private static void assertFormulaResult(CellValue cv, ICell cell)
{
double actualValue = cv.NumberValue;
double expectedValue = cell.NumericCellValue; // cached formula result calculated by Excel
Assert.AreEqual(CellType.Numeric, cv.CellType, "Invalid formula result: " + cv.ToString());
Assert.AreEqual(expectedValue, actualValue, 1E-4); // should agree within 0.01%
}
