roman_numeral

Rust library for roman numerals. Encode/decode roman numerals with ease!

Usage

Add this to your Cargo.toml:

toml [dependencies] roman_numeral = "0.1"

Example

```rust use roman_numeral::{RomanNumeral, RomanNumeralError};

// Create roman numeral let roman = RomanNumeral::fromstring("I").unwrap(); asserteq!(roman.get_u32(), 1);

let roman = RomanNumeral::fromu32(49).unwrap(); asserteq!(roman.get(), String::from("XLIX"));

// Get roman numeral (string) let roman = RomanNumeral::from_u32(3999).unwrap(); let numeral = roman.get(); // MMMCMXCIX

// Get roman numeral decimal value let roman = RomanNumeral::fromstring("CXXV").unwrap(); let decimalvalue = roman.get_u32(); // 125

// Get maximum possible value let maxvalue = RomanNumeral::maxvalue(); asserteq!(maxvalue, 3999);

// Invalid input let error = RomanNumeral::fromstring("IIII").unwraperr(); assert_eq!(error, RomanNumeralError::InvalidStr);

let error = RomanNumeral::fromu32(0).unwraperr(); assert_eq!(error, RomanNumeralError::NumberOutOfRange);

let error = RomanNumeral::fromu32(4000).unwraperr(); assert_eq!(error, RomanNumeralError::NumberOutOfRange); ```