_function.h

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  typedef typename _Operation::first_argument_type _Arg1_type;
  return binder1st<_Operation>(__fn, _Arg1_type(__x));
}

template <class _Operation>
class binder2nd
  : public unary_function<typename __BINARY_ARG(_Operation, first_argument_type),
                          typename __BINARY_ARG(_Operation, result_type)> {
  typedef unary_function<typename __BINARY_ARG(_Operation, first_argument_type),
                         typename __BINARY_ARG(_Operation, result_type)> _Base;
public:
  typedef typename _Base::argument_type argument_type;
  typedef typename _Base::result_type result_type;
private:
  typedef typename __call_traits<argument_type>::param_type _ArgParamType;
  typedef typename __call_traits<argument_type>::const_param_type _ConstArgParamType;
  typedef typename __call_traits<typename _Operation::second_argument_type>::const_param_type _ValueParamType;
protected:
  //op is a Standard name (20.3.6.3), do no make it STLport naming convention compliant.
  _Operation op;
  typename _Operation::second_argument_type value;
public:
  binder2nd(const _Operation& __x, _ValueParamType __y)
      : op(__x), value(__y) {}

  result_type operator()(_ConstArgParamType __x) const
  { return op(__x, value); }
  // DR 109 Missing binders for non-const sequence elements
  result_type operator()(_ArgParamType __x) const
  { return op(__x, value); }
};

template <class _Operation, class _Tp>
inline binder2nd<_Operation>
bind2nd(const _Operation& __fn, const _Tp& __x) {
  typedef typename _Operation::second_argument_type _Arg2_type;
  return binder2nd<_Operation>(__fn, _Arg2_type(__x));
}

#if !defined (_STLP_NO_EXTENSIONS)
// unary_compose and binary_compose (extensions, not part of the standard).

template <class _Operation1, class _Operation2>
class unary_compose :
  public unary_function<typename __UNARY_ARG(_Operation2, argument_type),
                        typename __UNARY_ARG(_Operation1, result_type)> {
  typedef unary_function<typename __UNARY_ARG(_Operation2, argument_type),
                         typename __UNARY_ARG(_Operation1, result_type)> _Base;
public:
  typedef typename _Base::argument_type argument_type;
  typedef typename _Base::result_type result_type;
private:
  typedef typename __call_traits<argument_type>::const_param_type _ArgParamType;
protected:
  _Operation1 _M_fn1;
  _Operation2 _M_fn2;
public:
  unary_compose(const _Operation1& __x, const _Operation2& __y)
    : _M_fn1(__x), _M_fn2(__y) {}

  result_type operator()(_ArgParamType __x) const {
    return _M_fn1(_M_fn2(__x));
  }
};

template <class _Operation1, class _Operation2>
inline unary_compose<_Operation1,_Operation2>
compose1(const _Operation1& __fn1, const _Operation2& __fn2) {
  return unary_compose<_Operation1,_Operation2>(__fn1, __fn2);
}

template <class _Operation1, class _Operation2, class _Operation3>
class binary_compose :
    public unary_function<typename __UNARY_ARG(_Operation2, argument_type),
                          typename __BINARY_ARG(_Operation1, result_type)> {
  typedef unary_function<typename __UNARY_ARG(_Operation2, argument_type),
                         typename __BINARY_ARG(_Operation1, result_type)> _Base;
public:
  typedef typename _Base::argument_type argument_type;
  typedef typename _Base::result_type result_type;
private:
  typedef typename __call_traits<argument_type>::const_param_type _ArgParamType;
protected:
  _Operation1 _M_fn1;
  _Operation2 _M_fn2;
  _Operation3 _M_fn3;
public:
  binary_compose(const _Operation1& __x, const _Operation2& __y,
                 const _Operation3& __z)
    : _M_fn1(__x), _M_fn2(__y), _M_fn3(__z) { }

  result_type operator()(_ArgParamType __x) const {
    return _M_fn1(_M_fn2(__x), _M_fn3(__x));
  }
};

template <class _Operation1, class _Operation2, class _Operation3>
inline binary_compose<_Operation1, _Operation2, _Operation3>
compose2(const _Operation1& __fn1, const _Operation2& __fn2,
         const _Operation3& __fn3) {
  return binary_compose<_Operation1,_Operation2,_Operation3>(__fn1, __fn2, __fn3);
}

