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Add helper wrappers similar to std::bit_cast which support size mismatches

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Jonathan G Rennison
2024-06-19 19:50:48 +01:00
parent e2dc3a9ac4
commit 1b228b24a5
1 changed files with 24 additions and 0 deletions
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24
src/core/bit_cast.hpp
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@@ -32,4 +32,28 @@ constexpr To bit_cast(const From& from) noexcept
#endif
template <typename To, typename From>
constexpr To bit_cast_to_storage(const From& from) noexcept
{
static_assert(std::is_trivially_constructible_v<To>);
static_assert(std::is_trivially_copyable_v<From>);
static_assert(sizeof(To) >= sizeof(From));
To to{};
memcpy(&to, &from, sizeof(From));
return to;
}
template <typename To, typename From>
constexpr To bit_cast_from_storage(const From& from) noexcept
{
static_assert(std::is_trivially_constructible_v<To>);
static_assert(std::is_trivially_copyable_v<From>);
static_assert(sizeof(To) <= sizeof(From));
To to{};
memcpy(&to, &from, sizeof(To));
return to;
}
#endif /* BIT_CAST_HPP */