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308 lines
12 KiB
308 lines
12 KiB
#ifndef STD_COMPARE_H
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#define STD_COMPARE_H
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namespace std {
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inline namespace __1 {
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// exposition only
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enum class _EqResult : unsigned char {
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__equal = 0,
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__equiv = __equal,
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};
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enum class _OrdResult : signed char {
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__less = -1,
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__greater = 1
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};
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enum class _NCmpResult : signed char {
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__unordered = -127
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};
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struct _CmpUnspecifiedType;
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using _CmpUnspecifiedParam = void (_CmpUnspecifiedType::*)();
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class partial_ordering {
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using _ValueT = signed char;
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explicit constexpr partial_ordering(_EqResult __v) noexcept
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: __value_(_ValueT(__v)) {}
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explicit constexpr partial_ordering(_OrdResult __v) noexcept
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: __value_(_ValueT(__v)) {}
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explicit constexpr partial_ordering(_NCmpResult __v) noexcept
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: __value_(_ValueT(__v)) {}
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constexpr bool __is_ordered() const noexcept {
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return __value_ != _ValueT(_NCmpResult::__unordered);
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}
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public:
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// valid values
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static const partial_ordering less;
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static const partial_ordering equivalent;
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static const partial_ordering greater;
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static const partial_ordering unordered;
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// comparisons
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friend constexpr bool operator==(partial_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator!=(partial_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator<(partial_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator<=(partial_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator>(partial_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator>=(partial_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator==(_CmpUnspecifiedParam, partial_ordering __v) noexcept;
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friend constexpr bool operator!=(_CmpUnspecifiedParam, partial_ordering __v) noexcept;
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friend constexpr bool operator<(_CmpUnspecifiedParam, partial_ordering __v) noexcept;
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friend constexpr bool operator<=(_CmpUnspecifiedParam, partial_ordering __v) noexcept;
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friend constexpr bool operator>(_CmpUnspecifiedParam, partial_ordering __v) noexcept;
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friend constexpr bool operator>=(_CmpUnspecifiedParam, partial_ordering __v) noexcept;
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friend constexpr partial_ordering operator<=>(partial_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr partial_ordering operator<=>(_CmpUnspecifiedParam, partial_ordering __v) noexcept;
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// test helper
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constexpr bool test_eq(partial_ordering const &other) const noexcept {
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return __value_ == other.__value_;
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}
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private:
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_ValueT __value_;
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};
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inline constexpr partial_ordering partial_ordering::less(_OrdResult::__less);
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inline constexpr partial_ordering partial_ordering::equivalent(_EqResult::__equiv);
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inline constexpr partial_ordering partial_ordering::greater(_OrdResult::__greater);
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inline constexpr partial_ordering partial_ordering::unordered(_NCmpResult ::__unordered);
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constexpr bool operator==(partial_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__is_ordered() && __v.__value_ == 0;
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}
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constexpr bool operator<(partial_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__is_ordered() && __v.__value_ < 0;
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}
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constexpr bool operator<=(partial_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__is_ordered() && __v.__value_ <= 0;
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}
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constexpr bool operator>(partial_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__is_ordered() && __v.__value_ > 0;
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}
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constexpr bool operator>=(partial_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__is_ordered() && __v.__value_ >= 0;
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}
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constexpr bool operator==(_CmpUnspecifiedParam, partial_ordering __v) noexcept {
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return __v.__is_ordered() && 0 == __v.__value_;
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}
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constexpr bool operator<(_CmpUnspecifiedParam, partial_ordering __v) noexcept {
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return __v.__is_ordered() && 0 < __v.__value_;
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}
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constexpr bool operator<=(_CmpUnspecifiedParam, partial_ordering __v) noexcept {
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return __v.__is_ordered() && 0 <= __v.__value_;
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}
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constexpr bool operator>(_CmpUnspecifiedParam, partial_ordering __v) noexcept {
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return __v.__is_ordered() && 0 > __v.__value_;
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}
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constexpr bool operator>=(_CmpUnspecifiedParam, partial_ordering __v) noexcept {
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return __v.__is_ordered() && 0 >= __v.__value_;
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}
