[#operator_3way-00a]
= operator<=>
:mrdocs:

Order two wrapped FeeFracs by feerate.

== Synopsis

Declared in `<util/feefrac.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::strong_ordering
operator<=>(
    xref:ByRatio.adoc[ByRatio] const& a,
    xref:ByRatio.adoc[ByRatio] const& b) noexcept;
----

== Description

Note that we can use std::strong_ordering here, because even though FeeFrac{1,2} and FeeFrac{2,4} are distinct as FeeFracs, they are indistinguishable from ByRatio's perspective (operator== also treats them as equal).

== Return Value

The ordering of the feerates of a and b.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| The first operand.
| *b*
| The second operand.
|===


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