Function vdup_n_f16 

pub fn vdup_n_f16(a: f16) -> float16x4_t

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

Available on ARM and non-target_arch=arm64ec and target feature neon and target feature fp16 only.

Create a new vector with all lanes set to a value Arm’s documentation