[#MemPoolFeeRateEstimator-CalculateMaxWeightPercentiles]
= xref:MemPoolFeeRateEstimator.adoc[MemPoolFeeRateEstimator]::CalculateMaxWeightPercentiles
:relfileprefix: ../
:mrdocs:

Calculate the 50th and 75th percentile fee rates from block template chunks, sorted in descending mining‐score order. A percentile is left empty when the chunks cannot cover the corresponding fraction of a block.

== Synopsis

Declared in `<policy/fees/mempool_estimator.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
xref:MemPoolFeeRateEstimator/Percentiles.adoc[Percentiles]
CalculateMaxWeightPercentiles(std::span<FeePerVSize const> chunk_feerates);
----

== Return Value

The 50th and 75th percentile fee rates; a percentile is left empty when the chunks cannot cover it.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *chunk_feerates* [in]
| Block template chunk fee rates sorted by descending mining score.
|===


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