First of all sorry for my english I'm working on converting a float to double precision (64 bits) in hexadecimal in Java, already in this topic I'll need help, useful link, so on... I've seen in (Double-precision 64-bit) we say that the fraction is 56 bits while in (IEEE 754 double-precision formats binary floating-point: binary64) we say that the fraction is 52 bits!
I trying to understand because I am working on a Java project and I need to represent on 8 bytes a double like for example (0.001) in hexadecimal.