30 #ifndef _GLIBCXX_CXX_CONFIG_H 31 #define _GLIBCXX_CXX_CONFIG_H 1 34 #define _GLIBCXX_RELEASE 9 37 #define __GLIBCXX__ 20210601 46 # define _GLIBCXX_PURE __attribute__ ((__pure__)) 49 #ifndef _GLIBCXX_CONST 50 # define _GLIBCXX_CONST __attribute__ ((__const__)) 53 #ifndef _GLIBCXX_NORETURN 54 # define _GLIBCXX_NORETURN __attribute__ ((__noreturn__)) 58 #ifndef _GLIBCXX_NOTHROW 60 # define _GLIBCXX_NOTHROW __attribute__((__nothrow__)) 67 # define _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY 1 69 #if _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY 70 # define _GLIBCXX_VISIBILITY(V) __attribute__ ((__visibility__ (#V))) 74 # define _GLIBCXX_VISIBILITY(V) _GLIBCXX_PSEUDO_VISIBILITY(V) 82 #ifndef _GLIBCXX_USE_DEPRECATED 83 # define _GLIBCXX_USE_DEPRECATED 1 86 #if defined(__DEPRECATED) && (__cplusplus >= 201103L) 87 # define _GLIBCXX_DEPRECATED __attribute__ ((__deprecated__)) 88 # define _GLIBCXX_DEPRECATED_SUGGEST(ALT) \ 89 __attribute__ ((__deprecated__ ("use '" ALT "' instead"))) 91 # define _GLIBCXX_DEPRECATED 92 # define _GLIBCXX_DEPRECATED_SUGGEST(ALT) 95 #if defined(__DEPRECATED) && (__cplusplus >= 201703L) 96 # define _GLIBCXX17_DEPRECATED [[__deprecated__]] 98 # define _GLIBCXX17_DEPRECATED 102 #ifndef _GLIBCXX_ABI_TAG_CXX11 103 # define _GLIBCXX_ABI_TAG_CXX11 __attribute ((__abi_tag__ ("cxx11"))) 107 #if __cplusplus >= 201703L 108 # define _GLIBCXX_NODISCARD [[__nodiscard__]] 110 # define _GLIBCXX_NODISCARD 118 #ifndef _GLIBCXX_CONSTEXPR 119 # if __cplusplus >= 201103L 120 # define _GLIBCXX_CONSTEXPR constexpr 121 # define _GLIBCXX_USE_CONSTEXPR constexpr 123 # define _GLIBCXX_CONSTEXPR 124 # define _GLIBCXX_USE_CONSTEXPR const 128 #ifndef _GLIBCXX14_CONSTEXPR 129 # if __cplusplus >= 201402L 130 # define _GLIBCXX14_CONSTEXPR constexpr 132 # define _GLIBCXX14_CONSTEXPR 136 #ifndef _GLIBCXX17_CONSTEXPR 137 # if __cplusplus >= 201703L 138 # define _GLIBCXX17_CONSTEXPR constexpr 140 # define _GLIBCXX17_CONSTEXPR 144 #ifndef _GLIBCXX20_CONSTEXPR 145 # if __cplusplus > 201703L 146 # define _GLIBCXX20_CONSTEXPR constexpr 148 # define _GLIBCXX20_CONSTEXPR 152 #ifndef _GLIBCXX17_INLINE 153 # if __cplusplus >= 201703L 154 # define _GLIBCXX17_INLINE inline 156 # define _GLIBCXX17_INLINE 161 #ifndef _GLIBCXX_NOEXCEPT 162 # if __cplusplus >= 201103L 163 # define _GLIBCXX_NOEXCEPT noexcept 164 # define _GLIBCXX_NOEXCEPT_IF(_COND) noexcept(_COND) 165 # define _GLIBCXX_USE_NOEXCEPT noexcept 166 # define _GLIBCXX_THROW(_EXC) 168 # define _GLIBCXX_NOEXCEPT 169 # define _GLIBCXX_NOEXCEPT_IF(_COND) 170 # define _GLIBCXX_USE_NOEXCEPT throw() 171 # define _GLIBCXX_THROW(_EXC) throw(_EXC) 175 #ifndef _GLIBCXX_NOTHROW 176 # define _GLIBCXX_NOTHROW _GLIBCXX_USE_NOEXCEPT 179 #ifndef _GLIBCXX_THROW_OR_ABORT 180 # if __cpp_exceptions 181 # define _GLIBCXX_THROW_OR_ABORT(_EXC) (throw (_EXC)) 183 # define _GLIBCXX_THROW_OR_ABORT(_EXC) (__builtin_abort()) 187 #if __cpp_noexcept_function_type 188 #define _GLIBCXX_NOEXCEPT_PARM , bool _NE 189 #define _GLIBCXX_NOEXCEPT_QUAL noexcept (_NE) 191 #define _GLIBCXX_NOEXCEPT_PARM 192 #define _GLIBCXX_NOEXCEPT_QUAL 205 # define _GLIBCXX_EXTERN_TEMPLATE 1 258 typedef __SIZE_TYPE__ size_t;
259 typedef __PTRDIFF_TYPE__ ptrdiff_t;
261 #if __cplusplus >= 201103L 262 typedef decltype(
nullptr) nullptr_t;
266 # define _GLIBCXX_USE_DUAL_ABI 1 268 #if ! _GLIBCXX_USE_DUAL_ABI 270 # undef _GLIBCXX_USE_CXX11_ABI 273 #ifndef _GLIBCXX_USE_CXX11_ABI 274 # define _GLIBCXX_USE_CXX11_ABI 1 277 #if _GLIBCXX_USE_CXX11_ABI 280 inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
284 inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
