How can I pack and split several images into single 32 bit grayscale channel.

Namely Height, U and V gradients  and index .     Maybe in  some of  32 bits  by some kind of an order mask for those 32 binary bits numbers  the pixel value should  be build from theoretically       or  maybe by how many numbers after comma a pixel value has.    I want to do an FX map  in 32bit mode  the way I could split  the resulting floating point image  into  those height, UV and index? And do this  the way I still could do more or less MAx (lighter)  blending?

Is there a way at all or it's totally  silly idea?