Function safe_arch::floor_m128

pub fn floor_m128(a: m128) -> m128

Available with target feature sse4.1 only.

Round each lane to a whole number, towards negative infinity

let a = m128::from_array([-0.1, 1.8, 2.5, 3.0]);
assert_eq!(floor_m128(a).to_array(), [-1.0, 1.0, 2.0, 3.0]);