286 # define _GLIBCXX_NAMESPACE_CXX11 __cxx11:: 287 # define _GLIBCXX_BEGIN_NAMESPACE_CXX11 namespace __cxx11 { 288 # define _GLIBCXX_END_NAMESPACE_CXX11 } 289 # define _GLIBCXX_DEFAULT_ABI_TAG _GLIBCXX_ABI_TAG_CXX11 291 # define _GLIBCXX_NAMESPACE_CXX11 292 # define _GLIBCXX_BEGIN_NAMESPACE_CXX11 293 # define _GLIBCXX_END_NAMESPACE_CXX11 294 # define _GLIBCXX_DEFAULT_ABI_TAG 298 # define _GLIBCXX_INLINE_VERSION 0 301 #if _GLIBCXX_INLINE_VERSION 302 # define _GLIBCXX_BEGIN_NAMESPACE_VERSION namespace __8 { 303 # define _GLIBCXX_END_NAMESPACE_VERSION } 307 inline _GLIBCXX_BEGIN_NAMESPACE_VERSION
308 #if __cplusplus >= 201402L 309 inline namespace literals {
310 inline namespace chrono_literals { }
311 inline namespace complex_literals { }
312 inline namespace string_literals { }
313 #if __cplusplus > 201402L 314 inline namespace string_view_literals { }
318 _GLIBCXX_END_NAMESPACE_VERSION
323 inline _GLIBCXX_BEGIN_NAMESPACE_VERSION
324 _GLIBCXX_END_NAMESPACE_VERSION
328 # define _GLIBCXX_BEGIN_NAMESPACE_VERSION 329 # define _GLIBCXX_END_NAMESPACE_VERSION 333 #if defined(_GLIBCXX_DEBUG) || defined(_GLIBCXX_PARALLEL) \ 334 || defined(_GLIBCXX_PROFILE) 337 _GLIBCXX_BEGIN_NAMESPACE_VERSION
342 # if _GLIBCXX_USE_CXX11_ABI 343 inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
347 _GLIBCXX_END_NAMESPACE_VERSION
350 # ifdef _GLIBCXX_DEBUG 351 inline namespace __debug { }
355 # ifdef _GLIBCXX_PARALLEL 356 inline namespace __parallel { }
360 # ifdef _GLIBCXX_PROFILE 361 inline namespace __profile { }
366 # if defined(_GLIBCXX_DEBUG) && defined(_GLIBCXX_PARALLEL) 367 # error illegal use of multiple inlined namespaces 369 # if defined(_GLIBCXX_PROFILE) && defined(_GLIBCXX_DEBUG) 370 # error illegal use of multiple inlined namespaces 372 # if defined(_GLIBCXX_PROFILE) && defined(_GLIBCXX_PARALLEL) 373 # error illegal use of multiple inlined namespaces 377 # if __NO_INLINE__ && !__GXX_WEAK__ 378 # warning currently using inlined namespace mode which may fail \ 379 without inlining due to lack of weak symbols 393 #if defined(_GLIBCXX_DEBUG) || defined(_GLIBCXX_PROFILE) 394 # define _GLIBCXX_STD_C __cxx1998 395 # define _GLIBCXX_BEGIN_NAMESPACE_CONTAINER \ 396 namespace _GLIBCXX_STD_C { 397 # define _GLIBCXX_END_NAMESPACE_CONTAINER } 399 # define _GLIBCXX_STD_C std 400 # define _GLIBCXX_BEGIN_NAMESPACE_CONTAINER 401 # define _GLIBCXX_END_NAMESPACE_CONTAINER 404 #ifdef _GLIBCXX_PARALLEL 405 # define _GLIBCXX_STD_A __cxx1998 406 # define _GLIBCXX_BEGIN_NAMESPACE_ALGO \ 407 namespace _GLIBCXX_STD_A { 408 # define _GLIBCXX_END_NAMESPACE_ALGO } 410 # define _GLIBCXX_STD_A std 411 # define _GLIBCXX_BEGIN_NAMESPACE_ALGO 412 # define _GLIBCXX_END_NAMESPACE_ALGO 417 #undef _GLIBCXX_LONG_DOUBLE_COMPAT 420 #if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__ 423 inline namespace __gnu_cxx_ldbl128 { }
425 # define _GLIBCXX_NAMESPACE_LDBL __gnu_cxx_ldbl128:: 426 # define _GLIBCXX_BEGIN_NAMESPACE_LDBL namespace __gnu_cxx_ldbl128 { 427 # define _GLIBCXX_END_NAMESPACE_LDBL } 429 # define _GLIBCXX_NAMESPACE_LDBL 430 # define _GLIBCXX_BEGIN_NAMESPACE_LDBL 431 # define _GLIBCXX_END_NAMESPACE_LDBL 433 #if _GLIBCXX_USE_CXX11_ABI 434 # define _GLIBCXX_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_NAMESPACE_CXX11 435 # define _GLIBCXX_BEGIN_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_BEGIN_NAMESPACE_CXX11 436 # define _GLIBCXX_END_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_END_NAMESPACE_CXX11 438 # define _GLIBCXX_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_NAMESPACE_LDBL 439 # define _GLIBCXX_BEGIN_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_BEGIN_NAMESPACE_LDBL 440 # define _GLIBCXX_END_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_END_NAMESPACE_LDBL 444 #if defined(_GLIBCXX_DEBUG) && !defined(_GLIBCXX_ASSERTIONS) 445 # define _GLIBCXX_ASSERTIONS 1 449 #ifdef _GLIBCXX_ASSERTIONS 450 # undef _GLIBCXX_EXTERN_TEMPLATE 451 # define _GLIBCXX_EXTERN_TEMPLATE -1 455 #if defined(_GLIBCXX_ASSERTIONS) \ 456 || defined(_GLIBCXX_PARALLEL) || defined(_GLIBCXX_PARALLEL_ASSERTIONS) 461 extern "C++" inline void 462 __replacement_assert(
