Could Someone Get Me A Tutorial on Doubles and Floats

I actually have seen these values in codes I make and use multiple times,but I want to know how to actually calculate them out manually. I can already calculate Octal,Hexadecimal,Binary,and normal decimal with a paper and pen and convert them between each other without a calculator. I'd love to know how to calculate these values out by hand. I'd love a good formula or method to do this with. Please,don't make it overly complicated like some websites try to make it look. That was done to me with Binary,and I found a more simpler method to calculate them out easily in seconds. I actually enjoy having that feeling of accomplishment to know that you can do something that your computer can without the computer actually instructing you. When I make my codes to instruct writes into the RAM,I don't want my computer instructing me on how to get these values(Calculators are what I'm referencing)

Doubles don't exist in Gecko codes and why would you want to convert float to hex using a pen? Your computer will help you.

I don't really know how anyways, there are functions for it :$

I guess it's a hunger for knowledge kind of thing. I figured that if I want to get to know computers better,and instruct them to the write values,I figured I didn't want them to instruct me.

Yes, be it useless sometimes but knowing more is interesting. For converting long dec to hex or whatever, you need a special strategy since the existing functions don't support any length (Integer and Long datatypes). Converting by hand and using BigInteger or something is the key. I had fun implementing it. xD
http://www.bullywiihacks.com/t474-

Notice how most applications have buffer overflows or whatever with bigger input while mine is unlimited.