Function safe_arch::mul_extended_u64

pub fn mul_extended_u64(a: u64, b: u64, extra: &mut u64) -> u64

Available with target feature bmi2 only.

Multiply two u64, outputting the low bits and storing the high bits in the reference.

This does not read or write arithmetic flags.

• Intrinsic: _mulx_u64
• Assembly: mulx r64, r64, m64