The fields listed here are considered internal details. These
internals may change in new minor releases of this crate, though
they will be kept unchanged for patch releases. Any code that
makes use of these internals should list the dependency as
version = "~1.4" inside Cargo.toml, not
version = "1.4".
Internal implementation detail: numerator.
Internal implementation detail: denominator.
type Error = Infallible
The type returned in the event of a conversion error.