///////////////////////////////////////////////////////////////////////////
// FILE: functional (Functional templates)
//
// =========================================================================
//
//                          Open Watcom Project
//
// Copyright (c) 2004-2014 The Open Watcom Contributors. All Rights Reserved.
//
//    This file is automatically generated. Do not edit directly.
//
// =========================================================================
//
// Description: This header is part of the C++ standard library. It
//              defines a number of functional-like templates and 
//              associated binders and adaptors.
///////////////////////////////////////////////////////////////////////////
#ifndef _FUNCTIONAL_INCLUDED
#define _FUNCTIONAL_INCLUDED

#ifndef _ENABLE_AUTODEPEND
 #pragma read_only_file;
#endif

#ifndef __cplusplus
 #error This header file requires C++
#endif

#ifndef _CSTDDEF_INCLUDED
 #include <cstddef>
#endif

namespace std {

    template< class Arg1, class Result >
    struct unary_function {
        typedef Arg1   argument_type;
        typedef Result result_type;
    };


    template< class Arg1, class Arg2, class Result >
    struct binary_function {
        typedef Arg1   first_argument_type;
        typedef Arg2   second_argument_type;
        typedef Result result_type;
    };


    template< class Type >
    struct plus : binary_function< Type, Type, Type > {
        Type operator( )( const Type &x, const Type &y ) const
            { return( x + y ); }
    };


    template< class Type >
    struct minus : binary_function< Type, Type, Type > {
        Type operator( )( const Type &x, const Type &y ) const
            { return( x - y ); }
    };


    template< class Type >
    struct multiplies : binary_function< Type, Type, Type > {
        Type operator( )( const Type &x, const Type &y ) const
            { return( x * y ); }
    };


    template< class Type >
    struct divides : binary_function< Type, Type, Type > {
        Type operator( )( const Type &x, const Type &y ) const
            { return( x / y ); }
    };


    template< class Type >
    struct modulus : binary_function< Type, Type, Type > {
        Type operator( )( const Type &x, const Type &y ) const
            { return( x % y ); }
    };


    template< class Type >
    struct negate : unary_function< Type, Type > {
        Type operator( )( const Type &x ) const
            { return( -x ); }
    };


    template< class Type >
    struct equal_to : binary_function< Type, Type, bool > {
        bool operator( )( const Type &x, const Type &y ) const
            { return( x == y ); }
    };


    template< class Type >
    struct not_equal_to : binary_function< Type, Type, bool > {
        bool operator( )( const Type &x, const Type &y ) const
            { return( x != y ); }
    };


    template< class Type >
    struct greater : binary_function< Type, Type, bool > {
        bool operator( )( const Type &x, const Type &y ) const
            { return( x > y ); }
    };


    template< class Type >
    struct less : binary_function< Type, Type, bool > {
        bool operator( )( const Type &x, const Type &y ) const
            { return( x < y ); }
    };


    template< class Type >
    struct greater_equal : binary_function< Type, Type, bool > {
        bool operator( )( const Type &x, const Type &y ) const
            { return( x >= y ); }
    };


    template< class Type >
    struct less_equal : binary_function< Type, Type, bool > {
        bool operator( )( const Type &x, const Type &y ) const
            { return( x <= y ); }
    };


    template< class Type >
    struct logical_and : binary_function< Type, Type, bool > {
        bool operator( )( const Type &x, const Type &y ) const
            { return( x && y ); }
    };


    template< class Type >
    struct logical_or : binary_function< Type, Type, bool > {
        bool operator( )( const Type &x, const Type &y ) const
            { return( x || y ); }
    };


    template< class Type >
    struct logical_not : unary_function< Type, bool > {
        bool operator( )( const Type &x ) const
            { return( !x ); }
    };


    template< class Predicate >
    class unary_negate : public
        unary_function< typename Predicate::argument_type, bool > {
        const Predicate &pred;
    public:
        explicit unary_negate( const Predicate &p ) : pred( p ) { }
        bool operator( )( const typename Predicate::argument_type &x ) const
            { return( !pred( x ) ); }
    };


