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

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<typename T>
requires requires {
    { T::zero() } ‐> std::equality_comparable_with<T>;
  }
[[deprecated("2.6.0: compare against literal `0` instead"), nodiscard]]
constexpr
bool
is_eq_zero(T v);
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]: 2.6.0: compare against literal `0` instead. Use of this entity is allowed but discouraged.
====
== Return Value

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====

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