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gcc/libstdc++-v3/bits/valarray_meta.h

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libstdc++-v3: New directory. 2000-04-21 Benjamin Kosnik <bkoz@redhat.com> * libstdc++-v3: New directory. From-SVN: r33317
2000-04-22 04:33:34 +08:00
// The template and inlines for the -*- C++ -*- internal _Meta class.
// Copyright (C) 1997-1999 Free Software Foundation, Inc.
//
// 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@cmla.ens-cachan.fr>
#ifndef _CPP_VALARRAY_META_H
#define _CPP_VALARRAY_META_H 1
namespace std {
//
// Implementing a loosened valarray return value is tricky.
// First we need to meet 26.3.1/3: we should not add more than
// two levels of template nesting. Therefore we resort to template
// template to "flatten" loosened return value types.
// At some point we use partial specialization to remove one level
// template nesting due to _Expr<>
//
// This class is NOT defined. It doesn't need to.
template<typename _Tp1, typename _Tp2> class _Constant;
//
// Unary function application closure.
//
template<class _Dom> class _UnFunBase {
public:
typedef typename _Dom::value_type value_type;
typedef value_type _Vt;
_UnFunBase (const _Dom& __e, _Vt __f(_Vt))
: _M_expr(__e), _M_func(__f) {}
_Vt operator[] (size_t __i) const { return _M_func(_M_expr[__i]); }
size_t size () const { return _M_expr.size(); }
private:
const _Dom& _M_expr;
_Vt (*_M_func)(_Vt);
};
template<template<class, class> class _Meta, class _Dom>
class _UnFunClos;
template<class _Dom>
struct _UnFunClos<_Expr,_Dom> : _UnFunBase<_Dom> {
typedef _UnFunBase<_Dom> _Base;
typedef typename _Base::value_type value_type;
_UnFunClos (const _Dom& __e, value_type __f(value_type))
: _Base (__e, __f) {}
};
template<typename _Tp>
struct _UnFunClos<_ValArray,_Tp> : _UnFunBase<valarray<_Tp> > {
typedef _UnFunBase<valarray<_Tp> > _Base;
typedef typename _Base::value_type value_type;
_UnFunClos (const valarray<_Tp>& __v, _Tp __f(_Tp))
: _Base (__v, __f) {}
};
//
// Binary function application closure.
//
template<template<class, class> class _Meta1,
template<class, class> class Meta2,
class _Dom1, class _Dom2> class _BinFunClos;
template<class _Dom1, class _Dom2> class _BinFunBase {
public:
typedef typename _Dom1::value_type value_type;
typedef value_type _Vt;
_BinFunBase (const _Dom1& __e1, const _Dom2& __e2,
_Vt __f (_Vt, _Vt))
: _M_expr1 (__e1), _M_expr2 (__e2), _M_func (__f) {}
value_type operator[] (size_t __i) const
{ return _M_func (_M_expr1[__i], _M_expr2[__i]); }
size_t size () const { return _M_expr1.size (); }
private:
const _Dom1& _M_expr1;
const _Dom2& _M_expr2;
_Vt (*_M_func)(_Vt, _Vt);
};
template<class _Dom> class _BinFunBase1 {
public:
typedef typename _Dom::value_type value_type ;
typedef value_type _Vt;
_BinFunBase1 (const _Vt& __c, const _Dom& __e, _Vt __f(_Vt, _Vt))
: _M_expr1 (__c), _M_expr2 (__e), _M_func (__f) {}
value_type operator[] (size_t __i) const
{ return _M_func (_M_expr1, _M_expr2[__i]); }
size_t size () const { return _M_expr2.size (); }
private:
const _Vt& _M_expr1;
const _Dom& _M_expr2;
_Vt (*_M_func)(_Vt, _Vt);
};
template<class _Dom> class _BinFunBase2 {
public:
typedef typename _Dom::value_type value_type;
typedef value_type _Vt;
_BinFunBase2 (const _Dom& __e, const _Vt& __c, _Vt __f(_Vt, _Vt))
: _M_expr1 (__e), _M_expr2 (__c), _M_func (__f) {}
value_type operator[] (size_t __i) const
{ return _M_func (_M_expr1[__i], _M_expr2); }
size_t size () const { return _M_expr1.size (); }
private:
const _Dom& _M_expr1;
const _Vt& _M_expr2;
_Vt (*_M_func)(_Vt, _Vt);
};
template<class _Dom1, class _Dom2>
struct _BinFunClos<_Expr,_Expr,_Dom1,_Dom2> : _BinFunBase<_Dom1,_Dom2> {
typedef _BinFunBase<_Dom1,_Dom2> _Base;
typedef typename _Base::value_type value_type;
typedef value_type _Tp;
_BinFunClos (const _Dom1& __e1, const _Dom2& __e2,