    template< class Predicate >
    inline unary_negate< Predicate > not1( const Predicate &p )
        { return( unary_negate< Predicate >( p ) ); }


    template< class Predicate >
    class binary_negate : public
        binary_function< typename Predicate::first_argument_type,
                         typename Predicate::second_argument_type, 
                         bool > {
        const Predicate &pred;
    public:
        explicit binary_negate( const Predicate &p ) : pred( p ) { }
        bool operator( )( const typename Predicate::first_argument_type  &x,
                          const typename Predicate::second_argument_type &y ) const
            { return( !pred( x, y ) ); }
    };


    template< class Predicate >
    inline binary_negate< Predicate > not2( const Predicate &p )
        { return( binary_negate< Predicate >( p ) ); }


    template< class Operation >
    class binder1st : public
        unary_function< typename Operation::second_argument_type,
                        typename Operation::result_type > {
    protected:
        Operation op;
        typename Operation::first_argument_type value;
    public:
        binder1st( const Operation &x,
                   const typename Operation::first_argument_type &y ) 
            : op( x ), value( y ) { }
        typename Operation::result_type
        operator( )( const typename Operation::second_argument_type &x ) const
            { return( op( value, x ) ); }
    };


    template< class Operation, class Type >
    inline binder1st< Operation > bind1st( const Operation &x, const Type &y )
    {
        return( binder1st< Operation >(
            x, typename Operation::first_argument_type( y ) ) );
    }


    template< class Operation >
    class binder2nd : public
        unary_function< typename Operation::first_argument_type,
                        typename Operation::result_type > {
    protected:
        Operation op;
        typename Operation::second_argument_type value;
    public:
        binder2nd( const Operation &x,
                   const typename Operation::second_argument_type &y ) 
            : op( x ), value( y ) { }
        typename Operation::result_type
        operator( )( const typename Operation::first_argument_type &x ) const
            { return( op( x, value ) ); }
    };


    template< class Operation, class Type >
    inline binder2nd< Operation > bind2nd( const Operation &x, const Type &y )
    {
        return( binder2nd< Operation >(
            x, typename Operation::second_argument_type( y ) ) );
    }


    template< class Arg1, class Result >
    class pointer_to_unary_function : public
        unary_function< Arg1, Result > {
        Result ( *p )( Arg1 );
    public:
        explicit pointer_to_unary_function( Result ( *f )( Arg1 ) )
            : p( f ) { }
        Result operator( )( Arg1 x ) const
            { return( p( x ) ); }
    };


    template< class Arg1, class Arg2, class Result >
    class pointer_to_binary_function : public
        binary_function< Arg1, Arg2, Result > {
        Result ( *p )( Arg1, Arg2 );
    public:
        explicit pointer_to_binary_function( Result ( *f )( Arg1, Arg2 ) )
            : p( f ) { }
        Result operator( )( Arg1 x, Arg2 y ) const
            { return( p( x, y ) ); }
    };


    template< class Arg1, class Result >
    inline pointer_to_unary_function< Arg1, Result >
    ptr_fun( Result ( *f )( Arg1 ) )
        { return( pointer_to_unary_function< Arg1, Result >( f ) ); }


    template< class Arg1, class Arg2, class Result >
    inline pointer_to_binary_function< Arg1, Arg2, Result >
    ptr_fun( Result ( *f )( Arg1, Arg2 ) )
        { return( pointer_to_binary_function< Arg1, Arg2, Result >( f ) ); }


    template< class Result, class Klass >
    class mem_fun_t : public unary_function< Klass*, Result > {
        Result ( Klass::*p )( );
    public:
        explicit mem_fun_t( Result ( Klass::*f )( ) ) : p( f ) { }
        Result operator( )( Klass *x ) const
            { return( ( x->*p )( ) ); }
    };


