[#BloombergLP-bdlc-FlatHashTable_GroupControl-match]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::xref:BloombergLP/bdlc/FlatHashTable_GroupControl.adoc[FlatHashTable&lowbar;GroupControl]::match
:relfileprefix: ../../../
:mrdocs:

Return a bit mask of the `k&lowbar;SIZE` entries that have the specified `value`&period;

== Synopsis

Declared in `&lt;bdlc&lowbar;flathashtable&lowbar;groupcontrol&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
uint32&lowbar;t
match(uint8&lowbar;t value) const;
----

== Description

The bit at index `i` corresponds to the result for `data&lsqb;i&rsqb;`&period; The behavior is undefined unless `0 &equals;&equals; (0x80 &amp; value)`&period;

== Return Value

bit mask of entries matching `value`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *value*
| control&hyphen;byte value to match (MSB must be clear)
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#
