std_valarray.h   [plain text]

// The template and inlines for the -*- C++ -*- valarray class.

// Copyright (C) 1997-1999 Cygnus Solutions
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING.  If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.

// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.

// Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>

#ifndef __STD_VALARRAY__
#define __STD_VALARRAY__
#define _G_NO_VALARRAY_TEMPLATE_EXPORT 1

#include <cstddef>
#include <cmath>
#include <cstdlib>
#include <numeric>
#include <functional>
#include <algorithm>

#ifndef alloca
#ifdef __GNUC__
#define alloca __builtin_alloca
#else /* not GNU C.  */
#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi)
#include <alloca.h>
#else /* not sparc */
#if defined (MSDOS) && !defined (__TURBOC__)
#include <malloc.h>
#else /* not MSDOS, or __TURBOC__ */
#if defined(_AIX)
#include <malloc.h>
 #pragma alloca
#else /* not MSDOS, __TURBOC__, or _AIX */
#ifdef __hpux
#endif /* __hpux */
#endif /* not _AIX */
#endif /* not MSDOS, or __TURBOC__ */
#endif /* not sparc.  */
#endif /* not GNU C.  */
#endif /* alloca not defined.  */

extern "C" {
    void* alloca(size_t);
}


extern "C++" {

template<class _Clos, typename _Tp> class _Expr;

template<typename _Tp1, typename _Tp2> class _ValArray;    

template<template<class> class _Oper,
    template<class, class> class _Meta, class _Dom> struct _UnClos;

template<template<class> class _Oper,
    template<class, class> class _Meta1,
    template<class, class> class _Meta2,
    class _Dom1, class _Dom2> class _BinClos;

template<template<class, class> class _Meta, class _Dom> class _SClos;

template<template<class, class> class _Meta, class _Dom> class _GClos;
    
template<template<class, class> class _Meta, class _Dom> class _IClos;
    
template<template<class, class> class _Meta, class _Dom> class _ValFunClos;

template<template<class, class> class _Meta, class _Dom> class _RefFunClos;

template<class _Tp> struct _Unary_plus;
template<class _Tp> struct _Bitwise_and;
template<class _Tp> struct _Bitwise_or;
template<class _Tp> struct _Bitwise_xor;  
template<class _Tp> struct _Bitwise_not;
template<class _Tp> struct _Shift_left;
template<class _Tp> struct _Shift_right;

template<class _Tp> class valarray;   // An array of type _Tp
class slice;                          // BLAS-like slice out of an array
template<class _Tp> class slice_array;
class gslice;                         // generalized slice out of an array
template<class _Tp> class gslice_array;
template<class _Tp> class mask_array;     // masked array
template<class _Tp> class indirect_array; // indirected array

} // extern "C++"

#include <std/valarray_array.h>
#include <std/valarray_meta.h>

extern "C++" {

template<class _Tp> class valarray
{
public:
    typedef _Tp value_type;
    
    // _lib.valarray.cons_ construct/destroy:
    valarray();
    explicit valarray(size_t);
    valarray(const _Tp&, size_t);
    valarray(const _Tp* __restrict__, size_t);
    valarray(const valarray&);
    valarray(const slice_array<_Tp>&);
    valarray(const gslice_array<_Tp>&);
    valarray(const mask_array<_Tp>&);
    valarray(const indirect_array<_Tp>&);
    template<class _Dom>
    valarray(const _Expr<_Dom,_Tp>& __e);
    ~valarray();
    
    // _lib.valarray.assign_ assignment:
    valarray<_Tp>& operator=(const valarray<_Tp>&);
    valarray<_Tp>& operator=(const _Tp&);
    valarray<_Tp>& operator=(const slice_array<_Tp>&);
    valarray<_Tp>& operator=(const gslice_array<_Tp>&);
    valarray<_Tp>& operator=(const mask_array<_Tp>&);
    valarray<_Tp>& operator=(const indirect_array<_Tp>&);
    
    template<class _Dom> valarray<_Tp>&
    operator= (const _Expr<_Dom,_Tp>&);
    
