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uintwide_t.h
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uintwide_t.h
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///////////////////////////////////////////////////////////////////
// Copyright Christopher Kormanyos 1999 - 2024. //
// Distributed under the Boost Software License, //
// Version 1.0. (See accompanying file LICENSE_1_0.txt //
// or copy at http://www.boost.org/LICENSE_1_0.txt) //
///////////////////////////////////////////////////////////////////
#ifndef UINTWIDE_T_2018_10_02_H // NOLINT(llvm-header-guard)
#define UINTWIDE_T_2018_10_02_H
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmissing-declarations"
#endif
#if ((__cplusplus < 202100L) || (defined(__GNUC__) && defined(__AVR__)))
#include <ciso646>
#else
#include <version>
#endif
#if (defined(__cpp_lib_to_chars) && (__cpp_lib_to_chars >= 201611L))
#include <charconv>
#endif
#include <cinttypes>
#if !defined(WIDE_INTEGER_DISABLE_FLOAT_INTEROP)
#include <cmath>
#endif
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <initializer_list>
#if !defined(WIDE_INTEGER_DISABLE_IOSTREAM)
#include <iomanip>
#include <istream>
#endif
#include <limits>
#if !defined(WIDE_INTEGER_DISABLE_IMPLEMENT_UTIL_DYNAMIC_ARRAY)
#include <memory>
#endif
#if (defined(__cpp_lib_gcd_lcm) && (__cpp_lib_gcd_lcm >= 201606L))
#include <numeric>
#endif
#if !defined(WIDE_INTEGER_DISABLE_IOSTREAM)
#include <ostream>
#include <sstream>
#endif
#if !defined(WIDE_INTEGER_DISABLE_TO_STRING)
#include <string>
#endif
#include <type_traits>
#include <utility>
#if (defined(__clang__) && (__clang_major__ <= 9))
#define WIDE_INTEGER_NUM_LIMITS_CLASS_TYPE struct // NOLINT(cppcoreguidelines-macro-usage)
#else
#define WIDE_INTEGER_NUM_LIMITS_CLASS_TYPE class // NOLINT(cppcoreguidelines-macro-usage)
#endif
#if (defined(_MSC_VER) && (!defined(__GNUC__) && !defined(__clang__)))
#if (_MSC_VER >= 1900) && defined(_HAS_CXX20) && (_HAS_CXX20 != 0)
#define WIDE_INTEGER_NODISCARD [[nodiscard]] // NOLINT(cppcoreguidelines-macro-usage)
#else
#define WIDE_INTEGER_NODISCARD
#endif
#else
#if ((defined(__cplusplus) && (__cplusplus >= 201703L)) && (defined(__has_cpp_attribute) && (__has_cpp_attribute(nodiscard) >= 201603L)))
#define WIDE_INTEGER_NODISCARD [[nodiscard]] // NOLINT(cppcoreguidelines-macro-usage)
#else
#define WIDE_INTEGER_NODISCARD
#endif
#endif
#if defined(WIDE_INTEGER_NAMESPACE_BEGIN) || defined(WIDE_INTEGER_NAMESPACE_END)
#error internal pre-processor macro already defined
#endif
#if defined(WIDE_INTEGER_NAMESPACE)
#define WIDE_INTEGER_NAMESPACE_BEGIN namespace WIDE_INTEGER_NAMESPACE { // NOLINT(cppcoreguidelines-macro-usage)
#define WIDE_INTEGER_NAMESPACE_END } // namespace WIDE_INTEGER_NAMESPACE // NOLINT(cppcoreguidelines-macro-usage)
#else
#define WIDE_INTEGER_NAMESPACE_BEGIN
#define WIDE_INTEGER_NAMESPACE_END
#endif
// Forward declaration needed for class-friendship with the uintwide_t template class.
