mp_units::is_value_preserving

Specifies if a specific conversion between two types preserves the value

Synopsis

Declared in <mp-units/framework/customization_points.h>
template<
    typename From,
    typename To>
constexpr bool is_value_preserving = treat_as_floating_point<To> || !treat_as_floating_point<From>;

Description

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.

Template Parameters

Name Description
From a source representation type
To a destination representation type

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