Function vdup_n_s64 

pub fn vdup_n_s64(value: i64) -> int64x1_t

🔬This is a nightly-only experimental API. (stdarch_arm_neon_intrinsics #111800)

Available on ARM and (AArch64 or ARM64EC or target feature v7) and (ARM or AArch64 or ARM64EC) and target feature neon only.

Duplicate vector element to vector or scalar Arm’s documentation