Given two numbers and . The task is to subtract from by using 2’s Complement method.
Note: Negative numbers represented as 2’s Complement of Positive Numbers.
For example, -5 can be represented in binary form as 2’s Compliment of 5. Look at the image below:
Input : a = 2, b = 3 Output : -1 Input : a = 9, b = 7 Output : 2
To subtract from . Write the expression (a-b) as:
(a - b) = a + (-b)
Now (-b) can be written as (2’s complement of b). So the above expression can be now written as:
(a - b) = a + (2's complement of b)
So, the problem now reduces to “Add to the 2’s complement of “. Below image illustrates the above method of subtraction for the first example where a = 2 and b = 3.
Below is the implementation of above method:
- Check if one of the numbers is one's complement of the other
- Why are negative numbers stored as 2's complement?
- Check if bits in range L to R of two numbers are complement of each other or not
- What’s difference between 1's Complement and 2's Complement?
- Program for subtraction of matrices
- 1's and 2's complement of a Binary Number
- Previous number same as 1's complement
- Find One's Complement of an Integer
- 9's complement of a decimal number
- 10's Complement of a decimal number
- Complement of a number with any base b
- 8085 program to find 1’s and 2’s complement of 16-bit number
- 8085 program to find 1's and 2's complement of 8-bit number
- Efficient method for 2's complement of a binary string
- Find relative complement of two sorted arrays
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