FM / type_traits

/usr/include/boost/icl/type_traits

Name	Size	Mode	Actions
absorbs_identities.hpp	815	0644	edit dl rm
adds_inversely.hpp	998	0644	edit dl rm
codomain_type_of.hpp	1837	0644	edit dl rm
difference.hpp	701	0644	edit dl rm
difference_type_of.hpp	3343	0644	edit dl rm
domain_type_of.hpp	1442	0644	edit dl rm
element_type_of.hpp	2959	0644	edit dl rm
has_inverse.hpp	1041	0644	edit dl rm
has_set_semantics.hpp	1328	0644	edit dl rm
identity_element.hpp	1093	0644	edit dl rm
infinity.hpp	4499	0644	edit dl rm
interval_type_default.hpp	2095	0644	edit dl rm
interval_type_of.hpp	1467	0644	edit dl rm
is_associative_element_container.hpp	1139	0644	edit dl rm
is_asymmetric_interval.hpp	1819	0644	edit dl rm
is_combinable.hpp	18014	0644	edit dl rm
is_concept_equivalent.hpp	1345	0644	edit dl rm
is_container.hpp	1952	0644	edit dl rm
is_continuous.hpp	933	0644	edit dl rm
is_continuous_interval.hpp	866	0644	edit dl rm
is_discrete.hpp	2109	0644	edit dl rm
is_discrete_interval.hpp	858	0644	edit dl rm
is_element_container.hpp	1781	0644	edit dl rm
is_icl_container.hpp	1177	0644	edit dl rm
is_increasing.hpp	978	0644	edit dl rm
is_interval.hpp	5823	0644	edit dl rm
is_interval_container.hpp	1486	0644	edit dl rm
is_interval_joiner.hpp	849	0644	edit dl rm
is_interval_separator.hpp	861	0644	edit dl rm
is_interval_splitter.hpp	857	0644	edit dl rm
is_key_container_of.hpp	2879	0644	edit dl rm
is_map.hpp	800	0644	edit dl rm
is_numeric.hpp	2859	0644	edit dl rm
is_set.hpp	869	0644	edit dl rm
is_total.hpp	780	0644	edit dl rm
no_type.hpp	654	0644	edit dl rm
predicate.hpp	1480	0644	edit dl rm
rep_type_of.hpp	2162	0644	edit dl rm
segment_type_of.hpp	1454	0644	edit dl rm
size.hpp	693	0644	edit dl rm
size_type_of.hpp	2189	0644	edit dl rm
succ_pred.hpp	2365	0644	edit dl rm
to_string.hpp	1441	0644	edit dl rm
type_to_string.hpp	3494	0644	edit dl rm
unit_element.hpp	1519	0644	edit dl rm
value_size.hpp	1685	0644	edit dl rm

Edit: /usr/include/boost/icl/type_traits/unit_element.hpp (1519B)

/*-----------------------------------------------------------------------------+
Copyright (c) 2008-2010: 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_TYPE_TRAITS_UNIT_ELEMENT_HPP_JOFA_080912
#define BOOST_ICL_TYPE_TRAITS_UNIT_ELEMENT_HPP_JOFA_080912

#include <string>
#include <boost/icl/type_traits/identity_element.hpp>
#include <boost/icl/type_traits/succ_pred.hpp>

namespace boost{ namespace icl
{
    template <class Type> struct unit_element{ static Type value(); };

template<> inline bool   unit_element<bool>::value()   { return true;}
    template<> inline float  unit_element<float>::value()  { return 1.0; }
    template<> inline double unit_element<double>::value() { return 1.0; }
    template<> inline long double unit_element<long double>::value() 
                                                           { return 1.0; }
    
    // Smallest 'visible' string that is greater than the empty string.
    template <>    
    inline std::string unit_element<std::string>::value()
    { return std::string(" "); }

template <class Type> 
    inline Type unit_element<Type>::value()
    { return icl::succ(identity_element<Type>::value()); }

}} // namespace boost icl

#endif

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