[#CTxMemPoolEntry-UpdateModifiedFee]
= xref:CTxMemPoolEntry.adoc[CTxMemPoolEntry]::UpdateModifiedFee
:relfileprefix: ../
:mrdocs:

Updates the modified fee with the descendant or ancestor delta.

== Synopsis

Declared in `<kernel/mempool_entry.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
UpdateModifiedFee(xref:CAmount.adoc[CAmount] fee_diff) const;
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *fee_diff*
| The fee delta to add.
|===


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