Skip to main content

## _mulx_u64

# Function _mulx_u64

1.27.0 (const: unstable) · Source

    pub fn _mulx_u64(a: u64, b: u64, hi: &mut u64) -> u64

Available on x86-64 and non-x86 and target feature `bmi2` only.
Expand description

Unsigned multiply without affecting flags.

Unsigned multiplication of `a` with `b` returning a pair `(lo, hi)` with the low half and the high half of the result.

Intel’s documentation