Macro safe_arch::shift_left_i64_immediate_m128i

macro_rules! shift_left_i64_immediate_m128i {
    ($a:expr, $imm:expr) => { ... };
}

Shifts both i64 lanes left by an immediate.

let a = m128i::from([1_i64, -2]);
let c: [i64; 2] = shift_left_i64_immediate_m128i!(a, 3).into();
assert_eq!(c, [1_i64 << 3, -2 << 3]);