_Tp __f(_Tp, _Tp))
: _Base (__e1, __e2, __f) {}
};
template<typename _Tp>
struct _BinFunClos<_ValArray,_ValArray,_Tp,_Tp>
: _BinFunBase<valarray<_Tp>, valarray<_Tp> > {
typedef _BinFunBase<valarray<_Tp>, valarray<_Tp> > _Base;
typedef _Tp value_type;
_BinFunClos (const valarray<_Tp>& __v, const valarray<_Tp>& __w,
_Tp __f(_Tp, _Tp))
: _Base (__v, __w, __f) {}
};
template<class _Dom>
struct _BinFunClos<_Expr,_ValArray,_Dom,typename _Dom::value_type>
: _BinFunBase<_Dom,valarray<typename _Dom::value_type> > {
typedef typename _Dom::value_type _Tp;
typedef _BinFunBase<_Dom,valarray<_Tp> > _Base;
typedef _Tp value_type;
_BinFunClos (const _Dom& __e, const valarray<_Tp>& __v,
_Tp __f(_Tp, _Tp))
: _Base (__e, __v, __f) {}
};
template<class _Dom>
struct _BinFunClos<_ValArray,_Expr,typename _Dom::value_type,_Dom>
: _BinFunBase<valarray<typename _Dom::value_type>,_Dom> {
typedef typename _Dom::value_type _Tp;
typedef _BinFunBase<_Dom,valarray<_Tp> > _Base;
typedef _Tp value_type;
_BinFunClos (const valarray<_Tp>& __v, const _Dom& __e,
_Tp __f(_Tp, _Tp))
: _Base (__v, __e, __f) {}
};
template<class _Dom>
struct _BinFunClos<_Expr,_Constant,_Dom,typename _Dom::value_type>
: _BinFunBase2<_Dom> {
typedef typename _Dom::value_type _Tp;
typedef _Tp value_type;
typedef _BinFunBase2<_Dom> _Base;
_BinFunClos (const _Dom& __e, const _Tp& __t, _Tp __f (_Tp, _Tp))
: _Base (__e, __t, __f) {}
};
template<class _Dom>
struct _BinFunClos<_Constant,_Expr,_Dom,typename _Dom::value_type>
: _BinFunBase1<_Dom> {
typedef typename _Dom::value_type _Tp;
typedef _Tp value_type;
typedef _BinFunBase1<_Dom> _Base;
_BinFunClos (const _Tp& __t, const _Dom& __e, _Tp __f (_Tp, _Tp))
: _Base (__t, __e, __f) {}
};
template<typename _Tp>
struct _BinFunClos<_ValArray,_Constant,_Tp,_Tp>
: _BinFunBase2<valarray<_Tp> > {
typedef _BinFunBase2<valarray<_Tp> > _Base;
typedef _Tp value_type;
_BinFunClos (const valarray<_Tp>& __v, const _Tp& __t,
_Tp __f(_Tp, _Tp))
: _Base (__v, __t, __f) {}
};
template<typename _Tp>
struct _BinFunClos<_Constant,_ValArray,_Tp,_Tp>
: _BinFunBase1<valarray<_Tp> > {
typedef _BinFunBase1<valarray<_Tp> > _Base;
typedef _Tp value_type;
_BinFunClos (const _Tp& __t, const valarray<_Tp>& __v,
_Tp __f (_Tp, _Tp))
: _Base (__t, __v, __f) {}
};
//
// Apply function taking a value/const reference closure
//
template<typename _Dom, typename _Arg> class _FunBase {
public:
typedef typename _Dom::value_type value_type;
_FunBase (const _Dom& __e, value_type __f(_Arg))
: _M_expr (__e), _M_func (__f) {}
value_type operator[] (size_t __i) const
{ return _M_func (_M_expr[__i]); }
size_t size() const { return _M_expr.size ();}
private:
const _Dom& _M_expr;
value_type (*_M_func)(_Arg);
};
template<class _Dom>
struct _ValFunClos<_Expr,_Dom>
: _FunBase<_Dom, typename _Dom::value_type> {
typedef _FunBase<_Dom, typename _Dom::value_type> _Base;
typedef typename _Base::value_type value_type;
typedef value_type _Tp;
_ValFunClos (const _Dom& __e, _Tp __f (_Tp)) : _Base (__e, __f) {}
};
template<typename _Tp>
struct _ValFunClos<_ValArray,_Tp>
: _FunBase<valarray<_Tp>, _Tp> {
typedef _FunBase<valarray<_Tp>, _Tp> _Base;
typedef _Tp value_type;
_ValFunClos (const valarray<_Tp>& __v, _Tp __f(_Tp))
: _Base (__v, __f) {}
};
template<class _Dom>
struct _RefFunClos<_Expr,_Dom> :
_FunBase<_Dom, const typename _Dom::value_type&> {
typedef _FunBase<_Dom, const typename _Dom::value_type&> _Base;
typedef typename _Base::value_type value_type;
typedef value_type _Tp;
_RefFunClos (const _Dom& __e, _Tp __f (const _Tp&))
: _Base (__e, __f) {}
};
template<typename _Tp>
struct _RefFunClos<_ValArray,_Tp>
: _FunBase<valarray<_Tp>, const _Tp&> {
typedef _FunBase<valarray<_Tp>, const _Tp&> _Base;
typedef _Tp value_type;
_RefFunClos (const valarray<_Tp>& __v, _Tp __f(const _Tp&))
: _Base (__e, __f) {}
};
//
// Unary expression closure.
