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Move operator== into the class #320

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Sep 2, 2024
Merged

Move operator== into the class #320

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57 changes: 8 additions & 49 deletions include/intx/intx.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -972,58 +972,17 @@ struct uint
}

inline constexpr uint& operator^=(const uint& y) noexcept { return *this = *this ^ y; }

friend inline constexpr bool operator==(const uint& x, const uint& y) noexcept
{
uint64_t folded = 0;
for (size_t i = 0; i < num_words; ++i)
folded |= (x[i] ^ y[i]);
return folded == 0;
}
};

using uint192 = uint<192>;
using uint256 = uint<256>;
using uint320 = uint<320>;
using uint384 = uint<384>;
using uint448 = uint<448>;
using uint512 = uint<512>;

template <unsigned N>
inline constexpr bool operator==(const uint<N>& x, const uint<N>& y) noexcept
{
uint64_t folded = 0;
for (size_t i = 0; i < uint<N>::num_words; ++i)
folded |= (x[i] ^ y[i]);
return folded == 0;
}

template <unsigned N, typename T>
inline constexpr bool operator==(const uint<N>& x, const T& y) noexcept
requires std::is_convertible_v<T, uint<N>>
{
return x == uint<N>(y);
}

template <unsigned N, typename T>
inline constexpr bool operator==(const T& x, const uint<N>& y) noexcept
requires std::is_convertible_v<T, uint<N>>
{
return uint<N>(y) == x;
}


template <unsigned N>
inline constexpr bool operator!=(const uint<N>& x, const uint<N>& y) noexcept
{
return !(x == y);
}

template <unsigned N, typename T>
inline constexpr bool operator!=(const uint<N>& x, const T& y) noexcept
requires std::is_convertible_v<T, uint<N>>
{
return x != uint<N>(y);
}

template <unsigned N, typename T>
inline constexpr bool operator!=(const T& x, const uint<N>& y) noexcept
requires std::is_convertible_v<T, uint<N>>
{
return uint<N>(x) != y;
}

inline constexpr bool operator<(const uint256& x, const uint256& y) noexcept
{
Expand Down