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constexpr bool operator!=(partial_ordering __v, _CmpUnspecifiedParam) noexcept {
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return !__v.__is_ordered() || __v.__value_ != 0;
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}
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constexpr bool operator!=(_CmpUnspecifiedParam, partial_ordering __v) noexcept {
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return !__v.__is_ordered() || __v.__value_ != 0;
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}
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constexpr partial_ordering operator<=>(partial_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v;
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}
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constexpr partial_ordering operator<=>(_CmpUnspecifiedParam, partial_ordering __v) noexcept {
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return __v < 0 ? partial_ordering::greater : (__v > 0 ? partial_ordering::less : __v);
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}
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class weak_ordering {
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using _ValueT = signed char;
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explicit constexpr weak_ordering(_EqResult __v) noexcept : __value_(_ValueT(__v)) {}
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explicit constexpr weak_ordering(_OrdResult __v) noexcept : __value_(_ValueT(__v)) {}
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public:
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static const weak_ordering less;
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static const weak_ordering equivalent;
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static const weak_ordering greater;
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// conversions
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constexpr operator partial_ordering() const noexcept {
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return __value_ == 0 ? partial_ordering::equivalent
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: (__value_ < 0 ? partial_ordering::less : partial_ordering::greater);
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}
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// comparisons
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friend constexpr bool operator==(weak_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator!=(weak_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator<(weak_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator<=(weak_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator>(weak_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator>=(weak_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator==(_CmpUnspecifiedParam, weak_ordering __v) noexcept;
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friend constexpr bool operator!=(_CmpUnspecifiedParam, weak_ordering __v) noexcept;
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friend constexpr bool operator<(_CmpUnspecifiedParam, weak_ordering __v) noexcept;
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friend constexpr bool operator<=(_CmpUnspecifiedParam, weak_ordering __v) noexcept;
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friend constexpr bool operator>(_CmpUnspecifiedParam, weak_ordering __v) noexcept;
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friend constexpr bool operator>=(_CmpUnspecifiedParam, weak_ordering __v) noexcept;
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friend constexpr weak_ordering operator<=>(weak_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr weak_ordering operator<=>(_CmpUnspecifiedParam, weak_ordering __v) noexcept;
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// test helper
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constexpr bool test_eq(weak_ordering const &other) const noexcept {
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return __value_ == other.__value_;
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}
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private:
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_ValueT __value_;
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};
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inline constexpr weak_ordering weak_ordering::less(_OrdResult::__less);
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inline constexpr weak_ordering weak_ordering::equivalent(_EqResult::__equiv);
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inline constexpr weak_ordering weak_ordering::greater(_OrdResult::__greater);
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constexpr bool operator==(weak_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__value_ == 0;
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}
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constexpr bool operator!=(weak_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__value_ != 0;
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}
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constexpr bool operator<(weak_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__value_ < 0;
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}
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constexpr bool operator<=(weak_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__value_ <= 0;
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}
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constexpr bool operator>(weak_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__value_ > 0;
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}
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constexpr bool operator>=(weak_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__value_ >= 0;
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}
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constexpr bool operator==(_CmpUnspecifiedParam, weak_ordering __v) noexcept {
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return 0 == __v.__value_;
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}
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constexpr bool operator!=(_CmpUnspecifiedParam, weak_ordering __v) noexcept {
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return 0 != __v.__value_;
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}
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constexpr bool operator<(_CmpUnspecifiedParam, weak_ordering __v) noexcept {
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return 0 < __v.__value_;
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}
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constexpr bool operator<=(_CmpUnspecifiedParam, weak_ordering __v) noexcept {
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return 0 <= __v.__value_;
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}
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constexpr bool operator>(_CmpUnspecifiedParam, weak_ordering __v) noexcept {
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return 0 > __v.__value_;
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}
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constexpr bool operator>=(_CmpUnspecifiedParam, weak_ordering __v) noexcept {
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return 0 >= __v.__value_;
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}
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constexpr weak_ordering operator<=>(weak_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v;
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}
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constexpr weak_ordering operator<=>(_CmpUnspecifiedParam, weak_ordering __v) noexcept {
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return __v < 0 ? weak_ordering::greater : (__v > 0 ? weak_ordering::less : __v);
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}
