[#mp_units-is_value_preserving]
= xref:mp_units.adoc[mp_units]::is_value_preserving
:relfileprefix: ../
:mrdocs:

Specifies if a specific conversion between two types is representable without data loss

== Synopsis

Declared in `<mp‐units/framework/customization_points.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
template<
    typename From,
    typename To>
constexpr bool is_value_preserving = treat_as_floating_point<To> || !treat_as_floating_point<From>;
----

== Template Parameters

[cols="1,4"]
|===
|Name|Description

| *From*
| a source representation type
| *To*
| a destination representation type
|===


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