namespace test_uintwide_t_edge { auto test_various_isolated_edge_cases() -> bool; } // namespace test_uintwide_t_edge
WIDE_INTEGER_NAMESPACE_BEGIN
#if(__cplusplus >= 201703L)
namespace math::wide_integer::detail {
#else
namespace math { namespace wide_integer { namespace detail { // NOLINT(modernize-concat-nested-namespaces)
#endif
namespace iterator_detail {
class input_iterator_tag {};
class output_iterator_tag {};
class forward_iterator_tag : public input_iterator_tag {};
class bidirectional_iterator_tag : public forward_iterator_tag {};
class random_access_iterator_tag : public bidirectional_iterator_tag {};
template<typename iterator_type>
class iterator_traits
{
public:
using difference_type = typename iterator_type::difference_type;
using value_type = typename iterator_type::value_type;
using pointer = typename iterator_type::pointer;
using reference = typename iterator_type::reference;
using iterator_category = typename iterator_type::iterator_category;
};
template<typename T>
class iterator_traits<T*>
{
public:
using difference_type = std::ptrdiff_t;
using value_type = T;
using pointer = value_type*;
using reference = value_type&;
using iterator_category = random_access_iterator_tag;
};
template<typename T>
class iterator_traits<const T*>
{
public:
using difference_type = std::ptrdiff_t;
using value_type = T;
using pointer = const value_type*;
using reference = const value_type&;
using iterator_category = random_access_iterator_tag;
};
template<typename my_category,
typename my_value_type,
typename my_difference_type = std::ptrdiff_t,
typename my_pointer_type = my_value_type*,
typename my_reference_type = my_value_type&>
struct my_iterator
{
using iterator_category = my_category;
using value_type = my_value_type;
using difference_type = my_difference_type;
using pointer = my_pointer_type;
using reference = my_reference_type;
constexpr my_iterator() = default;
};
template <typename iterator_type>
class reverse_iterator : public my_iterator<typename iterator_traits<iterator_type>::iterator_category,
typename iterator_traits<iterator_type>::value_type,
typename iterator_traits<iterator_type>::difference_type,
typename iterator_traits<iterator_type>::pointer,
typename iterator_traits<iterator_type>::reference>
{
public:
using value_type = typename iterator_traits<iterator_type>::value_type;
using difference_type = typename iterator_traits<iterator_type>::difference_type;
using pointer = typename iterator_traits<iterator_type>::pointer;
using reference = typename iterator_traits<iterator_type>::reference;
using iterator_category = typename iterator_traits<iterator_type>::iterator_category;
constexpr reverse_iterator() = default;
explicit constexpr reverse_iterator(iterator_type x) : current(x) { }
template<typename other>
constexpr reverse_iterator(const reverse_iterator<other>& u) : current(u.current) { } // NOLINT(google-explicit-constructor,hicpp-explicit-conversions)
WIDE_INTEGER_NODISCARD constexpr auto base() const -> iterator_type { return current; }
constexpr auto operator* () const -> reference { iterator_type tmp = current; return *--tmp; }
constexpr auto operator->() const -> pointer { return &(operator*()); }
constexpr auto operator++() -> reverse_iterator& { --current; return *this; }
constexpr auto operator--() -> reverse_iterator& { ++current; return *this; }
constexpr auto operator++(int) -> reverse_iterator { reverse_iterator tmp = *this; --current; return tmp; }
constexpr auto operator--(int) -> reverse_iterator { reverse_iterator tmp = *this; ++current; return tmp; }
constexpr auto operator+(typename reverse_iterator<iterator_type>::difference_type n) const -> reverse_iterator { return reverse_iterator(current - n); }
constexpr auto operator-(typename reverse_iterator<iterator_type>::difference_type n) const -> reverse_iterator { return reverse_iterator(current + n); }
constexpr auto operator+=(typename reverse_iterator<iterator_type>::difference_type n) -> reverse_iterator& { current -= n; return *this; }
constexpr auto operator-=(typename reverse_iterator<iterator_type>::difference_type n) -> reverse_iterator& { current += n; return *this; }
constexpr auto operator[](typename reverse_iterator<iterator_type>::difference_type n) const -> reference { return current[-n - 1]; }
private:
iterator_type current; // NOLINT(readability-identifier-naming)
friend constexpr auto operator< (const reverse_iterator& x, const reverse_iterator& y) -> bool { return (x.current > y.current); }
friend constexpr auto operator<=(const reverse_iterator& x, const reverse_iterator& y) -> bool { return (x.current >= y.current); }
friend constexpr auto operator==(const reverse_iterator& x, const reverse_iterator& y) -> bool { return (x.current == y.current); }
friend constexpr auto operator!=(const reverse_iterator& x, const reverse_iterator& y) -> bool { return (x.current != y.current); }
friend constexpr auto operator>=(const reverse_iterator& x, const reverse_iterator& y) -> bool { return (x.current <= y.current); }
friend constexpr auto operator> (const reverse_iterator& x, const reverse_iterator& y) -> bool { return (x.current < y.current); }
friend constexpr auto operator-(const reverse_iterator& x, const reverse_iterator& y) -> typename reverse_iterator::difference_type
{
return (y.current - x.current);
}
friend constexpr auto operator+(typename reverse_iterator::difference_type n, const reverse_iterator& x) -> reverse_iterator
{
return reverse_iterator(x.current - n);
}
};
} // namespace iterator_detail
// Forward declaration of:
// Use a local, constexpr, unsafe implementation of the abs-function.
template<typename ArithmeticType>
constexpr auto abs_unsafe(ArithmeticType val) -> ArithmeticType;
// Use a local, constexpr, unsafe implementation of the fill-function.
