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

Synopsis

Declared in <absl/numeric/int128.h>

constexpr
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

Name

Description

high

The high‐order 64 bits, carrying the sign, of the result.

low

The low‐order 64 bits of the result.

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