif 682struct _LIBCPP_TYPE_VIS_ONLY not_equal_to : binary_function<_Tp, _Tp, bool> 683{ 684 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 685 bool operator()(const _Tp& __x, const _Tp& __y) const 686 {return __x != __y;} 687}; 688 689#if _LIBCPP_STD_VER > 11 690template <> 691struct _LIBCPP_TYPE_VIS_ONLY not_equal_to<void> 692{ 693 template <class _T1, class _T2> 694 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 695 auto operator()(_T1&& __t, _T2&& __u) const 696 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u))) 697 -> decltype (_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u)) 698 { return _VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u); } 699 typedef void is_transparent; 700}; 701#endif 702 703 704#if _LIBCPP_STD_VER > 11 705template <class _Tp = void> 706#else 707template <class _Tp> 708#endif 709struct _LIBCPP_TYPE_VIS_ONLY greater : binary_function<_Tp, _Tp, bool> 710{ 711 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 712 bool operator()(const _Tp& __x, const _Tp& __y) const 713 {return __x > __y;} 714}; 715 716#if _LIBCPP_STD_VER > 11 717template <> 718struct _LIBCPP_TYPE_VIS_ONLY greater<void> 719{ 720 template <class _T1, class _T2> 721 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 722 auto operator()(_T1&& __t, _T2&& __u) const 723 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u))) 724 -> decltype (_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u)) 725 { return _VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u); } 726 typedef void is_transparent; 727}; 728#endif 729 730 731// less in <__functional_base> 732 733#if _LIBCPP_STD_VER > 11 734template <class _Tp = void> 735#else 736template <class _Tp> 737#endif 738struct _LIBCPP_TYPE_VIS_ONLY greater_equal : binary_function<_Tp, _Tp, bool> 739{ 740 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 741 bool operator()(const _Tp& __x, const _Tp& __y) const 742 {return __x >= __y;} 743}; 744 745#if _LIBCPP_STD_VER > 11 746template <> 747struct _LIBCPP_TYPE_VIS_ONLY greater_equal<void> 748{ 749 template <class _T1, class _T2> 750 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 751 auto operator()(_T1&& __t, _T2&& __u) const 752 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u))) 753 -> decltype (_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u)) 754 { return _VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u); } 755 typedef void is_transparent; 756}; 757#endif 758 759 760#if _LIBCPP_STD_VER > 11 761template <class _Tp = void> 762#else 763template <class _Tp> 764#endif 765struct _LIBCPP_TYPE_VIS_ONLY less_equal : binary_function<_Tp, _Tp, bool> 766{ 767 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 768 bool operator()(const _Tp& __x, const _Tp& __y) const 769 {return __x <= __y;} 770}; 771 772#if _LIBCPP_STD_VER > 11 773template <> 774struct _LIBCPP_TYPE_VIS_ONLY less_equal<void> 775{ 776 template <class _T1, class _T2> 777 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 778 auto operator()(_T1&& __t, _T2&& __u) const 779 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u))) 780 -> decltype (_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u)) 781 { return _VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u); } 782 typedef void is_transparent; 783}; 784#endif 785 786 787#if _LIBCPP_STD_VER > 11 788template <class _Tp = void> 789#else 790template <class _Tp> 791#endif 792struct _LIBCPP_TYPE_VIS_ONLY logical_and : binary_function<_Tp, _Tp, bool> 793{ 794 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 795 bool operator()(const _Tp& __x, const _Tp& __y) const 796 {return __x && __y;} 797}; 798 799#if _LIBCPP_STD_VER > 11 800template <> 801struct _LIBCPP_TYPE_VIS_ONLY logical_and<void> 802{ 803 template <class _T1, class _T2> 804 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 805 auto operator()(_T1&& __t, _T2&& __u) const 806 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u))) 807 -> decltype (_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u)) 808 { return _VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u); } 809 typedef void is_transparent; 810}; 811#endif 812 813 814#if _LIBCPP_STD_VER > 11 815template <class _Tp = void> 816#else 817template <class _Tp> 818#endif 819struct _LIBCPP_TYPE_VIS_ONLY logical_or : binary_function<_Tp, _Tp, bool> 820{ 821 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 822 bool operator()(const _Tp& __x, const _Tp& __y) const 823 {return __x || __y;} 824}; 825 826#if _LIBCPP_STD_VER > 11 827template <> 828struct _LIBCPP_TYPE_VIS_ONLY logical_or<void> 829{ 830 template <class _T1, class _T2> 831 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 832 auto operator()(_T1&& __t, _T2&& __u) const 833 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u))) 834 -> decltype (_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u)) 835 { return _VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u); } 836 typedef void is_transparent; 837}; 838#endif 839 840 841#if _LIBCPP_STD_VER > 11 842template <class _Tp = void> 843#else 844template <class _Tp> 845#endif 846struct _LIBCPP_TYPE_VIS_ONLY logical_not : unary_function<_Tp, bool> 847{ 848 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 849 bool operator()(const _Tp& __x) const 850 {return !__x;} 851}; 852 853#if _LIBCPP_STD_VER > 11 854template <> 855struct _LIBCPP_TYPE_VIS_ONLY logical_not<void> 856{ 857 template <class _Tp> 858 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 859 auto operator()(_Tp&& __x) const 860 _NOEXCEPT_(noexcept(!_VSTD::forward<_Tp>(__x))) 861 -> decltype (!_VSTD::forward<_Tp>(__x)) 862 { return !_VSTD::forward<_Tp>(__x); } 863 typedef void is_transparent; 864}; 865#endif 866 867 868#if _LIBCPP_STD_VER > 11 869template <class _Tp = void> 870#else 871template <class _Tp> 872#endif 873struct _LIBCPP_TYPE_VIS_ONLY bit_and : binary_function<_Tp, _Tp, _Tp> 874{ 875 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 876 _Tp operator()(const _Tp& __x, const _Tp& __y) const 877 {return __x & __y;} 878}; 879 880#if _LIBCPP_STD_VER > 11 881template <> 882struct _LIBCPP_TYPE_VIS_ONLY bit_and<void> 883{ 884 template <class _T1, class _T2> 885 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 886 auto operator()(_T1&& __t, _T2&& __u) const 887 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u))) 888 -> decltype (_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u)) 889 { return _VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u); } 890 typedef void is_transparent; 891}; 892#endif 893 894 895#if _LIBCPP_STD_VER > 11 896template <class _Tp = void> 897#else 898template <class _Tp> 899#endif 900struct _LIBCPP_TYPE_VIS_ONLY bit_or : binary_function<_Tp, _Tp, _Tp> 901{ 902 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 903 _Tp operator()(const _Tp& __x, const _Tp& __y) const 904 {return __x | __y;} 