Function vcls_s8 

pub fn vcls_s8(a: int8x8_t) -> int8x8_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.

Count leading sign bits Arm’s documentation