// identity is an extension: it is not part of the standard.
template <class _Tp> struct identity : public _STLP_PRIV _Identity<_Tp> {};
// select1st and select2nd are extensions: they are not part of the standard.
template <class _Pair> struct select1st : public _STLP_PRIV _Select1st<_Pair> {};
template <class _Pair> struct select2nd : public _STLP_PRIV _Select2nd<_Pair> {};

template <class _Arg1, class _Arg2>
struct project1st : public _STLP_PRIV _Project1st<_Arg1, _Arg2> {};

template <class _Arg1, class _Arg2>
struct project2nd : public _STLP_PRIV _Project2nd<_Arg1, _Arg2> {};


// constant_void_fun, constant_unary_fun, and constant_binary_fun are
// extensions: they are not part of the standard.  (The same, of course,
// is true of the helper functions constant0, constant1, and constant2.)

_STLP_MOVE_TO_PRIV_NAMESPACE

template <class _Result>
struct _Constant_void_fun {
  typedef _Result result_type;
  result_type _M_val;

  _Constant_void_fun(const result_type& __v) : _M_val(__v) {}
  const result_type& operator()() const { return _M_val; }
};

_STLP_MOVE_TO_STD_NAMESPACE

template <class _Result>
struct constant_void_fun : public _STLP_PRIV _Constant_void_fun<_Result> {
  constant_void_fun(const _Result& __v)
    : _STLP_PRIV _Constant_void_fun<_Result>(__v) {}
};

template <class _Result, _STLP_DFL_TMPL_PARAM( _Argument , _Result) >
struct constant_unary_fun : public _STLP_PRIV _Constant_unary_fun<_Result, _Argument> {
  constant_unary_fun(const _Result& __v)
    : _STLP_PRIV _Constant_unary_fun<_Result, _Argument>(__v) {}
};

template <class _Result, _STLP_DFL_TMPL_PARAM( _Arg1 , _Result), _STLP_DFL_TMPL_PARAM( _Arg2 , _Arg1) >
struct constant_binary_fun
  : public _STLP_PRIV _Constant_binary_fun<_Result, _Arg1, _Arg2> {
  constant_binary_fun(const _Result& __v)
    : _STLP_PRIV _Constant_binary_fun<_Result, _Arg1, _Arg2>(__v) {}
};

template <class _Result>
inline constant_void_fun<_Result> constant0(const _Result& __val) {
  return constant_void_fun<_Result>(__val);
}

template <class _Result>
inline constant_unary_fun<_Result,_Result> constant1(const _Result& __val) {
  return constant_unary_fun<_Result,_Result>(__val);
}

template <class _Result>
inline constant_binary_fun<_Result,_Result,_Result>
constant2(const _Result& __val) {
  return constant_binary_fun<_Result,_Result,_Result>(__val);
}

// subtractive_rng is an extension: it is not part of the standard.
// Note: this code assumes that int is 32 bits.
class subtractive_rng : public unary_function<_STLP_UINT32_T, _STLP_UINT32_T> {
private:
  _STLP_UINT32_T _M_table[55];
  _STLP_UINT32_T _M_index1;
  _STLP_UINT32_T _M_index2;
public:
  _STLP_UINT32_T operator()(_STLP_UINT32_T __limit) {
    _M_index1 = (_M_index1 + 1) % 55;
    _M_index2 = (_M_index2 + 1) % 55;
    _M_table[_M_index1] = _M_table[_M_index1] - _M_table[_M_index2];
    return _M_table[_M_index1] % __limit;
  }

  void _M_initialize(_STLP_UINT32_T __seed) {
    _STLP_UINT32_T __k = 1;
    _M_table[54] = __seed;
    _STLP_UINT32_T __i;
    for (__i = 0; __i < 54; __i++) {
        _STLP_UINT32_T __ii = (21 * (__i + 1) % 55) - 1;
        _M_table[__ii] = __k;
        __k = __seed - __k;
        __seed = _M_table[__ii];
    }
    for (int __loop = 0; __loop < 4; __loop++) {
        for (__i = 0; __i < 55; __i++)
            _M_table[__i] = _M_table[__i] - _M_table[(1 + __i + 30) % 55];
    }
    _M_index1 = 0;
    _M_index2 = 31;
  }

  subtractive_rng(unsigned int __seed) { _M_initialize(__seed); }
  subtractive_rng() { _M_initialize(161803398ul); }
};

#endif /* _STLP_NO_EXTENSIONS */

_STLP_END_NAMESPACE

#include <stl/_function_adaptors.h>

#endif /* _STLP_INTERNAL_FUNCTION_H */

// Local Variables:
// mode:C++
// End: