Re: Should exceeding the range of Integer wrap around a la C?

[Jere <jhb.chat@gmail.com>]

On Monday, May 21, 2018 at 3:11:45 PM UTC-4, Paul Rubin wrote:
> > Should exceeding the range of Integer wrap around a la C?
> SNIPPED..
> 
> In C, unsigned integer overflow is undefined behaviour, like a subscript
> overflow.  Wraparound is one common result because of how machine
> arithmetic works, but it is not guaranteed.  The program could instead
> crash, or delete your files, or anything else.  See here:
> 
> http://blog.llvm.org/2011/05/what-every-c-programmer-should-know.html

Just wanted to point this out because I think you have a typo, but 
overflow for unsigned integers is completely defined in the C standard.
It is considered wraparound logic [1].  Signed integer overflow is 
undefined behavior however.

[1] Section 6.2.5/9 of the C11 standard