Macro safe_arch::round_m128_s

macro_rules! round_m128_s {
    ($a:expr, $b:expr, Nearest) => { ... };
    ($a:expr, $b:expr, NegInf) => { ... };
    ($a:expr, $b:expr, PosInf) => { ... };
    ($a:expr, $b:expr, Zero) => { ... };
}

Rounds $b low as specified, other lanes use $a.

let a = m128::from_array([f32::NAN, 6.0, 7.0, 8.0]);
//
let b = m128::from_array([-0.1, f32::NAN, f32::NAN, f32::NAN]);
//
assert_eq!(round_m128_s!(a, b, Nearest).to_array(), [0.0, 6.0, 7.0, 8.0]);
assert_eq!(round_m128_s!(a, b, NegInf).to_array(), [-1.0, 6.0, 7.0, 8.0]);
//
let b = m128::from_array([2.4, f32::NAN, f32::NAN, f32::NAN]);
//
assert_eq!(round_m128_s!(a, b, PosInf).to_array(), [3.0, 6.0, 7.0, 8.0]);
assert_eq!(round_m128_s!(a, b, Zero).to_array(), [2.0, 6.0, 7.0, 8.0]);