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[cityhash] Cleanup

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This commit is contained in:
Gary Talent 2024-05-02 22:20:01 -05:00
parent 1a8afa1a98
commit 59aa4ad21a
1 changed files with 36 additions and 18 deletions
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54
deps/ox/deps/cityhash/include/cityhash/city.h vendored
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@ -100,27 +100,52 @@ typedef uint32_t uintptr_t;
#error intptr_t, and uintptr_t undefined
#endif
#endif
using size_t = decltype(alignof(int));
#if __has_include(<utility>)
#include <utility>
#endif
namespace cityhash::detail {
template<typename T>
struct remove_reference {
using type = T;
};
template<typename T>
struct remove_reference<T&> {
using type = T;
};
template<typename T>
struct remove_reference<T&&> {
using type = T;
};
template<typename T>
using remove_reference_t = typename remove_reference<T>::type;
template<typename T>
constexpr remove_reference_t<T> &&move(T &&t) noexcept {
return static_cast<remove_reference_t<T>&&>(t);
}
template<typename T>
using remove_reference_t = typename remove_reference<T>::type;
template<typename T1, typename T2>
struct pair {
T1 first{};
T2 second{};
constexpr pair() noexcept = default;
constexpr pair(T1 a, T2 b) noexcept: first(std::move(a)), second(std::move(b)) {}
constexpr pair(T1 a, T2 b) noexcept: first(detail::move(a)), second(detail::move(b)) {}
};
template<typename T>
constexpr void swap(T &a, T &b) noexcept {
auto temp = detail::move(a);
a = detail::move(b);
b = detail::move(temp);
}
}
namespace cityhash {
@ -129,13 +154,6 @@ using uint128 = cityhash::detail::pair<uint64_t, uint64_t>;
namespace detail {
template<typename T>
constexpr void swap(T &a, T &b) noexcept {
auto temp = std::move(a);
a = std::move(b);
b = std::move(temp);
}
template<typename T>
[[nodiscard]]
constexpr T byteSwap(T i) noexcept {
@ -290,7 +308,7 @@ constexpr uint32_t Hash32Len0to4(const char *s, size_t len) noexcept {
uint32_t b = 0;
uint32_t c = 9;
for (size_t i = 0; i < len; i++) {
signed char v = static_cast<signed char>(s[i]);
auto const v = static_cast<signed char>(s[i]);
b = b * detail::c1 + static_cast<uint32_t>(v);
c ^= b;
}