Function vcvtnh_s64_f16 

pub fn vcvtnh_s64_f16(a: f16) -> i64

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

Available on target feature fp16 and target feature neon and (AArch64 or ARM64EC) only.

Floating-point convert to integer, rounding to nearest with ties to even Arm’s documentation