[#CuckooCache-bit_packed_atomic_flags-bit_unset]
= xref:CuckooCache.adoc[CuckooCache]::xref:CuckooCache/bit_packed_atomic_flags.adoc[bit_packed_atomic_flags]::bit_unset
:relfileprefix: ../../
:mrdocs:

bit_unset marks an entry as something that should not be overwritten.

== Synopsis

Declared in `<cuckoocache.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
bit_unset(uint32_t s);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *s*
| the index of the entry to bit_unset
|===

== Postconditions

* immediately subsequent call (assuming proper external memory ordering) to bit_is_set(s) == false.


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