template<typename DestinationIterator,
typename ValueType>
constexpr auto fill_unsafe(DestinationIterator first, DestinationIterator last, ValueType val) -> void
{
while(first != last)
{
using local_destination_value_type = typename iterator_detail::iterator_traits<DestinationIterator>::value_type;
*first = static_cast<local_destination_value_type>(val);
++first;
}
}
// Use a local, constexpr, unsafe implementation of the max-function.
template<typename ArithmeticType>
constexpr auto max_unsafe(const ArithmeticType& left, const ArithmeticType& right) -> ArithmeticType
{
return ((left < right) ? right : left);
}
// Use a local, constexpr, unsafe implementation of the max-function.
template<typename ArithmeticType>
constexpr auto min_unsafe(const ArithmeticType& left, const ArithmeticType& right) -> ArithmeticType
{
return ((right < left) ? right : left);
}
// Use a local, constexpr, unsafe implementation of the copy-function.
template<typename InputIterator,
typename DestinationIterator>
constexpr auto copy_unsafe(InputIterator first, InputIterator last, DestinationIterator dest) -> DestinationIterator
{
while(first != last)
{
using local_destination_value_type = typename iterator_detail::iterator_traits<DestinationIterator>::value_type;
#if (defined(__GNUC__) && (__GNUC__ > 9))
#pragma GCC diagnostic ignored "-Wstringop-overflow"
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
*dest++ = static_cast<local_destination_value_type>(*first++);
#if (defined(__GNUC__) && (__GNUC__ > 9))
#pragma GCC diagnostic pop
#pragma GCC diagnostic pop
#endif
}
return dest;
}
// Use a local, constexpr, unsafe implementation of the copy-backward-function.
template<typename InputIterator,
typename DestinationIterator>
constexpr auto copy_backward_unsafe(InputIterator first, InputIterator last, DestinationIterator dest) -> DestinationIterator
{
using local_destination_value_type = typename iterator_detail::iterator_traits<DestinationIterator>::value_type;
while(first != last)
{
*(--dest) = static_cast<local_destination_value_type>(*(--last));
}
return dest;
}
template<typename T>
constexpr auto swap_unsafe(T& left, T& right) noexcept -> void
{
auto tmp = static_cast<T&&>(left);
left = static_cast<T&&>(right);
right = static_cast<T&&>(tmp);
}
template<typename InputIt, typename UnaryPredicate>
constexpr auto find_if_unsafe(InputIt first, InputIt last, UnaryPredicate p) -> InputIt
{
while(first != last)
{
if(p(*first))
{
return first;
}
++first;
}
return last; // LCOV_EXCL_LINE
}
template<typename ForwardIt, typename T>
constexpr auto lower_bound_unsafe(ForwardIt first, ForwardIt last, const T& value) -> ForwardIt
{
using local_iterator_type = ForwardIt;
using local_difference_type = typename iterator_detail::iterator_traits<ForwardIt>::difference_type;
local_difference_type step { };
auto count = static_cast<local_difference_type>(last - first); // NOLINT(altera-id-dependent-backward-branch)
local_iterator_type itr { };
while(count > static_cast<local_difference_type>(INT8_C(0))) // NOLINT(altera-id-dependent-backward-branch)
{
itr = first;
step = static_cast<local_difference_type>(count / static_cast<local_difference_type>(INT8_C(2)));
itr += step;
if (*itr < value)
{
first = ++itr;
count -= static_cast<local_difference_type>(step + static_cast<local_difference_type>(INT8_C(1)));
}
else
{
count = step;
}
}
return first;
}
template<class ForwardIt, class T>
constexpr auto binary_search_unsafe(ForwardIt first, ForwardIt last, const T& value) -> bool
{
first = lower_bound_unsafe(first, last, value);
return ((!(first == last)) && (!(value < *first)));
}
namespace distance_detail
{
template<class It>
constexpr auto do_distance_unsafe(It first, It last, detail::iterator_detail::random_access_iterator_tag) -> typename detail::iterator_detail::iterator_traits<It>::difference_type // NOLINT(hicpp-named-parameter,readability-named-parameter)
{
using local_difference_type = typename detail::iterator_detail::iterator_traits<It>::difference_type;
return static_cast<local_difference_type>(last - first);
}
} // namespace distance_detail
template<class It>
constexpr auto distance_unsafe(It first, It last) -> typename iterator_detail::iterator_traits<It>::difference_type
{