905}; 906 907#if _LIBCPP_STD_VER > 11 908template <> 909struct _LIBCPP_TYPE_VIS_ONLY bit_or<void> 910{ 911 template <class _T1, class _T2> 912 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 913 auto operator()(_T1&& __t, _T2&& __u) const 914 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u))) 915 -> decltype (_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u)) 916 { return _VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u); } 917 typedef void is_transparent; 918}; 919#endif 920 921 922#if _LIBCPP_STD_VER > 11 923template <class _Tp = void> 924#else 925template <class _Tp> 926#endif 927struct _LIBCPP_TYPE_VIS_ONLY bit_xor : binary_function<_Tp, _Tp, _Tp> 928{ 929 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 930 _Tp operator()(const _Tp& __x, const _Tp& __y) const 931 {return __x ^ __y;} 932}; 933 934#if _LIBCPP_STD_VER > 11 935template <> 936struct _LIBCPP_TYPE_VIS_ONLY bit_xor<void> 937{ 938 template <class _T1, class _T2> 939 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 940 auto operator()(_T1&& __t, _T2&& __u) const 941 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u))) 942 -> decltype (_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u)) 943 { return _VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u); } 944 typedef void is_transparent; 945}; 946#endif 947 948 949#if _LIBCPP_STD_VER > 11 950template <class _Tp = void> 951struct _LIBCPP_TYPE_VIS_ONLY bit_not : unary_function<_Tp, _Tp> 952{ 953 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 954 _Tp operator()(const _Tp& __x) const 955 {return ~__x;} 956}; 957 958template <> 959struct _LIBCPP_TYPE_VIS_ONLY bit_not<void> 960{ 961 template <class _Tp> 962 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 963 auto operator()(_Tp&& __x) const 964 _NOEXCEPT_(noexcept(~_VSTD::forward<_Tp>(__x))) 965 -> decltype (~_VSTD::forward<_Tp>(__x)) 966 { return ~_VSTD::forward<_Tp>(__x); } 967 typedef void is_transparent; 968}; 969#endif 970 971template <class _Predicate> 972class _LIBCPP_TYPE_VIS_ONLY unary_negate 973 : public unary_function<typename _Predicate::argument_type, bool> 974{ 975 _Predicate __pred_; 976public: 977 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 978 explicit unary_negate(const _Predicate& __pred) 979 : __pred_(__pred) {} 980 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 981 bool operator()(const typename _Predicate::argument_type& __x) const 982 {return !__pred_(__x);} 983}; 984 985template <class _Predicate> 986inline _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 987unary_negate<_Predicate> 988not1(const _Predicate& __pred) {return unary_negate<_Predicate>(__pred);} 989 990template <class _Predicate> 991class _LIBCPP_TYPE_VIS_ONLY binary_negate 992 : public binary_function<typename _Predicate::first_argument_type, 993 typename _Predicate::second_argument_type, 994 bool> 995{ 996 _Predicate __pred_; 997public: 998 _LIBCPP_INLINE_VISIBILITY explicit _LIBCPP_CONSTEXPR_AFTER_CXX11 999 binary_negate(const _Predicate& __pred) : __pred_(__pred) {} 1000 1001 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1002 bool operator()(const typename _Predicate::first_argument_type& __x, 1003 const typename _Predicate::second_argument_type& __y) const 1004 {return !__pred_(__x, __y);} 1005}; 1006 1007template <class _Predicate> 1008inline _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1009binary_negate<_Predicate> 1010not2(const _Predicate& __pred) {return binary_negate<_Predicate>(__pred);} 1011 1012template <class __Operation> 1013class _LIBCPP_TYPE_VIS_ONLY binder1st 1014 : public unary_function<typename __Operation::second_argument_type, 1015 typename __Operation::result_type> 1016{ 1017protected: 1018 __Operation op; 1019 typename __Operation::first_argument_type value; 1020public: 1021 _LIBCPP_INLINE_VISIBILITY binder1st(const __Operation& __x, 1022 const typename __Operation::first_argument_type __y) 1023 : op(__x), value(__y) {} 1024 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1025 (typename __Operation::second_argument_type& __x) const 1026 {return op(value, __x);} 1027 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1028 (const typename __Operation::second_argument_type& __x) const 1029 {return op(value, __x);} 1030}; 1031 1032template <class __Operation, class _Tp> 1033inline _LIBCPP_INLINE_VISIBILITY 1034binder1st<__Operation> 1035bind1st(const __Operation& __op, const _Tp& __x) 1036 {return binder1st<__Operation>(__op, __x);} 1037 1038template <class __Operation> 1039class _LIBCPP_TYPE_VIS_ONLY binder2nd 1040 : public unary_function<typename __Operation::first_argument_type, 1041 typename __Operation::result_type> 1042{ 1043protected: 1044 __Operation op; 1045 typename __Operation::second_argument_type value; 1046public: 1047 _LIBCPP_INLINE_VISIBILITY 1048 binder2nd(const __Operation& __x, const typename __Operation::second_argument_type __y) 1049 : op(__x), value(__y) {} 1050 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1051 ( typename __Operation::first_argument_type& __x) const 1052 {return op(__x, value);} 1053 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1054 (const typename __Operation::first_argument_type& __x) const 1055 {return op(__x, value);} 1056}; 1057 1058template <class __Operation, class _Tp> 1059inline _LIBCPP_INLINE_VISIBILITY 1060binder2nd<__Operation> 1061bind2nd(const __Operation& __op, const _Tp& __x) 1062 {return binder2nd<__Operation>(__op, __x);} 1063 1064template <class _Arg, class _Result> 1065class _LIBCPP_TYPE_VIS_ONLY pointer_to_unary_function 1066 : public unary_function<_Arg, _Result> 1067{ 1068 _Result (*__f_)(_Arg); 1069public: 1070 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_unary_function(_Result (*__f)(_Arg)) 1071 : __f_(__f) {} 1072 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg __x) const 1073 {return __f_(__x);} 1074}; 1075 1076template <class _Arg, class _Result> 1077inline _LIBCPP_INLINE_VISIBILITY 1078pointer_to_unary_function<_Arg,_Result> 1079ptr_fun(_Result (*__f)(_Arg)) 1080 {return pointer_to_unary_function<_Arg,_Result>(__f);} 1081 1082template <class _Arg1, class _Arg2, class _Result> 1083class _LIBCPP_TYPE_VIS_ONLY pointer_to_binary_function 1084 : public binary_function<_Arg1, _Arg2, _Result> 1085{ 1086 _Result (*__f_)(_Arg1, _Arg2); 1087public: 1088 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_binary_function(_Result (*__f)(_Arg1, _Arg2)) 1089 : __f_(__f) {} 1090 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg1 __x, _Arg2 __y) const 1091 {return __f_(__x, __y);} 1092}; 1093 1094template <class _Arg1, class _Arg2, class _Result> 1095inline _LIBCPP_INLINE_VISIBILITY 1096pointer_to_binary_function<_Arg1,_Arg2,_Result> 1097ptr_fun(_Result (*__f)(_Arg1,_Arg2)) 1098 {return pointer_to_binary_function<_Arg1,_Arg2,_Result>(__f);} 1099 1100template<class _Sp, class _Tp> 1101class _LIBCPP_TYPE_VIS_ONLY mem_fun_t : public unary_function<_Tp*, _Sp> 1102{ 1103 _Sp (_Tp::*__p_)(); 1104public: 1105 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_t(_Sp (_Tp::*__p)()) 1106 : __p_(__p) {} 1107 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p) const 1108 {return (__p->*__p_)();} 1109}; 1110 1111template<class _Sp, class _Tp, class _Ap> 1112class _LIBCPP_TYPE_VIS_ONLY mem_fun1_t : public binary_function<_Tp*, _Ap, _Sp> 1113{ 1114 _Sp (_Tp::*__p_)(_Ap); 1115public: 1116 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_t(_Sp (_Tp::*__p)(_Ap)) 1117 : __p_(__p) {} 1118 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p, _Ap __x) const 1119 {return (__p->*__p_)(__x);} 1120}; 1121 1122template<class _Sp, class _Tp> 1123inline _LIBCPP_INLINE_VISIBILITY 1124mem_fun_t<_Sp,_Tp> 1125mem_fun(_Sp (_Tp::*__f)()) 1126 {return mem_fun_t<_Sp,_Tp>(__f);} 1127 1128template<class _Sp, class _Tp, class _Ap> 1129inline _LIBCPP_INLINE_VISIBILITY 1130mem_fun1_t<_Sp,_Tp,_Ap> 1131mem_fun(_Sp (_Tp::*__f)(_Ap)) 1132 {return mem_fun1_t<_Sp,_Tp,_Ap>(__f);} 1133 1134template<class _Sp, class _Tp> 1135class _LIBCPP_TYPE_VIS_ONLY mem_fun_ref_t : public unary_function<_Tp, _Sp> 1136{ 1137 _Sp (_Tp::*__p_)(); 1138public: 1139 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_ref_t(_Sp (_Tp::*__p)()) 1140 : __p_(__p) {} 1141 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p) const 1142 {return (__p.*__p_)();} 1143}; 1144 1145template<class _Sp, class _Tp, class _Ap> 1146class _LIBCPP_TYPE_VIS_ONLY mem_fun1_ref_t : public binary_function<_Tp, _Ap, _Sp> 1147{ 1148 _Sp (_Tp::*__p_)(_Ap); 1149public: 1150 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap)) 1151 : __p_(__p) {} 1152 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p, _Ap __x) const 1153 {return (__p.*__p_)(__x);} 1154}; 1155 1156template<class _Sp, class _Tp> 1157inline _LIBCPP_INLINE_VISIBILITY 1158mem_fun_ref_t<_Sp,_Tp> 1159mem_fun_ref(_Sp (_Tp::*__f)()) 1160 {return mem_fun_ref_t<_Sp,_Tp>(__f);} 1161 1162template<class _Sp, class _Tp, class _Ap> 1163inline _LIBCPP_INLINE_VISIBILITY 1164mem_fun1_ref_t<_Sp,_Tp,_Ap> 1165mem_fun_ref(_Sp (_Tp::*__f)(_Ap)) 1166 {return mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} 1167 1168template <class _Sp, class _Tp> 1169class _LIBCPP_TYPE_VIS_ONLY const_mem_fun_t : public unary_function<const _Tp*, _Sp> 1170{ 1171 _Sp (_Tp::*__p_)() const; 1172public: 1173 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_t(_Sp (_Tp::*__p)() const) 1174 : __p_(__p) {} 1175 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p) const 1176 {return (__p->*__p_)();} 1177}; 1178 1179template <class _Sp, class _Tp, class _Ap> 1180class _LIBCPP_TYPE_VIS_ONLY const_mem_fun1_t : public binary_function<const _Tp*, _Ap, _Sp> 1181{ 1182 _Sp (_Tp::*__p_)(_Ap) const; 1183public: 1184 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_t(_Sp (_Tp::*__p)(_Ap) const) 1185 : __p_(__p) {} 1186 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p, _Ap __x) const 1187 {return (__p->*__p_)(__x);} 1188}; 1189 1190template <class _Sp, class _Tp> 1191inline _LIBCPP_INLINE_VISIBILITY 1192const_mem_fun_t<_Sp,_Tp> 1193mem_fun(_Sp (_Tp::*__f)() const) 1194 {return const_mem_fun_t<_Sp,_Tp>(__f);} 1195 1196template <class _Sp, class _Tp, class _Ap> 1197inline _LIBCPP_INLINE_VISIBILITY 1198const_mem_fun1_t<_Sp,_Tp,_Ap> 1199mem_fun(_Sp (_Tp::*__f)(_Ap) const) 1200 {return const_mem_fun1_t<_Sp,_Tp,_Ap>(__f);} 1201 1202template <class _Sp, class _Tp> 1203class _LIBCPP_TYPE_VIS_ONLY const_mem_fun_ref_t : public unary_function<_Tp, _Sp> 1204{ 1205 _Sp (_Tp::*__p_)() const; 1206public: 1207 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_ref_t(_Sp (_Tp::*__p)() const) 1208 : __p_(__p) {} 1209 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p) const 1210 {return (__p.*__p_)();} 1211}; 1212 1213template <class _Sp, class _Tp, class _Ap> 1214class _LIBCPP_TYPE_VIS_ONLY const_mem_fun1_ref_t 1215 : public binary_function<_Tp, _Ap, _Sp> 1216{ 1217 _Sp (_Tp::*__p_)(_Ap) const; 1218public: 1219 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap) const) 1220 : __p_(__p) {} 1221 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p, _Ap __x) const 1222 {return (__p.*__p_)(__x);} 1223}; 1224 1225template <class _Sp, class _Tp> 1226inline _LIBCPP_INLINE_VISIBILITY 1227const_mem_fun_ref_t<_Sp,_Tp> 1228mem_fun_ref(_Sp (_Tp::*__f)() const) 1229 {return const_mem_fun_ref_t<_Sp,_Tp>(__f);} 1230 1231template <class _Sp, class _Tp, class _Ap> 1232inline _LIBCPP_INLINE_VISIBILITY 1233const_mem_fun1_ref_t<_Sp,_Tp,_Ap> 1234mem_fun_ref(_Sp (_Tp::*__f)(_Ap) const) 1235 {return const_mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} 1236 1237#ifdef _LIBCPP_HAS_NO_VARIADICS 1238 1239#include <__functional_03> 1240 1241#else // _LIBCPP_HAS_NO_VARIADICS 1242 1243template <class _Tp> 1244class __mem_fn 1245 : public __weak_result_type<_Tp> 1246{ 1247public: 1248 // types 1249 typedef _Tp type; 1250private: 1251 type __f_; 1252 1253public: 1254 _LIBCPP_INLINE_VISIBILITY __mem_fn(type __f) : __f_(__f) {} 1255 1256 // invoke 1257 template <class... _ArgTypes> 1258 _LIBCPP_INLINE_VISIBILITY 1259 typename __invoke_return<type, _ArgTypes...>::type 1260 operator() (_ArgTypes&&... __args) const 1261 { 1262 return __invoke(__f_, _VSTD::forward<_ArgTypes>(__args)...); 1263 } 1264}; 1265 1266template<class _Rp, class _Tp> 1267inline _LIBCPP_INLINE_VISIBILITY 1268__mem_fn<_Rp _Tp::*> 1269mem_fn(_Rp _Tp::* __pm) 1270{ 1271 return __mem_fn<_Rp _Tp::*>(__pm); 1272} 1273 1274// bad_function_call 1275 1276class _LIBCPP_EXCEPTION_ABI bad_function_call 1277 : public exception 1278{ 1279}; 1280 1281template<class _Fp> class _LIBCPP_TYPE_VIS_ONLY function; // undefined 1282 1283namespace __function 1284{ 1285 1286template<class _Rp, class ..._ArgTypes> 1287struct __maybe_derive_from_unary_function 1288{ 1289}; 1290 1291template<class _Rp, class _A1> 1292struct __maybe_derive_from_unary_function<_Rp(_A1)> 1293 : public unary_function<_A1, _Rp> 1294{ 1295}; 1296 1297template<class _Rp, class ..._ArgTypes> 1298struct __maybe_derive_from_binary_function 1299{ 1300}; 1301 1302template<class _Rp, class _A1, class _A2> 1303struct __maybe_derive_from_binary_function<_Rp(_A1, _A2)> 1304 : public binary_function<_A1, _A2, _Rp> 1305{ 1306}; 1307 1308template<class _Fp> class __base; 1309 1310template<class _Rp, class ..._ArgTypes> 1311class __base<_Rp(_ArgTypes...)> 1312{ 1313 __base(const __base&); 1314 __base& operator=(const __base&); 1315public: 1316 _LIBCPP_INLINE_VISIBILITY __base() {} 1317 _LIBCPP_INLINE_VISIBILITY virtual ~__base() {} 1318 virtual __base* __clone() const = 0; 1319 virtual void __clone(__base*) const = 0; 1320 virtual void destroy() _NOEXCEPT = 0; 1321 virtual void destroy_deallocate() _NOEXCEPT = 0; 1322 virtual _Rp operator()(_ArgTypes&& ...) = 0; 1323#ifndef _LIBCPP_NO_RTTI 1324 virtual const void* target(const type_info&) const _NOEXCEPT = 0; 1325 virtual const std::type_info& target_type() const _NOEXCEPT = 0; 1326#endif // _LIBCPP_NO_RTTI 1327}; 1328 1329template<class _FD, class _Alloc, class _FB> class __func; 1330 1331template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1332class __func<_Fp, _Alloc, _Rp(_ArgTypes...)