const char* __file,
int __line,
463 const char* __function,
const char* __condition)
465 __builtin_printf(
"%s:%d: %s: Assertion '%s' failed.\n", __file, __line,
466 __function, __condition);
470 #define __glibcxx_assert_impl(_Condition) \ 473 if (! (_Condition)) \ 474 std::__replacement_assert(__FILE__, __LINE__, __PRETTY_FUNCTION__, \ 479 #if defined(_GLIBCXX_ASSERTIONS) 480 # define __glibcxx_assert(_Condition) __glibcxx_assert_impl(_Condition) 482 # define __glibcxx_assert(_Condition) 506 #ifndef _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE 507 # define _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(A) 509 #ifndef _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER 510 # define _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(A) 514 # define _GLIBCXX_BEGIN_EXTERN_C extern "C" { 515 # define _GLIBCXX_END_EXTERN_C } 517 # define _GLIBCXX_USE_ALLOCATOR_NEW 1 519 #else // !__cplusplus 520 # define _GLIBCXX_BEGIN_EXTERN_C 521 # define _GLIBCXX_END_EXTERN_C 535 #ifndef _GLIBCXX_PSEUDO_VISIBILITY 536 # define _GLIBCXX_PSEUDO_VISIBILITY(V) 542 #ifndef _GLIBCXX_WEAK_DEFINITION 543 # define _GLIBCXX_WEAK_DEFINITION 550 #ifndef _GLIBCXX_USE_WEAK_REF 551 # define _GLIBCXX_USE_WEAK_REF __GXX_WEAK__ 557 #if __cplusplus >= 201103L && _GLIBCXX_USE_CXX11_ABI \ 558 && _GLIBCXX_USE_DUAL_ABI && __cpp_transactional_memory >= 201500L \ 559 && !_GLIBCXX_FULLY_DYNAMIC_STRING && _GLIBCXX_USE_WEAK_REF \ 560 && _GLIBCXX_USE_ALLOCATOR_NEW 561 #define _GLIBCXX_TXN_SAFE transaction_safe 562 #define _GLIBCXX_TXN_SAFE_DYN transaction_safe_dynamic 564 #define _GLIBCXX_TXN_SAFE 565 #define _GLIBCXX_TXN_SAFE_DYN 568 #if __cplusplus > 201402L 570 # define _GLIBCXX_USE_STD_SPEC_FUNCS 1 571 #elif __cplusplus >= 201103L && __STDCPP_WANT_MATH_SPEC_FUNCS__ != 0 573 # define _GLIBCXX_USE_STD_SPEC_FUNCS 1 581 # define _GLIBCXX_FAST_MATH 1 583 # define _GLIBCXX_FAST_MATH 0 590 #define __N(msgid) (msgid) 598 #if __cplusplus >= 201103L 599 # ifndef _GLIBCXX_USE_C99_MATH 600 # define _GLIBCXX_USE_C99_MATH _GLIBCXX11_USE_C99_MATH 602 # ifndef _GLIBCXX_USE_C99_COMPLEX 603 # define _GLIBCXX_USE_C99_COMPLEX _GLIBCXX11_USE_C99_COMPLEX 605 # ifndef _GLIBCXX_USE_C99_STDIO 606 # define _GLIBCXX_USE_C99_STDIO _GLIBCXX11_USE_C99_STDIO 608 # ifndef _GLIBCXX_USE_C99_STDLIB 609 # define _GLIBCXX_USE_C99_STDLIB _GLIBCXX11_USE_C99_STDLIB 611 # ifndef _GLIBCXX_USE_C99_WCHAR 612 # define _GLIBCXX_USE_C99_WCHAR _GLIBCXX11_USE_C99_WCHAR 615 # ifndef _GLIBCXX_USE_C99_MATH 616 # define _GLIBCXX_USE_C99_MATH _GLIBCXX98_USE_C99_MATH 618 # ifndef _GLIBCXX_USE_C99_COMPLEX 619 # define _GLIBCXX_USE_C99_COMPLEX _GLIBCXX98_USE_C99_COMPLEX 621 # ifndef _GLIBCXX_USE_C99_STDIO 622 # define _GLIBCXX_USE_C99_STDIO _GLIBCXX98_USE_C99_STDIO 624 # ifndef _GLIBCXX_USE_C99_STDLIB 625 # define _GLIBCXX_USE_C99_STDLIB _GLIBCXX98_USE_C99_STDLIB 627 # ifndef _GLIBCXX_USE_C99_WCHAR 628 # define _GLIBCXX_USE_C99_WCHAR _GLIBCXX98_USE_C99_WCHAR 634 #ifndef _GLIBCXX_USE_CHAR8_T 635 # ifdef __cpp_char8_t 636 # define _GLIBCXX_USE_CHAR8_T 1 639 #ifdef _GLIBCXX_USE_CHAR8_T 640 # define __cpp_lib_char8_t 201811L 644 #if defined(__FLOAT128__) || defined(__SIZEOF_FLOAT128__) 645 #define _GLIBCXX_USE_FLOAT128 1 650 # define _GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP 1 651 # define _GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE 1 652 # define _GLIBCXX_HAVE_BUILTIN_LAUNDER 1 654 # define _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED 1 656 #elif defined(__is_identifier) && defined(__has_builtin) 