    // _lib.valarray.access_ element access:
    _Tp                 operator[](size_t) const;
    _Tp&                operator[](size_t);		
    // _lib.valarray.sub_ subset operations:
    _Expr<_SClos<_ValArray,_Tp>, _Tp> operator[](slice) const;
    slice_array<_Tp>    operator[](slice);
    _Expr<_GClos<_ValArray,_Tp>, _Tp> operator[](const gslice&) const;
    gslice_array<_Tp>   operator[](const gslice&);
    valarray<_Tp>     	 operator[](const valarray<bool>&) const;
    mask_array<_Tp>     operator[](const valarray<bool>&);
    _Expr<_IClos<_ValArray, _Tp>, _Tp>
    operator[](const valarray<size_t>&) const;
    indirect_array<_Tp> operator[](const valarray<size_t>&);
    
    // _lib.valarray.unary_ unary operators:
    _Expr<_UnClos<_Unary_plus,_ValArray,_Tp>,_Tp>  operator+ () const;
    _Expr<_UnClos<negate,_ValArray,_Tp>,_Tp> operator- () const;
    _Expr<_UnClos<_Bitwise_not,_ValArray,_Tp>,_Tp> operator~ () const;
    _Expr<_UnClos<logical_not,_ValArray,_Tp>,bool> operator! () const;
    
    // _lib.valarray.cassign_ computed assignment:
    valarray<_Tp>& operator*= (const _Tp&);
    valarray<_Tp>& operator/= (const _Tp&);
    valarray<_Tp>& operator%= (const _Tp&);
    valarray<_Tp>& operator+= (const _Tp&);
    valarray<_Tp>& operator-= (const _Tp&);
    valarray<_Tp>& operator^= (const _Tp&);
    valarray<_Tp>& operator&= (const _Tp&);
    valarray<_Tp>& operator|= (const _Tp&);
    valarray<_Tp>& operator<<=(const _Tp&);
    valarray<_Tp>& operator>>=(const _Tp&);
    valarray<_Tp>& operator*= (const valarray<_Tp>&);
    valarray<_Tp>& operator/= (const valarray<_Tp>&);
    valarray<_Tp>& operator%= (const valarray<_Tp>&);
    valarray<_Tp>& operator+= (const valarray<_Tp>&);
    valarray<_Tp>& operator-= (const valarray<_Tp>&);
    valarray<_Tp>& operator^= (const valarray<_Tp>&);
    valarray<_Tp>& operator|= (const valarray<_Tp>&);
    valarray<_Tp>& operator&= (const valarray<_Tp>&);
    valarray<_Tp>& operator<<=(const valarray<_Tp>&);
    valarray<_Tp>& operator>>=(const valarray<_Tp>&);

    template<class _Dom>
    valarray<_Tp>& operator*= (const _Expr<_Dom,_Tp>&);
    template<class _Dom>
       valarray<_Tp>& operator/= (const _Expr<_Dom,_Tp>&);
    template<class _Dom>
       valarray<_Tp>& operator%= (const _Expr<_Dom,_Tp>&);
    template<class _Dom>
       valarray<_Tp>& operator+= (const _Expr<_Dom,_Tp>&);
    template<class _Dom>
       valarray<_Tp>& operator-= (const _Expr<_Dom,_Tp>&);
    template<class _Dom>
       valarray<_Tp>& operator^= (const _Expr<_Dom,_Tp>&);
    template<class _Dom>
       valarray<_Tp>& operator|= (const _Expr<_Dom,_Tp>&);
    template<class _Dom>
       valarray<_Tp>& operator&= (const _Expr<_Dom,_Tp>&);
    template<class _Dom>
       valarray<_Tp>& operator<<=(const _Expr<_Dom,_Tp>&);
    template<class _Dom>
       valarray<_Tp>& operator>>=(const _Expr<_Dom,_Tp>&);

      
    // _lib.valarray.members_ member functions:
    size_t size() const;
    _Tp    sum() const;	
    _Tp    min() const;	
    _Tp    max() const;	
    