> 1333 : public __base<_Rp(_ArgTypes...)> 1334{ 1335 __compressed_pair<_Fp, _Alloc> __f_; 1336public: 1337 _LIBCPP_INLINE_VISIBILITY 1338 explicit __func(_Fp&& __f) 1339 : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), 1340 _VSTD::forward_as_tuple()) {} 1341 _LIBCPP_INLINE_VISIBILITY 1342 explicit __func(const _Fp& __f, const _Alloc& __a) 1343 : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), 1344 _VSTD::forward_as_tuple(__a)) {} 1345 1346 _LIBCPP_INLINE_VISIBILITY 1347 explicit __func(const _Fp& __f, _Alloc&& __a) 1348 : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), 1349 _VSTD::forward_as_tuple(_VSTD::move(__a))) {} 1350 1351 _LIBCPP_INLINE_VISIBILITY 1352 explicit __func(_Fp&& __f, _Alloc&& __a) 1353 : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), 1354 _VSTD::forward_as_tuple(_VSTD::move(__a))) {} 1355 virtual __base<_Rp(_ArgTypes...)>* __clone() const; 1356 virtual void __clone(__base<_Rp(_ArgTypes...)>*) const; 1357 virtual void destroy() _NOEXCEPT; 1358 virtual void destroy_deallocate() _NOEXCEPT; 1359 virtual _Rp operator()(_ArgTypes&& ... __arg); 1360#ifndef _LIBCPP_NO_RTTI 1361 virtual const void* target(const type_info&) const _NOEXCEPT; 1362 virtual const std::type_info& target_type() const _NOEXCEPT; 1363#endif // _LIBCPP_NO_RTTI 1364}; 1365 1366template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1367__base<_Rp(_ArgTypes...)>* 1368__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone() const 1369{ 1370 typedef allocator_traits<_Alloc> __alloc_traits; 1371 typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; 1372 _Ap __a(__f_.second()); 1373 typedef __allocator_destructor<_Ap> _Dp; 1374 unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1375 ::new (__hold.get()) __func(__f_.first(), _Alloc(__a)); 1376 return __hold.release(); 1377} 1378 1379template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1380void 1381__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone(__base<_Rp(_ArgTypes...)>* __p) const 1382{ 1383 ::new (__p) __func(__f_.first(), __f_.second()); 1384} 1385 1386template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1387void 1388__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy() _NOEXCEPT 1389{ 1390 __f_.~__compressed_pair<_Fp, _Alloc>(); 1391} 1392 1393template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1394void 1395__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy_deallocate() _NOEXCEPT 1396{ 1397 typedef allocator_traits<_Alloc> __alloc_traits; 1398 typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; 1399 _Ap __a(__f_.second()); 1400 __f_.~__compressed_pair<_Fp, _Alloc>(); 1401 __a.deallocate(this, 1); 1402} 1403 1404template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1405_Rp 1406__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::operator()(_ArgTypes&& ... __arg) 1407{ 1408 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 1409 return _Invoker::__call(__f_.first(), _VSTD::forward<_ArgTypes>(__arg)...); 1410} 1411 1412#ifndef _LIBCPP_NO_RTTI 1413 1414template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1415const void* 1416__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target(const type_info& __ti) const _NOEXCEPT 1417{ 1418 if (__ti == typeid(_Fp)) 1419 return &__f_.first(); 1420 return (const void*)0; 1421} 1422 1423template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1424const std::type_info& 1425__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target_type() const _NOEXCEPT 1426{ 1427 return typeid(_Fp); 1428} 1429 1430#endif // _LIBCPP_NO_RTTI 1431 1432} // __function 1433 1434template<class _Rp, class ..._ArgTypes> 1435class _LIBCPP_TYPE_VIS_ONLY function<_Rp(_ArgTypes...)> 1436 : public __function::__maybe_derive_from_unary_function<_Rp(_ArgTypes...)>, 1437 public __function::__maybe_derive_from_binary_function<_Rp(_ArgTypes...)> 1438{ 1439 typedef __function::__base<_Rp(_ArgTypes...)> __base; 1440 typename aligned_storage<3*sizeof(void*)>::type __buf_; 1441 __base* __f_; 1442 1443 template <class _Fp> 1444 _LIBCPP_INLINE_VISIBILITY 1445 static bool __not_null(const _Fp&) {return true;} 1446 template <class _R2, class ..._Ap> 1447 _LIBCPP_INLINE_VISIBILITY 1448 static bool __not_null(_R2 (*__p)(_Ap...)) {return __p;} 1449 template <class _R2, class _Cp, class ..._Ap> 1450 _LIBCPP_INLINE_VISIBILITY 1451 static bool __not_null(_R2 (_Cp::*__p)(_Ap...)) {return __p;} 1452 template <class _R2, class _Cp, class ..._Ap> 1453 _LIBCPP_INLINE_VISIBILITY 1454 static bool __not_null(_R2 (_Cp::*__p)(_Ap...) const) {return __p;} 1455 template <class _R2, class _Cp, class ..._Ap> 1456 _LIBCPP_INLINE_VISIBILITY 1457 static bool __not_null(_R2 (_Cp::*__p)(_Ap...) volatile) {return __p;} 1458 template <class _R2, class _Cp, class ..._Ap> 1459 _LIBCPP_INLINE_VISIBILITY 1460 static bool __not_null(_R2 (_Cp::*__p)(_Ap...) const volatile) {return __p;} 1461 template <class _R2, class ..._Ap> 1462 _LIBCPP_INLINE_VISIBILITY 1463 static bool __not_null(const function<_R2(_Ap...)>& __p) {return !!__p;} 1464 1465 template <class _Fp, bool = !is_same<_Fp, function>::value && 1466 __invokable<_Fp&, _ArgTypes...>::value> 1467 struct __callable; 1468 template <class _Fp> 1469 struct __callable<_Fp, true> 1470 { 1471 static const bool value = is_same<void, _Rp>::value || 1472 is_convertible<typename __invoke_of<_Fp&, _ArgTypes...>::type, 1473 _Rp>::value; 1474 }; 1475 template <class _Fp> 1476 struct __callable<_Fp, false> 1477 { 1478 static const bool value = false; 1479 }; 1480public: 1481 typedef _Rp result_type; 1482 1483 // construct/copy/destroy: 1484 _LIBCPP_INLINE_VISIBILITY 1485 function() _NOEXCEPT : __f_(0) {} 1486 _LIBCPP_INLINE_VISIBILITY 1487 function(nullptr_t) _NOEXCEPT : __f_(0) {} 1488 function(const function&); 1489 function(function&&) _NOEXCEPT; 1490 template<class _Fp> 1491 function(_Fp, typename enable_if 1492 < 1493 __callable<_Fp>::value && 1494 !is_same<_Fp, function>::value 1495 >::type* = 0); 1496 1497 template<class _Alloc> 1498 _LIBCPP_INLINE_VISIBILITY 1499 function(allocator_arg_t, const _Alloc&) _NOEXCEPT : __f_(0) {} 1500 template<class _Alloc> 1501 _LIBCPP_INLINE_VISIBILITY 1502 function(allocator_arg_t, const _Alloc&, nullptr_t) _NOEXCEPT : __f_(0) {} 1503 template<class _Alloc> 1504 function(allocator_arg_t, const _Alloc&, const function&); 1505 template<class _Alloc> 1506 function(allocator_arg_t, const _Alloc&, function&&); 1507 template<class _Fp, class _Alloc> 1508 