Representing float values in hex

[cboard_member]

I need someone to explain this to me. I was looking at the disassembly of this:

void func (void)
{
        float   fl_one = 0.0f;
        float   fl_two = 0.0f;
        float   fl_ans = 0.0f;

        fl_one = 2.2f;
        fl_two = 3.5f;
        
        fl_ans = fl_one + fl_two;
}

The disassembly of the assignment is as follows:

mov         dword ptr [fl_one],400CCCCDh
mov         dword ptr [fl_two],40600000h

How the hell does 400CCCCDh represent 2.2? I replaced "fl_one = 2.2f;" with

mov fl_one, 400CCCCDh

And it works so I assume the hex number isn't something to do with the compiler storing values (or something).

Can someone explain / link to how floating point vals are represented in hex? I would prefer someone explaining it

[Salem]

1 sign bit
8 bits of biased exponent
23 bits of mantissa
http://stevehollasch.com/cgindex/coding/ieeefloat.html

[cboard_member]

Thanks for the link
I did start to read about the IEEE standard on the art of assembly site, but his images seem to be buggered (corrupted maybe) and images really help... even simple tables.