? Like modifies to be sorted, like what does that mean? Sorts it? by what criteria?

note: check up what a floating point exactly means Googled : How floating-point numbers work The idea is to compose a number of two main parts:

A significand that contains the number’s digits. Negative significands represent negative numbers. An exponent that says where the decimal (or binary) point is placed relative to the beginning of the significand. Negative exponents represent numbers that are very small (i.e. close to zero).