[#internal_bswap_64]
= internal_bswap_64
:mrdocs:

Reverses the byte order of a 64‐bit value.

== Synopsis

Declared in `<compat/byteswap.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
uint64_t
internal_bswap_64(uint64_t x);
----

== Return Value

The value with its byte order reversed.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *x*
| The value whose eight bytes are swapped.
|===


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