function(allocator_arg_t, const _Alloc& __a, _Fp __f, 1509 typename enable_if<__callable<_Fp>::value>::type* = 0); 1510 1511 function& operator=(const function&); 1512 function& operator=(function&&) _NOEXCEPT; 1513 function& operator=(nullptr_t) _NOEXCEPT; 1514 template<class _Fp> 1515 typename enable_if 1516 < 1517 __callable<typename decay<_Fp>::type>::value && 1518 !is_same<typename remove_reference<_Fp>::type, function>::value, 1519 function& 1520 >::type 1521 operator=(_Fp&&); 1522 1523 ~function(); 1524 1525 // function modifiers: 1526 void swap(function&) _NOEXCEPT; 1527 template<class _Fp, class _Alloc> 1528 _LIBCPP_INLINE_VISIBILITY 1529 void assign(_Fp&& __f, const _Alloc& __a) 1530 {function(allocator_arg, __a, _VSTD::forward<_Fp>(__f)).swap(*this);} 1531 1532 // function capacity: 1533 _LIBCPP_INLINE_VISIBILITY 1534 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return __f_;} 1535 1536 // deleted overloads close possible hole in the type system 1537 template<class _R2, class... _ArgTypes2> 1538 bool operator==(const function<_R2(_ArgTypes2...)>&) const = delete; 1539 template<class _R2, class... _ArgTypes2> 1540 bool operator!=(const function<_R2(_ArgTypes2...)>&) const = delete; 1541public: 1542 // function invocation: 1543 _Rp operator()(_ArgTypes...) const; 1544 1545#ifndef _LIBCPP_NO_RTTI 1546 // function target access: 1547 const std::type_info& target_type() const _NOEXCEPT; 1548 template <typename _Tp> _Tp* target() _NOEXCEPT; 1549 template <typename _Tp> const _Tp* target() const _NOEXCEPT; 1550#endif // _LIBCPP_NO_RTTI 1551}; 1552 1553template<class _Rp, class ..._ArgTypes> 1554function<_Rp(_ArgTypes...)>::function(const function& __f) 1555{ 1556 if (__f.__f_ == 0) 1557 __f_ = 0; 1558 else if (__f.__f_ == (const __base*)&__f.__buf_) 1559 { 1560 __f_ = (__base*)&__buf_; 1561 __f.__f_->__clone(__f_); 1562 } 1563 else 1564 __f_ = __f.__f_->__clone(); 1565} 1566 1567template<class _Rp, class ..._ArgTypes> 1568template <class _Alloc> 1569function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, 1570 const function& __f) 1571{ 1572 if (__f.__f_ == 0) 1573 __f_ = 0; 1574 else if (__f.__f_ == (const __base*)&__f.__buf_) 1575 { 1576 __f_ = (__base*)&__buf_; 1577 __f.__f_->__clone(__f_); 1578 } 1579 else 1580 __f_ = __f.__f_->__clone(); 1581} 1582 1583template<class _Rp, class ..._ArgTypes> 1584function<_Rp(_ArgTypes...)>::function(function&& __f) _NOEXCEPT 1585{ 1586 if (__f.__f_ == 0) 1587 __f_ = 0; 1588 else if (__f.__f_ == (__base*)&__f.__buf_) 1589 { 1590 __f_ = (__base*)&__buf_; 1591 __f.__f_->__clone(__f_); 1592 } 1593 else 1594 { 1595 __f_ = __f.__f_; 1596 __f.__f_ = 0; 1597 } 1598} 1599 1600template<class _Rp, class ..._ArgTypes> 1601template <class _Alloc> 1602function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, 1603 function&& __f) 1604{ 1605 if (__f.__f_ == 0) 1606 __f_ = 0; 1607 else if (__f.__f_ == (__base*)&__f.__buf_) 1608 { 1609 __f_ = (__base*)&__buf_; 1610 __f.__f_->__clone(__f_); 1611 } 1612 else 1613 { 1614 __f_ = __f.__f_; 1615 __f.__f_ = 0; 1616 } 1617} 1618 1619template<class _Rp, class ..._ArgTypes> 1620template <class _Fp> 1621function<_Rp(_ArgTypes...)>::function(_Fp __f, 1622 typename enable_if 1623 < 1624 __callable<_Fp>::value && 1625 !is_same<_Fp, function>::value 1626 >::type*) 1627 : __f_(0) 1628{ 1629 if (__not_null(__f)) 1630 { 1631 typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_ArgTypes...)> _FF; 1632 if (sizeof(_FF) <= sizeof(__buf_) && is_nothrow_copy_constructible<_Fp>::value) 1633 { 1634 __f_ = (__base*)&__buf_; 1635 ::new (__f_) _FF(_VSTD::move(__f)); 1636 } 1637 else 1638 { 1639 typedef allocator<_FF> _Ap; 1640 _Ap __a; 1641 typedef __allocator_destructor<_Ap> _Dp; 1642 unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1643 ::new (__hold.get()) _FF(_VSTD::move(__f), allocator<_Fp>(__a)); 1644 __f_ = __hold.release(); 1645 } 1646 } 1647} 1648 1649template<class _Rp, class ..._ArgTypes> 1650template <class _Fp, class _Alloc> 1651function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f, 1652 typename enable_if<__callable<_Fp>::value>::type*) 1653 : __f_(0) 1654{ 1655 typedef allocator_traits<_Alloc> __alloc_traits; 1656 if (__not_null(__f)) 1657 { 1658 typedef __function::__func<_Fp, _Alloc, _Rp(_ArgTypes...)> _FF; 1659 typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap; 1660 _Ap __a(__a0); 1661 if (sizeof(_FF) <= sizeof(__buf_) && 1662 is_nothrow_copy_constructible<_Fp>::value && is_nothrow_copy_constructible<_Ap>::value) 1663 { 1664 __f_ = (__base*)&__buf_; 1665 ::new (__f_) _FF(_VSTD::move(__f), _Alloc(__a)); 1666 } 1667 else 1668 { 1669 typedef __allocator_destructor<_Ap> _Dp; 1670 unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1671 ::new (__hold.get()) _FF(_VSTD::move(__f), _Alloc(__a)); 1672 __f_ = __hold.release(); 1673 } 1674 } 1675} 1676 1677template<class _Rp, class ..._ArgTypes> 1678function<_Rp(_ArgTypes...)>& 1679function<_Rp(_ArgTypes...)>::operator=(const function& __f) 1680{ 1681 function(__f).swap(*this); 1682 return *this; 1683} 1684 1685template<class _Rp, class ..._ArgTypes> 1686function<_Rp(_ArgTypes...)>& 1687function<_Rp(_ArgTypes...)>::operator=(function&& __f) _NOEXCEPT 1688{ 1689 if (__f_ == (__base*)&__buf_) 1690 __f_->destroy(); 1691 else if (__f_) 1692 __f_->destroy_deallocate(); 1693 __f_ = 0; 1694 if (__f.__f_ == 0) 1695 __f_ = 0; 1696 else if (__f.__f_ == (__base*)&__f.__buf_) 1697 { 1698 __f_ = (__base*)&__buf_; 1699 __f.__f_->__clone(__f_); 1700 } 1701 else 1702 { 1703 __f_ = __f.__f_; 1704 __f.__f_ = 0; 1705 } 1706 return *this; 1707} 1708 1709template<class _Rp, class ..._ArgTypes> 1710function<_Rp(_ArgTypes...)>& 1711function<_Rp(_ArgTypes...)>::operator=(nullptr_t) _NOEXCEPT 1712{ 1713 if (__f_ == (__base*)&__buf_) 1714 __f_->destroy(); 1715 else if (__f_) 1716 __f_->destroy_deallocate(); 1717 __f_ = 0; 1718 return *this; 1719} 1720 1721template<class _Rp, class ..._ArgTypes> 1722template <class _Fp> 1723typename enable_if 1724< 1725 function<_Rp(_ArgTypes...)>::template __callable<typename decay<_Fp>::type>::value && 1726 !is_same<typename remove_reference<_Fp>::type, function<_Rp(_ArgTypes...)>>::value, 1727 function<_Rp(_ArgTypes...)>& 1728>::type 1729function<_Rp(_ArgTypes...)>::operator=(_Fp&& __f) 1730{ 1731 function(_VSTD::forward<_Fp>(__f)).swap(*this); 1732 return *this; 1733} 1734 1735template<class _Rp, class ..._ArgTypes> 1736function<_Rp(_ArgTypes...)>::~function() 1737{ 1738 if (__f_ == (__base*)&__buf_) 1739 __f_->destroy(); 1740 else if (__f_) 1741 __f_->destroy_deallocate(); 1742} 1743 1744template<class _Rp, class ..._ArgTypes> 1745void 1746function<_Rp(_ArgTypes...)>::swap(function& __f) _NOEXCEPT 1747{ 1748 if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_) 1749 { 1750 typename aligned_storage<sizeof(__buf_)>::type __tempbuf; 1751 __base* __t = (__base*)&__tempbuf; 1752 __f_->__clone(__t); 1753 __f_->destroy(); 1754 __f_ = 0; 1755 __f.