Re: [boost] New Boost.XInt Library, request preliminary review

Subject: Re: [boost] New Boost.XInt Library, request preliminary review
From: Peter Dimov (pdimov_at_[hidden])
Date: 2010-03-30 08:23:53

Stewart, Robert wrote:
> How does one mix code wanting exceptions with code not wanting them?

Pretty easy (bad_alloc aside (*)), since the only way to get an exception 
when doing integer operations is to divide by zero (**). So code not wanting 
exceptions needs only not divide by zero - problem solved. This of course 
assumes that the exceptions are not delayed via a signaling NaN with the 
express purpose of making your life difficult by turning unary op+/- into a 
throwing operation.

(*) And by the way, out of memory is not overflow. It's possible to run out 
of memory while computing an integer that is smaller than another integer 
that already has been computed. This is not what overflow means.

(**) OK, sqrt(-1) throws as well.