Function safe_arch::move_mask_m128d

#[must_use]pub fn move_mask_m128d(a: m128d) -> i32

This is supported with target feature sse2 only.

Gathers the sign bit of each lane.

The output has lane 0 as bit 0, lane 1 as bit 1.

let a = m128d::from_array([-1.0, 12.0]);
let i = move_mask_m128d(a);
assert_eq!(i, 0b01);