Re: What is your opinion about unsigned int u = -2 ?

On 08/08/2024 01:48, Lawrence D'Oliveiro wrote:

On Sun, 4 Aug 2024 20:29:21 +0200, Bonita Montero wrote:
 

Since the mid of the 70s all new machines work all with 2s complement.
There will be never computers with different notations since the 2s
complement makes the circuit design easier.

 This may be hard to believe, but I think in the early days 2s-complement
arithmetic was seen as something exotic, like advanced mathematics or
something. To some, sign-magnitude seemed more “intuitive”.
 As for ones-complement ... I don’t know to explain that.

Think about negating a value.  For two's complement, that means inverting each bit and then adding 1.  For sign-magnitude, you invert the sign bit.  For ones' complement, you invert each bit.