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

Add the stored fee delta for the given txid to the supplied fee value.

== Synopsis

Declared in `<txmempool.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[requires_capability(0x7f2e1b5a20a8), requires_capability(0x7f2e2721b0b8), requires_capability(0x7f2e421cc7c8), requires_capability(0x7f2e2880b788), requires_capability(0x7f2e3212eb18), requires_capability(0x7f2e347f71a8), requires_capability(0x7f2e2b05b618), requires_capability(0x7f2e2bee2cb8)]]
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.
| *nFeeDelta*
| Fee value that is increased by the stored delta, if any.
|===


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