/usr/include/boost/icl/open_interval.hpp is in libboost1.46-dev 1.46.1-7ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | /*-----------------------------------------------------------------------------+
Copyright (c) 2010-2010: Joachim Faulhaber
+------------------------------------------------------------------------------+
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENCE.txt or copy at
http://www.boost.org/LICENSE_1_0.txt)
+-----------------------------------------------------------------------------*/
#ifndef BOOST_ICL_OPEN_INTERVAL_HPP_JOFA_100930
#define BOOST_ICL_OPEN_INTERVAL_HPP_JOFA_100930
#include <functional>
#include <boost/concept/assert.hpp>
#include <boost/icl/concept/interval.hpp>
#include <boost/icl/type_traits/value_size.hpp>
#include <boost/icl/type_traits/type_to_string.hpp>
namespace boost{namespace icl
{
template <class DomainT,
ICL_COMPARE Compare = ICL_COMPARE_INSTANCE(std::less, DomainT)>
class open_interval
{
public:
typedef open_interval<DomainT,Compare> type;
typedef DomainT domain_type;
public:
//==========================================================================
//= Construct, copy, destruct
//==========================================================================
/** Default constructor; yields an empty interval <tt>(0,0)</tt>. */
open_interval()
: _lwb(identity_element<DomainT>::value()), _upb(identity_element<DomainT>::value())
{
BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept<DomainT>));
BOOST_CONCEPT_ASSERT((LessThanComparableConcept<DomainT>));
}
//NOTE: Compiler generated copy constructor is used
/** Constructor for an open singleton interval <tt>(val-1,val+1)</tt> */
explicit open_interval(const DomainT& val)
: _lwb(pred(val)), _upb(succ(val))
{
BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept<DomainT>));
BOOST_CONCEPT_ASSERT((LessThanComparableConcept<DomainT>));
// Only for discrete types this ctor creates an interval containing
// a single element only.
BOOST_STATIC_ASSERT((icl::is_discrete<DomainT>::value));
BOOST_ASSERT((numeric_minimum<DomainT, is_numeric<DomainT>::value >::is_less_than(val) ));
}
/** Interval from <tt>low</tt> to <tt>up</tt> with bounds <tt>bounds</tt> */
open_interval(const DomainT& low, const DomainT& up) :
_lwb(low), _upb(up)
{
BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept<DomainT>));
BOOST_CONCEPT_ASSERT((LessThanComparableConcept<DomainT>));
}
DomainT lower()const{ return _lwb; }
DomainT upper()const{ return _upb; }
private:
DomainT _lwb;
DomainT _upb;
};
//==============================================================================
//=T open_interval -> concept intervals
//==============================================================================
template<class DomainT, ICL_COMPARE Compare>
struct interval_traits< icl::open_interval<DomainT, Compare> >
{
typedef DomainT domain_type;
typedef ICL_COMPARE_DOMAIN(Compare,DomainT) domain_compare;
typedef icl::open_interval<DomainT, Compare> interval_type;
static interval_type construct(const domain_type& lo, const domain_type& up)
{
return interval_type(lo, up);
}
static domain_type lower(const interval_type& inter_val){ return inter_val.lower(); };
static domain_type upper(const interval_type& inter_val){ return inter_val.upper(); };
};
//==============================================================================
//= Type traits
//==============================================================================
template <class DomainT, ICL_COMPARE Compare>
struct interval_bound_type< open_interval<DomainT,Compare> >
{
typedef interval_bound_type type;
BOOST_STATIC_CONSTANT(bound_type, value = interval_bounds::static_open);
};
template <class DomainT, ICL_COMPARE Compare>
struct type_to_string<icl::open_interval<DomainT,Compare> >
{
static std::string apply()
{ return "(I)<"+ type_to_string<DomainT>::apply() +">"; }
};
template<class DomainT, ICL_COMPARE Compare>
struct value_size<icl::open_interval<DomainT,Compare> >
{
static std::size_t apply(const icl::open_interval<DomainT>& value)
{ return 2; }
};
}} // namespace icl boost
#endif
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