What is the logical bit layout of the number-12.5 in IEEE single- precision format (float)? Separate the 3 parts by a space for readability. What is ulps(20.30) in IEEE single precision?. What number is represented by the following IEEE single-precision value? 1 10000100 10110000000000000000000 The number 20 can be expressed in binary as 1.01 times 2^4, and 11 as 1.011times 2^3. Assuming 4 bits of precision: a. Do the binary arithmetic to compute 20 - 11. Give the answer in decimal. b. Repeat part a) using 1 guard digit