Returns the number of decimal places to retain when displaying the input number a.
a: The input number to evaluate for display rounding.
Examples
show summary "Roundings" with
arground(5.3001) as "of 5.3001"
arground(5.30001) as "of 5.30001"
arground(5.29998) as "of 5.29998"
Output:
of 5.3001
of 5.30001
of 5.29998
1
1
1
Remarks
This function favors shorter display forms when the decimal expansion is close to a round value. In the example above, all inputs return 1, meaning one decimal place is recommended.