diff options
Diffstat (limited to 'contrib/libc++/include/numeric')
| -rw-r--r-- | contrib/libc++/include/numeric | 291 |
1 files changed, 277 insertions, 14 deletions
diff --git a/contrib/libc++/include/numeric b/contrib/libc++/include/numeric index e005808..1b7d97c 100644 --- a/contrib/libc++/include/numeric +++ b/contrib/libc++/include/numeric @@ -25,6 +25,18 @@ template <class InputIterator, class T, class BinaryOperation> T accumulate(InputIterator first, InputIterator last, T init, BinaryOperation binary_op); +template<class InputIterator> + typename iterator_traits<InputIterator>::value_type + reduce(InputIterator first, InputIterator last); // C++17 + +template<class InputIterator, class T> + T + reduce(InputIterator first, InputIterator last, T init); // C++17 + +template<class InputIterator, class T, class BinaryOperation> + T + reduce(InputIterator first, InputIterator last, T init, BinaryOperation binary_op); // C++17 + template <class InputIterator1, class InputIterator2, class T> T inner_product(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, T init); @@ -34,6 +46,23 @@ template <class InputIterator1, class InputIterator2, class T, class BinaryOpera inner_product(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, T init, BinaryOperation1 binary_op1, BinaryOperation2 binary_op2); + +template<class InputIterator1, class InputIterator2, class T> + T + transform_reduce(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, T init); // C++17 + +template<class InputIterator1, class InputIterator2, class T, class BinaryOperation1, class BinaryOperation2> + T + transform_reduce(InputIterator1 first1, InputIterator1 last1, + InputIterator2 first2, T init, + BinaryOperation1 binary_op1, BinaryOperation2 binary_op2); // C++17 + +template<class InputIterator, class T, class BinaryOperation, class UnaryOperation> + T + transform_reduce(InputIterator first, InputIterator last, T init, + BinaryOperation binary_op, UnaryOperation unary_op); // C++17 + template <class InputIterator, class OutputIterator> OutputIterator partial_sum(InputIterator first, InputIterator last, OutputIterator result); @@ -42,6 +71,52 @@ template <class InputIterator, class OutputIterator, class BinaryOperation> OutputIterator partial_sum(InputIterator first, InputIterator last, OutputIterator result, BinaryOperation binary_op); +template<class InputIterator, class OutputIterator, class T> + OutputIterator + exclusive_scan(InputIterator first, InputIterator last, + OutputIterator result, T init); // C++17 + +template<class InputIterator, class OutputIterator, class T, class BinaryOperation> + OutputIterator + exclusive_scan(InputIterator first, InputIterator last, + OutputIterator result, T init, BinaryOperation binary_op); // C++17 + +template<class InputIterator, class OutputIterator> + OutputIterator + inclusive_scan(InputIterator first, InputIterator last, OutputIterator result); // C++17 + +template<class InputIterator, class OutputIterator, class BinaryOperation> + OutputIterator + inclusive_scan(InputIterator first, InputIterator last, + OutputIterator result, BinaryOperation binary_op); // C++17 + +template<class InputIterator, class OutputIterator, class BinaryOperation, class T> + OutputIterator + inclusive_scan(InputIterator first, InputIterator last, + OutputIterator result, BinaryOperation binary_op, T init); // C++17 + +template<class InputIterator, class OutputIterator, class T, + class BinaryOperation, class UnaryOperation> + OutputIterator + transform_exclusive_scan(InputIterator first, InputIterator last, + OutputIterator result, T init, + BinaryOperation binary_op, UnaryOperation unary_op); // C++17 + +template<class InputIterator, class OutputIterator, + class BinaryOperation, class UnaryOperation> + OutputIterator + transform_inclusive_scan(InputIterator first, InputIterator last, + OutputIterator result, + BinaryOperation binary_op, UnaryOperation unary_op); // C++17 + +template<class InputIterator, class OutputIterator, + class BinaryOperation, class UnaryOperation, class T> + OutputIterator + transform_inclusive_scan(InputIterator first, InputIterator last, + OutputIterator result, + BinaryOperation binary_op, UnaryOperation unary_op, + T init); // C++17 + template <class InputIterator, class OutputIterator> OutputIterator adjacent_difference(InputIterator first, InputIterator last, OutputIterator