[#base_uint-0d-operator_minus_eq-0a]
= xref:base_uint-0d.adoc[base_uint<256>]::operator‐=
:relfileprefix: ../
:mrdocs:

Subtraction assignment operators

== Synopses

Declared in `<arith_uint256.h>`

Subtracts a 64‐bit value from this big integer in place.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:base_uint-02.adoc[base_uint<256>]&
xref:base_uint-0d/operator_minus_eq-09.adoc[operator‐=](uint64_t b64);
----

[.small]#xref:base_uint-0d/operator_minus_eq-09.adoc[_» more..._]#

Subtracts another big integer from this value in place.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:base_uint-02.adoc[base_uint<256>]&
xref:base_uint-0d/operator_minus_eq-05.adoc[operator‐=](xref:base_uint-02.adoc[base_uint<256>] const& b);
----

[.small]#xref:base_uint-0d/operator_minus_eq-05.adoc[_» more..._]#

== Return Value

A reference to this object.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *b64*
| The value to subtract.
| *b*
| The value to subtract.
|===


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