Function core::arch::aarch64::vqrshrn_high_n_s32

pub unsafe fn vqrshrn_high_n_s32(
    a: int16x4_t, 
    b: int32x4_t, 
    const N: i32
) -> int16x8_t

This is supported on AArch64 and target feature neon only.

Signed saturating rounded shift right narrow