metadata:
  version: "1.0.0"
  last_updated: "2026-02-01"
  source_urls: []

category: numbers
subcategory: special
tier: T1

bugs_caught:
  - "NaN propagation"
  - "Infinity handling"
  - "Special value comparisons"

values:
  nan:
    value: "NaN"
    bugs_caught:
      - "NaN !== NaN comparison failure"
      - "NaN propagation through calculations"
      - "isNaN vs Number.isNaN confusion"
    safe_for_automation: true
    note: "Use Number.isNaN() not isNaN()"

  positive_infinity:
    value: "Infinity"
    bugs_caught:
      - "Infinite loop risks"
      - "Display of infinite values"
      - "Comparison with Infinity"
    safe_for_automation: true

  negative_infinity:
    value: "-Infinity"
    bugs_caught:
      - "Negative infinity handling"
      - "Min value calculations"
    safe_for_automation: true

  epsilon:
    value: 2.220446049250313e-16
    bugs_caught:
      - "Floating point comparison threshold"
    safe_for_automation: true
    note: "Number.EPSILON in JavaScript"

  max_value:
    value: 1.7976931348623157e+308
    bugs_caught:
      - "Maximum float value"
      - "Overflow to Infinity"
    safe_for_automation: true
    note: "Number.MAX_VALUE in JavaScript"

  min_value:
    value: 5e-324
    bugs_caught:
      - "Minimum positive float"
      - "Underflow to zero"
    safe_for_automation: true
    note: "Number.MIN_VALUE in JavaScript (positive)"

  min_safe_integer:
    value: -9007199254740991
    bugs_caught:
      - "Minimum safe integer"
      - "Precision loss below this"
    safe_for_automation: true
    note: "-(2^53 - 1)"