Hi
Hopefully, you have started with RISC-V ISA and processor course by now. If not, you might want to start with them ASAP, using below RISC-V part 1a course:
In continuation to above course, we made a separate below RISC-V ISA course, exclusively, for floating point arithmetic, and just now added video on "Block diagram of floating-point ALU", which describes every block of above diagram, in detail.
This is very important if you are planning to implement FPU for your RISC-V core, and want to test it using programs like "Paranoia", which help identify if the unit is non-complaint with IEEE-754 floating point standard. All these are also covered in above 2 courses, with detailed graphics. Take a look...
All the best and happy learning...