numeral_system

This library implements a conversion from integer to a string numeral system. It implements two numeral systems :

• Attic Numeral
• Roman Numeral

Just require attic_numeral or roman_numeral and methods to_attic_numeral or to_roman_numeral are added to Fixnum :

6.to_roman_numeral #returns "VI"
287.to_roman_numeral #returns "CCLXXXVII" 
287.to_attic_numeral #returns "ΗΗΔΔΔΔΔΔΔΔΠΙΙ"

Both method can take a overflow: true argument which will attempt to construct the number

9999.to_roman_numeral #returns "MMMMMMMMMCMXCIX
10000.to_roman_numeral #raise  exception : ArgumentError: Overflow error, no symbols available for numbers with 10^4 magnitude. (Biggest symbol available : M (1000)), try with overflow=true
10000.to_roman_numeral(overflow: true) #returns "MMMMMMMMMM"

Tests can be launched with rspec