elaborate on numeric encoding

[EhrmannS]

R and its packages have different standards on how numeric values are handled, for example see https://tibble.tidyverse.org/articles/numbers.html for an in depth discussion on this in the tibble package. As it is highly relevant how bitfield treats numeric values, there is potential for confusion, which needs to be clarified beyond a doubt for bitfield to become a reliable tool.

[EhrmannS]

Perhaps it makes sense to summarise the information here (https://www.cs.cornell.edu/~tomf/notes/cps104/floating) in a similarly entertaining way that can be read from within the package documentation.