//
template<template<class> class _Oper, typename _Arg>
class _UnBase {
public:
typedef _Oper<typename _Arg::value_type> _Op;
typedef typename _Op::result_type value_type;
_UnBase (const _Arg& __e) : _M_expr(__e) {}
value_type operator[] (size_t) const;
size_t size () const { return _M_expr.size (); }
private:
const _Arg& _M_expr;
};
template<template<class> class _Oper, typename _Arg>
inline typename _UnBase<_Oper, _Arg>::value_type
_UnBase<_Oper, _Arg>::operator[] (size_t __i) const
{ return _Op() (_M_expr[__i]); }
template<template<class> class _Oper, class _Dom>
struct _UnClos<_Oper, _Expr, _Dom> : _UnBase<_Oper, _Dom> {
typedef _Dom _Arg;
typedef _UnBase<_Oper, _Dom> _Base;
typedef typename _Base::value_type value_type;
_UnClos (const _Arg& __e) : _Base(__e) {}
};
template<template<class> class _Oper, typename _Tp>
struct _UnClos<_Oper, _ValArray, _Tp> : _UnBase<_Oper, valarray<_Tp> > {
typedef valarray<_Tp> _Arg;
typedef _UnBase<_Oper, valarray<_Tp> > _Base;
typedef typename _Base::value_type value_type;
_UnClos (const _Arg& __e) : _Base(__e) {}
};
//
// Binary expression closure.
//
template<template<class> class _Oper,
typename _FirstArg, typename _SecondArg>
class _BinBase {
public:
typedef _Oper<typename _FirstArg::value_type> _Op;
typedef typename _Op::result_type value_type;
_BinBase (const _FirstArg& __e1, const _SecondArg& __e2)
: _M_expr1 (__e1), _M_expr2 (__e2) {}
value_type operator[] (size_t) const;
size_t size () const { return _M_expr1.size (); }
private:
const _FirstArg& _M_expr1;
const _SecondArg& _M_expr2;
};
template<template<class> class _Oper,
typename _FirstArg, typename _SecondArg>
inline typename _BinBase<_Oper,_FirstArg,_SecondArg>::value_type
_BinBase<_Oper,_FirstArg,_SecondArg>::operator[] (size_t __i) const
{ return _Op() (_M_expr1[__i], _M_expr2[__i]); }
template<template<class> class _Oper, class _Clos>
class _BinBase2 {
public:
typedef typename _Clos::value_type _Vt;
typedef _Oper<_Vt> _Op;
typedef typename _Op::result_type value_type;
_BinBase2 (const _Clos& __e, const _Vt& __t)
: _M_expr1 (__e), _M_expr2 (__t) {}
value_type operator[] (size_t) const;
size_t size () const { return _M_expr1.size (); }
private:
const _Clos& _M_expr1;
const _Vt& _M_expr2;
};
template<template<class> class _Oper, class _Clos>
inline typename _BinBase2<_Oper,_Clos>::value_type
_BinBase2<_Oper,_Clos>::operator[] (size_t __i) const
{ return _Op() (_M_expr1[__i], _M_expr2); }
template<template<class> class _Oper, class _Clos>
class _BinBase1 {
public:
typedef typename _Clos::value_type _Vt;
typedef _Oper<_Vt> _Op;
typedef typename _Op::result_type value_type;
_BinBase1 (const _Vt& __t, const _Clos& __e)
: _M_expr1 (__t), _M_expr2 (__e) {}
value_type operator[] (size_t) const;
size_t size () const { return _M_expr2.size (); }
private:
const _Vt& _M_expr1;
const _Clos& _M_expr2;
};
template<template<class> class _Oper, class _Clos>
inline typename
_BinBase1<_Oper,_Clos>::value_type
_BinBase1<_Oper,_Clos>:: operator[] (size_t __i) const
{ return _Op() (_M_expr1, _M_expr2[__i]); }
template<template<class> class _Oper, class _Dom1, class _Dom2>
struct _BinClos<_Oper, _Expr, _Expr, _Dom1, _Dom2>
: _BinBase<_Oper,_Dom1,_Dom2> {
typedef _BinBase<_Oper,_Dom1,_Dom2> _Base;
typedef typename _Base::value_type value_type;
_BinClos(const _Dom1& __e1, const _Dom2& __e2) : _Base(__e1, __e2) {}
};
template<template<class> class _Oper, typename _Tp>
struct _BinClos<_Oper,_ValArray,_ValArray,_Tp,_Tp>
: _BinBase<_Oper,valarray<_Tp>,valarray<_Tp> > {
