.\" ident @(#)unary_negate.3
.\" Standard Template Library
.\" $$RW_INSERT_HEADER "slyrs.man"
.TH unary_negate 3C++ "02 Apr 1998" "Rogue Wave Software" "-"
.ce2
Standard C++ Library   
Copyright 1998, Rogue Wave Software, Inc.   

.SH NAME

\f2unary_negate\fP

\ - A function object that returns the complement of the result of its unary predicate 



.SH  SYNOPSIS


.br
#include<functional>
.br
template <class Predicate>
.br
class unary_negate : public 
.RE
.RS 5
unary_function<typename Predicate::argument_type,
.RE
.RS 20
bool>;



.SH  DESCRIPTION


unary_negate is a function object class that includes a return type for the function adapter not1. not1 is a function adapter, known as a negator, that takes a unary predicate function object as its argument and returns a unary predicate function object that is the complement of the original. 

Note that not1 works only with function objects that are defined as subclasses of the class unary_function.



.SH  INTERFACE


.RE
.RS 0
template <class Predicate>
.br
class unary_negate : public
.RE
.RS 2
unary_function<typename Predicate::argument_type, bool> {
.RE
.RS 0
public:
.RE
.RS 2
explicit unary_negate (const Predicate&);
.br
bool operator() (const typename
.RE
.RS 19
Predicate::argument_type&) const;
.RE
.RS 0
};
.br

.br
template<class Predicate>
.br
unary_negate <Predicate> not1 (const Predicate&);



.SH  CONSTRUCTORS



.br
explicit 
.br
unary_negate(const Predicate& pred);
.RE
.RS 3


Constructs a \f2unary_negate\fP object from predicate \f2pred\fP.

.RE



.SH  OPERATORS



.br
bool 
.br
operator()(const typename Predicate::argument_type& x)
.RE
.RS 10
const;
.RE
.RS 3


Returns the result of \f2unary_negate\fP<predicate>\f2(pred)\fP.

.RE



.SH  SEE ALSO


not1, not2, unary_function, binary_negate