Function vget_lane_f16 

pub fn vget_lane_f16(a: float16x4_t, const LANE: i32) -> f16

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

Available on little-endian and target feature fp16 and target feature neon and target feature v7 and (AArch64 or ARM or ARM64EC) and (AArch64 or ARM64EC) and (AArch64 or ARM64EC or target feature v7) and non-ARM64EC only.

Duplicate vector element to scalar Arm’s documentation