Anything without range analysis is not worth it.

Note that:

NonZerof32 * NonZerof32 -> NonNanf32

NonZerof32::from_bits(1) multiplied with itself is zero.

Doing range analysis needs the language to support it at compile time, and the dev to specify what range it is.

The only 'stable' thing i can think of is a type for 'greater-eq-one' using only addition and multiplication. Practically every other operation breaks most of the type knowledge up to that point.