Question 9843 – Digital-Logic-Design
February 13, 2024Question 9864 – Digital-Logic-Design
February 13, 2024Question 9845 – Digital-Logic-Design
Consider the values A = 2.0 x 1030, B = -2.0 x 1030, C = 1.0, and the sequence
X: = A + B Y: = A + C
X: = X + C Y: = Y + B executed on a computer where floating-point numbers are represented with 32 bits. The values for X and Y will be
Correct Answer: B
Question 48 Explanation:
Given: 32 bits representation. So, the maximum precision can be 32 bits (In 32-bit IEEE representation, maximum precision is 24 bits but we take best case here). This means approximately 10 digits.
A = 2.0 * 1030, C = 1.0
So, A + C should make the 31st digit to 1, which is surely outside the precision level of A (it is 31st digit and not 31st bit). So, this addition will just return the value of A which will be assigned to Y.
So, Y + B will return 0.0 while X + C will return 1.0.
A = 2.0 * 1030, C = 1.0
So, A + C should make the 31st digit to 1, which is surely outside the precision level of A (it is 31st digit and not 31st bit). So, this addition will just return the value of A which will be assigned to Y.
So, Y + B will return 0.0 while X + C will return 1.0.
X = 1.0, Y = 1.0
X = 1.0, Y = 0.0
X = 0.0, Y = 1.0
X = 0.0, Y = 0.0
Subscribe
Login
0 Comments