Function simd_ext_packev_d
pub(in ::core_arch::loongarch64::lasx::portable) const unsafe fn simd_ext_packev_d<T: Copy>(a: T, b: T) -> Tsimd_ext_packev_dpub(in ::core_arch::loongarch64::lasx::portable) const unsafe fn simd_ext_packev_d<T: Copy>(a: T, b: T) -> T