__f_->__clone((__base*)&__buf_); 1756 __f.__f_->destroy(); 1757 __f.__f_ = 0; 1758 __f_ = (__base*)&__buf_; 1759 __t->__clone((__base*)&__f.__buf_); 1760 __t->destroy(); 1761 __f.__f_ = (__base*)&__f.__buf_; 1762 } 1763 else if (__f_ == (__base*)&__buf_) 1764 { 1765 __f_->__clone((__base*)&__f.__buf_); 1766 __f_->destroy(); 1767 __f_ = __f.__f_; 1768 __f.__f_ = (__base*)&__f.__buf_; 1769 } 1770 else if (__f.__f_ == (__base*)&__f.__buf_) 1771 { 1772 __f.__f_->__clone((__base*)&__buf_); 1773 __f.__f_->destroy(); 1774 __f.__f_ = __f_; 1775 __f_ = (__base*)&__buf_; 1776 } 1777 else 1778 _VSTD::swap(__f_, __f.__f_); 1779} 1780 1781template<class _Rp, class ..._ArgTypes> 1782_Rp 1783function<_Rp(_ArgTypes...)>::operator()(_ArgTypes... __arg) const 1784{ 1785#ifndef _LIBCPP_NO_EXCEPTIONS 1786 if (__f_ == 0) 1787 throw bad_function_call(); 1788#endif // _LIBCPP_NO_EXCEPTIONS 1789 return (*__f_)(_VSTD::forward<_ArgTypes>(__arg)...); 1790} 1791 1792#ifndef _LIBCPP_NO_RTTI 1793 1794template<class _Rp, class ..._ArgTypes> 1795const std::type_info& 1796function<_Rp(_ArgTypes...)>::target_type() const _NOEXCEPT 1797{ 1798 if (__f_ == 0) 1799 return typeid(void); 1800 return __f_->target_type(); 1801} 1802 1803template<class _Rp, class ..._ArgTypes> 1804template <typename _Tp> 1805_Tp* 1806function<_Rp(_ArgTypes...)>::target() _NOEXCEPT 1807{ 1808 if (__f_ == 0) 1809 return (_Tp*)0; 1810 return (_Tp*)__f_->target(typeid(_Tp)); 1811} 1812 1813template<class _Rp, class ..._ArgTypes> 1814template <typename _Tp> 1815const _Tp* 1816function<_Rp(_ArgTypes...)>::target() const _NOEXCEPT 1817{ 1818 if (__f_ == 0) 1819 return (const _Tp*)0; 1820 return (const _Tp*)__f_->target(typeid(_Tp)); 1821} 1822 1823#endif // _LIBCPP_NO_RTTI 1824 1825template <class _Rp, class... _ArgTypes> 1826inline _LIBCPP_INLINE_VISIBILITY 1827bool 1828operator==(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return !__f;} 1829 1830template <class _Rp, class... _ArgTypes> 1831inline _LIBCPP_INLINE_VISIBILITY 1832bool 1833operator==(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return !__f;} 1834 1835template <class _Rp, class... _ArgTypes> 1836inline _LIBCPP_INLINE_VISIBILITY 1837bool 1838operator!=(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return (bool)__f;} 1839 1840template <class _Rp, class... _ArgTypes> 1841inline _LIBCPP_INLINE_VISIBILITY 1842bool 1843operator!=(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return (bool)__f;} 1844 1845template <class _Rp, class... _ArgTypes> 1846inline _LIBCPP_INLINE_VISIBILITY 1847void 1848swap(function<_Rp(_ArgTypes...)>& __x, function<_Rp(_ArgTypes...)>& __y) _NOEXCEPT 1849{return __x.swap(__y);} 1850 1851template<class _Tp> struct __is_bind_expression : public false_type {}; 1852template<class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_bind_expression 1853 : public __is_bind_expression<typename remove_cv<_Tp>::type> {}; 1854 1855template<class _Tp> struct __is_placeholder : public integral_constant<int, 0> {}; 1856template<class _Tp> struct _LIBCPP_TYPE_VIS_ONLY is_placeholder 1857 : public __is_placeholder<typename remove_cv<_Tp>::type> {}; 1858 1859namespace placeholders 1860{ 1861 1862template <int _Np> struct __ph {}; 1863 1864_LIBCPP_FUNC_VIS extern __ph<1> _1; 1865_LIBCPP_FUNC_VIS extern __ph<2> _2; 1866_LIBCPP_FUNC_VIS extern __ph<3> _3; 1867_LIBCPP_FUNC_VIS extern __ph<4> _4; 1868_LIBCPP_FUNC_VIS extern __ph<5> _5; 1869_LIBCPP_FUNC_VIS extern __ph<6> _6; 1870_LIBCPP_FUNC_VIS extern __ph<7> _7; 1871_LIBCPP_FUNC_VIS extern __ph<8> _8; 1872_LIBCPP_FUNC_VIS extern __ph<9> _9; 1873_LIBCPP_FUNC_VIS extern __ph<10> _10; 1874 1875} // placeholders 1876 1877template<int _Np> 1878struct __is_placeholder<placeholders::__ph<_Np> > 1879 : public integral_constant<int, _Np> {}; 1880 1881template <class _Tp, class _Uj> 1882inline _LIBCPP_INLINE_VISIBILITY 1883_Tp& 1884__mu(reference_wrapper<_Tp> __t, _Uj&) 1885{ 1886 return __t.get(); 1887} 1888 1889template <class _Ti, class ..._Uj, size_t ..._Indx> 1890inline _LIBCPP_INLINE_VISIBILITY 1891typename __invoke_of<_Ti&, _Uj...>::type 1892__mu_expand(_Ti& __ti, tuple<_Uj...>& __uj, __tuple_indices<_Indx...>) 1893{ 1894 return __ti(_VSTD::forward<_Uj>(_VSTD::get<_Indx>(__uj))...); 1895} 1896 1897template <class _Ti, class ..._Uj> 1898inline _LIBCPP_INLINE_VISIBILITY 1899typename __lazy_enable_if 1900< 1901 is_bind_expression<_Ti>::value, 1902 __invoke_of<_Ti&, _Uj...> 1903>::type 1904__mu(_Ti& __ti, tuple<_Uj...>& __uj) 1905{ 1906 typedef typename __make_tuple_indices<sizeof...(_Uj)>::type __indices; 1907 return __mu_expand(__ti, __uj, __indices()); 1908} 1909 1910template <bool IsPh, class _Ti, class _Uj> 1911struct __mu_return2 {}; 1912 1913template <class _Ti, class _Uj> 1914struct __mu_return2<true, _Ti, _Uj> 1915{ 1916 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, _Uj>::type type; 1917}; 1918 1919template <class _Ti, class _Uj> 1920inline _LIBCPP_INLINE_VISIBILITY 1921typename enable_if 1922< 1923 0 < is_placeholder<_Ti>::value, 1924 typename __mu_return2<0 < is_placeholder<_Ti>::value, _Ti, _Uj>::type 1925>::type 1926__mu(_Ti&, _Uj& __uj) 1927{ 1928 const size_t _Indx = is_placeholder<_Ti>::value - 1; 1929 return _VSTD::forward<typename tuple_element<_Indx, _Uj>::type>(_VSTD::get<_Indx>(__uj)); 1930} 1931 1932template <class _Ti, class _Uj> 1933inline _LIBCPP_INLINE_VISIBILITY 1934typename enable_if 1935< 1936 !is_bind_expression<_Ti>::value && 1937 is_placeholder<_Ti>::value == 0 && 1938 !__is_reference_wrapper<_Ti>::value, 1939 _Ti& 1940>::type 1941__mu(_Ti& __ti, _Uj&) 1942{ 1943 return __ti; 1944} 1945 1946template <class _Ti, bool IsReferenceWrapper, bool IsBindEx, bool IsPh, 1947 class _TupleUj> 1948struct ____mu_return; 1949 1950template <bool _Invokable, class _Ti, class ..._Uj> 1951struct ____mu_return_invokable // false 1952{ 1953 typedef __nat type; 1954}; 1955 1956template <class _Ti, class ..._Uj> 1957struct ____mu_return_invokable<true, _Ti, _Uj...> 1958{ 1959 typedef typename __invoke_of<_Ti&, _Uj...>::type type; 1960}; 1961 1962template <class _Ti, class ..._Uj> 1963struct ____mu_return<_Ti, false, true, false, tuple<_Uj...> > 1964 : public ____mu_return_invokable<__invokable<_Ti&, _Uj...>::value, _Ti, _Uj...