658 # if ! __is_identifier(__has_unique_object_representations) 659 # define _GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP 1 661 # if ! __is_identifier(__is_aggregate) 662 # define _GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE 1 664 # if __has_builtin(__builtin_launder) 665 # define _GLIBCXX_HAVE_BUILTIN_LAUNDER 1 667 # if __has_builtin(__builtin_is_constant_evaluated) 668 # define _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED 1 674 #if __cplusplus >= 201703L 676 #if __has_include(<pstl/pstl_config.h>) 683 # ifndef _GLIBCXX_USE_TBB_PAR_BACKEND 684 # define _GLIBCXX_USE_TBB_PAR_BACKEND __has_include(<tbb/tbb.h>) 687 # if _GLIBCXX_USE_TBB_PAR_BACKEND 688 # define __PSTL_USE_PAR_POLICIES 1 691 # define __PSTL_ASSERT(_Condition) __glibcxx_assert(_Condition) 692 # define __PSTL_ASSERT_MSG(_Condition, _Message) __glibcxx_assert(_Condition) 694 #include <pstl/pstl_config.h> 695 #endif // __has_include 703 #define _GLIBCXX_HAVE_ACOSF 1 706 #define _GLIBCXX_HAVE_ACOSL 1 709 #define _GLIBCXX_HAVE_ALIGNED_ALLOC 1 712 #define _GLIBCXX_HAVE_ARPA_INET_H 1 715 #define _GLIBCXX_HAVE_ASINF 1 718 #define _GLIBCXX_HAVE_ASINL 1 721 #define _GLIBCXX_HAVE_AS_SYMVER_DIRECTIVE 1 724 #define _GLIBCXX_HAVE_ATAN2F 1 727 #define _GLIBCXX_HAVE_ATAN2L 1 730 #define _GLIBCXX_HAVE_ATANF 1 733 #define _GLIBCXX_HAVE_ATANL 1 736 #define _GLIBCXX_HAVE_ATOMIC_LOCK_POLICY 1 739 #define _GLIBCXX_HAVE_AT_QUICK_EXIT 1 745 #define _GLIBCXX_HAVE_CEILF 1 748 #define _GLIBCXX_HAVE_CEILL 1 751 #define _GLIBCXX_HAVE_COMPLEX_H 1 754 #define _GLIBCXX_HAVE_COSF 1 757 #define _GLIBCXX_HAVE_COSHF 1 760 #define _GLIBCXX_HAVE_COSHL 1 763 #define _GLIBCXX_HAVE_COSL 1 766 #define _GLIBCXX_HAVE_DIRENT_H 1 769 #define _GLIBCXX_HAVE_DLFCN_H 1 772 #define _GLIBCXX_HAVE_EBADMSG 1 775 #define _GLIBCXX_HAVE_ECANCELED 1 778 #define _GLIBCXX_HAVE_ECHILD 1 781 #define _GLIBCXX_HAVE_EIDRM 1 784 #define _GLIBCXX_HAVE_ENDIAN_H 1 787 #define _GLIBCXX_HAVE_ENODATA 1 790 #define _GLIBCXX_HAVE_ENOLINK 1 793 #define _GLIBCXX_HAVE_ENOSPC 1 796 #define _GLIBCXX_HAVE_ENOSR 1 799 #define _GLIBCXX_HAVE_ENOSTR 1 802 #define _GLIBCXX_HAVE_ENOTRECOVERABLE 1 805 #define _GLIBCXX_HAVE_ENOTSUP 1 808 #define _GLIBCXX_HAVE_EOVERFLOW 1 811 #define _GLIBCXX_HAVE_EOWNERDEAD 1 814 #define _GLIBCXX_HAVE_EPERM 1 817 #define _GLIBCXX_HAVE_EPROTO 1 820 #define _GLIBCXX_HAVE_ETIME 1 823 #define _GLIBCXX_HAVE_ETIMEDOUT 1 826 #define _GLIBCXX_HAVE_ETXTBSY 1 829 #define _GLIBCXX_HAVE_EWOULDBLOCK 1 832 #define _GLIBCXX_HAVE_EXCEPTION_PTR_SINCE_GCC46 1 835 #define _GLIBCXX_HAVE_EXECINFO_H 1 838 #define _GLIBCXX_HAVE_EXPF 1 841 #define _GLIBCXX_HAVE_EXPL 1 844 #define _GLIBCXX_HAVE_FABSF 1 847 #define _GLIBCXX_HAVE_FABSL 1 850 #define _GLIBCXX_HAVE_FCNTL_H 1 853 #define _GLIBCXX_HAVE_FENV_H 1 856 #define _GLIBCXX_HAVE_FINITE 1 859 #define _GLIBCXX_HAVE_FINITEF 1 862 #define _GLIBCXX_HAVE_FINITEL 1 865 #define _GLIBCXX_HAVE_FLOAT_H 1 868 #define _GLIBCXX_HAVE_FLOORF 1 871 #define _GLIBCXX_HAVE_FLOORL 1 874 #define _GLIBCXX_HAVE_FMODF 1 877 #define _GLIBCXX_HAVE_FMODL 1 886 #define _GLIBCXX_HAVE_FREXPF 1 889 #define _GLIBCXX_HAVE_FREXPL 1 892 #define _GLIBCXX_HAVE_GETIPINFO 1 895 #define _GLIBCXX_HAVE_GETS 1 898 #define _GLIBCXX_HAVE_HYPOT 1 901 #define _GLIBCXX_HAVE_HYPOTF 1 904 #define _GLIBCXX_HAVE_HYPOTL 1 907 #define _GLIBCXX_HAVE_ICONV 1 913 #define _GLIBCXX_HAVE_INT64_T 1 916 #define _GLIBCXX_HAVE_INT64_T_LONG 1 922 #define _GLIBCXX_HAVE_INTTYPES_H 1 928 #define _GLIBCXX_HAVE_ISINFF 1 931 #define _GLIBCXX_HAVE_ISINFL 1 937 #define _GLIBCXX_HAVE_ISNANF 1 940 #define _GLIBCXX_HAVE_ISNANL 1 943 #define _GLIBCXX_HAVE_ISWBLANK 1 946 #define _GLIBCXX_HAVE_LC_MESSAGES 1 949 #define _GLIBCXX_HAVE_LDEXPF 1 952 #define _GLIBCXX_HAVE_LDEXPL 