{
  "function": "ISERROR",
  "software": "Gnumeric",
  "guide": "/gnumeric/functions/iserror/",
  "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": "ISERROR",
      "case": "numeric result",
      "formula": "",
      "actual": false,
      "expected": false,
      "passed": true,
      "method": "Documentation-directed error-type model",
      "native_application": false
    },
    {
      "software": "gnumeric",
      "function": "ISERROR",
      "case": "division error",
      "formula": "",
      "actual": true,
      "expected": true,
      "passed": true,
      "method": "Documentation-directed error-type model",
      "native_application": false
    },
    {
      "software": "gnumeric",
      "function": "ISERROR",
      "case": "NA error",
      "formula": "",
      "actual": true,
      "expected": true,
      "passed": true,
      "method": "Documentation-directed error-type model",
      "native_application": false
    },
    {
      "software": "gnumeric",
      "function": "ISERROR",
      "case": "text",
      "formula": "",
      "actual": false,
      "expected": false,
      "passed": true,
      "method": "Documentation-directed error-type model",
      "native_application": false
    },
    {
      "software": "gnumeric",
      "function": "ISERROR",
      "case": "zero",
      "formula": "",
      "actual": false,
      "expected": false,
      "passed": true,
      "method": "Documentation-directed error-type model",
      "native_application": false
    }
  ],
  "documented_expected_results_not_native": true,
  "sources": [
    "https://gnome.pages.gitlab.gnome.org/gnumeric/manual/CATEGORY_Information.html#gnumeric-function-ISERROR",
    "https://gnome.pages.gitlab.gnome.org/gnumeric/manual/CATEGORY_Information.html",
    "https://gnome.pages.gitlab.gnome.org/gnumeric-web/announcements/1.12/gnumeric-1.12.62.html",
    "https://gnome.pages.gitlab.gnome.org/gnumeric/manual/sect-data-types.html",
    "https://help.libreoffice.org/latest/en-US/text/scalc/01/04060104.html",
    "https://support.microsoft.com/en-us/excel/functions/is-functions",
    "https://gnome.pages.gitlab.gnome.org/gnumeric/manual/sect-configuration-localization.html"
  ]
}