typedef _BinBase<_Oper,valarray<_Tp>,valarray<_Tp> > _Base;
typedef _Tp value_type;
_BinClos (const valarray<_Tp>& __v, const valarray<_Tp>& __w)
: _Base (__v, __w) {}
};
template<template<class> class _Oper, class _Dom>
struct _BinClos<_Oper,_Expr,_ValArray,_Dom,typename _Dom::value_type>
: _BinBase<_Oper,_Dom,valarray<typename _Dom::value_type> > {
typedef typename _Dom::value_type _Tp;
typedef _BinBase<_Oper,_Dom,valarray<_Tp> > _Base;
typedef typename _Base::value_type value_type;
_BinClos(const _Dom& __e1, const valarray<_Tp>& __e2)
: _Base (__e1, __e2) {}
};
template<template<class> class _Oper, class _Dom>
struct _BinClos<_Oper,_ValArray,_Expr,typename _Dom::value_type,_Dom>
: _BinBase<_Oper,valarray<typename _Dom::value_type>,_Dom> {
typedef typename _Dom::value_type _Tp;
typedef _BinBase<_Oper,valarray<_Tp>,_Dom> _Base;
typedef typename _Base::value_type value_type;
_BinClos (const valarray<_Tp>& __e1, const _Dom& __e2)
: _Base (__e1, __e2) {}
};
template<template<class> class _Oper, class _Dom>
struct _BinClos<_Oper,_Expr,_Constant,_Dom,typename _Dom::value_type>
: _BinBase2<_Oper,_Dom> {
typedef typename _Dom::value_type _Tp;
typedef _BinBase2<_Oper,_Dom> _Base;
typedef typename _Base::value_type value_type;
_BinClos (const _Dom& __e1, const _Tp& __e2) : _Base (__e1, __e2) {}
};
template<template<class> class _Oper, class _Dom>
struct _BinClos<_Oper,_Constant,_Expr,typename _Dom::value_type,_Dom>
: _BinBase1<_Oper,_Dom> {
typedef typename _Dom::value_type _Tp;
typedef _BinBase1<_Oper,_Dom> _Base;
typedef typename _Base::value_type value_type;
_BinClos (const _Tp& __e1, const _Dom& __e2) : _Base (__e1, __e2) {}
};
template<template<class> class _Oper, typename _Tp>
struct _BinClos<_Oper,_ValArray,_Constant,_Tp,_Tp>
: _BinBase2<_Oper,valarray<_Tp> > {
typedef _BinBase2<_Oper,valarray<_Tp> > _Base;
typedef typename _Base::value_type value_type;
_BinClos (const valarray<_Tp>& __v, const _Tp& __t)
: _Base (__v, __t) {}
};
template<template<class> class _Oper, typename _Tp>
struct _BinClos<_Oper,_Constant,_ValArray,_Tp,_Tp>
: _BinBase1<_Oper,valarray<_Tp> > {
typedef _BinBase1<_Oper,valarray<_Tp> > _Base;
typedef typename _Base::value_type value_type;
_BinClos (const _Tp& __t, const valarray<_Tp>& __v)
: _Base (__t, __v) {}
};
//
// slice_array closure.
//
template<typename _Dom> class _SBase {
public:
typedef typename _Dom::value_type value_type;
_SBase (const _Dom& __e, const slice& __s)
: _M_expr (__e), _M_slice (__s) {}
value_type operator[] (size_t __i) const
{ return _M_expr[_M_slice.start () + __i * _M_slice.stride ()]; }
size_t size() const { return _M_slice.size (); }
private:
const _Dom& _M_expr;
const slice& _M_slice;
};
template<typename _Tp> class _SBase<_Array<_Tp> > {
public:
typedef _Tp value_type;
_SBase (_Array<_Tp> __a, const slice& __s)
: _M_array (__a._M_data+__s.start()), _M_size (__s.size()),
_M_stride (__s.stride()) {}
value_type operator[] (size_t __i) const
{ return _M_array._M_data[__i * _M_stride]; }
size_t size() const { return _M_size; }
private:
const _Array<_Tp> _M_array;
const size_t _M_size;
const size_t _M_stride;
};
template<class _Dom> struct _SClos<_Expr,_Dom> : _SBase<_Dom> {
typedef _SBase<_Dom> _Base;
typedef typename _Base::value_type value_type;
_SClos (const _Dom& __e, const slice& __s) : _Base (__e, __s) {}
};
template<typename _Tp>
struct _SClos<_ValArray,_Tp> : _SBase<_Array<_Tp> > {
typedef _SBase<_Array<_Tp> > _Base;
typedef _Tp value_type;
_SClos (_Array<_Tp> __a, const slice& __s) : _Base (__a, __s) {}
};
//
// gslice_array closure.
