[Boost-users] [icl] joining two simple intervals

Subject: [Boost-users] [icl] joining two simple intervals
From: Olaf Krzikalla (olaf.krzikalla_at_[hidden])
Date: 2013-07-22 11:37:41

Hi,

I just tried and failed to find a simple way to compute the upper and 
lower bounds of some interval_sets:

typedef boost::icl::interval_set<int> list_type;
typedef list_type::value_type interval;

void add_region(interval& av, const list_type& reg)
{
   av += reg; // didn't work
   if (!reg.empty())
   {
     // didn't work either:
     av += tAddressInterval(
             reg.begin()->lower(),
             (--reg.end())->upper()));

     // this one works:
     av = tAddressInterval(std::min(av.lower(), reg.begin()->lower()),
                           std::max(av.lower(), (--reg.end())->upper()));
   }
}

My workaround doesn't even respect the boundary types.
I wonder if there is not a simpler way for such a fundamental tasks.

Best regards
Olaf