Function vrndscalesd 

unsafe extern "C" fn vrndscalesd(
    a: Simd<f64, 2>,
    b: Simd<f64, 2>,
    src: Simd<f64, 2>,
    mask: u8,
    imm8: i32,
    sae: i32,
) -> Simd<f64, 2>

Available on x86 or x86-64 only.