//
template<class _Dom> class _GBase {
public:
typedef typename _Dom::value_type value_type;
_GBase (const _Dom& __e, const valarray<size_t>& __i)
: _M_expr (__e), _M_index(__i) {}
value_type operator[] (size_t __i) const
{ return _M_expr[_M_index[__i]]; }
size_t size () const { return _M_index.size(); }
private:
const _Dom& _M_expr;
const valarray<size_t>& _M_index;
};
template<typename _Tp> class _GBase<_Array<_Tp> > {
public:
typedef _Tp value_type;
_GBase (_Array<_Tp> __a, const valarray<size_t>& __i)
: _M_array (__a), _M_index(__i) {}
value_type operator[] (size_t __i) const
{ return _M_array._M_data[_M_index[__i]]; }
size_t size () const { return _M_index.size(); }
private:
const _Array<_Tp> _M_array;
const valarray<size_t>& _M_index;
};
template<class _Dom> struct _GClos<_Expr,_Dom> : _GBase<_Dom> {
typedef _GBase<_Dom> _Base;
typedef typename _Base::value_type value_type;
_GClos (const _Dom& __e, const valarray<size_t>& __i)
: _Base (__e, __i) {}
};
template<typename _Tp>
struct _GClos<_ValArray,_Tp> : _GBase<_Array<_Tp> > {
typedef _GBase<_Array<_Tp> > _Base;
typedef typename _Base::value_type value_type;
_GClos (_Array<_Tp> __a, const valarray<size_t>& __i)
: _Base (__a, __i) {}
};
//
// indirect_array closure
//
template<class _Dom> class _IBase {
public:
typedef typename _Dom::value_type value_type;
_IBase (const _Dom& __e, const valarray<size_t>& __i)
: _M_expr (__e), _M_index (__i) {}
value_type operator[] (size_t __i) const
{ return _M_expr[_M_index[__i]]; }
size_t size() const { return _M_index.size(); }
private:
const _Dom& _M_expr;
const valarray<size_t>& _M_index;
};
template<class _Dom> struct _IClos<_Expr,_Dom> : _IBase<_Dom> {
typedef _IBase<_Dom> _Base;
typedef typename _Base::value_type value_type;
_IClos (const _Dom& __e, const valarray<size_t>& __i)
: _Base (__e, __i) {}
};
template<typename _Tp>
struct _IClos<_ValArray,_Tp> : _IBase<valarray<_Tp> > {
typedef _IBase<valarray<_Tp> > _Base;
typedef _Tp value_type;
_IClos (const valarray<_Tp>& __a, const valarray<size_t>& __i)
: _Base (__a, __i) {}
};
//
// class _Expr
//
template<class _Clos, typename _Tp> class _Expr {
public:
typedef _Tp value_type;
_Expr (const _Clos&);
const _Clos& operator() () const;
value_type operator[] (size_t) const;
valarray<value_type> operator[] (slice) const;
valarray<value_type> operator[] (const gslice&) const;
valarray<value_type> operator[] (const valarray<bool>&) const;
valarray<value_type> operator[] (const valarray<size_t>&) const;
_Expr<_UnClos<_Unary_plus,_Expr,_Clos>, value_type>
operator+ () const;
_Expr<_UnClos<negate,_Expr,_Clos>, value_type>
operator- () const;
_Expr<_UnClos<_Bitwise_not,_Expr,_Clos>, value_type>
operator~ () const;
_Expr<_UnClos<logical_not,_Expr,_Clos>, bool>
operator! () const;
size_t size () const;
value_type sum () const;
valarray<value_type> shift (int) const;
valarray<value_type> cshift (int) const;
// _Meta<_ApplyFunctionWithValue<_Expr>, value_type>
// apply (value_type _M_func (value_type)) const;
// _Meta<_ApplyFunctionWithConstRef<_Expr>, value_type>
// apply (value_type _M_func (const value_type&)) const;
private:
const _Clos _M_closure;
};
template<class _Clos, typename _Tp>
inline
_Expr<_Clos,_Tp>::_Expr (const _Clos& __c) : _M_closure(__c) {}
template<class _Clos, typename _Tp>
inline const _Clos&
_Expr<_Clos,_Tp>::operator() () const
{ return _M_closure; }
template<class _Clos, typename _Tp>
inline _Tp
_Expr<_Clos,_Tp>::operator[] (size_t __i) const
{ return _M_closure[__i]; }
template<class _Clos, typename _Tp>
inline valarray<_Tp>
_Expr<_Clos,_Tp>::operator[] (slice __s) const
{ return _M_closure[__s]; }
template<class _Clos, typename _Tp>
inline valarray<_Tp>
_Expr<_Clos,_Tp>::operator[] (const gslice& __gs) const
{ return _M_closure[__gs]; }
template<class _Clos, typename _Tp>
inline valarray<_Tp>
_Expr<_Clos,_Tp>::operator[] (const valarray<bool>& __m) const
{ return _M_closure[__m]; }
template<class _Clos, typename _Tp>
inline valarray<_Tp>
_Expr<_Clos,_Tp>::operator[] (const valarray<size_t>& __i) const
{ return _M_closure[__i]; }
template<class _Clos, typename _Tp>
inline size_t
_Expr<_Clos,_Tp>::size () const { return _M_closure.size (); }
// XXX: replace this with a more robust summation algorithm.