using local_iterator_category_type = typename iterator_detail::iterator_traits<It>::iterator_category;
return
distance_detail::do_distance_unsafe
(
first,
last,
local_iterator_category_type()
);
}
template<class InputIt1, class InputIt2>
constexpr auto equal_unsafe(InputIt1 first1, InputIt1 last1, InputIt2 first2) -> bool
{
while(first1 != last1)
{
if(!(*first1 == *first2))
{
return false;
}
++first1;
++first2;
}
return true;
}
template<class InputIt1, class InputIt2>
constexpr auto lexicographical_compare_unsafe(InputIt1 first1, InputIt1 last1, InputIt2 first2, InputIt2 last2) -> bool
{
while((first1 != last1) && (first2 != last2))
{
if(*first1 < *first2)
{
return true;
}
if(*first2 < *first1)
{
return false;
}
++first1;
++first2;
}
return ((first1 == last1) && (first2 != last2));
}
template<typename Iterator1, typename Iterator2>
constexpr auto iter_swap_unsafe(Iterator1 a, Iterator2 b) -> void
{
using local_value_type = typename iterator_detail::iterator_traits<Iterator1>::value_type;
swap_unsafe(static_cast<local_value_type&>(*a), static_cast<local_value_type&>(*b));
}
template<class ForwardIt1, class ForwardIt2>
constexpr auto swap_ranges_unsafe(ForwardIt1 first1, ForwardIt1 last1, ForwardIt2 first2) -> ForwardIt2
{
while(first1 != last1)
{
iter_swap_unsafe(first1, first2);
++first1;
++first2;
}
return first2;
}
template <class UnsignedIntegralType>
constexpr auto clz_unsafe(UnsignedIntegralType v) noexcept -> std::enable_if_t<( (std::is_integral<UnsignedIntegralType>::value)
&& (std::is_unsigned<UnsignedIntegralType>::value)), unsigned>
{
using local_unsigned_integral_type = UnsignedIntegralType;
auto yy_val = static_cast<local_unsigned_integral_type>(UINT8_C(0));
auto nn_val = static_cast<unsigned>(std::numeric_limits<local_unsigned_integral_type>::digits);
auto cc_val = // NOLINT(altera-id-dependent-backward-branch)
static_cast<unsigned>
(
std::numeric_limits<local_unsigned_integral_type>::digits / static_cast<int>(INT8_C(2))
);
do
{
yy_val = static_cast<local_unsigned_integral_type>(v >> cc_val);
if(yy_val != static_cast<local_unsigned_integral_type>(UINT8_C(0)))
{
nn_val -= cc_val;
v = yy_val;
}
cc_val >>= static_cast<unsigned>(UINT8_C(1));
}
while(cc_val != static_cast<unsigned>(UINT8_C(0))); // NOLINT(altera-id-dependent-backward-branch)
return
static_cast<unsigned>
(
static_cast<unsigned>(nn_val) - static_cast<unsigned>(v)
);
}
template<typename UnsignedIntegralType>
constexpr auto ctz_unsafe(const UnsignedIntegralType v) noexcept -> std::enable_if_t<( (std::is_integral<UnsignedIntegralType>::value)
&& (std::is_unsigned<UnsignedIntegralType>::value)), unsigned>
{
using local_unsigned_integral_type = UnsignedIntegralType;
constexpr auto local_digits = static_cast<unsigned>(std::numeric_limits<local_unsigned_integral_type>::digits);
const auto clz_mask =
static_cast<local_unsigned_integral_type>
(
static_cast<local_unsigned_integral_type>(~v)
& static_cast<local_unsigned_integral_type>(v - static_cast<local_unsigned_integral_type>(UINT8_C(1)))
);
return static_cast<unsigned>(local_digits - clz_unsafe(clz_mask));
}
template<typename UnsignedIntegralType>
constexpr auto gcd_unsafe(UnsignedIntegralType u, UnsignedIntegralType v) -> std::enable_if_t<( (std::is_integral<UnsignedIntegralType>::value) // NOLINT(altera-id-dependent-backward-branch)
&& (std::is_unsigned<UnsignedIntegralType>::value)), UnsignedIntegralType>
{
using local_unsigned_integral_type = UnsignedIntegralType;
// Handle cases having (u != 0) and (v != 0).
if(u == static_cast<local_unsigned_integral_type>(UINT8_C(0))) { return v; }
if(v == static_cast<local_unsigned_integral_type>(UINT8_C(0))) { return u; }
// Shift the greatest power of 2 dividing both u and v.
const auto trz = static_cast<unsigned>(ctz_unsafe(u));
const auto shift_amount = (detail::min_unsafe)(trz, ctz_unsafe(v));
v >>= shift_amount;
u >>= trz;
do
{
// Reduce the GCD.
v >>= ctz_unsafe(v);
if(u > v)
{
swap_unsafe(u, v);
}
v -= u;
}
while(v != static_cast<local_unsigned_integral_type>(UINT8_C(0))); // NOLINT(altera-id-dependent-backward-branch)
return static_cast<local_unsigned_integral_type>(u << shift_amount);
}
namespace array_detail {
template<typename T, std::size_t N>
class array
{
public:
// Standard container-local type definitions.