    template< class Result, class Klass, class Arg >
    class mem_fun1_t : public binary_function< Klass*, Arg, Result > {
        Result ( Klass::*p )( Arg );
    public:
        explicit mem_fun1_t( Result ( Klass::*f )( Arg ) ) : p( f ) { }
        Result operator( )( Klass *x, Arg y ) const
            { return( ( x->*p )( y ) ); }
    };


    template< class Result, class Klass >
    inline mem_fun_t< Result, Klass > mem_fun( Result ( Klass::*f )( ) )
        { return( mem_fun_t< Result, Klass >( f ) ); }


    template< class Result, class Klass, class Arg >
    inline mem_fun1_t< Result, Klass, Arg >
    mem_fun( Result ( Klass::*f )( Arg ) )
        { return( mem_fun1_t< Result, Klass, Arg >( f ) ); }


    template< class Result, class Klass >
    class mem_fun_ref_t : public unary_function< Klass, Result > {
        Result ( Klass::*p )( );
    public:
        explicit mem_fun_ref_t( Result ( Klass::*f )( ) ) : p( f ) { }
        Result operator( )( Klass &x ) const
            { return( ( x.*p )( ) ); }
    };


    template< class Result, class Klass, class Arg >
    class mem_fun1_ref_t : public binary_function< Klass, Arg, Result > {
        Result ( Klass::*p )( Arg );
    public:
        explicit mem_fun1_ref_t( Result ( Klass::*f )( Arg ) ) : p( f ) { }
        Result operator( )( Klass &x, Arg y ) const
            { return( ( x.*p )( y ) ); }
    };


    template< class Result, class Klass >
    inline mem_fun_ref_t< Result, Klass >
    mem_fun_ref( Result ( Klass::*f )( ) )
        { return( mem_fun_ref_t< Result, Klass >( f ) ); }


    template< class Result, class Klass, class Arg >
    inline mem_fun1_ref_t< Result, Klass, Arg >
    mem_fun_ref( Result ( Klass::*f )( Arg ) )
        { return( mem_fun1_ref_t< Result, Klass, Arg >( f ) ); }


    template< class Result, class Klass >
    class const_mem_fun_t : public unary_function< const Klass*, Result > {
        Result ( Klass::*p )( ) const;
    public:
        explicit const_mem_fun_t( Result ( Klass::*f )( ) const ) : p( f ) { }
        Result operator( )( const Klass *x ) const
            { return( ( x->*p )( ) ); }
    };


    template< class Result, class Klass, class Arg >
    class const_mem_fun1_t :
        public binary_function< const Klass*, Arg, Result > {
        Result ( Klass::*p )( Arg ) const;
    public:
        explicit const_mem_fun1_t( Result ( Klass::*f )( Arg ) const ) : p( f ) { }
        Result operator( )( const Klass *x, Arg y ) const
            { return( ( x->*p )( y ) ); }
    };


    template< class Result, class Klass >
    inline const_mem_fun_t< Result, Klass >
    mem_fun( Result ( Klass::*f )( ) const )
        { return( const_mem_fun_t< Result, Klass >( f ) ); }


    template< class Result, class Klass, class Arg >
    inline const_mem_fun1_t< Result, Klass, Arg >
    mem_fun( Result ( Klass::*f )( Arg ) const )
        { return( const_mem_fun1_t< Result, Klass, Arg >( f ) ); }


    template< class Result, class Klass >
    class const_mem_fun_ref_t : public unary_function< Klass, Result > {
        Result ( Klass::*p )( ) const;
    public:
        explicit const_mem_fun_ref_t( Result ( Klass::*f )( ) const ) : p( f ) { }
        Result operator( )( const Klass &x ) const
            { return( ( x.*p )( ) ); }
    };


    template< class Result, class Klass, class Arg >
    class const_mem_fun1_ref_t : public binary_function< Klass, Arg, Result > {
        Result ( Klass::*p )( Arg ) const;
    public:
        explicit const_mem_fun1_ref_t( Result ( Klass::*f )( Arg ) const )
            : p( f ) { }
        Result operator( )( const Klass &x, Arg y ) const
            { return( ( x.*p )( y ) ); }
    };


