Function lattices::algebra::ring

pub fn ring<S: Debug + PartialEq + Clone, const N: usize>(
    items: &[S; N],
    f: &impl Fn(S, S) -> S,
    g: &impl Fn(S, S) -> S,
    zero: S,
    one: S,
    b: &impl Fn(S) -> S
) -> Result<(), &'static str>

Defines a ring structure. A ring is a semiring with an inverse operation on f.