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Avoid impossible clamps.

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This commit is contained in:
Thomas Harte 2024-09-21 21:25:49 -04:00
parent ff6753fcdf
commit 9abd653fb9
1 changed files with 13 additions and 0 deletions
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13
ClockReceiver/ClockReceiver.hpp
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@ -140,6 +140,19 @@ template <class T> class WrappedInt {
/// @returns The underlying int, converted to an integral type of your choosing, clamped to that int's range.
template<typename Type = IntType> forceinline constexpr Type as() const {
if constexpr (sizeof(Type) == sizeof(IntType)) {
if constexpr (std::is_same_v<Type, IntType>) {
return length_;
} else if constexpr (std::is_signed_v<Type>) {
// Both integers are the same size, but a signed result is being asked for
// from an unsigned original.
return length_ > Type(std::numeric_limits<Type>::max()) ? Type(std::numeric_limits<Type>::max()) : Type(length_);
} else {
// An unsigned result is being asked for from a signed original.
return length_ < 0 ? 0 : Type(length_);
}
}
const auto clamped = std::clamp(length_, IntType(std::numeric_limits<Type>::min()), IntType(std::numeric_limits<Type>::max()));
return Type(clamped);
}