got: '132081019.20' expected: '132081019.2'

got: '125797416.00' expected: '125797416'

The factor test code expects the result to be truncated to 2 decimal places and throws an error when the resulting code doesn't.

Perl: Input is reference(\@array) rather than an array(@array).

C++ translation kumited

Please don't force users to round values, it is a bad practice.
Use proper testing of floating point numbers instead.
In this case there is even some ambiguity on where to use rounding (taking the square root can produce non-rational numbers)

I think a good rule for rounding is to use it only to display values with a reasonable number of digits.