Edit - Software Engineering Stack Exchange

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

Required fields*

Rev

In the part where you say "The two's complement of an N-bit number x is defined as 2^N - x" what is the valid range of x?

Jack
– Jack

2021-08-19 07:09:54 +00:00
Commented Aug 19, 2021 at 7:09
@Jack From -2^(N-1) to 2^(N-1) - 1. E.g. a 8-bit signed number in two's complement can range from -128 to +127 (inclusive).

Roel Schroeven
– Roel Schroeven

2021-08-19 10:32:23 +00:00
Commented Aug 19, 2021 at 10:32
1

The C Standard requires that one of four methods is used: Signed magnitude, one’s complement, two’s complement, and two’s complement without the largest negative number.

gnasher729
– gnasher729

2021-08-20 06:26:16 +00:00
Commented Aug 20, 2021 at 6:26

Add a comment |

Correct minor typos or mistakes
Clarify meaning without changing it
Add related resources or links
Always respect the author’s intent
Don’t use edits to reply to the author

create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)

<https://example.com>

[example](https://example.com)

<a href="https://example.com">example</a>

formatting help »
answering help »