PhpSpreadsheet/tests/data/Calculation/Financial/XIRR.php

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<?php
// values, dates, guess, Result
return [
[
[
-10000,
[
2750,
4250,
3250,
2750,
46000,
],
],
[
'2008-01-01',
[
'2008-03-01',
'2008-10-30',
'2009-02-15',
'2009-04-01',
],
],
0.10000000000000001,
0.373362535,
],
[
[
-100,
[
20,
40,
25,
],
],
[
'2010-01-01',
[
'2010-04-01',
'2010-10-01',
'2011-02-01',
],
],
-0.3024,
],
[
[
-100,
[
20,
40,
25,
8,
15,
],
],
[
'2010-01-01',
[
'2010-04-01',
'2010-10-01',
'2011-02-01',
'2011-03-01',
'2011-06-01',
],
],
0.20949999999999999,
],
];