[#CTxMemPool-ApplyDelta]
= xref:CTxMemPool.adoc[CTxMemPool]::ApplyDelta
:relfileprefix: ../
:mrdocs:

Add the stored fee delta for the given txid to the supplied fee value&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
&lsqb;&lsqb;requires&lowbar;capability(0x7f95135d2178), requires&lowbar;capability(0x7f9501b11558), requires&lowbar;capability(0x7f950ec77748), requires&lowbar;capability(0x7f9525ea7498), requires&lowbar;capability(0x7f9515096bd8), requires&lowbar;capability(0x7f950826ae78), requires&lowbar;capability(0x7f94f856e588), requires&lowbar;capability(0x7f9513c58778)&rsqb;&rsqb;
void
ApplyDelta(
    xref:Txid.adoc[Txid] const& hash,
    xref:CAmount.adoc[CAmount]& nFeeDelta) const;
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *hash*
| The txid to look up&period;
| *nFeeDelta*
| Fee value that is increased by the stored delta, if any&period;
|===


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