[MATH-181] Specify the maximum of digits when parsing a Fraction

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.1
• Assignee: Unassigned
• Reporter: Niall Pemberton
• Created: 23/Jan/08 01:53
• Updated: 23/Apr/09 02:26
• Resolved: 01/Feb/08 09:44

Description

Firstly, thanks for the Fraction code - I've adapated it for something I'm working on and I didn't have a clue how to convert a decimal to a fraction

Excel spreadsheets have the facility to specify a fraction format where you specify the maximum number of denominator digits to display.

So for example:
format "?/?" displays decimal values formatted in the range 1/2 to n/9
format "/" displays decimal values formatted in the range 1/2 to n/99
format "?/?" displays decimal values formatted in the range 1/2 to n/999 etc

In excel then the value 0.6152 displays as 3/5, 8/13 and 510/829 respectively for the above 3 formats.

I'm attaching a patch for the Fraction class which adds a new constructor where the maximum number of digits can be specified, rather than the epsilon value.