const TAU: f32 = 2. * PI

const HUE_GUARD: f32 = 0.0001

fn gamma ( ) -> f32

fn inverse_gamma ( ) -> f32

fn srgb_to_linear_rgb ( ) -> vec3<f32>

fn linear_rgb_to_srgb ( ) -> vec3<f32>

fn oklab_to_linear_rgb ( ) -> vec3<f32>

fn hsl_to_linear_rgb ( ) -> vec3<f32>

fn hsv_to_linear_rgb ( ) -> vec3<f32>

fn oklch_to_linear_rgb ( ) -> vec3<f32>

fn mix_oklch ( ) -> vec3<f32>

fn mix_oklch_long ( ) -> vec3<f32>

fn mix_hsl ( ) -> vec3<f32>

fn mix_hsl_long ( ) -> vec3<f32>

fn mix_hsv ( ) -> vec3<f32>

fn mix_hsv_long ( ) -> vec3<f32>