[#GCSFilter-Params]
= xref:GCSFilter.adoc[GCSFilter]::Params
:relfileprefix: ../
:mrdocs:

Parameters controlling the SipHash keys and Golomb&hyphen;Rice encoding of a filter&period;

== Synopsis

Declared in `&lt;blockfilter&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct Params;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:GCSFilter/Params/2constructor.adoc[`Params`]         [.small]#[constructor]#
| Constructs filter parameters from the SipHash keys and coding parameters&period;
|===


== Data Members

[cols="1,4"]
|===
| Name| Description
| xref:GCSFilter/Params/m_M.adoc[`m&lowbar;M`] 
| Inverse false positive rate
| xref:GCSFilter/Params/m_P.adoc[`m&lowbar;P`] 
| Golomb&hyphen;Rice coding parameter
| xref:GCSFilter/Params/m_siphash_k0.adoc[`m&lowbar;siphash&lowbar;k0`] 
| First 64&hyphen;bit half of the SipHash key&period;
| xref:GCSFilter/Params/m_siphash_k1.adoc[`m&lowbar;siphash&lowbar;k1`] 
| Second 64&hyphen;bit half of the SipHash key&period;
|===



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