# Function core::arch::wasm64::i64x2_relaxed_laneselect

source ·

    pub fn i64x2_relaxed_laneselect(a: v128, b: v128, m: v128) -> v128

🔬This is a nightly-only experimental API. (`stdarch_wasm_relaxed_simd` #111196)
Available on `target_family="wasm"` and target feature `relaxed-simd` and WebAssembly only.
Expand description

A relaxed version of `v128_bitselect` where this either behaves the same as `v128_bitselect` or the high bit of each lane `m` is inspected and the corresponding lane of `a` is chosen if the bit is 1 or the lane of `b` is chosen if it’s zero.

If the `m` mask’s lanes are either all-one or all-zero then this instruction is the same as `v128_bitselect`.