Random floating point double in Inclusive Range

Question

We can easily get random floating point numbers within a desired range [X,Y) (note that X is inclusive and Y is exclusive) with the function listed below since

Answer 1

The question is akin to asking, what is the floating point number right before 1.0? There is such a floating point number, but it is one in 2^24 (for an IEEE float) or one in 2^53 (for a double).

The difference is negligible in practice.