DOLLARDE() and DOLLARFR() miscalculation with negative numbers

[MarkBaker]

This is:

- [X] a bug report
- [ ] a feature request
- [ ] **not** a usage question (ask them on https://stackoverflow.com/questions/tagged/phpspreadsheet or https://gitter.im/PHPOffice/PhpSpreadsheet)

When splitting the dollars value to integer/decimal, floor() is used for the integer part. This results in the result for negative values being incorrect by -1

What is the expected behavior?

=DOLLARDE(-3.75,4) should give a result of -4.85
=DOLLARDE(-3.75,4) should give a result of -3.3

What is the current behavior?

=DOLLARDE(-3.75,4) gives a result of -5.85
=DOLLARDE(-3.75,4) gives a result of -4.3

Which versions of PhpSpreadsheet and PHP are affected?

ALL

[MarkBaker]

Fixed