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feat: is_value_preserving customization point added

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Mateusz Pusz
2025-04-28 15:23:36 +02:00
parent 9a270de16c
commit 110a56dc30
1 changed files with 13 additions and 0 deletions
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13
src/core/include/mp-units/framework/customization_points.h
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@ -60,6 +60,19 @@ constexpr bool treat_as_floating_point =
std::is_floating_point_v<value_type_t<Rep>>; std::is_floating_point_v<value_type_t<Rep>>;
#endif #endif
/**
* @brief Specifies if a specific conversion between two types preserves the value
*
* This type trait should be specialized for a custom representation types to specify
* weather the conversion from the source type to the destination type preserves the value
* or not. Value-truncating conversions should be forced by the user with explicit casts.
*
* @tparam From a source representation type
* @tparam To a destination representation type
*/
template<typename From, typename To>
constexpr bool is_value_preserving = treat_as_floating_point<To> || !treat_as_floating_point<From>;
template<typename Rep> template<typename Rep>
[[deprecated("2.5.0: `is_scalar` is no longer necessary and can simply be removed")]] [[deprecated("2.5.0: `is_scalar` is no longer necessary and can simply be removed")]]
constexpr bool is_scalar = false; constexpr bool is_scalar = false;