Graphmath.Vec3.length_squared

You're seeing just the function length_squared, go back to Graphmath.Vec3 module for more information.
Link to this function

length_squared(a)

Specs

length_squared(vec3()) :: float()

length_squared(a) finds the square of the length of a vec3.

a is the vec3 to find the length squared of.

It returns a float of the value a<sub>x</sub><sup>2</sup> + a<sub>y</sub><sup>2</sup> + a<sub>z</sub><sup>2</sup>.

In many cases, this is sufficient for comparisons and avoids a square root.