template<class _Clos, typename _Tp>
inline _Tp
_Expr<_Clos,_Tp>::sum () const
{
size_t __n = _M_closure.size();
if (__n == 0) return _Tp();
else {
_Tp __s = _M_closure[--__n];
while (__n != 0) __s += _M_closure[--__n];
return __s;
}
}
template<class _Dom, typename _Tp>
inline _Tp
min (const _Expr<_Dom,_Tp>& __e)
{
size_t __s = __e.size ();
_Tp __m = __e[0];
for (size_t __i=1; __i<__s; ++__i)
if (__m > __e[__i]) __m = __e[__i];
return __m;
}
template<class _Dom, typename _Tp>
inline _Tp
max (const _Expr<_Dom,_Tp>& __e)
{
size_t __s = __e.size();
_Tp __m = __e[0];
for (size_t __i=1; __i<__s; ++__i)
if (__m < __e[__i]) __m = __e[__i];
return __m;
}
template<class _Dom, typename _Tp>
inline _Expr<_UnClos<logical_not,_Expr,_Dom>, bool>
_Expr<_Dom,_Tp>::operator! () const
{
typedef _UnClos<logical_not,_Expr,_Dom> _Closure;
return _Expr<_Closure,_Tp> (_Closure(this->_M_closure));
}
#define _DEFINE_EXPR_UNARY_OPERATOR(_Op, _Name) \
template<class _Dom, typename _Tp> \
inline _Expr<_UnClos<_Name,_Expr,_Dom>,_Tp> \
_Expr<_Dom,_Tp>::operator##_Op () const \
{ \
typedef _UnClos<_Name,_Expr,_Dom> _Closure; \
return _Expr<_Closure,_Tp> (_Closure (this->_M_closure)); \
}
_DEFINE_EXPR_UNARY_OPERATOR(+, _Unary_plus)
_DEFINE_EXPR_UNARY_OPERATOR(-, negate)
_DEFINE_EXPR_UNARY_OPERATOR(~, _Bitwise_not)
#undef _DEFINE_EXPR_UNARY_OPERATOR
#define _DEFINE_EXPR_BINARY_OPERATOR(_Op, _Name) \
template<class _Dom1, class _Dom2> \
inline _Expr<_BinClos<_Name,_Expr,_Expr,_Dom1,_Dom2>, \
typename _Name<typename _Dom1::value_type>::result_type> \
operator##_Op (const _Expr<_Dom1,typename _Dom1::value_type>& __v, \
const _Expr<_Dom2,typename _Dom2::value_type>& __w) \
{ \
typedef typename _Dom1::value_type _Arg; \
typedef typename _Name<_Arg>::result_type _Value; \
typedef _BinClos<_Name,_Expr,_Expr,_Dom1,_Dom2> _Closure; \
return _Expr<_Closure,_Value> (_Closure (__v (), __w ())); \
} \
\
template<class _Dom> \
inline _Expr<_BinClos<_Name,_Expr,_Constant,_Dom,typename _Dom::value_type>, \
typename _Name<typename _Dom::value_type>::result_type> \
operator##_Op (const _Expr<_Dom,typename _Dom::value_type>& __v, \
const typename _Dom::value_type& __t) \
{ \
typedef typename _Dom::value_type _Arg; \
typedef typename _Name<_Arg>::result_type _Value; \
typedef _BinClos<_Name,_Expr,_Constant,_Dom,_Arg> _Closure; \
return _Expr<_Closure,_Value> (_Closure (__v (), __t)); \
} \
\
template<class _Dom> \
inline _Expr<_BinClos<_Name,_Constant,_Expr,typename _Dom::value_type,_Dom>, \
typename _Name<typename _Dom::value_type>::result_type> \
operator##_Op (const typename _Dom::value_type& __t, \
const _Expr<_Dom,typename _Dom::value_type>& __v) \
{ \
typedef typename _Dom::value_type _Arg; \
typedef typename _Name<_Arg>::result_type _Value; \
typedef _BinClos<_Name,_Constant,_Expr,_Arg,_Dom> _Closure; \
return _Expr<_Closure,_Value> (_Closure (__t, __v ())); \
} \
\
template<class _Dom> \
inline _Expr<_BinClos<_Name,_Expr,_ValArray,_Dom,typename _Dom::value_type>, \
typename _Name<typename _Dom::value_type>::result_type> \
operator##_Op (const _Expr<_Dom,typename _Dom::value_type>& __e, \
const valarray<typename _Dom::value_type>& __v) \
{ \
typedef typename _Dom::value_type _Arg; \
typedef typename _Name<_Arg>::result_type _Value; \
typedef _BinClos<_Name,_Expr,_ValArray,_Dom,_Arg> _Closure; \
return _Expr<_Closure,_Value> (_Closure (__e (), __v)); \
} \
\
template<class _Dom> \
inline _Expr<_BinClos<_Name,_ValArray,_Expr,typename _Dom::value_type,_Dom>, \
typename _Name<typename _Dom::value_type>::result_type> \
operator##_Op (const valarray<typename _Dom::value_type>& __v, \
const _Expr<_Dom,typename _Dom::value_type>& __e) \
{ \
typedef typename _Dom::value_type _Tp; \
