Function simdnoise::sse2::fbm_2d

pub unsafe fn fbm_2d(
    x: __m128, 
    y: __m128, 
    freq: __m128, 
    lacunarity: __m128, 
    gain: __m128, 
    octaves: u8
) -> __m128

This is supported with target feature sse2 only.

Get a single value of 2d fractal brownian motion.