[#absl-MakeInt128]
= xref:absl.adoc[absl]::MakeInt128
:relfileprefix: ../
:mrdocs:

Constructs an `int128` numeric value from two 64‐bit integers.

== Synopsis

Declared in `<absl/numeric/int128.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:absl/int128.adoc[int128]
MakeInt128(
    int64_t high,
    uint64_t low);
----

== Description

Signedness is conveyed in the upper `high` value, following `(absl::int128(1) << 64) * high + low`. This factory function is the only way to construct an `int128` from integer values greater than 2ˆ64 or less than ‐2ˆ64.

Example:

absl::int128 big = absl::MakeInt128(1, 0); absl::int128 big_n = absl::MakeInt128(‐1, 0);

== Return Value

An `int128` assembled from `high` and `low`.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *high*
| The high‐order 64 bits, carrying the sign, of the result.
| *low*
| The low‐order 64 bits of the result.
|===


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