    // FIXME: Extension
    _Tp    product () const;

    valarray<_Tp> shift (int) const;
    valarray<_Tp> cshift(int) const;
    _Expr<_ValFunClos<_ValArray,_Tp>,_Tp> apply(_Tp func(_Tp)) const;
    _Expr<_RefFunClos<_ValArray,_Tp>,_Tp> apply(_Tp func(const _Tp&)) const;
    void resize(size_t __size, _Tp __c = _Tp());
    
private:
    size_t _M_size;
    _Tp* __restrict__ _M_data;

    friend class _Array<_Tp>;
};


template<typename _Tp> struct _Unary_plus : unary_function<_Tp,_Tp> {
    _Tp operator() (const _Tp& __t) const { return __t; }
};

template<typename _Tp> struct _Bitwise_and : binary_function<_Tp,_Tp,_Tp> {
    _Tp operator() (_Tp __x, _Tp __y) const { return __x & __y; }
};

template<typename _Tp> struct _Bitwise_or : binary_function<_Tp,_Tp,_Tp> {
    _Tp operator() (_Tp __x, _Tp __y) const { return __x | __y; }
};

template<typename _Tp> struct _Bitwise_xor : binary_function<_Tp,_Tp,_Tp> {
    _Tp operator() (_Tp __x, _Tp __y) const { return __x ^ __y; }
};

template<typename _Tp> struct _Bitwise_not : unary_function<_Tp,_Tp> {
    _Tp operator() (_Tp __t) const { return ~__t; }
};

template<typename _Tp> struct _Shift_left : unary_function<_Tp,_Tp> {
    _Tp operator() (_Tp __x, _Tp __y) const { return __x << __y; }
};

template<typename _Tp> struct _Shift_right : unary_function<_Tp,_Tp> {
    _Tp operator() (_Tp __x, _Tp __y) const { return __x >> __y; }
};

  
template<typename _Tp>
inline _Tp
valarray<_Tp>::operator[] (size_t __i) const
{ return _M_data[__i]; }

template<typename _Tp>
inline _Tp&
valarray<_Tp>::operator[] (size_t __i)
{ return _M_data[__i]; }

} // extern "C++"

#include <std/slice.h>
#include <std/slice_array.h>
#include <std/gslice.h>
#include <std/gslice_array.h>
#include <std/mask_array.h>
#include <std/indirect_array.h>

extern "C++" {

template<typename _Tp>
inline valarray<_Tp>::valarray () : _M_size (0), _M_data (0) {}

template<typename _Tp>
inline valarray<_Tp>::valarray (size_t __n) 
        : _M_size (__n), _M_data (new _Tp[__n]) {}

template<typename _Tp>
inline valarray<_Tp>::valarray (const _Tp& __t, size_t __n)
        : _M_size (__n), _M_data (new _Tp[__n])
{ __valarray_fill (_M_data, _M_size, __t); }

template<typename _Tp>
inline valarray<_Tp>::valarray (const _Tp* __restrict__ __pT, size_t __n)
        : _M_size (__n), _M_data (new _Tp[__n])
{ __valarray_copy (__pT, __n, _M_data); }

template<typename _Tp>
inline valarray<_Tp>::valarray (const valarray<_Tp>& __v)
        : _M_size (__v._M_size), _M_data (new _Tp[__v._M_size])
{ __valarray_copy (__v._M_data, _M_size, _M_data); }

template<typename _Tp>
inline valarray<_Tp>::valarray (const slice_array<_Tp>& __sa)
        : _M_size (__sa._M_sz), _M_data (new _Tp[__sa._M_sz])
{ __valarray_copy (__sa._M_array, __sa._M_sz, __sa._M_stride,
                   _Array<_Tp>(_M_data)); }

template<typename _Tp>
inline valarray<_Tp>::valarray (const gslice_array<_Tp>& __ga)
        : _M_size (__ga._M_index.size()), _M_data (new _Tp[_M_size])
{ __valarray_copy (__ga._M_array, _Array<size_t>(__ga._M_index), 
                   _Array<_Tp>(_M_data), _M_size); }