    template< class Result, class Klass >
    inline const_mem_fun_ref_t< Result, Klass >
    mem_fun_ref( Result ( Klass::*f )( ) const )
        { return( const_mem_fun_ref_t< Result, Klass >( f ) ); }


    template< class Result, class Klass, class Arg >
    inline const_mem_fun1_ref_t< Result, Klass, Arg >
    mem_fun_ref( Result ( Klass::*f )( Arg ) const )
        { return( const_mem_fun1_ref_t< Result, Klass, Arg >( f ) ); }


    // ================================
    // struct hash with specializations
    // ================================

    template< class Type >
    struct hash : public unary_function< Type, size_t >
    {
        size_t operator( )( Type value ) const;
    };

    template< >
    struct hash< bool > : public unary_function< bool, size_t >
    {
        size_t operator( )( bool value ) const
            { return( static_cast< size_t >( value ) ); }
    };

    template< >
    struct hash< char > : public unary_function< char, size_t >
    {
        size_t operator( )( char value ) const
            { return( static_cast< size_t >( value ) ); }
    };

    template< >
    struct hash< signed char > : public unary_function< signed char, size_t >
    {
        size_t operator( )( signed char value ) const
            { return( static_cast< size_t >( value ) ); }
    };

    template< >
    struct hash< unsigned char > : public unary_function< unsigned char, size_t >
    {
        size_t operator( )( unsigned char value ) const
            { return( static_cast< size_t >( value ) ); }
    };

    // Assume wchar_t is not more than 16 bits.
    template< >
    struct hash< wchar_t > : public unary_function< wchar_t, size_t >
    {
        size_t operator( )( wchar_t value ) const
            { return( static_cast< size_t >( value ) ); }
    };

    template< >
    struct hash< short > : public unary_function< short, size_t >
    {
        size_t operator( )( short value ) const
            { return( static_cast< size_t >( value ) ); }
    };

    template< >
    struct hash< unsigned short > : public unary_function< unsigned short, size_t >
    {
        size_t operator( )( unsigned short value ) const
            { return( static_cast< size_t >( value ) ); }
    };

    // Assume size_t is always at least as wide as int.
    template< >
    struct hash< int > : public unary_function< int, size_t >
    {
        size_t operator( )( int value ) const
            { return( static_cast< size_t >( value ) ); }
    };

    // Assume size_t is always at least as wide as unsigned int.
    template< >
    struct hash< unsigned > : public unary_function< unsigned, size_t >
    {
        size_t operator( )( unsigned value ) const
            { return( static_cast< size_t >( value ) ); }
    };


    template< >
    struct hash< long > : public unary_function< long, size_t >
    {
        size_t operator( )( long value ) const
            { return( static_cast< size_t >( value ) ); }
    };

    template< >
    struct hash< unsigned long > : public unary_function< unsigned long, size_t >
    {
        size_t operator( )( unsigned long value ) const
            { return( static_cast< size_t >( value ) ); }
    };

    template< >
    struct hash< long long > : public unary_function< long long, size_t >
    {
        size_t operator( )( long long value ) const
        {
            long long result = value;
            result ^= (value & 0xFFFFFFFF00000000ULL) >> 32;
            return( static_cast< size_t >( result ) );
        }
    };

    template< >
    struct hash< unsigned long long > : public unary_function< unsigned long long, size_t >
    {
        size_t operator( )( unsigned long long value ) const
        {
            unsigned long long result = value;
            result ^= (value & 0xFFFFFFFF00000000ULL) >> 32;
            return( static_cast< size_t >( result ) );
        }
    };


    template< class Type >
    struct hash< Type * > : public unary_function< Type *, size_t >
    {
        size_t operator( )( Type *p ) const
            { return( static_cast< size_t >( p ) ); }
    };

} // namespace std

#endif
