René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Discrepancy: number comparison differs from Processing Java `(0.1 + 0.2 == 0.3)`","articleBody":"I don't know whether this is something that needs to be addressed or just documented. \nI suppose this is related to the difference between `float` and `double` precision (?)\n\nIn Processing, this condition evaluates to `true`:\n\n```java\nvoid setup() {\n  size(400, 400);\n\n  if (0.1 + 0.2 == 0.3) {\n    background(0, 255, 0);\n    circle(200, 200, 100);\n  }\n}\n```\n\nThe equivalent mewnala sketch evaluates the condition as `false`.\n\n```python\nfrom mewnala import *\n\ndef setup():\n    size(200, 200)\n\n    if 0.1 + 0.2 == 0.3:\n        background(0, 255, 0)\n        circle(200, 200, 100)\n\nrun()\n```\n\n_Note: size is reduced in mewnala to account for https://github.com/processing/libprocessing/issues/198_\n\n\u003cimg width=\"1315\" height=\"702\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/1a21ed52-82bc-4e2e-9b31-b00c69d8cc47\" /\u003e","author":{"url":"https://github.com/SableRaf","@type":"Person","name":"SableRaf"},"datePublished":"2026-07-14T11:41:39.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/203/libprocessing/issues/203"}