nyar-number 0.0.7

# Rust Algebra


A Mathematica-like numeric system.


## Type promotion


- *Integer*

Integer ± Integer -> Integer
Integer * Integer -> Integer
Integer / Integer -> Rational

- *Rational*
Rational ± Integer -> Rational
Rational ± Rational -> Rational
Rational */ Rational -> Rational
Rational / 0 -> panic!()

- *Decimal*
Decimal ± Decimal -> Decimal
Decimal ± Rational -> Decimal
Decimal ± Decimal -> Decimal