template<typename _Tp>
inline valarray<_Tp>::valarray (const mask_array<_Tp>& __ma)
        : _M_size (__ma._M_sz), _M_data (new _Tp[__ma._M_sz])
{ __valarray_copy (__ma._M_array, __ma._M_mask,
                   _Array<_Tp>(_M_data), _M_size); }

template<typename _Tp>
inline valarray<_Tp>::valarray (const indirect_array<_Tp>& __ia)
        : _M_size (__ia._M_sz), _M_data (new _Tp[__ia._M_sz])
{ __valarray_copy (__ia._M_array, __ia._M_index, 
                   _Array<_Tp>(_M_data), _M_size); }

template<typename _Tp> template<class _Dom>
inline valarray<_Tp>::valarray (const _Expr<_Dom, _Tp>& __e)
        : _M_size (__e.size ()), _M_data (new _Tp[_M_size])
{ __valarray_copy (__e, _M_size, _Array<_Tp>(_M_data)); }

template<typename _Tp>
inline valarray<_Tp>::~valarray () { delete[] _M_data; }

template<typename _Tp>
inline valarray<_Tp>&
valarray<_Tp>::operator= (const valarray<_Tp>& __v)
{
    __valarray_copy(__v._M_data, _M_size, _M_data);
    return *this;
}

template<typename _Tp>
inline valarray<_Tp>&
valarray<_Tp>::operator= (const _Tp& __t)
{
    __valarray_fill (_M_data, _M_size, __t);
    return *this;
}

template<typename _Tp>
inline valarray<_Tp>&
valarray<_Tp>::operator= (const slice_array<_Tp>& __sa)
{
    __valarray_copy (__sa._M_array, __sa._M_sz,
                     __sa._M_stride, _Array<_Tp>(_M_data));
    return *this;
}

template<typename _Tp>
inline valarray<_Tp>&
valarray<_Tp>::operator= (const gslice_array<_Tp>& __ga)
{
    __valarray_copy (__ga._M_array, _Array<size_t>(__ga._M_index),
                     _Array<_Tp>(_M_data), _M_size);
    return *this;
}

template<typename _Tp>
inline valarray<_Tp>&
valarray<_Tp>::operator= (const mask_array<_Tp>& __ma)
{
    __valarray_copy (__ma._M_array, __ma._M_mask,
                     _Array<_Tp>(_M_data), _M_size);
    return *this;
}

template<typename _Tp>
inline valarray<_Tp>&
valarray<_Tp>::operator= (const indirect_array<_Tp>& __ia)
{
    __valarray_copy (__ia._M_array, __ia._M_index,
                     _Array<_Tp>(_M_data), _M_size);
    return *this;
}

template<typename _Tp> template<class _Dom>
inline valarray<_Tp>&
valarray<_Tp>::operator= (const _Expr<_Dom, _Tp>& __e)
{
    __valarray_copy (__e, _M_size, _Array<_Tp>(_M_data));
    return *this;
}

template<typename _Tp>
inline _Expr<_SClos<_ValArray,_Tp>, _Tp>
valarray<_Tp>::operator[] (slice __s) const
{
    typedef _SClos<_ValArray,_Tp> _Closure;
    return _Expr<_Closure, _Tp> (_Closure (_Array<_Tp>(_M_data), __s));
}

template<typename _Tp>
inline slice_array<_Tp>
valarray<_Tp>::operator[] (slice __s)
{
    return slice_array<_Tp> (_Array<_Tp>(_M_data), __s);
}

template<typename _Tp>
inline _Expr<_GClos<_ValArray,_Tp>, _Tp>
valarray<_Tp>::operator[] (const gslice& __gs) const
{
    typedef _GClos<_ValArray,_Tp> _Closure;
    return _Expr<_Closure, _Tp>
        (_Closure (_Array<_Tp>(_M_data), __gs._M_index->_M_index));
}

template<typename _Tp>
inline gslice_array<_Tp>
valarray<_Tp>::operator[] (const gslice& __gs)
{
    return gslice_array<_Tp>
        (_Array<_Tp>(_M_data), __gs._M_index->_M_index);
}

