Man Page not2.3

                       Standard C++ Library
             Copyright 1998, Rogue Wave Software, Inc.

NAME

     not2

      - A function adaptor used to reverse the sense of a  binary
     predicate function object.

SYNOPSIS

     #include <functional>
     template <class Predicate>
     binary_negate<Predicate> not2 (const Predicate& pred);

DESCRIPTION

     not2 is a function adaptor, known as a negator, that takes a
     binary predicate function object as its argument and returns
     a binary predicate function object that is the complement of
     the  original. binary_negate is a function object class that
     includes a return type for the not2_negator.

     Note that not2 works only with  function  objects  that  are
     defined as subclasses of the class binary_function.

SEE ALSO

     binary_function,     binary_negate,     Negators,      not1,
     pointer_to_binary_function, unary_negate