typedef typename _Name<_Tp>::result_type _Value; \
typedef _BinClos<_Name,_ValArray,_Expr,_Tp,_Dom> _Closure; \
return _Expr<_Closure,_Value> (_Closure (__v, __e ())); \
}
_DEFINE_EXPR_BINARY_OPERATOR(+, plus)
_DEFINE_EXPR_BINARY_OPERATOR(-, minus)
_DEFINE_EXPR_BINARY_OPERATOR(*, multiplies)
_DEFINE_EXPR_BINARY_OPERATOR(/, divides)
_DEFINE_EXPR_BINARY_OPERATOR(%, modulus)
_DEFINE_EXPR_BINARY_OPERATOR(^, _Bitwise_xor)
_DEFINE_EXPR_BINARY_OPERATOR(&, _Bitwise_and)
_DEFINE_EXPR_BINARY_OPERATOR(|, _Bitwise_or)
_DEFINE_EXPR_BINARY_OPERATOR(<<, _Shift_left)
_DEFINE_EXPR_BINARY_OPERATOR(>>, _Shift_right)
#undef _DEFINE_EXPR_BINARY_OPERATOR
#define _DEFINE_EXPR_RELATIONAL_OPERATOR(_Op, _Name) \
template<class _Dom1, class _Dom2> \
inline _Expr<_BinClos<_Name,_Expr,_Expr,_Dom1,_Dom2>, bool> \
operator##_Op (const _Expr<_Dom1,typename _Dom1::value_type>& __v, \
const _Expr<_Dom2,typename _Dom2::value_type>& __w) \
{ \
typedef typename _Dom1::value_type _Arg; \
typedef _BinClos<_Name,_Expr,_Expr,_Dom1,_Dom2> _Closure; \
return _Expr<_Closure,bool> (_Closure (__v (), __w ())); \
} \
\
template<class _Dom> \
inline _Expr<_BinClos<_Name,_Expr,_Constant,_Dom,typename _Dom::value_type>, \
bool> \
operator##_Op (const _Expr<_Dom,typename _Dom::value_type>& __v, \
const typename _Dom::value_type& __t) \
{ \
typedef typename _Dom::value_type _Arg; \
typedef _BinClos<_Name,_Expr,_Constant,_Dom,_Arg> _Closure; \
return _Expr<_Closure,bool> (_Closure (__v (), __t)); \
} \
\
template<class _Dom> \
inline _Expr<_BinClos<_Name,_Constant,_Expr,typename _Dom::value_type,_Dom>, \
bool> \
operator##_Op (const typename _Dom::value_type& __t, \
const _Expr<_Dom,typename _Dom::value_type>& __v) \
{ \
typedef typename _Dom::value_type _Arg; \
typedef _BinClos<_Name,_Constant,_Expr,_Arg,_Dom> _Closure; \
return _Expr<_Closure,bool> (_Closure (__t, __v ())); \
} \
\
template<class _Dom> \
inline _Expr<_BinClos<_Name,_Expr,_ValArray,_Dom,typename _Dom::value_type>, \
bool> \
operator##_Op (const _Expr<_Dom,typename _Dom::value_type>& __e, \
const valarray<typename _Dom::value_type>& __v) \
{ \
typedef typename _Dom::value_type _Tp; \
typedef _BinClos<_Name,_Expr,_ValArray,_Dom,_Tp> _Closure; \
return _Expr<_Closure,bool> (_Closure (__e (), __v)); \
} \
\
template<class _Dom> \
inline _Expr<_BinClos<_Name,_ValArray,_Expr,typename _Dom::value_type,_Dom>, \
bool> \
operator##_Op (const valarray<typename _Dom::value_type>& __v, \
const _Expr<_Dom,typename _Dom::value_type>& __e) \
{ \
typedef typename _Dom::value_type _Tp; \
typedef _BinClos<_Name,_ValArray,_Expr,_Tp,_Dom> _Closure; \
return _Expr<_Closure,bool> (_Closure (__v, __e ())); \
}
_DEFINE_EXPR_RELATIONAL_OPERATOR(&&, logical_and)
_DEFINE_EXPR_RELATIONAL_OPERATOR(||, logical_or)
_DEFINE_EXPR_RELATIONAL_OPERATOR(==, equal_to)
_DEFINE_EXPR_RELATIONAL_OPERATOR(!=, not_equal_to)
_DEFINE_EXPR_RELATIONAL_OPERATOR(<, less)
_DEFINE_EXPR_RELATIONAL_OPERATOR(>, greater)
_DEFINE_EXPR_RELATIONAL_OPERATOR(<=, less_equal)
_DEFINE_EXPR_RELATIONAL_OPERATOR(>=, greater_equal)
#undef _DEFINE_EXPR_RELATIONAL_OPERATOR
#define _DEFINE_EXPR_UNARY_FUNCTION(_Name) \
template<class _Dom> \
inline _Expr<_UnFunClos<_Expr,_Dom>,typename _Dom::value_type> \
_Name(const _Expr<_Dom,typename _Dom::value_type>& __e) \
{ \
typedef typename _Dom::value_type _Tp; \
typedef _UnFunClos<_Expr,_Dom> _Closure; \
return _Expr<_Closure,_Tp>(_Closure(__e(), (_Tp(*)(_Tp))(&_Name))); \
} \
\
template<typename _Tp> \
inline _Expr<_UnFunClos<_ValArray,_Tp>,_Tp> \
_Name(const valarray<_Tp>& __v) \
{ \
typedef _UnFunClos<_ValArray,_Tp> _Closure; \
return _Expr<_Closure,_Tp> (_Closure (__v, (_Tp(*)(_Tp))(&_Name))); \
}
_DEFINE_EXPR_UNARY_FUNCTION(abs)
_DEFINE_EXPR_UNARY_FUNCTION(cos)
_DEFINE_EXPR_UNARY_FUNCTION(acos)
