[#base_uint-0d-operator_xor_eq-08]
= xref:base_uint-0d.adoc[base&lowbar;uint&lt;256&gt;]::operator&circ;&equals;
:relfileprefix: ../
:mrdocs:

Applies a bitwise XOR with a 64&hyphen;bit value in place&period;

== Synopsis

Declared in `&lt;arith&lowbar;uint256&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:base_uint-02.adoc[base&lowbar;uint&lt;256&gt;]&
operator&circ;&equals;(uint64&lowbar;t b);
----

== Return Value

A reference to this object&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *b*
| The right&hyphen;hand operand, affecting only the low 64 bits&period;
|===


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