Discrepancy: number comparison differs from Processing Java `(0.1 + 0.2 == 0.3)`

I don't know whether this is something that needs to be addressed or just documented.
I suppose this is related to the difference between float and double precision (?)

In Processing, this condition evaluates to true:

void setup() {
  size(400, 400);

  if (0.1 + 0.2 == 0.3) {
    background(0, 255, 0);
    circle(200, 200, 100);
  }
}

The equivalent mewnala sketch evaluates the condition as false.

from mewnala import *

def setup():
    size(200, 200)

    if 0.1 + 0.2 == 0.3:
        background(0, 255, 0)
        circle(200, 200, 100)

run()

Note: size is reduced in mewnala to account for https://github.com/processing/libprocessing/issues/198

Run the provided Processing Java and mewnala Python sketches to confirm the differing results. Then trace the numeric evaluation behavior in the Rust implementation and determine whether the discrepancy should be fixed or documented, with a test or documentation update defining the expected behavior.