Function core::arch::aarch64::vaddhn_s64

pub unsafe fn vaddhn_s64(a: int64x2_t, b: int64x2_t) -> int32x2_t

🔬 This is a nightly-only experimental API. (stdsimd #48556)

This is supported on AArch64 and target feature neon only.

添加返回的 High Narrow。