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class strong_ordering {
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using _ValueT = signed char;
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explicit constexpr strong_ordering(_EqResult __v) noexcept : __value_(static_cast<signed char>(__v)) {}
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explicit constexpr strong_ordering(_OrdResult __v) noexcept : __value_(static_cast<signed char>(__v)) {}
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public:
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static const strong_ordering less;
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static const strong_ordering equal;
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static const strong_ordering equivalent;
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static const strong_ordering greater;
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// conversions
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constexpr operator partial_ordering() const noexcept {
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return __value_ == 0 ? partial_ordering::equivalent
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: (__value_ < 0 ? partial_ordering::less : partial_ordering::greater);
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}
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constexpr operator weak_ordering() const noexcept {
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return __value_ == 0 ? weak_ordering::equivalent
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: (__value_ < 0 ? weak_ordering::less : weak_ordering::greater);
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}
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// comparisons
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friend constexpr bool operator==(strong_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator!=(strong_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator<(strong_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator<=(strong_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator>(strong_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator>=(strong_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr bool operator==(_CmpUnspecifiedParam, strong_ordering __v) noexcept;
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friend constexpr bool operator!=(_CmpUnspecifiedParam, strong_ordering __v) noexcept;
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friend constexpr bool operator<(_CmpUnspecifiedParam, strong_ordering __v) noexcept;
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friend constexpr bool operator<=(_CmpUnspecifiedParam, strong_ordering __v) noexcept;
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friend constexpr bool operator>(_CmpUnspecifiedParam, strong_ordering __v) noexcept;
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friend constexpr bool operator>=(_CmpUnspecifiedParam, strong_ordering __v) noexcept;
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friend constexpr strong_ordering operator<=>(strong_ordering __v, _CmpUnspecifiedParam) noexcept;
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friend constexpr strong_ordering operator<=>(_CmpUnspecifiedParam, strong_ordering __v) noexcept;
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// test helper
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constexpr bool test_eq(strong_ordering const &other) const noexcept {
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return __value_ == other.__value_;
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}
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private:
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_ValueT __value_;
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};
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inline constexpr strong_ordering strong_ordering::less(_OrdResult::__less);
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inline constexpr strong_ordering strong_ordering::equal(_EqResult::__equal);
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inline constexpr strong_ordering strong_ordering::equivalent(_EqResult::__equiv);
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inline constexpr strong_ordering strong_ordering::greater(_OrdResult::__greater);
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constexpr bool operator==(strong_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__value_ == 0;
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}
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constexpr bool operator!=(strong_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__value_ != 0;
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}
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constexpr bool operator<(strong_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__value_ < 0;
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}
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constexpr bool operator<=(strong_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__value_ <= 0;
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}
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constexpr bool operator>(strong_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__value_ > 0;
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}
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constexpr bool operator>=(strong_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v.__value_ >= 0;
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}
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constexpr bool operator==(_CmpUnspecifiedParam, strong_ordering __v) noexcept {
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return 0 == __v.__value_;
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}
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constexpr bool operator!=(_CmpUnspecifiedParam, strong_ordering __v) noexcept {
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return 0 != __v.__value_;
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}
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constexpr bool operator<(_CmpUnspecifiedParam, strong_ordering __v) noexcept {
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return 0 < __v.__value_;
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}
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constexpr bool operator<=(_CmpUnspecifiedParam, strong_ordering __v) noexcept {
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return 0 <= __v.__value_;
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}
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constexpr bool operator>(_CmpUnspecifiedParam, strong_ordering __v) noexcept {
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return 0 > __v.__value_;
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}
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constexpr bool operator>=(_CmpUnspecifiedParam, strong_ordering __v) noexcept {
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return 0 >= __v.__value_;
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}
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constexpr strong_ordering operator<=>(strong_ordering __v, _CmpUnspecifiedParam) noexcept {
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return __v;
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}
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constexpr strong_ordering operator<=>(_CmpUnspecifiedParam, strong_ordering __v) noexcept {
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return __v < 0 ? strong_ordering::greater : (__v > 0 ? strong_ordering::less : __v);
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}
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} // namespace __1
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} // end namespace std
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#endif // STD_COMPARE_H
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