template<typename _Tp>
inline valarray<_Tp>
valarray<_Tp>::operator[] (const valarray<bool>& __m) const
{
    size_t __s (0);
    size_t __e (__m.size ());
    for (size_t __i=0; __i<__e; ++__i)
        if (__m[__i]) ++__s;
    return valarray<_Tp> (mask_array<_Tp> (_Array<_Tp>(_M_data), __s,
                                           _Array<bool> (__m)));
}

template<typename _Tp>
inline mask_array<_Tp>
valarray<_Tp>::operator[] (const valarray<bool>& __m)
{
    size_t __s (0);
    size_t __e (__m.size ());
    for (size_t __i=0; __i<__e; ++__i)
        if (__m[__i]) ++__s;
    return mask_array<_Tp> (_Array<_Tp>(_M_data), __s, _Array<bool> (__m));
}

template<typename _Tp>
inline _Expr<_IClos<_ValArray,_Tp>, _Tp>
valarray<_Tp>::operator[] (const valarray<size_t>& __i) const
{
    typedef _IClos<_ValArray,_Tp> _Closure;
    return _Expr<_Closure, _Tp> (_Closure (*this, __i));
}

template<typename _Tp>
inline indirect_array<_Tp>
valarray<_Tp>::operator[] (const valarray<size_t>& __i)
{
    return indirect_array<_Tp> (_Array<_Tp>(_M_data), __i.size(),
                                _Array<size_t> (__i));
}

template<class _Tp>
inline size_t valarray<_Tp>::size () const { return _M_size; }

template<class _Tp>
inline _Tp
valarray<_Tp>::sum () const
{
    return accumulate (_M_data, _M_data + _M_size, _Tp ());
}

template<typename _Tp>
inline _Tp
valarray<_Tp>::product () const
{
    return accumulate (_M_data, _M_data+_M_size, _Tp(1), multiplies<_Tp> ());
}

template <class _Tp>
inline valarray<_Tp>
valarray<_Tp>::shift (int __n) const
{
    _Tp* const __a = static_cast<_Tp*> (alloca (sizeof(_Tp) * _M_size));
    if (! __n)                          // __n == 0: no shift
        __valarray_copy (_M_data, _M_size, __a);
    else if (__n > 0) {                  // __n > 0: shift left
        if (__n > _M_size)
            __valarray_fill(__a, __n, _Tp());
        else {
            __valarray_copy (_M_data+__n, _M_size-__n, __a);
            __valarray_fill (__a+_M_size-__n, __n, _Tp());
        }
    }
    else {                             // __n < 0: shift right
        __valarray_copy (_M_data, _M_size+__n, __a-__n);
        __valarray_fill(__a, -__n, _Tp());
    }
    return valarray<_Tp> (__a, _M_size);
}

template <class _Tp>
inline valarray<_Tp>
valarray<_Tp>::cshift (int __n) const
{
    _Tp* const __a = static_cast<_Tp*> (alloca (sizeof(_Tp) * _M_size));
    if (! __n)                          // __n == 0: no cshift
        __valarray_copy(_M_data, _M_size, __a);
    else if (__n > 0) {                 // __n > 0: cshift left
        __valarray_copy (_M_data, __n, __a + _M_size-__n);
        __valarray_copy (_M_data + __n, _M_size-__n, __a);
    }
    else {                            // __n < 0: cshift right
        __valarray_copy (_M_data + _M_size + __n, -__n, __a);
        __valarray_copy (_M_data, _M_size + __n, __a - __n);
    }
    return valarray<_Tp> (__a, _M_size);
}

template <class _Tp>
inline void
valarray<_Tp>::resize (size_t __n, _Tp __c)
{
    if (_M_size != __n) {
        delete[] _M_data;
        _M_size = __n;
        _M_data = new _Tp[_M_size];
    }
    __valarray_fill (_M_data, _M_size, __c);
}

template<typename _Tp>
inline _Tp
valarray<_Tp>::min() const
{
    return *min_element (_M_data, _M_data+_M_size);
}

