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llvm-project/libcxx/include/__cxx03/numeric
Nikolas Klauser e78f53d1e8
Reapply "[libc++][C++03] Copy the LLVM 19 headers (#108999)" (#112127) 
This reverts commit 68c04b0ae62d8431d72d8b47fc13008002ee4387.

This disables the IWYU mapping that caused the failure, since
the headers aren't reachable for now.

This is the first part of the "Freezing C++03 headers" proposal
explained in
https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319/58.

This patch mechanically copies the headers as of the LLVM 19.1 release
into a subdirectory of libc++ so that we can start using these headers
when building in C++03 mode. We are going to be backporting important
changes to that copy of the headers until the LLVM 21 release. After the
LLVM 21 release, only critical bugfixes will be fixed in the C++03 copy
of the headers.

This patch only performs a copy of the headers -- these headers are
still unused by the rest of the codebase.
2024-10-24 00:17:37 +02:00

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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_NUMERIC
#define _LIBCPP_NUMERIC
/*
numeric synopsis
namespace std
{
template <class InputIterator, class T>
constexpr T // constexpr since C++20
accumulate(InputIterator first, InputIterator last, T init);
template <class InputIterator, class T, class BinaryOperation>
constexpr T // constexpr since C++20
accumulate(InputIterator first, InputIterator last, T init, BinaryOperation binary_op);
template<class InputIterator>
constexpr typename iterator_traits<InputIterator>::value_type // constexpr since C++20
reduce(InputIterator first, InputIterator last); // C++17
template<class InputIterator, class T>
constexpr T // constexpr since C++20
reduce(InputIterator first, InputIterator last, T init); // C++17
template<class InputIterator, class T, class BinaryOperation>
constexpr T // constexpr since C++20
reduce(InputIterator first, InputIterator last, T init, BinaryOperation binary_op); // C++17
template <class InputIterator1, class InputIterator2, class T>
constexpr T // constexpr since C++20
inner_product(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, T init);
template <class InputIterator1, class InputIterator2, class T, class BinaryOperation1, class BinaryOperation2>
constexpr T // constexpr since C++20
inner_product(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2,
T init, BinaryOperation1 binary_op1, BinaryOperation2 binary_op2);
template<class InputIterator1, class InputIterator2, class T>
constexpr T // constexpr since C++20
transform_reduce(InputIterator1 first1, InputIterator1 last1,
InputIterator2 first2, T init); // C++17
template<class InputIterator1, class InputIterator2, class T, class BinaryOperation1, class BinaryOperation2>
constexpr T // constexpr since C++20
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>
constexpr T // constexpr since C++20
transform_reduce(InputIterator first, InputIterator last, T init,
BinaryOperation binary_op, UnaryOperation unary_op); // C++17
template <class InputIterator, class OutputIterator>
constexpr OutputIterator // constexpr since C++20
partial_sum(InputIterator first, InputIterator last, OutputIterator result);
template <class InputIterator, class OutputIterator, class BinaryOperation>
constexpr OutputIterator // constexpr since C++20
partial_sum(InputIterator first, InputIterator last, OutputIterator result, BinaryOperation binary_op);
template<class InputIterator, class OutputIterator, class T>
constexpr OutputIterator // constexpr since C++20
exclusive_scan(InputIterator first, InputIterator last,
OutputIterator result, T init); // C++17
template<class InputIterator, class OutputIterator, class T, class BinaryOperation>
constexpr OutputIterator // constexpr since C++20
exclusive_scan(InputIterator first, InputIterator last,
OutputIterator result, T init, BinaryOperation binary_op); // C++17
template<class InputIterator, class OutputIterator>
constexpr OutputIterator // constexpr since C++20
inclusive_scan(InputIterator first, InputIterator last, OutputIterator result); // C++17
template<class InputIterator, class OutputIterator, class BinaryOperation>
constexpr OutputIterator // constexpr since C++20
inclusive_scan(InputIterator first, InputIterator last,
OutputIterator result, BinaryOperation binary_op); // C++17
template<class InputIterator, class OutputIterator, class BinaryOperation, class T>
constexpr OutputIterator // constexpr since C++20
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>
constexpr OutputIterator // constexpr since C++20
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>
constexpr OutputIterator // constexpr since C++20
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>
constexpr OutputIterator // constexpr since C++20
transform_inclusive_scan(InputIterator first, InputIterator last,
OutputIterator result,
BinaryOperation binary_op, UnaryOperation unary_op,
T init); // C++17
template <class InputIterator, class OutputIterator>
constexpr OutputIterator // constexpr since C++20
adjacent_difference(InputIterator first, InputIterator last, OutputIterator result);
template <class InputIterator, class OutputIterator, class BinaryOperation>
constexpr OutputIterator // constexpr since C++20
adjacent_difference(InputIterator first, InputIterator last, OutputIterator result, BinaryOperation binary_op);
template <class ForwardIterator, class T>
constexpr void // constexpr since C++20
iota(ForwardIterator first, ForwardIterator last, T value);
template <class M, class N>
constexpr common_type_t<M,N> gcd(M m, N n); // C++17
template <class M, class N>
constexpr common_type_t<M,N> lcm(M m, N n); // C++17
template<class T>
constexpr T midpoint(T a, T b) noexcept; // C++20
template<class T>
constexpr T* midpoint(T* a, T* b); // C++20
// [numeric.sat], saturation arithmetic
template<class T>
constexpr T add_sat(T x, T y) noexcept; // freestanding, Since C++26
template<class T>
constexpr T sub_sat(T x, T y) noexcept; // freestanding, Since C++26
template<class T>
constexpr T mul_sat(T x, T y) noexcept; // freestanding, Since C++26
template<class T>
constexpr T div_sat(T x, T y) noexcept; // freestanding, Since C++26
template<class T, class U>
constexpr T saturate_cast(U x) noexcept; // freestanding, Since C++26
} // std
*/
#include <__config>
#include <__numeric/accumulate.h>
#include <__numeric/adjacent_difference.h>
#include <__numeric/inner_product.h>
#include <__numeric/iota.h>
#include <__numeric/partial_sum.h>
#if _LIBCPP_STD_VER >= 17
# include <__numeric/exclusive_scan.h>
# include <__numeric/gcd_lcm.h>
# include <__numeric/inclusive_scan.h>
# include <__numeric/pstl.h>
# include <__numeric/reduce.h>
# include <__numeric/transform_exclusive_scan.h>
# include <__numeric/transform_inclusive_scan.h>
# include <__numeric/transform_reduce.h>
#endif
#if _LIBCPP_STD_VER >= 20
# include <__numeric/midpoint.h>
# include <__numeric/saturation_arithmetic.h>
#endif
#include <version>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 14
# include <initializer_list>
# include <limits>
#endif
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
# include <climits>
# include <cmath>
# include <concepts>
# include <cstdint>
# include <execution>
# include <functional>
# include <iterator>
# include <new>
# include <optional>
# include <type_traits>
#endif
#endif // _LIBCPP_NUMERIC
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