Question

Question: Could 53 and -14 both still be represented if we only used 5-bit 2’s complement?

For each value, if it can be done then express it in 5-bit 2’s complement. If not, explain why.

Question: Translate the following C code segment into ARMv8 assembly

int x = 5, y = 15, z = 10;

x = ++x + y++;

y = (x++ + y++) * z;

Answer 1

1.

Ans: No

Because if we use 5-bit representation then

1 bit will be used for sign representation and 4 bits will be used for magnitude(data) representation.

So by using 4 bits we can represent - 2⁴ to +(2⁴ -1) i.e, -16 to +15

Here we are given 53 and -14

We can represent -14 because it is between -16 to +15

But 53 is not in the range of -16 to +15

So, we unable to represent it.