1 955 #define _GLIBCXX_HAVE_LIBINTL_H 1 958 #define _GLIBCXX_HAVE_LIMIT_AS 1 961 #define _GLIBCXX_HAVE_LIMIT_DATA 1 964 #define _GLIBCXX_HAVE_LIMIT_FSIZE 1 967 #define _GLIBCXX_HAVE_LIMIT_RSS 1 970 #define _GLIBCXX_HAVE_LIMIT_VMEM 0 973 #define _GLIBCXX_HAVE_LINK 1 976 #define _GLIBCXX_HAVE_LINUX_FUTEX 1 979 #define _GLIBCXX_HAVE_LINUX_RANDOM_H 1 982 #define _GLIBCXX_HAVE_LINUX_TYPES_H 1 985 #define _GLIBCXX_HAVE_LOCALE_H 1 988 #define _GLIBCXX_HAVE_LOG10F 1 991 #define _GLIBCXX_HAVE_LOG10L 1 994 #define _GLIBCXX_HAVE_LOGF 1 997 #define _GLIBCXX_HAVE_LOGL 1 1006 #define _GLIBCXX_HAVE_MBSTATE_T 1 1009 #define _GLIBCXX_HAVE_MEMALIGN 1 1012 #define _GLIBCXX_HAVE_MEMORY_H 1 1015 #define _GLIBCXX_HAVE_MODF 1 1018 #define _GLIBCXX_HAVE_MODFF 1 1021 #define _GLIBCXX_HAVE_MODFL 1 1027 #define _GLIBCXX_HAVE_NETDB_H 1 1030 #define _GLIBCXX_HAVE_NETINET_IN_H 1 1033 #define _GLIBCXX_HAVE_NETINET_TCP_H 1 1042 #define _GLIBCXX_HAVE_POLL 1 1045 #define _GLIBCXX_HAVE_POLL_H 1 1048 #define _GLIBCXX_HAVE_POSIX_MEMALIGN 1 1051 #define _GLIBCXX_HAVE_POWF 1 1054 #define _GLIBCXX_HAVE_POWL 1 1060 #define _GLIBCXX_HAVE_QUICK_EXIT 1 1063 #define _GLIBCXX_HAVE_READLINK 1 1066 #define _GLIBCXX_HAVE_SETENV 1 1069 #define _GLIBCXX_HAVE_SINCOS 1 1072 #define _GLIBCXX_HAVE_SINCOSF 1 1075 #define _GLIBCXX_HAVE_SINCOSL 1 1078 #define _GLIBCXX_HAVE_SINF 1 1081 #define _GLIBCXX_HAVE_SINHF 1 1084 #define _GLIBCXX_HAVE_SINHL 1 1087 #define _GLIBCXX_HAVE_SINL 1 1093 #define _GLIBCXX_HAVE_SOCKATMARK 1 1096 #define _GLIBCXX_HAVE_SQRTF 1 1099 #define _GLIBCXX_HAVE_SQRTL 1 1102 #define _GLIBCXX_HAVE_STDALIGN_H 1 1105 #define _GLIBCXX_HAVE_STDBOOL_H 1 1108 #define _GLIBCXX_HAVE_STDINT_H 1 1111 #define _GLIBCXX_HAVE_STDLIB_H 1 1114 #define _GLIBCXX_HAVE_STRERROR_L 1 1117 #define _GLIBCXX_HAVE_STRERROR_R 1 1120 #define _GLIBCXX_HAVE_STRINGS_H 1 1123 #define _GLIBCXX_HAVE_STRING_H 1 1126 #define _GLIBCXX_HAVE_STRTOF 1 1129 #define _GLIBCXX_HAVE_STRTOLD 1 1132 #define _GLIBCXX_HAVE_STRUCT_DIRENT_D_TYPE 1 1135 #define _GLIBCXX_HAVE_STRXFRM_L 1 1138 #define _GLIBCXX_HAVE_SYMLINK 1 1142 #define _GLIBCXX_HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT 1 1148 #define _GLIBCXX_HAVE_SYS_IOCTL_H 1 1151 #define _GLIBCXX_HAVE_SYS_IPC_H 1 1160 #define _GLIBCXX_HAVE_SYS_PARAM_H 1 1163 #define _GLIBCXX_HAVE_SYS_RESOURCE_H 1 1166 #define _GLIBCXX_HAVE_SYS_SDT_H 1 1169 #define _GLIBCXX_HAVE_SYS_SEM_H 1 1172 #define _GLIBCXX_HAVE_SYS_SOCKET_H 1 1175 #define _GLIBCXX_HAVE_SYS_STATVFS_H 1 1178 #define _GLIBCXX_HAVE_SYS_STAT_H 1 1181 #define _GLIBCXX_HAVE_SYS_SYSINFO_H 1 1184 #define _GLIBCXX_HAVE_SYS_TIME_H 1 1187 #define _GLIBCXX_HAVE_SYS_TYPES_H 1 1190 #define _GLIBCXX_HAVE_SYS_UIO_H 1 1196 #define _GLIBCXX_HAVE_S_ISREG 1 1199 #define _GLIBCXX_HAVE_TANF 1 1202 #define _GLIBCXX_HAVE_TANHF 1 1205 #define _GLIBCXX_HAVE_TANHL 1 1208 #define _GLIBCXX_HAVE_TANL 1 1211 #define _GLIBCXX_HAVE_TGMATH_H 1 1214 #define _GLIBCXX_HAVE_TIMESPEC_GET 1 1217 #define _GLIBCXX_HAVE_TLS 1 1220 #define _GLIBCXX_HAVE_TRUNCATE 1 1223 #define _GLIBCXX_HAVE_UCHAR_H 1 1226 #define _GLIBCXX_HAVE_UNISTD_H 1 1232 #define _GLIBCXX_HAVE_UTIME_H 1 1235 #define _GLIBCXX_HAVE_VFWSCANF 1 1238 #define _GLIBCXX_HAVE_VSWSCANF 1 1241 #define _GLIBCXX_HAVE_VWSCANF 1 1244 #define _GLIBCXX_HAVE_WCHAR_H 1 1247 #define _GLIBCXX_HAVE_WCSTOF 1 1250 #define _GLIBCXX_HAVE_WCTYPE_H 1 1256 #define _GLIBCXX_HAVE_WRITEV 1 1454 #define _GLIBCXX_HAVE___CXA_THREAD_ATEXIT_IMPL 1 1457 #define _GLIBCXX_ICONV_CONST 1461 #define LT_OBJDIR ".libs/" 1467 #define _GLIBCXX_PACKAGE_BUGREPORT "" 1470 #define _GLIBCXX_PACKAGE_NAME "package-unused" 1473 #define _GLIBCXX_PACKAGE_STRING "package-unused version-unused" 1476 #define _GLIBCXX_PACKAGE_TARNAME "libstdc++" 1479 #define _GLIBCXX_PACKAGE_URL "" 1482 #define _GLIBCXX_PACKAGE__GLIBCXX_VERSION "version-unused" 1500 #define STDC_HEADERS 1 1506 #ifndef _GLIBCXX_DARWIN_USE_64_BIT_INODE 1507 # define _GLIBCXX_DARWIN_USE_64_BIT_INODE 1 1516 #define _GLIBCXX11_USE_C99_COMPLEX 1 1520 #define _GLIBCXX11_USE_C99_MATH 1 1524 #define _GLIBCXX11_USE_C99_STDIO 1 1528 #define _GLIBCXX11_USE_C99_STDLIB 1 1532 #define _GLIBCXX11_USE_C99_WCHAR 1 1537 #define _GLIBCXX98_USE_C99_COMPLEX 1 1541 #define _GLIBCXX98_USE_C99_MATH 1 1545 #define _GLIBCXX98_USE_C99_STDIO 1 1549 #define _GLIBCXX98_USE_C99_STDLIB 1 1553 #define _GLIBCXX98_USE_C99_WCHAR 1 1556 #define _GLIBCXX_ATOMIC_BUILTINS 1 1563 #define _GLIBCXX_FULLY_DYNAMIC_STRING 0 1566 #define _GLIBCXX_HAS_GTHREADS 1 1569 #define _GLIBCXX_HOSTED 1 1574 #define _GLIBCXX_MANGLE_SIZE_T m 1583 #define _GLIBCXX_RES_LIMITS 1 1589 #define _GLIBCXX_STDIO_EOF -1 1592 #define _GLIBCXX_STDIO_SEEK_CUR 1 1595 #define _GLIBCXX_STDIO_SEEK_END 2 1598 #define _GLIBCXX_SYMVER 1 1604 #define _GLIBCXX_SYMVER_GNU 1 1614 #define _GLIBCXX_USE_C11_UCHAR_CXX11 1 1618 #define _GLIBCXX_USE_C99 1 1623 #define _GLIBCXX_USE_C99_COMPLEX_TR1 1 1627 #define _GLIBCXX_USE_C99_CTYPE_TR1 1 1631 #define _GLIBCXX_USE_C99_FENV_TR1 1 1635 #define _GLIBCXX_USE_C99_INTTYPES_TR1 1 1639 #define _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1 1 1643 #define _GLIBCXX_USE_C99_MATH_TR1 1 1647 #define _GLIBCXX_USE_C99_STDINT_TR1 1 1654 #define _GLIBCXX_USE_CLOCK_MONOTONIC 1 1657 #define _GLIBCXX_USE_CLOCK_REALTIME 1 1661 #define _GLIBCXX_USE_DECIMAL_FLOAT 1 1665 #define _GLIBCXX_USE_DEV_RANDOM 1 1668 #define _GLIBCXX_USE_FCHMOD 1 1671 #define _GLIBCXX_USE_FCHMODAT 1 1674 #define _GLIBCXX_USE_GETTIMEOFDAY 1 1677 #define _GLIBCXX_USE_GET_NPROCS 1 1680 #define _GLIBCXX_USE_INT128 1 1683 #define _GLIBCXX_USE_LFS 1 1686 #define _GLIBCXX_USE_LONG_LONG 1 1689 #define _GLIBCXX_USE_LSTAT 1 1692 #define _GLIBCXX_USE_NANOSLEEP 1 1695 #define _GLIBCXX_USE_NLS 1 1701 #define _GLIBCXX_USE_PTHREAD_RWLOCK_T 1 1705 #define _GLIBCXX_USE_RANDOM_TR1 1 1708 #define _GLIBCXX_USE_REALPATH 1 1711 #define _GLIBCXX_USE_SCHED_YIELD 1 1714 #define _GLIBCXX_USE_SC_NPROCESSORS_ONLN 1 1720 #define _GLIBCXX_USE_SENDFILE 1 1723 #define _GLIBCXX_USE_ST_MTIM 1 1729 #define _GLIBCXX_USE_TMPNAM 1 1732 #define _GLIBCXX_USE_UTIME 1 1736 #define _GLIBCXX_USE_UTIMENSAT 1 1739 #define _GLIBCXX_USE_WCHAR_T 1 1742 #define _GLIBCXX_VERBOSE 1 1745 #define _GLIBCXX_X86_RDRAND 1 1748 #define _GTHREAD_USE_MUTEX_TIMEDLOCK 1 1754 #if __cplusplus >= 201103L 1759 #if __cplusplus >= 201103L 1763 #if defined (_GLIBCXX_HAVE__ACOSF) && ! defined (_GLIBCXX_HAVE_ACOSF) 1764 # define _GLIBCXX_HAVE_ACOSF 1 1765 # define acosf _acosf 1768 #if defined (_GLIBCXX_HAVE__ACOSL) && ! defined (_GLIBCXX_HAVE_ACOSL) 1769 # define _GLIBCXX_HAVE_ACOSL 1 1770 # define acosl _acosl 1773 #if defined (_GLIBCXX_HAVE__ASINF) && ! defined (_GLIBCXX_HAVE_ASINF) 1774 # define _GLIBCXX_HAVE_ASINF 1 1775 # define asinf _asinf 1778 #if defined (_GLIBCXX_HAVE__ASINL) && ! defined (_GLIBCXX_HAVE_ASINL) 1779 # define _GLIBCXX_HAVE_ASINL 1 1780 # define asinl _asinl 1783 #if defined (_GLIBCXX_HAVE__ATAN2F) && ! defined (_GLIBCXX_HAVE_ATAN2F) 1784 # define _GLIBCXX_HAVE_ATAN2F 1 1785 # define atan2f _atan2f 1788 #if defined (_GLIBCXX_HAVE__ATAN2L) && ! defined (_GLIBCXX_HAVE_ATAN2L) 1789 # define _GLIBCXX_HAVE_ATAN2L 1 1790 # define atan2l _atan2l 1793 #if defined (_GLIBCXX_HAVE__ATANF) && ! defined (_GLIBCXX_HAVE_ATANF) 1794 # define _GLIBCXX_HAVE_ATANF 1 1795 # define atanf _atanf 1798 #if defined (_GLIBCXX_HAVE__ATANL) && ! defined (_GLIBCXX_HAVE_ATANL) 1799 # define _GLIBCXX_HAVE_ATANL 1 1800 # define atanl _atanl 1803 #if defined (_GLIBCXX_HAVE__CEILF) && ! defined (_GLIBCXX_HAVE_CEILF) 1804 # define _GLIBCXX_HAVE_CEILF 