using size_type = std::size_t;
using difference_type = std::ptrdiff_t;
using value_type = T;
using pointer = T*;
using const_pointer = const T*;
using reference = T&;
using const_reference = const T&;
using iterator = pointer;
using const_iterator = const_pointer;
using reverse_iterator = iterator_detail::reverse_iterator<iterator>;
using const_reverse_iterator = iterator_detail::reverse_iterator<const_iterator>;
value_type elems[N] { }; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays,misc-non-private-member-variables-in-classes)
static constexpr size_type static_size = N;
WIDE_INTEGER_NODISCARD constexpr auto begin() -> iterator { return elems; } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay,cppcoreguidelines-pro-bounds-pointer-arithmetic)
WIDE_INTEGER_NODISCARD constexpr auto end () -> iterator { return elems + N; } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay,cppcoreguidelines-pro-bounds-pointer-arithmetic)
WIDE_INTEGER_NODISCARD constexpr auto begin() const -> const_iterator { return elems; } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay,cppcoreguidelines-pro-bounds-pointer-arithmetic)
WIDE_INTEGER_NODISCARD constexpr auto end () const -> const_iterator { return elems + N; } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay,cppcoreguidelines-pro-bounds-pointer-arithmetic)
WIDE_INTEGER_NODISCARD constexpr auto cbegin() const -> const_iterator { return elems; } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay,cppcoreguidelines-pro-bounds-pointer-arithmetic)
WIDE_INTEGER_NODISCARD constexpr auto cend () const -> const_iterator { return elems + N; } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay,cppcoreguidelines-pro-bounds-pointer-arithmetic)
WIDE_INTEGER_NODISCARD constexpr auto rbegin() -> reverse_iterator { return reverse_iterator(elems + N); } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay,cppcoreguidelines-pro-bounds-pointer-arithmetic)
WIDE_INTEGER_NODISCARD constexpr auto rend () -> reverse_iterator { return reverse_iterator(elems); } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay,cppcoreguidelines-pro-bounds-pointer-arithmetic)
WIDE_INTEGER_NODISCARD constexpr auto rbegin() const -> const_reverse_iterator { return const_reverse_iterator(elems + N); } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay,cppcoreguidelines-pro-bounds-pointer-arithmetic)
WIDE_INTEGER_NODISCARD constexpr auto rend () const -> const_reverse_iterator { return const_reverse_iterator(elems); } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay,cppcoreguidelines-pro-bounds-pointer-arithmetic)
WIDE_INTEGER_NODISCARD constexpr auto crbegin() const -> const_reverse_iterator { return const_reverse_iterator(elems + N); } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay,cppcoreguidelines-pro-bounds-pointer-arithmetic)
WIDE_INTEGER_NODISCARD constexpr auto crend () const -> const_reverse_iterator { return const_reverse_iterator(elems); } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay,cppcoreguidelines-pro-bounds-pointer-arithmetic)
WIDE_INTEGER_NODISCARD constexpr auto operator[](const size_type i) -> reference { return elems[i]; } // NOLINT(cppcoreguidelines-pro-bounds-constant-array-index)
WIDE_INTEGER_NODISCARD constexpr auto operator[](const size_type i) const -> const_reference { return elems[i]; } // NOLINT(cppcoreguidelines-pro-bounds-constant-array-index)
WIDE_INTEGER_NODISCARD constexpr auto at(const size_type i) -> reference { return elems[i]; } // NOLINT(cppcoreguidelines-pro-bounds-constant-array-index)
WIDE_INTEGER_NODISCARD constexpr auto at(const size_type i) const -> const_reference { return elems[i]; } // NOLINT(cppcoreguidelines-pro-bounds-constant-array-index)
WIDE_INTEGER_NODISCARD constexpr auto front() -> reference { return elems[static_cast<size_type>(UINT8_C(0))]; }
WIDE_INTEGER_NODISCARD constexpr auto front() const -> const_reference { return elems[static_cast<size_type>(UINT8_C(0))]; }
WIDE_INTEGER_NODISCARD constexpr auto back() -> reference { return elems[static_cast<size_type>(N - static_cast<size_type>(UINT8_C(1)))]; }
WIDE_INTEGER_NODISCARD constexpr auto back() const -> const_reference { return elems[static_cast<size_type>(N - static_cast<size_type>(UINT8_C(1)))]; }
WIDE_INTEGER_NODISCARD static constexpr auto size() -> size_type { return N; }
