Wrong calculation in DAYS formula in Spreadsheet

[nelito987]

Bug report

When the =DAYS() formula is used in Spreadsheet the result has the opposite sign compared to Excel. For example, if the result in Excel is 100, the result with the same dates in Spreadsheet is -100. If the result in Excel is -100, the result in Spreadsheet is 100.

Reproduction of the problem

1. Open the Dojo example. The formula used in C1 is =DAYS(A1, B1). The result is 365.
2. The same dates and formula are used in the linked Excel file
   DaysFormula.xlsx
   The result is -365

Current behavior

The DAYS formula in Spreadsheet gives a result with an opposite sign compared to Excel when the same dates are used.

Expected/desired behavior

The result of the DAYS formula should be the same as Excel.

Environment

• Kendo UI version: 2021.3.1207
• Browser: [all ]