template<typename _Tp>
inline _Tp
valarray<_Tp>::max() const
{
    return *max_element (_M_data, _M_data+_M_size);
}

template<class _Tp>
inline _Expr<_ValFunClos<_ValArray,_Tp>,_Tp>
valarray<_Tp>::apply (_Tp func (_Tp)) const
{
    typedef _ValFunClos<_ValArray,_Tp> _Closure;
    return _Expr<_Closure,_Tp> (_Closure (*this, func));
}

template<class _Tp>
inline _Expr<_RefFunClos<_ValArray,_Tp>,_Tp>
valarray<_Tp>::apply (_Tp func (const _Tp &)) const
{
    typedef _RefFunClos<_ValArray,_Tp> _Closure;
    return _Expr<_Closure,_Tp> (_Closure (*this, func));
}

#define _DEFINE_VALARRAY_UNARY_OPERATOR(_Op, _Name)                     \
  template<typename _Tp>						\
  inline _Expr<_UnClos<_Name,_ValArray,_Tp>, _Tp>               	\
  valarray<_Tp>::operator##_Op() const					\
  {									\
      typedef _UnClos<_Name,_ValArray,_Tp> _Closure;	                \
      return _Expr<_Closure, _Tp> (_Closure (*this));			\
  }

    _DEFINE_VALARRAY_UNARY_OPERATOR(+, _Unary_plus)
    _DEFINE_VALARRAY_UNARY_OPERATOR(-, negate)
    _DEFINE_VALARRAY_UNARY_OPERATOR(~, _Bitwise_not)

#undef _DEFINE_VALARRAY_UNARY_OPERATOR
  
  template<typename _Tp>
  inline _Expr<_UnClos<logical_not,_ValArray,_Tp>, bool>
  valarray<_Tp>::operator!() const
  {
      typedef _UnClos<logical_not,_ValArray,_Tp> _Closure;
      return _Expr<_Closure, bool> (_Closure (*this));
  }

#define _DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT(_Op, _Name)               \
  template<class _Tp>							\
  inline valarray<_Tp> &						\
  valarray<_Tp>::operator##_Op##= (const _Tp &__t)			\
  {									\
      _Array_augmented_##_Name (_Array<_Tp>(_M_data), _M_size, __t);	\
      return *this;							\
  }									\
									\
  template<class _Tp>							\
  inline valarray<_Tp> &						\
  valarray<_Tp>::operator##_Op##= (const valarray<_Tp> &__v)		\
  {									\
      _Array_augmented_##_Name (_Array<_Tp>(_M_data), _M_size, 		\
                               _Array<_Tp>(__v._M_data));		\
      return *this;							\
  }

_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT(+, plus)
_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT(-, minus)
_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT(*, multiplies)
_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT(/, divides)
_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT(%, modulus)
_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT(^, xor)
_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT(&, and)
_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT(|, or)
_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT(<<, shift_left)
_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT(>>, shift_right)

#undef _DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT


#define _DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT(_Op, _Name)          \
  template<class _Tp> template<class _Dom>				\
  inline valarray<_Tp> &						\
  valarray<_Tp>::operator##_Op##= (const _Expr<_Dom,_Tp> &__e)		\
  {									\
      _Array_augmented_##_Name (_Array<_Tp>(_M_data), __e, _M_size);	\
      return *this;							\
  }

_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT(+, plus)
_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT(-, minus)
_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT(*, multiplies)
_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT(/, divides)
_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT(%, modulus)
_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT(^, xor)
_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT(&, and)
_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT(|, or)
_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT(<<, shift_left)
_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT(>>, shift_right)