WIDE_INTEGER_NODISCARD static constexpr auto empty() -> bool { return false; }
WIDE_INTEGER_NODISCARD static constexpr auto max_size() -> size_type { return N; }
template<typename T2>
constexpr auto swap(array<T2, N>& y) noexcept -> void
{
swap_ranges_unsafe(begin(), end(), y.begin());
}
WIDE_INTEGER_NODISCARD constexpr auto data() const -> const_pointer { return elems; } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay)
WIDE_INTEGER_NODISCARD constexpr auto data() -> pointer { return elems; } // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay)
WIDE_INTEGER_NODISCARD constexpr auto c_array() -> pointer { return elems; }
template<typename T2>
constexpr auto operator=(const array<T2, N>& y) -> array&
{
copy_unsafe(y.begin(), y.end(), begin());
return *this;
}
constexpr auto assign(const value_type& value) -> void
{
fill_unsafe(elems, elems + N, value); // NOLINT(cppcoreguidelines-pro-bounds-array-to-pointer-decay,hicpp-no-array-decay,cppcoreguidelines-pro-bounds-pointer-arithmetic)
}
constexpr auto fill(const value_type& value) -> void
{
assign(value);
}
};
template<typename T, size_t N>
constexpr auto operator==(const array<T, N>& left, const array<T, N>& right) -> bool
{
return equal_unsafe(left.begin(), left.end(), right.begin());
}
template<typename T, size_t N>
constexpr auto operator<(const array<T, N>& left, const array<T, N>& right) -> bool
{
return lexicographical_compare_unsafe(left.begin(),
left.end(),
right.begin(),
right.end());
}
template<typename T, size_t N>
constexpr auto operator!=(const array<T, N>& left, const array<T, N>& right) -> bool
{
return (!(left == right));
}
template<typename T, size_t N>
constexpr auto operator>(const array<T, N>& left, const array<T, N>& right) -> bool
{
return (right < left);
}
template<typename T, size_t N>
constexpr auto operator>=(const array<T, N>& left, const array<T, N>& right) -> bool
{
return (!(left < right));
}
template<typename T, size_t N>
constexpr auto operator<=(const array<T, N>& left, const array<T, N>& right) -> bool
{
return (!(right < left));
}
template<typename T, size_t N >
constexpr auto swap(array<T, N>& x, array<T, N>& y) noexcept -> void
{
swap_ranges_unsafe(x.begin(), x.end(), y.begin());
}
template<typename T>
class tuple_size;
template<typename T, typename std::size_t N>
class tuple_size<array<T, N>> : public std::integral_constant<std::size_t, N> { };
template<const std::size_t N, typename T>
class tuple_element;
template<const std::size_t I,
typename T,
const std::size_t N>
class tuple_element<I, array<T, N> >
{
static_assert(I < N, "Sorry, tuple_element index is out of bounds.");
using type = T;
};
} // namespace array_detail
#if(__cplusplus >= 201703L)
} // namespace math::wide_integer::detail
#else
} // namespace detail
} // namespace wide_integer
} // namespace math
#endif
WIDE_INTEGER_NAMESPACE_END
#if !defined(WIDE_INTEGER_DISABLE_IMPLEMENT_UTIL_DYNAMIC_ARRAY)
WIDE_INTEGER_NAMESPACE_BEGIN
namespace util {
template<typename ValueType,
typename AllocatorType = std::allocator<ValueType>,
typename SizeType = std::size_t,
typename DiffType = std::ptrdiff_t>
class dynamic_array;
template<typename ValueType,
typename AllocatorType,
typename SizeType,
typename DiffType>
class dynamic_array
{
public:
// Type definitions.
using allocator_type = typename std::allocator_traits<AllocatorType>::template rebind_alloc<ValueType>;
using value_type = typename allocator_type::value_type;
using reference = value_type&;
using const_reference = const value_type&;
using iterator = value_type*;
using const_iterator = const value_type*;
using pointer = value_type*;
using const_pointer = const value_type*;
using size_type = SizeType;
using difference_type = DiffType;
#if defined(WIDE_INTEGER_NAMESPACE)
using reverse_iterator = WIDE_INTEGER_NAMESPACE::math::wide_integer::detail::iterator_detail::reverse_iterator< value_type*>;
using const_reverse_iterator = WIDE_INTEGER_NAMESPACE::math::wide_integer::detail::iterator_detail::reverse_iterator<const value_type*>;
#else
using reverse_iterator = ::math::wide_integer::detail::iterator_detail::reverse_iterator< value_type*>;
using const_reverse_iterator = ::math::wide_integer::detail::iterator_detail::reverse_iterator<const value_type*>;
#endif
// Constructors.
