mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-29 05:00:47 +00:00
135 lines
3.6 KiB
C++
135 lines
3.6 KiB
C++
#pragma once
|
|
|
|
#include <algorithm>
|
|
#include <cstdint>
|
|
#include <cstdlib>
|
|
#include <string>
|
|
#include <type_traits>
|
|
|
|
#include <common/wide_integer.h>
|
|
|
|
using Int8 = int8_t;
|
|
using Int16 = int16_t;
|
|
using Int32 = int32_t;
|
|
using Int64 = int64_t;
|
|
|
|
#if __cplusplus <= 201703L
|
|
using char8_t = unsigned char;
|
|
#endif
|
|
|
|
/// This is needed for more strict aliasing. https://godbolt.org/z/xpJBSb https://stackoverflow.com/a/57453713
|
|
using UInt8 = char8_t;
|
|
using UInt16 = uint16_t;
|
|
using UInt32 = uint32_t;
|
|
using UInt64 = uint64_t;
|
|
|
|
using Int128 = __int128;
|
|
|
|
using wInt256 = std::wide_integer<256, signed>;
|
|
using wUInt256 = std::wide_integer<256, unsigned>;
|
|
|
|
static_assert(sizeof(wInt256) == 32);
|
|
static_assert(sizeof(wUInt256) == 32);
|
|
|
|
using String = std::string;
|
|
|
|
/// The standard library type traits, such as std::is_arithmetic, with one exception
|
|
/// (std::common_type), are "set in stone". Attempting to specialize them causes undefined behavior.
|
|
/// So instead of using the std type_traits, we use our own version which allows extension.
|
|
template <typename T>
|
|
struct is_signed
|
|
{
|
|
static constexpr bool value = std::is_signed_v<T>;
|
|
};
|
|
|
|
template <> struct is_signed<Int128> { static constexpr bool value = true; };
|
|
template <> struct is_signed<wInt256> { static constexpr bool value = true; };
|
|
|
|
template <typename T>
|
|
inline constexpr bool is_signed_v = is_signed<T>::value;
|
|
|
|
template <typename T>
|
|
struct is_unsigned
|
|
{
|
|
static constexpr bool value = std::is_unsigned_v<T>;
|
|
};
|
|
|
|
template <> struct is_unsigned<wUInt256> { static constexpr bool value = true; };
|
|
|
|
template <typename T>
|
|
inline constexpr bool is_unsigned_v = is_unsigned<T>::value;
|
|
|
|
|
|
/// TODO: is_integral includes char, char8_t and wchar_t.
|
|
template <typename T>
|
|
struct is_integer
|
|
{
|
|
static constexpr bool value = std::is_integral_v<T>;
|
|
};
|
|
|
|
template <> struct is_integer<Int128> { static constexpr bool value = true; };
|
|
template <> struct is_integer<wInt256> { static constexpr bool value = true; };
|
|
template <> struct is_integer<wUInt256> { static constexpr bool value = true; };
|
|
|
|
template <typename T>
|
|
inline constexpr bool is_integer_v = is_integer<T>::value;
|
|
|
|
|
|
template <typename T>
|
|
struct is_arithmetic
|
|
{
|
|
static constexpr bool value = std::is_arithmetic_v<T>;
|
|
};
|
|
|
|
template <> struct is_arithmetic<__int128> { static constexpr bool value = true; };
|
|
|
|
template <typename T>
|
|
inline constexpr bool is_arithmetic_v = is_arithmetic<T>::value;
|
|
|
|
template <typename T>
|
|
struct make_unsigned
|
|
{
|
|
typedef std::make_unsigned_t<T> type;
|
|
};
|
|
|
|
template <> struct make_unsigned<Int128> { using type = unsigned __int128; };
|
|
template <> struct make_unsigned<wInt256> { using type = wUInt256; };
|
|
template <> struct make_unsigned<wUInt256> { using type = wUInt256; };
|
|
|
|
template <typename T> using make_unsigned_t = typename make_unsigned<T>::type;
|
|
|
|
template <typename T>
|
|
struct make_signed
|
|
{
|
|
typedef std::make_signed_t<T> type;
|
|
};
|
|
|
|
template <> struct make_signed<wInt256> { using type = wInt256; };
|
|
template <> struct make_signed<wUInt256> { using type = wInt256; };
|
|
|
|
template <typename T> using make_signed_t = typename make_signed<T>::type;
|
|
|
|
template <typename T>
|
|
struct is_big_int
|
|
{
|
|
static constexpr bool value = false;
|
|
};
|
|
|
|
template <> struct is_big_int<wInt256> { static constexpr bool value = true; };
|
|
template <> struct is_big_int<wUInt256> { static constexpr bool value = true; };
|
|
|
|
template <typename T>
|
|
inline constexpr bool is_big_int_v = is_big_int<T>::value;
|
|
|
|
template <typename T>
|
|
inline std::string bigintToString(const T & x)
|
|
{
|
|
return to_string(x);
|
|
}
|
|
|
|
template <typename To, typename From>
|
|
inline To bigint_cast(const From & x [[maybe_unused]])
|
|
{
|
|
return static_cast<To>(x);
|
|
}
|