Floating Point result to the decimal one

I don't know what you mean with "mantissa format". An IEEE float number is comprised of mantissa and exponent.

There's however no conversion to a fixed point decimal format provided. If you want to see something like 3.3, you need to multiply the float result with 10 (or 100, 1000, whatsoever) and convert back to integer. You get a result of 33, 333 or 3333 in your example, which can be interpreted as fixed point decimal format.