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## Function template operator-

boost::interprocess::operator-

## Synopsis

    // In header: <boost/interprocess/offset_ptr.hpp>

    template<typename T1, typename P1, typename O1, std::size_t A1, typename T2,
             typename P2, typename O2, std::size_t A2>
      offset_ptr< T1, P1, O1, A1 >::difference_type
      operator-(const offset_ptr< T1, P1, O1, A1 > & pt,
                const offset_ptr< T2, P2, O2, A2 > & pt2);

## Description

`offset_ptr` - `offset_ptr` operation