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Make std::bit_cast hack-implementation constexpr in simple cases

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Eladash 2020-06-26 06:45:05 +03:00 • committed by Ivan
parent 07a44d0ff9
commit 58e2465369
2 changed files with 37 additions and 32 deletions
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5
Utilities/types.h
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@ -94,6 +94,11 @@ namespace std
{
static_assert(sizeof(To) == sizeof(From), "std::bit_cast<>: incompatible type size");
if constexpr (std::is_same_v<std::remove_const_t<To>, std::remove_const_t<From>> || (std::is_integral_v<From> && std::is_integral_v<To>))
{
return static_cast<To>(from);
}
To result{};
std::memcpy(&result, &from, sizeof(From));
return result;