[#CBlockIndex-GetAncestor-0f]
= xref:CBlockIndex.adoc[CBlockIndex]::GetAncestor
:relfileprefix: ../
:mrdocs:

`GetAncestor` overloads

== Synopses

Declared in `<chain.h>`

Efficiently find an ancestor of this block.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:CBlockIndex.adoc[CBlockIndex]*
xref:CBlockIndex/GetAncestor-09.adoc[GetAncestor](int height);
----

[.small]#xref:CBlockIndex/GetAncestor-09.adoc[_» more..._]#

Efficiently finds an ancestor of this block.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:CBlockIndex.adoc[CBlockIndex] const*
xref:CBlockIndex/GetAncestor-00.adoc[GetAncestor](int height) const;
----

[.small]#xref:CBlockIndex/GetAncestor-00.adoc[_» more..._]#

== Return Value

The ancestor at the given height, or nullptr if none exists.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *height*
| The height of the ancestor to find.
|===


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