Macro safe_arch::extract_i32_imm_m128i

macro_rules! extract_i32_imm_m128i {
    ($a:expr, $imm:expr) => { ... };
}

Gets the i32 lane requested. Only the lowest 2 bits are considered.

let a = m128i::from([5, 6, 7, 8]);
assert_eq!(extract_i32_imm_m128i!(a, 1), 6);