#undef _DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT
    

#define _DEFINE_BINARY_OPERATOR(_Op, _Name)				\
  template<typename _Tp>						\
  inline _Expr<_BinClos<_Name,_ValArray,_ValArray,_Tp,_Tp>, _Tp>        \
  operator##_Op (const valarray<_Tp> &__v, const valarray<_Tp> &__w)	\
  {									\
      typedef _BinClos<_Name,_ValArray,_ValArray,_Tp,_Tp> _Closure;     \
      return _Expr<_Closure, _Tp> (_Closure (__v, __w));		\
  }									\
									\
  template<typename _Tp>						\
  inline _Expr<_BinClos<_Name,_ValArray,_Constant,_Tp,_Tp>,_Tp>         \
  operator##_Op (const valarray<_Tp> &__v, const _Tp &__t)		\
  {									\
      typedef _BinClos<_Name,_ValArray,_Constant,_Tp,_Tp> _Closure;	\
      return _Expr<_Closure, _Tp> (_Closure (__v, __t));	        \
  }									\
									\
  template<typename _Tp>						\
  inline _Expr<_BinClos<_Name,_Constant,_ValArray,_Tp,_Tp>,_Tp>         \
  operator##_Op (const _Tp &__t, const valarray<_Tp> &__v)		\
  {									\
      typedef _BinClos<_Name,_Constant,_ValArray,_Tp,_Tp> _Closure;     \
      return _Expr<_Closure, _Tp> (_Closure (__t, __v));        	\
  }

_DEFINE_BINARY_OPERATOR(+, plus)
_DEFINE_BINARY_OPERATOR(-, minus)
_DEFINE_BINARY_OPERATOR(*, multiplies)
_DEFINE_BINARY_OPERATOR(/, divides)
_DEFINE_BINARY_OPERATOR(%, modulus)
_DEFINE_BINARY_OPERATOR(^, _Bitwise_xor)
_DEFINE_BINARY_OPERATOR(&, _Bitwise_and)
_DEFINE_BINARY_OPERATOR(|, _Bitwise_or)
_DEFINE_BINARY_OPERATOR(<<, _Shift_left)
_DEFINE_BINARY_OPERATOR(>>, _Shift_right)

#undef _DEFINE_BINARY_OPERATOR

#define _DEFINE_LOGICAL_OPERATOR(_Op, _Name)				\
  template<typename _Tp>						\
  inline _Expr<_BinClos<_Name,_ValArray,_ValArray,_Tp,_Tp>,bool>        \
  operator##_Op (const valarray<_Tp> &__v, const valarray<_Tp> &__w)	\
  {									\
      typedef _BinClos<_Name,_ValArray,_ValArray,_Tp,_Tp> _Closure;     \
      return _Expr<_Closure, bool> (_Closure (__v, __w));               \
  }									\
									\
  template<class _Tp>							\
  inline _Expr<_BinClos<_Name,_ValArray,_Constant,_Tp,_Tp>,bool>        \
  operator##_Op (const valarray<_Tp> &__v, const _Tp &__t)		\
  {									\
      typedef _BinClos<_Name,_ValArray,_Constant,_Tp,_Tp> _Closure;     \
      return _Expr<_Closure, bool> (_Closure (__v, __t));       	\
  }									\
									\
  template<class _Tp>							\
  inline _Expr<_BinClos<_Name,_Constant,_ValArray,_Tp,_Tp>,bool>        \
  operator##_Op (const _Tp &__t, const valarray<_Tp> &__v)		\
  {									\
      typedef _BinClos<_Name,_Constant,_ValArray,_Tp,_Tp> _Closure;     \
      return _Expr<_Closure, bool> (_Closure (__t, __v));	        \
  }

_DEFINE_LOGICAL_OPERATOR(&&, logical_and)
_DEFINE_LOGICAL_OPERATOR(||, logical_or)
_DEFINE_LOGICAL_OPERATOR(==, equal_to)
_DEFINE_LOGICAL_OPERATOR(!=, not_equal_to)
_DEFINE_LOGICAL_OPERATOR(<, less)
_DEFINE_LOGICAL_OPERATOR(>, greater)
_DEFINE_LOGICAL_OPERATOR(<=, less_equal)
_DEFINE_LOGICAL_OPERATOR(>=, greater_equal)

#undef _DEFINE_VALARRAY_OPERATOR

#undef _G_NO_VALARRAY_TEMPLATE_EXPORT

} // extern "C++"

#endif // __STD_VALARRAY__

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// mode:c++
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