{
  "function": "DAYS",
  "software": "Gnumeric",
  "guide": "/gnumeric/functions/days/",
  "review_date": "2026-10-12",
  "scope": "Selected example checks, not certification of every formula, error, locale or cross-application import/export.",
  "native_engine": null,
  "native_assertions": 0,
  "native_observations": 0,
  "native_cases": [],
  "independent_model_cases": [
    {
      "software": "gnumeric",
      "function": "DAYS",
      "case": "2024-03-01 minus 2024-02-28",
      "formula": "",
      "actual": 2,
      "expected": 2,
      "passed": true,
      "method": "Gregorian date subtraction",
      "native_application": false
    },
    {
      "software": "gnumeric",
      "function": "DAYS",
      "case": "2024-02-28 minus 2024-03-01",
      "formula": "",
      "actual": -2,
      "expected": -2,
      "passed": true,
      "method": "Gregorian date subtraction",
      "native_application": false
    },
    {
      "software": "gnumeric",
      "function": "DAYS",
      "case": "2025-01-01 minus 2024-12-31",
      "formula": "",
      "actual": 1,
      "expected": 1,
      "passed": true,
      "method": "Gregorian date subtraction",
      "native_application": false
    },
    {
      "software": "gnumeric",
      "function": "DAYS",
      "case": "2024-04-15 minus 2024-04-15",
      "formula": "",
      "actual": 0,
      "expected": 0,
      "passed": true,
      "method": "Gregorian date subtraction",
      "native_application": false
    },
    {
      "software": "gnumeric",
      "function": "DAYS",
      "case": "2024-03-04 minus 2024-02-28",
      "formula": "",
      "actual": 5,
      "expected": 5,
      "passed": true,
      "method": "Gregorian date subtraction",
      "native_application": false
    },
    {
      "software": "gnumeric",
      "function": "DAYS",
      "case": "2024-05-13 minus 2024-05-10",
      "formula": "",
      "actual": 3,
      "expected": 3,
      "passed": true,
      "method": "Gregorian date subtraction",
      "native_application": false
    }
  ],
  "documented_expected_results_not_native": true,
  "sources": [
    "https://gnome.pages.gitlab.gnome.org/gnumeric/manual/CATEGORY_DateTime.html#gnumeric-function-DAYS",
    "https://gnome.pages.gitlab.gnome.org/gnumeric/manual/CATEGORY_DateTime.html",
    "https://gnome.pages.gitlab.gnome.org/gnumeric-web/date-time-formats.shtml",
    "https://gnome.pages.gitlab.gnome.org/gnumeric-web/functions.shtml",
    "https://download.gnome.org/sources/gnumeric/1.12/"
  ]
}