Function vgetq_lane_f16 

pub fn vgetq_lane_f16(a: float16x8_t, const LANE: i32) -> f16

🔬This is a nightly-only experimental API. (stdarch_neon_f16 #136306)

Available on ARM and little-endian and target feature neon and (AArch64 or ARM or ARM64EC) and (AArch64 or ARM64EC or target feature v7) and non-ARM64EC only.

Duplicate vector element to scalar Arm’s documentation