NAME

Text::Roman - Converts roman algarism in integer numbers and the contrary, recognize algarisms.

SYNOPSIS

        use Text::Roman;

        print roman(123);

DESCRIPTION

Text::Roman::roman() is a very simple algarism converter. It converts a single integer (in arabic algarisms) at a time to its roman correspondent. The conventional roman numbers goes from 1 up to 3999. MROMANS (milhar romans) range is 1 up to 3999*1000+3999=4002999.

Up to these number we will found symbols as:??????but they do not concern this specific package. There is no concern for mix cases, like 'Xv', 'XiiI', as legal roman algarism numbers.

roman($int): return string containing the roman corresponding to the given integer, or '' if the integer is out of domain...

roman2int($str): return '' if $str is not roman or return integer if it is.

isroman($str): verify whether the given string is a conventional roman number, if it is return 1; if it is not return 0...

Quite same follows for mroman2int($str) and ismroman($str), except that these functions treat milhar romans.

SPECIFICATION

Roman number has origin in following BNF-like formula:

a = I{1,3}

b = V\a?|IV|\a

e = X{1,3}\b?|X{0,3}IX|\b

ee = IX|\b

f = L\e?|XL\ee?|\e

g = C{1,3}\f?|C{0,3}XC\ee?|\f

gg = XC\ee?|\f

h = D\g?|CD\gg?|\g

j = M{1,3}\h?|M{0,3}CM\gg?|\h

REFERENCES

Especification supplied by redactor's manual of newspaper "O Estado de São Paulo". URL: http://www.estado.com.br/redac/norn-nro.html

EXAMPLE

        use Text::Roman;
        
        $roman  = "XXXV";
        $mroman = 'L_X_XXIII';
        print roman(123), "\n";
        print roman2int($roman), "\n"   if isroman($roman);
        print mroman2int($mroman), "\n" if ismroman($mroman);

BUGS

No one known.

AUTHOR

Peter de Padua Krauss, krauss@ifqsc.sc.usp.br.

COPYRIGHT

1.2-krauss/set/97; 1.0-krauss/3/ago/97