1 1805 # define ceilf _ceilf 1808 #if defined (_GLIBCXX_HAVE__CEILL) && ! defined (_GLIBCXX_HAVE_CEILL) 1809 # define _GLIBCXX_HAVE_CEILL 1 1810 # define ceill _ceill 1813 #if defined (_GLIBCXX_HAVE__COSF) && ! defined (_GLIBCXX_HAVE_COSF) 1814 # define _GLIBCXX_HAVE_COSF 1 1818 #if defined (_GLIBCXX_HAVE__COSHF) && ! defined (_GLIBCXX_HAVE_COSHF) 1819 # define _GLIBCXX_HAVE_COSHF 1 1820 # define coshf _coshf 1823 #if defined (_GLIBCXX_HAVE__COSHL) && ! defined (_GLIBCXX_HAVE_COSHL) 1824 # define _GLIBCXX_HAVE_COSHL 1 1825 # define coshl _coshl 1828 #if defined (_GLIBCXX_HAVE__COSL) && ! defined (_GLIBCXX_HAVE_COSL) 1829 # define _GLIBCXX_HAVE_COSL 1 1833 #if defined (_GLIBCXX_HAVE__EXPF) && ! defined (_GLIBCXX_HAVE_EXPF) 1834 # define _GLIBCXX_HAVE_EXPF 1 1838 #if defined (_GLIBCXX_HAVE__EXPL) && ! defined (_GLIBCXX_HAVE_EXPL) 1839 # define _GLIBCXX_HAVE_EXPL 1 1843 #if defined (_GLIBCXX_HAVE__FABSF) && ! defined (_GLIBCXX_HAVE_FABSF) 1844 # define _GLIBCXX_HAVE_FABSF 1 1845 # define fabsf _fabsf 1848 #if defined (_GLIBCXX_HAVE__FABSL) && ! defined (_GLIBCXX_HAVE_FABSL) 1849 # define _GLIBCXX_HAVE_FABSL 1 1850 # define fabsl _fabsl 1853 #if defined (_GLIBCXX_HAVE__FINITE) && ! defined (_GLIBCXX_HAVE_FINITE) 1854 # define _GLIBCXX_HAVE_FINITE 1 1855 # define finite _finite 1858 #if defined (_GLIBCXX_HAVE__FINITEF) && ! defined (_GLIBCXX_HAVE_FINITEF) 1859 # define _GLIBCXX_HAVE_FINITEF 1 1860 # define finitef _finitef 1863 #if defined (_GLIBCXX_HAVE__FINITEL) && ! defined (_GLIBCXX_HAVE_FINITEL) 1864 # define _GLIBCXX_HAVE_FINITEL 1 1865 # define finitel _finitel 1868 #if defined (_GLIBCXX_HAVE__FLOORF) && ! defined (_GLIBCXX_HAVE_FLOORF) 1869 # define _GLIBCXX_HAVE_FLOORF 1 1870 # define floorf _floorf 1873 #if defined (_GLIBCXX_HAVE__FLOORL) && ! defined (_GLIBCXX_HAVE_FLOORL) 1874 # define _GLIBCXX_HAVE_FLOORL 1 1875 # define floorl _floorl 1878 #if defined (_GLIBCXX_HAVE__FMODF) && ! defined (_GLIBCXX_HAVE_FMODF) 1879 # define _GLIBCXX_HAVE_FMODF 1 1880 # define fmodf _fmodf 1883 #if defined (_GLIBCXX_HAVE__FMODL) && ! defined (_GLIBCXX_HAVE_FMODL) 1884 # define _GLIBCXX_HAVE_FMODL 1 1885 # define fmodl _fmodl 1888 #if defined (_GLIBCXX_HAVE__FPCLASS) && ! defined (_GLIBCXX_HAVE_FPCLASS) 1889 # define _GLIBCXX_HAVE_FPCLASS 1 1890 # define fpclass _fpclass 1893 #if defined (_GLIBCXX_HAVE__FREXPF) && ! defined (_GLIBCXX_HAVE_FREXPF) 1894 # define _GLIBCXX_HAVE_FREXPF 1 1895 # define frexpf _frexpf 1898 #if defined (_GLIBCXX_HAVE__FREXPL) && ! defined (_GLIBCXX_HAVE_FREXPL) 1899 # define _GLIBCXX_HAVE_FREXPL 1 1900 # define frexpl _frexpl 1903 #if defined (_GLIBCXX_HAVE__HYPOT) && ! defined (_GLIBCXX_HAVE_HYPOT) 1904 # define _GLIBCXX_HAVE_HYPOT 1 1905 # define hypot _hypot 1908 #if defined (_GLIBCXX_HAVE__HYPOTF) && ! defined (_GLIBCXX_HAVE_HYPOTF) 1909 # define _GLIBCXX_HAVE_HYPOTF 1 1910 # define hypotf _hypotf 1913 #if defined (_GLIBCXX_HAVE__HYPOTL) && ! defined (_GLIBCXX_HAVE_HYPOTL) 1914 # define _GLIBCXX_HAVE_HYPOTL 1 1915 # define hypotl _hypotl 1918 #if defined (_GLIBCXX_HAVE__ISINF) && ! defined (_GLIBCXX_HAVE_ISINF) 1919 # define _GLIBCXX_HAVE_ISINF 1 1920 # define isinf _isinf 1923 #if defined (_GLIBCXX_HAVE__ISINFF) && ! defined (_GLIBCXX_HAVE_ISINFF) 1924 # define _GLIBCXX_HAVE_ISINFF 1 1925 # define isinff _isinff 1928 #if defined (_GLIBCXX_HAVE__ISINFL) && ! defined (_GLIBCXX_HAVE_ISINFL) 1929 # define _GLIBCXX_HAVE_ISINFL 1 1930 # define isinfl _isinfl 1933 #if defined (_GLIBCXX_HAVE__ISNAN) && ! defined (_GLIBCXX_HAVE_ISNAN) 1934 # define _GLIBCXX_HAVE_ISNAN 1 1935 # define isnan _isnan 1938 #if defined (_GLIBCXX_HAVE__ISNANF) && ! defined (_GLIBCXX_HAVE_ISNANF) 1939 # define _GLIBCXX_HAVE_ISNANF 1 1940 # define isnanf _isnanf 1943 #if defined (_GLIBCXX_HAVE__ISNANL) && ! defined (_GLIBCXX_HAVE_ISNANL) 1944 # define _GLIBCXX_HAVE_ISNANL 1 1945 # define isnanl _isnanl 1948 #if defined (_GLIBCXX_HAVE__LDEXPF) && ! defined (_GLIBCXX_HAVE_LDEXPF) 1949 # define _GLIBCXX_HAVE_LDEXPF 1 1950 # define ldexpf _ldexpf 1953 #if defined (_GLIBCXX_HAVE__LDEXPL) && ! defined (_GLIBCXX_HAVE_LDEXPL) 1954 # define _GLIBCXX_HAVE_LDEXPL 1 1955 # define ldexpl _ldexpl 1958 #if defined (_GLIBCXX_HAVE__LOG10F) && ! defined (_GLIBCXX_HAVE_LOG10F) 1959 # define _GLIBCXX_HAVE_LOG10F 1 1960 # define log10f _log10f 1963 #if defined (_GLIBCXX_HAVE__LOG10L) && ! defined (_GLIBCXX_HAVE_LOG10L) 1964 # define _GLIBCXX_HAVE_LOG10L 1 1965 # define log10l _log10l 1968 #if defined (_GLIBCXX_HAVE__LOGF) && ! defined (_GLIBCXX_HAVE_LOGF) 1969 # define _GLIBCXX_HAVE_LOGF 1 1973 #if defined (_GLIBCXX_HAVE__LOGL) && ! defined (_GLIBCXX_HAVE_LOGL) 1974 # define _GLIBCXX_HAVE_LOGL 1 1978 #if defined (_GLIBCXX_HAVE__MODF) && ! defined (_GLIBCXX_HAVE_MODF) 1979 # define _GLIBCXX_HAVE_MODF 1 1983 #if defined (_GLIBCXX_HAVE__MODFF) && ! defined (_GLIBCXX_HAVE_MODFF) 1984 # define _GLIBCXX_HAVE_MODFF 1 1985 # define modff _modff 1988 #if defined (_GLIBCXX_HAVE__MODFL) && ! defined (_GLIBCXX_HAVE_MODFL) 1989 # define _GLIBCXX_HAVE_MODFL 1 1990 # define modfl _modfl 1993 #if defined (_GLIBCXX_HAVE__POWF) && ! defined (_GLIBCXX_HAVE_POWF) 1994 # define _GLIBCXX_HAVE_POWF 1 1998 #if defined (_GLIBCXX_HAVE__POWL) && ! defined (_GLIBCXX_HAVE_POWL) 1999 # define _GLIBCXX_HAVE_POWL 1 2003 #if defined (_GLIBCXX_HAVE__QFPCLASS) && ! defined (_GLIBCXX_HAVE_QFPCLASS) 2004 # define _GLIBCXX_HAVE_QFPCLASS 1 2005 # define qfpclass _qfpclass 2008 #if defined (_GLIBCXX_HAVE__SINCOS) && ! defined (_GLIBCXX_HAVE_SINCOS) 2009 # define _GLIBCXX_HAVE_SINCOS 1 2010 # define sincos _sincos 2013 #if defined (_GLIBCXX_HAVE__SINCOSF) && ! defined (_GLIBCXX_HAVE_SINCOSF) 2014 # define _GLIBCXX_HAVE_SINCOSF 1 2015 # define sincosf _sincosf 2018 #if defined (_GLIBCXX_HAVE__SINCOSL) && ! defined (_GLIBCXX_HAVE_SINCOSL) 2019 # define _GLIBCXX_HAVE_SINCOSL 1 2020 # define sincosl _sincosl 2023 #if defined (_GLIBCXX_HAVE__SINF) && ! defined (_GLIBCXX_HAVE_SINF) 2024 # define _GLIBCXX_HAVE_SINF 1 2028 #if defined (_GLIBCXX_HAVE__SINHF) && ! defined (_GLIBCXX_HAVE_SINHF) 2029 # define _GLIBCXX_HAVE_SINHF 1 2030 # define sinhf _sinhf 2033 #if defined (_GLIBCXX_HAVE__SINHL) && ! defined (_GLIBCXX_HAVE_SINHL) 2034 # define _GLIBCXX_HAVE_SINHL 1 2035 # define sinhl _sinhl 2038 #if defined (_GLIBCXX_HAVE__SINL) && ! defined (_GLIBCXX_HAVE_SINL) 2039 # define _GLIBCXX_HAVE_SINL 1 2043 #if defined (_GLIBCXX_HAVE__SQRTF) && ! defined (_GLIBCXX_HAVE_SQRTF) 2044 # define _GLIBCXX_HAVE_SQRTF 1 2045 # define sqrtf _sqrtf 2048 #if defined (_GLIBCXX_HAVE__SQRTL) && ! defined (_GLIBCXX_HAVE_SQRTL) 2049 # define _GLIBCXX_HAVE_SQRTL 1 2050 # define sqrtl _sqrtl 2053 #if defined (_GLIBCXX_HAVE__STRTOF) && ! defined (_GLIBCXX_HAVE_STRTOF) 2054 # define _GLIBCXX_HAVE_STRTOF 1 2055 # define strtof _strtof 2058 #if defined (_GLIBCXX_HAVE__STRTOLD) && ! defined (_GLIBCXX_HAVE_STRTOLD) 2059 # define _GLIBCXX_HAVE_STRTOLD 1 2060 # define strtold _strtold 2063 #if defined (_GLIBCXX_HAVE__TANF) && ! defined (_GLIBCXX_HAVE_TANF) 2064 # define _GLIBCXX_HAVE_TANF 1 2068 #if defined (_GLIBCXX_HAVE__TANHF) && ! defined (_GLIBCXX_HAVE_TANHF) 2069 # define _GLIBCXX_HAVE_TANHF 1 2070 # define tanhf _tanhf 2073 #if defined (_GLIBCXX_HAVE__TANHL) && ! defined (_GLIBCXX_HAVE_TANHL) 2074 # define _GLIBCXX_HAVE_TANHL 1 2075 # define tanhl _tanhl 2078 #if defined (_GLIBCXX_HAVE__TANL) && ! defined (_GLIBCXX_HAVE_TANL) 2079 # define _GLIBCXX_HAVE_TANL 1 2083 #endif // _GLIBCXX_CXX_CONFIG_H
GNU extensions for public use.
ISO C++ entities toplevel namespace is std.