result); @@ -65,11 +140,16 @@ template <class M, class N> #include <__config> #include <iterator> +#include <limits> // for numeric_limits +#include <functional> #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) #pragma GCC system_header #endif +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + _LIBCPP_BEGIN_NAMESPACE_STD template <class _InputIterator, class _Tp> @@ -92,6 +172,35 @@ accumulate(_InputIterator __first, _InputIterator __last, _Tp __init, _BinaryOpe return __init; } +#if _LIBCPP_STD_VER > 14 +template <class _InputIterator, class _Tp, class _BinaryOp> +inline _LIBCPP_INLINE_VISIBILITY +_Tp +reduce(_InputIterator __first, _InputIterator __last, _Tp __init, _BinaryOp __b) +{ + for (; __first != __last; ++__first) + __init = __b(__init, *__first); + return __init; +} + +template <class _InputIterator, class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +_Tp +reduce(_InputIterator __first, _InputIterator __last, _Tp __init) +{ + return _VSTD::reduce(__first, __last, __init, _VSTD::plus<>()); +} + +template <class _InputIterator> +inline _LIBCPP_INLINE_VISIBILITY +typename iterator_traits<_InputIterator>::value_type +reduce(_InputIterator __first, _InputIterator __last) +{ + return _VSTD::reduce(__first, __last, + typename iterator_traits<_InputIterator>::value_type{}); +} +#endif + template <class _InputIterator1, class _InputIterator2, class _Tp> inline _LIBCPP_INLINE_VISIBILITY _Tp @@ -113,6 +222,41 @@ inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 return __init; } +#if _LIBCPP_STD_VER > 14 +template <class _InputIterator, class _Tp, class _BinaryOp, class _UnaryOp> +inline _LIBCPP_INLINE_VISIBILITY +_Tp +transform_reduce(_InputIterator __first, _InputIterator __last, + _Tp __init, _BinaryOp __b, _UnaryOp __u) +{ + for (; __first != __last; ++__first) + __init = __b(__init, __u(*__first)); + return __init; +} + +template <class _InputIterator1, class _InputIterator2, + class _Tp, class _BinaryOp1, class _BinaryOp2> +inline _LIBCPP_INLINE_VISIBILITY +_Tp +transform_reduce(_InputIterator1 __first1, _InputIterator1 __last1, + _InputIterator2 __first2, _Tp __init, _BinaryOp1 __b1, _BinaryOp2 __b2) +{ + for (; __first1 != __last1; ++__first1, (void) ++__first2) + __init = __b1(__init, __b2(*__first1, *__first2)); + return __init; +} + +template <class _InputIterator1, class _InputIterator2, class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +_Tp +transform_reduce(_InputIterator1 __first1, _InputIterator1 __last1, + _InputIterator2 __first2, _Tp __init) +{ + return _VSTD::transform_reduce(__first1, __last1, __first2, __init, + _VSTD::plus<>(), _VSTD::multiplies<>()); +} +#endif + template <class _InputIterator, class _OutputIterator> inline _LIBCPP_INLINE_VISIBILITY _OutputIterator @@ -150,6 +294,117 @@ partial_sum(_InputIterator __first, _InputIterator __last, _OutputIterator __res return __result; } +#if _LIBCPP_STD_VER > 14 +template <class _InputIterator, class _OutputIterator, class _Tp, class _BinaryOp> +inline _LIBCPP_INLINE_VISIBILITY +_OutputIterator +exclusive_scan(_InputIterator __first, _InputIterator __last, + _OutputIterator __result, _Tp __init, _BinaryOp __b) +{ + if (__first != __last) + { + _Tp __saved = __init; + do + { + __init = __b(__init, *__first); + *__result = __saved; + __saved = __init; + ++__result; + } while (++__first != __last); + } + return __result; +} + +template <class _InputIterator, class _OutputIterator, class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +_OutputIterator +exclusive_scan(_InputIterator __first, _InputIterator __last, + _OutputIterator __result, _Tp __init) +{ + return _VSTD::exclusive_scan(__first, __last, __result, __init, _VSTD::plus<>()); +} + +template <class _InputIterator, class _OutputIterator, class _Tp, class _BinaryOp> +_OutputIterator inclusive_scan(_InputIterator __first, _InputIterator __last, + _OutputIterator __result, _BinaryOp __b, _Tp __init) +{ + for (; __first != __last; ++__first, (void) ++__result) { + __init = __b(__init, *__first); + *__result = __init; + } + return __result; +} + +template <class _InputIterator, class _OutputIterator, class _BinaryOp> +_OutputIterator inclusive_scan(_InputIterator __first, _InputIterator __last, + _OutputIterator __result, _BinaryOp __b) +{ + if (__first != __last) { + typename std::iterator_traits<_InputIterator>::value_type __init = *__first; + *__result++ = __init; + if (++__first != __last) + return _VSTD::inclusive_scan(__first, __last, __result, __b, __init); + } + + return __result; +} + +template <class _InputIterator, class _OutputIterator> +_OutputIterator inclusive_scan(_InputIterator __first, _InputIterator __last, + _OutputIterator __result) +{ + return _VSTD::inclusive_scan(__first, __last, __result, std::plus<>()); +} + +template <class _InputIterator, class _OutputIterator, class _Tp, + class _BinaryOp, class _UnaryOp> +inline _LIBCPP_INLINE_VISIBILITY +_OutputIterator +transform_exclusive_scan(_InputIterator __first, _InputIterator __last, + _OutputIterator __result, _Tp __init, + _BinaryOp __b, _UnaryOp __u) +{ + if (__first != __last) + { + _Tp __saved = __init; + do + { + __init = __b(__init, __u(*__first)); + *__result = __saved; + __saved = __init; + ++__result; + } while (++__first != __last); + } + return __result; +} + +template <class _InputIterator, class _OutputIterator, class _Tp, class _BinaryOp, class _UnaryOp> +_OutputIterator transform_inclusive_scan(_InputIterator __first, _InputIterator __last, + _OutputIterator __result, _BinaryOp __b, _UnaryOp __u, _Tp __init) +{ + for (; __first != __last; ++__first, (void) ++__result) { + __init = __b(__init, __u(*__first)); + *__result = __init; + } + + return __result; +} + +template <class _InputIterator, class _OutputIterator, class _BinaryOp, class _UnaryOp> +_OutputIterator transform_inclusive_scan(_InputIterator __first, _InputIterator __last, + _OutputIterator __result, _BinaryOp __b, _UnaryOp __u) +{ + if (__first != __last) { + typename std::iterator_traits<_InputIterator>::value_type __init = __u(*__first); + *__result++ = __init; + if (++__first != __last) + return _VSTD::transform_inclusive_scan(__first, __last, __result, __b, __u, __init); + } + + return __result; +} +#endif + template <class _InputIterator, class _OutputIterator> inline _LIBCPP_INLINE_VISIBILITY _OutputIterator @@ -200,27 +455,32 @@ iota(_ForwardIterator __first, _ForwardIterator __last, _Tp __value_) #if _LIBCPP_STD_VER > 14 -template <typename _Tp, bool _IsSigned = is_signed<_Tp>::value> struct __abs; +template <typename _Result, typename _Source, bool _IsSigned = is_signed<_Source>::value> struct __abs; -template <typename _Tp> -struct __abs<_Tp, true> { +template <typename _Result, typename _Source> +struct __abs<_Result, _Source, true> { _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY - _Tp operator()(_Tp __t) const noexcept { return __t >= 0 ? __t : -__t; } + _Result operator()(_Source __t) const noexcept + { + if (__t >= 0) return __t; + if (__t == numeric_limits<_Source>::min()) return -static_cast<_Result>(__t); + return -__t; + } }; -template <typename _Tp> -struct __abs<_Tp, false> { +template <typename _Result, typename _Source> +struct __abs<_Result, _Source, false> { _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY - _Tp operator()(_Tp __t) const noexcept { return __t; } + _Result operator()(_Source __t) const noexcept { return __t; } }; template<class _Tp> -_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR _LIBCPP_HIDDEN _Tp __gcd(_Tp __m, _Tp __n) { - static_assert((!is_signed<_Tp>::value), "" ); - return __n == 0 ? __m : __gcd<_Tp>(__n, __m % __n); + static_assert((!is_signed<_Tp>::value), ""); + return __n == 0 ? __m : _VSTD::__gcd<_Tp>(__n, __m % __n); } @@ -234,8 +494,9 @@ gcd(_Tp __m, _Up __n) static_assert((!is_same<typename remove_cv<_Up>::type, bool>::value), "Second argument to gcd cannot be bool" ); using _Rp = common_type_t<_Tp,_Up>; using _Wp = make_unsigned_t<_Rp>; - return static_cast<_Rp>(__gcd(static_cast<_Wp>(__abs<_Tp>()(__m)), - static_cast<_Wp>(__abs<_Up>()(__n)))); + return static_cast<_Rp>(_VSTD::__gcd( + static_cast<_Wp>(__abs<_Rp, _Tp>()(__m)), + static_cast<_Wp>(__abs<_Rp, _Up>()(__n)))); } template<class _Tp, class _Up> @@ -250,8 +511,8 @@ lcm(_Tp __m, _Up __n) return 0; using _Rp = common_type_t<_Tp,_Up>; - _Rp __val1 = __abs<_Tp>()(__m) / gcd(__m,__n); - _Up __val2 = __abs<_Up>()(__n); + _Rp __val1 = __abs<_Rp, _Tp>()(__m) / _VSTD::gcd(__m, __n); + _Rp __val2 = __abs<_Rp, _Up>()(__n); _LIBCPP_ASSERT((numeric_limits<_Rp>::max() / __val1 > __val2), "Overflow in lcm"); return __val1 * __val2; } @@ -260,4 +521,6 @@ lcm(_Tp __m, _Up __n) _LIBCPP_END_NAMESPACE_STD +_LIBCPP_POP_MACROS + #endif // _LIBCPP_NUMERIC |
