[#BlockFilter-ComputeHeader]
= xref:BlockFilter.adoc[BlockFilter]::ComputeHeader
:relfileprefix: ../
:mrdocs:

Compute the filter header given the previous one.

== Synopsis

Declared in `<blockfilter.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:uint256.adoc[uint256]
ComputeHeader(xref:uint256.adoc[uint256] const& prev_header) const;
----

== Return Value

The filter header for this block.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *prev_header*
| The header of the previous block's filter.
|===


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