Function vtst_s16 

pub fn vtst_s16(a: int16x4_t, b: int16x4_t) -> uint16x4_t

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

Signed compare bitwise Test bits nonzero Arm’s documentation