How to check for overflow when adding/multiplying numbers?

Dave P. dave287091 at
Mon Dec 6 20:03:11 UTC 2021

On Monday, 6 December 2021 at 18:38:37 UTC, Ola Fosheim Grøstad 
> On Monday, 6 December 2021 at 17:46:35 UTC, Dave P. wrote:
>> I’m porting some C code which uses the gcc intrinsics to do a 
>> multiply/add with overflow checking. See 
>> [here]( for reference. Is there a D equivalent?
> There is:
> I have never used it, so I don't know how well it performs.

That seems to fit the bill.


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