constexpr dynamic_array() = delete;
explicit constexpr dynamic_array( size_type count_in,
const_reference value_in = value_type(),
const allocator_type& alloc_in = allocator_type())
: elem_count(count_in)
{
if(elem_count > static_cast<size_type>(UINT8_C(0)))
{
allocator_type my_alloc(alloc_in);
elems = std::allocator_traits<allocator_type>::allocate(my_alloc, elem_count);
iterator it = begin();
while(it != end())
{
std::allocator_traits<allocator_type>::construct(my_alloc, it, value_in);
++it;
}
}
}
constexpr dynamic_array(const dynamic_array& other)
: elem_count(other.size())
{
allocator_type my_alloc;
if(elem_count > static_cast<size_type>(UINT8_C(0)))
{
elems = std::allocator_traits<allocator_type>::allocate(my_alloc, elem_count);
}
#if defined(WIDE_INTEGER_NAMESPACE)
WIDE_INTEGER_NAMESPACE::math::wide_integer::detail::copy_unsafe(other.elems, other.elems + elem_count, elems);
#else
::math::wide_integer::detail::copy_unsafe(other.elems, other.elems + elem_count, elems);
#endif
}
template<typename input_iterator>
constexpr dynamic_array(input_iterator first,
input_iterator last,
const allocator_type& alloc_in = allocator_type())
: elem_count(static_cast<size_type>(last - first))
{
allocator_type my_alloc(alloc_in);
if(elem_count > static_cast<size_type>(UINT8_C(0)))
{
elems = std::allocator_traits<allocator_type>::allocate(my_alloc, elem_count);
}
#if defined(WIDE_INTEGER_NAMESPACE)
WIDE_INTEGER_NAMESPACE::math::wide_integer::detail::copy_unsafe(first, last, elems);
#else
::math::wide_integer::detail::copy_unsafe(first, last, elems);
#endif
}
constexpr dynamic_array(std::initializer_list<value_type> lst,
const allocator_type& alloc_in = allocator_type())
: elem_count(lst.size())
{
allocator_type my_alloc(alloc_in);
if(elem_count > static_cast<size_type>(UINT8_C(0)))
{
elems = std::allocator_traits<allocator_type>::allocate(my_alloc, elem_count);
}
#if defined(WIDE_INTEGER_NAMESPACE)
WIDE_INTEGER_NAMESPACE::math::wide_integer::detail::copy_unsafe(lst.begin(), lst.end(), elems);
#else
::math::wide_integer::detail::copy_unsafe(lst.begin(), lst.end(), elems);
#endif
}
// Move constructor.
constexpr dynamic_array(dynamic_array&& other) noexcept : elem_count(other.elem_count),
elems (other.elems)
{
other.elem_count = static_cast<size_type>(UINT8_C(0));
other.elems = nullptr;
}
// Destructor.
//constexpr
virtual ~dynamic_array()
{
if(!empty())
{
using local_allocator_traits_type = std::allocator_traits<allocator_type>;
allocator_type my_alloc;
auto p = begin(); // NOLINT(llvm-qualified-auto,readability-qualified-auto)
while(p != end())
{
local_allocator_traits_type::destroy(my_alloc, p);
++p;
}
// Destroy the elements and deallocate the range.
local_allocator_traits_type::deallocate(my_alloc, elems, elem_count);
}
}
// Assignment operator.
constexpr auto operator=(const dynamic_array& other) -> dynamic_array&
{
if(this != &other)
{
#if defined(WIDE_INTEGER_NAMESPACE)
WIDE_INTEGER_NAMESPACE::math::wide_integer::detail::copy_unsafe(other.elems,
other.elems + WIDE_INTEGER_NAMESPACE::math::wide_integer::detail::min_unsafe(elem_count, other.elem_count),
elems);
#else
::math::wide_integer::detail::copy_unsafe(other.elems,
other.elems + ::math::wide_integer::detail::min_unsafe(elem_count, other.elem_count),
elems);
#endif
}
return *this;
}
// Move assignment operator.
constexpr auto operator=(dynamic_array&& other) noexcept -> dynamic_array&
{
#if defined(WIDE_INTEGER_NAMESPACE)
WIDE_INTEGER_NAMESPACE::math::wide_integer::detail::swap_unsafe(elem_count, other.elem_count);
WIDE_INTEGER_NAMESPACE::math::wide_integer::detail::swap_unsafe(elems, other.elems);
#else
::math::wide_integer::detail::swap_unsafe(elem_count, other.elem_count);
::math::wide_integer::detail::swap_unsafe(elems, other.elems);
#endif
return *this;
}
// Iterator members:
constexpr auto begin () -> iterator { return elems; }
constexpr auto end () -> iterator { return elems + elem_count; }
constexpr auto begin () const -> const_iterator { return elems; }
constexpr auto end () const -> const_iterator { return elems + elem_count; }
constexpr auto cbegin () const -> const_iterator { return elems; }
constexpr auto cend () const -> const_iterator { return elems + elem_count; }
constexpr auto rbegin () -> reverse_iterator { return reverse_iterator(elems + elem_count); }
constexpr auto rend () -> reverse_iterator { return reverse_iterator(elems); }
constexpr auto rbegin () const -> const_reverse_iterator { return const_reverse_iterator(elems + elem_count); }
constexpr auto rend () const -> const_reverse_iterator { return const_reverse_iterator(elems); }
constexpr auto crbegin() const -> const_reverse_iterator { return const_reverse_iterator(elems + elem_count); }
constexpr auto crend () const -> const_reverse_iterator { return const_reverse_iterator(elems); }
// Raw pointer access.