_DEFINE_EXPR_UNARY_FUNCTION(cosh)
_DEFINE_EXPR_UNARY_FUNCTION(sin)
_DEFINE_EXPR_UNARY_FUNCTION(asin)
_DEFINE_EXPR_UNARY_FUNCTION(sinh)
_DEFINE_EXPR_UNARY_FUNCTION(tan)
_DEFINE_EXPR_UNARY_FUNCTION(tanh)
_DEFINE_EXPR_UNARY_FUNCTION(atan)
_DEFINE_EXPR_UNARY_FUNCTION(exp)
_DEFINE_EXPR_UNARY_FUNCTION(log)
_DEFINE_EXPR_UNARY_FUNCTION(log10)
_DEFINE_EXPR_UNARY_FUNCTION(sqrt)
#undef _DEFINE_EXPR_UNARY_FUNCTION
#define _DEFINE_EXPR_BINARY_FUNCTION(_Name) \
template<class _Dom1, class _Dom2> \
inline _Expr<_BinFunClos<_Expr,_Expr,_Dom1,_Dom2>,typename _Dom1::value_type>\
_Name (const _Expr<_Dom1,typename _Dom1::value_type>& __e1, \
const _Expr<_Dom2,typename _Dom2::value_type>& __e2) \
{ \
typedef typename _Dom1::value_type _Tp; \
typedef _BinFunClos<_Expr,_Expr,_Dom1,_Dom2> _Closure; \
return _Expr<_Closure,_Tp> \
(_Closure (__e1 (), __e2 (), (_Tp(*)(_Tp, _Tp))(&_Name))); \
} \
\
template<class _Dom> \
inline _Expr<_BinFunClos<_Expr,_ValArray,_Dom,typename _Dom::value_type>, \
typename _Dom::value_type> \
_Name (const _Expr<_Dom,typename _Dom::value_type>& __e, \
const valarray<typename _Dom::value_type>& __v) \
{ \
typedef typename _Dom::value_type _Tp; \
typedef _BinFunClos<_Expr,_ValArray,_Dom,_Tp> _Closure; \
return _Expr<_Closure,_Tp> \
(_Closure (__e (), __v, (_Tp(*)(_Tp, _Tp))(&_Name))); \
} \
\
template<class _Dom> \
inline _Expr<_BinFunClos<_ValArray,_Expr,typename _Dom::value_type,_Dom>, \
typename _Dom::value_type> \
_Name (const valarray<typename _Dom::valarray>& __v, \
const _Expr<_Dom,typename _Dom::value_type>& __e) \
{ \
typedef typename _Dom::value_type _Tp; \
typedef _BinFunClos<_ValArray,_Expr,_Tp,_Dom> _Closure; \
return _Expr<_Closure,_Tp> \
(_Closure (__v, __e (), (_Tp(*)(_Tp, _Tp))(&_Name))); \
} \
\
template<class _Dom> \
inline _Expr<_BinFunClos<_Expr,_Constant,_Dom,typename _Dom::value_type>, \
typename _Dom::value_type> \
_Name (const _Expr<_Dom, typename _Dom::value_type>& __e, \
const typename _Dom::value_type& __t) \
{ \
typedef typename _Dom::value_type _Tp; \
typedef _BinFunClos<_Expr,_Constant,_Dom,_Tp> _Closure; \
return _Expr<_Closure,_Tp> \
(_Closure (__e (), __t, (_Tp(*)(_Tp, _Tp))(&_Name))); \
} \
\
template<class _Dom> \
inline _Expr<_BinFunClos<_Constant,_Expr,typename _Dom::value_type,_Dom>, \
typename _Dom::value_type> \
_Name (const typename _Dom::value_type& __t, \
const _Expr<_Dom,typename _Dom::value_type>& __e) \
{ \
typedef typename _Dom::value_type _Tp; \
typedef _BinFunClos<_Constant,_Expr,_Tp,_Dom> _Closure; \
return _Expr<_Closure,_Tp> \
(_Closure (__t, __e (), (_Tp(*)(_Tp, _Tp))(&_Name))); \
} \
\
template<typename _Tp> \
inline _Expr<_BinFunClos<_ValArray,_ValArray,_Tp,_Tp>, _Tp> \
_Name (const valarray<_Tp>& __v, const valarray<_Tp>& __w) \
{ \
typedef _BinFunClos<_ValArray,_ValArray,_Tp,_Tp> _Closure; \
return _Expr<_Closure,_Tp> \
(_Closure (__v, __w, (_Tp(*)(_Tp,_Tp))(&_Name))); \
} \
\
template<typename _Tp> \
inline _Expr<_BinFunClos<_ValArray,_Constant,_Tp,_Tp>,_Tp> \
_Name (const valarray<_Tp>& __v, const _Tp& __t) \
{ \
typedef _BinFunClos<_ValArray,_Constant,_Tp,_Tp> _Closure; \
return _Expr<_Closure,_Tp> \
(_Closure (__v, __t, (_Tp(*)(_Tp,_Tp))(&_Name))); \
} \
\
template<typename _Tp> \
inline _Expr<_BinFunClos<_Constant,_ValArray,_Tp,_Tp>,_Tp> \
_Name (const _Tp& __t, const valarray<_Tp>& __v) \
{ \
typedef _BinFunClos<_Constant,_ValArray,_Tp,_Tp> _Closure; \
return _Expr<_Closure,_Tp> \
(_Closure (__t, __v, (_Tp(*)(_Tp,_Tp))(&_Name))); \
}
_DEFINE_EXPR_BINARY_FUNCTION(atan2)
_DEFINE_EXPR_BINARY_FUNCTION(pow)
#undef _DEFINE_EXPR_BINARY_FUNCTION
} // std::
#endif /* _CPP_VALARRAY_META_H */
// Local Variables:
// mode:c++
// End:
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