{
  "function": "IMTAN",
  "software": "LibreOffice Calc",
  "guide": "/libreoffice/functions/imtan/",
  "review_date": "2026-10-12",
  "scope": "Selected example checks, not certification of every formula, error, locale or cross-application import/export.",
  "native_engine": "LibreOffice 25.2.3.2 520(Build:2)",
  "native_assertions": 4,
  "native_observations": 0,
  "native_cases": [
    {
      "id": "IMTAN-1",
      "function": "IMTAN",
      "source_path": "content/libreoffice/functions/imtan.md",
      "formula": "=IMTAN(\"1+i\")",
      "inputs": {},
      "expected": [
        0.2717525853195118,
        1.0839233273386946
      ],
      "kind": "complex",
      "actual": "0.271752585319512+1.08392332733869i",
      "native_error": 0,
      "passed": true
    },
    {
      "id": "IMTAN-2",
      "function": "IMTAN",
      "source_path": "content/libreoffice/functions/imtan.md",
      "formula": "=IMTAN(\"4-3i\")",
      "inputs": {},
      "expected": [
        0.00490825806749606,
        -1.000709536067233
      ],
      "kind": "complex",
      "actual": "0.00490825806749606-1.00070953606723i",
      "native_error": 0,
      "passed": true
    },
    {
      "id": "IMTAN-3",
      "function": "IMTAN",
      "source_path": "content/libreoffice/functions/imtan.md",
      "formula": "=IMTAN(\"1+2j\")",
      "inputs": {},
      "expected": [
        0.0338128260798967,
        1.0147936161466335
      ],
      "kind": "complex",
      "actual": "0.0338128260798967+1.01479361614663j",
      "native_error": 0,
      "passed": true
    },
    {
      "id": "IMTAN-4",
      "function": "IMTAN",
      "source_path": "content/libreoffice/functions/imtan.md",
      "formula": "=IMTAN(\"bad\")",
      "inputs": {},
      "expected": 502,
      "kind": "error",
      "actual": 502,
      "native_error": 502,
      "passed": true
    }
  ],
  "independent_model_cases": [],
  "documented_expected_results_not_native": false,
  "sources": [
    "https://help.libreoffice.org/latest/en-US/text/scalc/01/func_imtan.html",
    "https://help.libreoffice.org/latest/en-US/text/scalc/01/04060116.html",
    "https://support.microsoft.com/en-us/excel/functions/imtan-function"
  ]
}