Function vrsraq_n_s8 

pub fn vrsraq_n_s8(a: int8x16_t, b: int8x16_t, const N: i32) -> int8x16_t

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

Signed rounding shift right and accumulate Arm’s documentation