> 1965{ 1966}; 1967 1968template <class _Ti, class _TupleUj> 1969struct ____mu_return<_Ti, false, false, true, _TupleUj> 1970{ 1971 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, 1972 _TupleUj>::type&& type; 1973}; 1974 1975template <class _Ti, class _TupleUj> 1976struct ____mu_return<_Ti, true, false, false, _TupleUj> 1977{ 1978 typedef typename _Ti::type& type; 1979}; 1980 1981template <class _Ti, class _TupleUj> 1982struct ____mu_return<_Ti, false, false, false, _TupleUj> 1983{ 1984 typedef _Ti& type; 1985}; 1986 1987template <class _Ti, class _TupleUj> 1988struct __mu_return 1989 : public ____mu_return<_Ti, 1990 __is_reference_wrapper<_Ti>::value, 1991 is_bind_expression<_Ti>::value, 1992 0 < is_placeholder<_Ti>::value && 1993 is_placeholder<_Ti>::value <= tuple_size<_TupleUj>::value, 1994 _TupleUj> 1995{ 1996}; 1997 1998template <class _Fp, class _BoundArgs, class _TupleUj> 1999struct __is_valid_bind_return 2000{ 2001 static const bool value = false; 2002}; 2003 2004template <class _Fp, class ..._BoundArgs, class _TupleUj> 2005struct __is_valid_bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj> 2006{ 2007 static const bool value = __invokable<_Fp, 2008 typename __mu_return<_BoundArgs, _TupleUj>::type...>::value; 2009}; 2010 2011template <class _Fp, class ..._BoundArgs, class _TupleUj> 2012struct __is_valid_bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj> 2013{ 2014 static const bool value = __invokable<_Fp, 2015 typename __mu_return<const _BoundArgs, _TupleUj>::type...>::value; 2016}; 2017 2018template <class _Fp, class _BoundArgs, class _TupleUj, 2019 bool = __is_valid_bind_return<_Fp, _BoundArgs, _TupleUj>::value> 2020struct __bind_return; 2021 2022template <class _Fp, class ..._BoundArgs, class _TupleUj> 2023struct __bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj, true> 2024{ 2025 typedef typename __invoke_of 2026 < 2027 _Fp&, 2028 typename __mu_return 2029 < 2030 _BoundArgs, 2031 _TupleUj 2032 >::type... 2033 >::type type; 2034}; 2035 2036template <class _Fp, class ..._BoundArgs, class _TupleUj> 2037struct __bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj, true> 2038{ 2039 typedef typename __invoke_of 2040 < 2041 _Fp&, 2042 typename __mu_return 2043 < 2044 const _BoundArgs, 2045 _TupleUj 2046 >::type... 2047 >::type type; 2048}; 2049 2050template <class _Fp, class _BoundArgs, size_t ..._Indx, class _Args> 2051inline _LIBCPP_INLINE_VISIBILITY 2052typename __bind_return<_Fp, _BoundArgs, _Args>::type 2053__apply_functor(_Fp& __f, _BoundArgs& __bound_args, __tuple_indices<_Indx...>, 2054 _Args&& __args) 2055{ 2056 return __invoke(__f, __mu(_VSTD::get<_Indx>(__bound_args), __args)...); 2057} 2058 2059template<class _Fp, class ..._BoundArgs> 2060class __bind 2061 : public __weak_result_type<typename decay<_Fp>::type> 2062{ 2063protected: 2064 typedef typename decay<_Fp>::type _Fd; 2065 typedef tuple<typename decay<_BoundArgs>::type...> _Td; 2066private: 2067 _Fd __f_; 2068 _Td __bound_args_; 2069 2070 typedef typename __make_tuple_indices<sizeof...(_BoundArgs)>::type __indices; 2071public: 2072#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2073 2074 _LIBCPP_INLINE_VISIBILITY 2075 __bind(const __bind& __b) 2076 : __f_(__b.__f_), 2077 __bound_args_(__b.__bound_args_) {} 2078 2079 _LIBCPP_INLINE_VISIBILITY 2080 __bind& operator=(const __bind& __b) 2081 { 2082 __f_ = __b.__f_; 2083 __bound_args_ = __b.__bound_args_; 2084 return *this; 2085 } 2086 2087 _LIBCPP_INLINE_VISIBILITY 2088 __bind(__bind&& __b) 2089 : __f_(_VSTD::move(__b.__f_)), 2090 __bound_args_(_VSTD::move(__b.__bound_args_)) {} 2091 2092 _LIBCPP_INLINE_VISIBILITY 2093 __bind& operator=(__bind&& __b) 2094 { 2095 __f_ = _VSTD::move(__b.__f_); 2096 __bound_args_ = _VSTD::move(__b.__bound_args_); 2097 return *this; 2098 } 2099 2100#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2101 2102 template <class _Gp, class ..._BA, 2103 class = typename enable_if 2104 < 2105 is_constructible<_Fd, _Gp>::value && 2106 !is_same<typename remove_reference<_Gp>::type, 2107 __bind>::value 2108 >::type> 2109 _LIBCPP_INLINE_VISIBILITY 2110 explicit __bind(_Gp&& __f, _BA&& ...__bound_args) 2111 : __f_(_VSTD::forward<_Gp>(__f)), 2112 __bound_args_(_VSTD::forward<_BA>(__bound_args)...) {} 2113 2114 template <class ..._Args> 2115 _LIBCPP_INLINE_VISIBILITY 2116 typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type 2117 operator()(_Args&& ...__args) 2118 { 2119 return __apply_functor(__f_, __bound_args_, __indices(), 2120 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); 2121 } 2122 2123 template <class ..._Args> 2124 _LIBCPP_INLINE_VISIBILITY 2125 typename __bind_return<const _Fd, const _Td, tuple<_Args&&...> >::type 2126 operator()(_Args&& ...__args) const 2127 { 2128 return __apply_functor(__f_, __bound_args_, __indices(), 2129 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); 2130 } 2131}; 2132 2133template<class _Fp, class ..._BoundArgs> 2134struct __is_bind_expression<__bind<_Fp, _BoundArgs...> > : public true_type {}; 2135 2136template<class _Rp, class _Fp, class ..._BoundArgs> 2137class __bind_r 2138 : public __bind<_Fp, _BoundArgs...> 2139{ 2140 typedef __bind<_Fp, _BoundArgs...> base; 2141 typedef typename base::_Fd _Fd; 2142 typedef typename base::_Td _Td; 2143public: 2144 typedef _Rp result_type; 2145 2146#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2147 2148 _LIBCPP_INLINE_VISIBILITY 2149 __bind_r(const __bind_r& __b) 2150 : base(_VSTD::forward<const base&>(__b)) {} 2151 2152 _LIBCPP_INLINE_VISIBILITY 2153 __bind_r& operator=(const __bind_r& __b) 2154 { 2155 base::operator=(_VSTD::forward<const base&>(__b)); 2156 return *this; 2157 } 2158 2159 _LIBCPP_INLINE_VISIBILITY 2160 __bind_r(__bind_r&& __b) 2161 : base(_VSTD::forward<base>(__b)) {} 2162 2163 _LIBCPP_INLINE_VISIBILITY 2164 __bind_r& operator=(__bind_r&& __b) 2165 { 2166 base::operator=(_VSTD::forward<base>(__b)); 2167 return *this; 2168 } 2169 2170#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2171 2172 template <class _Gp, class ..._BA, 2173 class = typename enable_if 2174 < 2175 is_constructible<_Fd, _Gp>::value && 2176 !is_same<typename remove_reference<_Gp>::type, 2177 __bind_r>::value 2178 >::type> 2179 _LIBCPP_INLINE_VISIBILITY 2180 explicit __bind_r(_Gp&& __f, _BA&& ...__bound_args) 2181 : base(_VSTD::forward<_Gp>(__f), 2182 _VSTD::forward<_BA>(__bound_args)...) {} 2183 2184 template <class ..._Args> 2185 _LIBCPP_INLINE_VISIBILITY 2186 typename enable_if 2187 < 2188 is_convertible<typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type, 2189 result_type>::value || is_void<_Rp>::value, 2190 result_type 2191 >::type 2192 operator()(_Args&& ...__args) 2193 { 2194 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 2195 return _Invoker::__call(static_cast<base&>(*this), _VSTD::forward<_Args>(__args)...); 2196 } 2197 2198 template <class ..._Args> 2199 _LIBCPP_INLINE_VISIBILITY 2200 typename enable_if 2201 < 2202 is_convertible<typename __bind_return<const _Fd, const _Td, tuple<_Args&&...> >::type, 2203 result_type>::value || is_void<_Rp>::value, 2204 result_type 2205 >::type 2206 operator()(_Args&& ...__args) const 2207 { 2208 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 2209 return _Invoker::__call(static_cast<base const&>(*this), _VSTD::forward<_Args>(__args)...); 2210 } 2211}; 2212 2213template<class _Rp, class _Fp, class ..._BoundArgs> 2214struct __is_bind_expression<__bind_r<_Rp, _Fp, _BoundArgs...