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Questions tagged [ones-complement]

The ones' complement of a numerical value is evaluated by performing a bitwise NOT operation on its binary representation.

The ones' complement of a numerical value is evaluated by performing a NOT operation on its binary representation.

Read also the wikipedia article on Ones' Complement.

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Python: ones complement using join and lambda

I am trying to create pipeline that converts a number to its Ones' complement number, for example (8) 1234 -> 7654 83743 -> 05145 I tried to create something in this style but I can't figure out how to build the pipeline…
Popo
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How to show that two integers with a sum of zero have one's complement representations that are bit-complementary?

I've been stuck on this question for a while now: Show mathematically that two integers that have a sum of zero have one’s complement representations that are bit-complementary.
cinos
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Left shift operation with Ones' complement binary

I'm in researching about bitwise operation and signed number representations​. I've recognized that if we do left shift on ones' complement pattern. It does not correctly multiply the original number. For example (Ones' complement): 11100101 (-26)…
Quoc Van Tang
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Is there a way to make my ones complement code far more efficient and to allow for multiple outputs at a time?

I am using dip switches as inputs and LEDs as outputs to resemble the ones complement of any given input. I am programming an Arduino Uno to attempt to do that. I am also not very experienced with bitwise efficiency; is there a way to greatly reduce…
Christiana S. F. Chamon
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Why is that magnitude of largest negative number represented in base -2, is twice as large as largest positive number represented?

Here they mention that " If the word has an even number of bits, the magnitude of the largest negative number that can be represented is twice as large as the largest positive number that can be represented, and vice versa if the word has an odd…
sofs1
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Confusing binary numbers

I had a doubt which is confusing me, Isn't 1101(base 2) = 13 (base 10) or is it 1101 (base 2) = -5 (base 10) ? I am assuming that when we use two's complement method then we use a negative integer, but when we generally use the integer then it is…
Sahil Silare
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Why does end-arround-carry works?

I understand why two's complement works (we're working modulo $2^n$). Now, in one's complement we work modulo $2^n-1$. Also, because of this, we get two representations for zero because $1111$ is congruent to $0000$ modulo $2^n-1$. What I don't…
LearningMath
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Why do we use complements to perform subtraction operation in computer systems?

Why do we have to use complements (e.g 2's complement, 10's complement etc) in computer systems to perform subtraction operations? Just like circuits for addition operations(adders) , we do have circuits for subtraction(subtractors), right?
Waqar Danish
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Why is the one's complement representation better than others?

It seems like one's complement representation of signed numbers is the most popular now (and probably the only representation used in the modern hardware). Why is it exactly better than others?
Michael
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Hey, new to programming. I want to convert a decimal number to sign-magnitud

I do know how to do it on paper. The problem is when i do it on code. I get this error: incompatible types: possible lossy conversion from int to byte I know my binary number is getting saved in a String and i want to change those 0's to 1's and…
Hugo Rogue
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Signed Magnitude and 1's Complement

I have this problem I am doing where I have to convert this 8-bit signed binary number 10110100 into signed magnitude, 1's complement, and 2's complement. For signed magnitude I got the value to be -76. For 1's complement I know I have to flip all…
user5041486
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Compare lists Unions

List A = new List(); List B = new List(); List itemsremoved = ((A∩B)^c)-A; List itemsadded = ((A∩B)^c)-B; I want to know how to do a complement of the union A & B minus the elements of a list. Is…
sheepiiHD
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What is the logic of one\two complement representation of binary numers

I am trying to understand the logic behind the arithmetic of one\two complement. Why I can sum\subtract numbers with this method and get the right answer, and why all the issue of "carry" works in this two method as it works? Someone could help?
Victor
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Python:16 bit one's complement addition implementation

I implemented one's complement addition of 16 bit integers in python, however I am trying to see if there is a better way to do it. # This function returns a string of the bits (exactly 16 bits) # for the number (in base 10 passed to it) def…
Cauchy
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~ and - Javascript Operator Questions

I'm trying to write a program which will turn a input into binary, and the one's and two's complement of such input. I believe ~ should flip the bits and - should do the same plus adding a 1 in 1's value, yet the results are not as…
cyntrix
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