constexpr auto data() -> pointer { return elems; }
constexpr auto data() const -> const_pointer { return elems; }
// Size and capacity.
constexpr auto size () const -> size_type { return elem_count; }
constexpr auto max_size() const -> size_type { return elem_count; }
constexpr auto empty () const -> bool { return (elem_count == static_cast<size_type>(UINT8_C(0))); }
// Element access members.
constexpr auto operator[](const size_type i) -> reference { return elems[i]; }
constexpr auto operator[](const size_type i) const -> const_reference { return elems[i]; }
constexpr auto front() -> reference { return elems[static_cast<size_type>(UINT8_C(0))]; }
constexpr auto front() const -> const_reference { return elems[static_cast<size_type>(UINT8_C(0))]; }
constexpr auto back() -> reference { return ((elem_count > static_cast<size_type>(UINT8_C(0))) ? elems[static_cast<size_type>(elem_count - static_cast<size_type>(UINT8_C(1)))] : elems[static_cast<size_type>(UINT8_C(0))]); }
constexpr auto back() const -> const_reference { return ((elem_count > static_cast<size_type>(UINT8_C(0))) ? elems[static_cast<size_type>(elem_count - static_cast<size_type>(UINT8_C(1)))] : elems[static_cast<size_type>(UINT8_C(0))]); }
constexpr auto at(const size_type i) -> reference { return ((i < elem_count) ? elems[i] : elems[static_cast<size_type>(UINT8_C(0))]); }
constexpr auto at(const size_type i) const -> const_reference { return ((i < elem_count) ? elems[i] : elems[static_cast<size_type>(UINT8_C(0))]); }
// Element manipulation members.
constexpr auto fill(const value_type& value_in) -> void
{
#if defined(WIDE_INTEGER_NAMESPACE)
WIDE_INTEGER_NAMESPACE::math::wide_integer::detail::fill_unsafe(begin(), begin() + elem_count, value_in);
#else
::math::wide_integer::detail::fill_unsafe(begin(), begin() + elem_count, value_in);
#endif
}
constexpr auto swap(dynamic_array& other) noexcept -> void
{
if(this != &other)
{
#if defined(WIDE_INTEGER_NAMESPACE)
WIDE_INTEGER_NAMESPACE::math::wide_integer::detail::swap_unsafe(elems, other.elems);
WIDE_INTEGER_NAMESPACE::math::wide_integer::detail::swap_unsafe(elem_count, other.elem_count);
#else
::math::wide_integer::detail::swap_unsafe(elems, other.elems);
::math::wide_integer::detail::swap_unsafe(elem_count, other.elem_count);
#endif
}
}
constexpr auto swap(dynamic_array&& other) noexcept -> void
{
const auto tmp = std::move(*this);
*this = std::move(other);
other = std::move(tmp);
}
private:
mutable size_type elem_count; // NOLINT(readability-identifier-naming)
pointer elems { nullptr }; // NOLINT(readability-identifier-naming,altera-id-dependent-backward-branch)
};
template<typename ValueType, typename AllocatorType>
constexpr auto operator==(const dynamic_array<ValueType, AllocatorType>& lhs,
const dynamic_array<ValueType, AllocatorType>& rhs) -> bool
{
using local_size_type = typename dynamic_array<ValueType, AllocatorType>::size_type;
return
(
(lhs.size() == rhs.size())
&& (
(lhs.size() == static_cast<local_size_type>(UINT8_C(0)))
|| std::equal(lhs.cbegin(), lhs.cend(), rhs.cbegin())
)
);
}
template<typename ValueType, typename AllocatorType>
constexpr auto operator<(const dynamic_array<ValueType, AllocatorType>& lhs,
const dynamic_array<ValueType, AllocatorType>& rhs) -> bool
{
using size_type = typename dynamic_array<ValueType, AllocatorType>::size_type;
const auto size_of_left_is_zero = (lhs.size() == static_cast<size_type>(UINT8_C(0)));
bool b_result { };
if(size_of_left_is_zero)
{
const auto size_of_right_is_zero = (rhs.size() == static_cast<size_type>(UINT8_C(0)));
b_result = (!size_of_right_is_zero);
}
else
{
if(size_of_left_is_zero)
{
const auto size_of_right_is_zero = (rhs.size() == static_cast<size_type>(UINT8_C(0)));
b_result = (!size_of_right_is_zero);
}
else
{
const size_type my_count = min_unsafe(lhs.size(), rhs.size());