> > : public true_type {}; 2215 2216template<class _Fp, class ..._BoundArgs> 2217inline _LIBCPP_INLINE_VISIBILITY 2218__bind<_Fp, _BoundArgs...> 2219bind(_Fp&& __f, _BoundArgs&&... __bound_args) 2220{ 2221 typedef __bind<_Fp, _BoundArgs...> type; 2222 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); 2223} 2224 2225template<class _Rp, class _Fp, class ..._BoundArgs> 2226inline _LIBCPP_INLINE_VISIBILITY 2227__bind_r<_Rp, _Fp, _BoundArgs...> 2228bind(_Fp&& __f, _BoundArgs&&... __bound_args) 2229{ 2230 typedef __bind_r<_Rp, _Fp, _BoundArgs...> type; 2231 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); 2232} 2233 2234#endif // _LIBCPP_HAS_NO_VARIADICS 2235 2236template <> 2237struct _LIBCPP_TYPE_VIS_ONLY hash<bool> 2238 : public unary_function<bool, size_t> 2239{ 2240 _LIBCPP_INLINE_VISIBILITY 2241 size_t operator()(bool __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2242}; 2243 2244template <> 2245struct _LIBCPP_TYPE_VIS_ONLY hash<char> 2246 : public unary_function<char, size_t> 2247{ 2248 _LIBCPP_INLINE_VISIBILITY 2249 size_t operator()(char __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2250}; 2251 2252template <> 2253struct _LIBCPP_TYPE_VIS_ONLY hash<signed char> 2254 : public unary_function<signed char, size_t> 2255{ 2256 _LIBCPP_INLINE_VISIBILITY 2257 size_t operator()(signed char __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2258}; 2259 2260template <> 2261struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned char> 2262 : public unary_function<unsigned char, size_t> 2263{ 2264 _LIBCPP_INLINE_VISIBILITY 2265 size_t operator()(unsigned char __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2266}; 2267 2268#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 2269 2270template <> 2271struct _LIBCPP_TYPE_VIS_ONLY hash<char16_t> 2272 : public unary_function<char16_t, size_t> 2273{ 2274 _LIBCPP_INLINE_VISIBILITY 2275 size_t operator()(char16_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2276}; 2277 2278template <> 2279struct _LIBCPP_TYPE_VIS_ONLY hash<char32_t> 2280 : public unary_function<char32_t, size_t> 2281{ 2282 _LIBCPP_INLINE_VISIBILITY 2283 size_t operator()(char32_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2284}; 2285 2286#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 2287 2288template <> 2289struct _LIBCPP_TYPE_VIS_ONLY hash<wchar_t> 2290 : public unary_function<wchar_t, size_t> 2291{ 2292 _LIBCPP_INLINE_VISIBILITY 2293 size_t operator()(wchar_t __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2294}; 2295 2296template <> 2297struct _LIBCPP_TYPE_VIS_ONLY hash<short> 2298 : public unary_function<short, size_t> 2299{ 2300 _LIBCPP_INLINE_VISIBILITY 2301 size_t operator()(short __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2302}; 2303 2304template <> 2305struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned short> 2306 : public unary_function<unsigned short, size_t> 2307{ 2308 _LIBCPP_INLINE_VISIBILITY 2309 size_t operator()(unsigned short __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2310}; 2311 2312template <> 2313struct _LIBCPP_TYPE_VIS_ONLY hash<int> 2314 : public unary_function<int, size_t> 2315{ 2316 _LIBCPP_INLINE_VISIBILITY 2317 size_t operator()(int __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2318}; 2319 2320template <> 2321struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned int> 2322 : public unary_function<unsigned int, size_t> 2323{ 2324 _LIBCPP_INLINE_VISIBILITY 2325 size_t operator()(unsigned int __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2326}; 2327 2328template <> 2329struct _LIBCPP_TYPE_VIS_ONLY hash<long> 2330 : public unary_function<long, size_t> 2331{ 2332 _LIBCPP_INLINE_VISIBILITY 2333 size_t operator()(long __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2334}; 2335 2336template <> 2337struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned long> 2338 : public unary_function<unsigned long, size_t> 2339{ 2340 _LIBCPP_INLINE_VISIBILITY 2341 size_t operator()(unsigned long __v) const _NOEXCEPT {return static_cast<size_t>(__v);} 2342}; 2343 2344template <> 2345struct _LIBCPP_TYPE_VIS_ONLY hash<long long> 2346 : public __scalar_hash<long long> 2347{ 2348}; 2349 2350template <> 2351struct _LIBCPP_TYPE_VIS_ONLY hash<unsigned long long> 2352 : public __scalar_hash<unsigned long long> 2353{ 2354}; 2355 2356template <> 2357struct _LIBCPP_TYPE_VIS_ONLY hash<float> 2358 : public __scalar_hash<float> 2359{ 2360 _LIBCPP_INLINE_VISIBILITY 2361 size_t operator()(float __v) const _NOEXCEPT 2362 { 2363 // -0.0 and 0.0 should return same hash 2364 if (__v == 0) 2365 return 0; 2366 return __scalar_hash<float>::operator()(__v); 2367 } 2368}; 2369 2370template <> 2371struct _LIBCPP_TYPE_VIS_ONLY hash<double> 2372 : public __scalar_hash<double> 2373{ 2374 _LIBCPP_INLINE_VISIBILITY 2375 size_t operator()(double __v) const _NOEXCEPT 2376 { 2377 // -0.0 and 0.0 should return same hash 2378 if (__v == 0) 2379 return 0; 2380 return __scalar_hash<double>::operator()(__v); 2381 } 2382}; 2383 2384template <> 2385struct _LIBCPP_TYPE_VIS_ONLY hash<long double> 2386 : public __scalar_hash<long double> 2387{ 2388 _LIBCPP_INLINE_VISIBILITY 2389 size_t operator()(long double __v) const _NOEXCEPT 2390 { 2391 // -0.0 and 0.0 should return same hash 2392 if (__v == 0) 2393 return 0; 2394#if defined(__i386__) 2395 // Zero out padding bits 2396 union 2397 { 2398 long double __t; 2399 struct 2400 { 2401 size_t __a; 2402 size_t __b; 2403 size_t __c; 2404 size_t __d; 2405 }; 2406 } __u; 2407 __u.__a = 0; 2408 __u.__b = 0; 2409 __u.__c = 0; 2410 __u.__d = 0; 2411 __u.__t = __v; 2412 return __u.__a ^ __u.__b ^ __u.__c ^ __u.__d; 2413#elif defined(__x86_64__) 2414 // Zero out padding bits 2415 union 2416 { 2417 long double __t; 2418 struct 2419 { 2420 size_t __a; 2421 size_t __b; 2422 }; 2423 } __u; 2424 __u.__a = 0; 2425 __u.__b = 0; 2426 __u.__t = __v; 2427 return __u.__a ^ __u.__b; 2428#else 2429 return __scalar_hash<long double>::operator()(__v); 2430#endif 2431 } 2432}; 2433 2434#if _LIBCPP_STD_VER > 11 2435template <class _Tp> 2436struct _LIBCPP_TYPE_VIS_ONLY hash 2437 : public unary_function<_Tp, size_t> 2438{ 2439 static_assert(is_enum<_Tp>::value, "This hash only works for enumeration types"); 2440 2441 _LIBCPP_INLINE_VISIBILITY 2442 size_t operator()(_Tp __v) const _NOEXCEPT 2443 { 2444 typedef typename underlying_type<_Tp>::type type; 2445 return hash<type>{}(static_cast<type>(__v)); 2446 } 2447}; 2448#endif 2449 2450 2451#if _LIBCPP_STD_VER > 14 2452template <class _Fn, class ..._Args> 2453result_of_t<_Fn&&(_Args&&...)> 2454invoke(_Fn&& __f, _Args&&... __args) { 2455 return __invoke(_VSTD::forward<_Fn>(__f), _VSTD::forward<_Args>(__args)...); 2456} 2457#endif 2458 2459// struct hash<T*> in <memory> 2460 2461_LIBCPP_END_NAMESPACE_STD 2462 2463#endif // _LIBCPP_FUNCTIONAL 2464