Subject: Re: [boost] Is there interest in portable integer overflow detection, with policy based handling?
From: John Bytheway (jbytheway+boost_at_[hidden])
Date: 2012-02-22 14:04:34
On 22/02/12 02:00, Ben Robinson wrote:
> On Tue, Feb 21, 2012 at 9:18 AM, Antony Polukhin <antoshkka_at_[hidden]>wrote:
>> How fast is your library? Does it support unsigned long long int
>> overflow detection?
>>
>
> The library is meta-programmed with respect to the data types involved in
> each overloaded math operation, taking advantage is performance savings,
> such as when both data types are unsigned (see my more complete performance
> response above to a previous email).
>
> Addition overflow detection for example involves a single subtract, along
> with from one to three compares.
Would you be open to providing assembly implementations to supplement
the existing portable implementation if there was demand and they were
faster?
John Bytheway