Edit: /usr/include/boost/icl/open_interval.hpp (4442B)
/*-----------------------------------------------------------------------------+
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
#include
#include
#include
#include
#include
namespace boost{namespace icl
{
template
class open_interval
{
public:
typedef open_interval type;
typedef DomainT domain_type;
typedef ICL_COMPARE_DOMAIN(Compare,DomainT) domain_compare;
public:
//==========================================================================
//= Construct, copy, destruct
//==========================================================================
/** Default constructor; yields an empty interval (0,0). */
open_interval()
: _lwb(identity_element::value()), _upb(identity_element::value())
{
BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept));
BOOST_CONCEPT_ASSERT((LessThanComparableConcept));
}
//NOTE: Compiler generated copy constructor is used
/** Constructor for an open singleton interval (val-1,val+1) */
explicit open_interval(const DomainT& val)
: _lwb(pred(val)), _upb(succ(val))
{
BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept));
BOOST_CONCEPT_ASSERT((LessThanComparableConcept));
// Only for discrete types this ctor creates an interval containing
// a single element only.
BOOST_STATIC_ASSERT((icl::is_discrete::value));
BOOST_ASSERT((numeric_minimum::value >
::is_less_than(val) ));
}
/** Interval from low to up with bounds bounds */
open_interval(const DomainT& low, const DomainT& up) :
_lwb(low), _upb(up)
{
BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept));
BOOST_CONCEPT_ASSERT((LessThanComparableConcept));
}
DomainT lower()const{ return _lwb; }
DomainT upper()const{ return _upb; }
private:
DomainT _lwb;
DomainT _upb;
};
//==============================================================================
//=T open_interval -> concept intervals
//==============================================================================
template
struct interval_traits< icl::open_interval >
{
typedef DomainT domain_type;
typedef ICL_COMPARE_DOMAIN(Compare,DomainT) domain_compare;
typedef icl::open_interval 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
struct interval_bound_type< open_interval >
{
typedef interval_bound_type type;
BOOST_STATIC_CONSTANT(bound_type, value = interval_bounds::static_open);
};
template
struct type_to_string >
{
static std::string apply()
{ return "(I)<"+ type_to_string::apply() +">"; }
};
template
struct value_size >
{
static std::size_t apply(const icl::open_interval&)
{ return 2; }
};
}} // namespace icl boost
#endif