tribool.hpp File Reference

#include <boost/logic/tribool_fwd.hpp>
#include <boost/config.hpp>
#include <boost/detail/workaround.hpp>

Include dependency graph for tribool.hpp:

This graph shows which files directly or indirectly include this file:

Classes
struct	boost::logic::detail::indeterminate_t
	INTERNAL ONLY. More...
class	boost::logic::tribool
	A 3-state boolean type. More...

Namespaces
	boost
	Duration formatting facet for input.
	boost::logic
	boost::logic::detail
	INTERNAL ONLY.

Macros
#define	BOOST_TRIBOOL_THIRD_STATE(Name)
	Declare a new name for the third state of a tribool. More...

Typedefs
typedef bool(*	boost::logic::indeterminate_keyword_t )(tribool, detail::indeterminate_t)
	INTERNAL ONLY The type of the 'indeterminate' keyword. More...

Functions
bool	boost::logic::indeterminate (tribool x, detail::indeterminate_t dummy=detail::indeterminate_t())
	Keyword and test function for the indeterminate tribool value. More...
tribool	boost::logic::operator! (tribool x)
	Computes the logical negation of a tribool. More...
tribool	boost::logic::operator&& (tribool x, tribool y)
	Computes the logical conjuction of two tribools. More...
tribool	boost::logic::operator&& (tribool x, bool y)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator&& (bool x, tribool y)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator&& (indeterminate_keyword_t, tribool x)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator&& (tribool x, indeterminate_keyword_t)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator|| (tribool x, tribool y)
	Computes the logical disjunction of two tribools. More...
tribool	boost::logic::operator|| (tribool x, bool y)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator|| (bool x, tribool y)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator|| (indeterminate_keyword_t, tribool x)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator|| (tribool x, indeterminate_keyword_t)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator== (tribool x, tribool y)
	Compare tribools for equality. More...
tribool	boost::logic::operator== (tribool x, bool y)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator== (bool x, tribool y)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator== (indeterminate_keyword_t, tribool x)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator== (tribool x, indeterminate_keyword_t)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator!= (tribool x, tribool y)
	Compare tribools for inequality. More...
tribool	boost::logic::operator!= (tribool x, bool y)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator!= (bool x, tribool y)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator!= (indeterminate_keyword_t, tribool x)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
tribool	boost::logic::operator!= (tribool x, indeterminate_keyword_t)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...

Macro Definition Documentation

#define BOOST_TRIBOOL_THIRD_STATE

(

Name

)

Value:

inline bool                                                             \
Name(boost::logic::tribool x,                                           \
     boost::logic::detail::indeterminate_t =                            \
       boost::logic::detail::indeterminate_t())                         \
{ return x.value == boost::logic::tribool::indeterminate_value; }

Declare a new name for the third state of a tribool.

Use this macro to declare a new name for the third state of a tribool. This state can have any number of new names (in addition to indeterminate), all of which will be equivalent. The new name will be placed in the namespace in which the macro is expanded.

Example: BOOST_TRIBOOL_THIRD_STATE(true_or_false)

tribool x(true_or_false); // potentially set x if (true_or_false(x)) { // don't know what x is }