# valarray_before.h

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    00001 // The template and inlines for the -*- C++ -*- internal _Meta class.
    00002
    00003 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    00004 // 2006, 2007, 2008, 2009, 2010  Free Software Foundation, Inc.
    00005 //
    00006 // This file is part of the GNU ISO C++ Library.  This library is free
    00007 // software; you can redistribute it and/or modify it under the
    00008 // terms of the GNU General Public License as published by the
    00009 // Free Software Foundation; either version 3, or (at your option)
    00010 // any later version.
    00011
    00012 // This library is distributed in the hope that it will be useful,
    00013 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00015 // GNU General Public License for more details.
    00016
    00017 // Under Section 7 of GPL version 3, you are granted additional
    00018 // permissions described in the GCC Runtime Library Exception, version
    00019 // 3.1, as published by the Free Software Foundation.
    00020
    00021 // You should have received a copy of the GNU General Public License and
    00022 // a copy of the GCC Runtime Library Exception along with this program;
    00023 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    00024 // <http://www.gnu.org/licenses/>.
    00025
    00026 /** @file valarray_before.h
    00027  *  This is an internal header file, included by other library headers.
    00028  *  You should not attempt to use it directly.
    00029  */
    00030
    00031 // Written by Gabriel Dos Reis <Gabriel.Dos-Reis@cmla.ens-cachan.fr>
    00032
    00033 #ifndef _VALARRAY_BEFORE_H
    00034 #define _VALARRAY_BEFORE_H 1
    00035
    00036 #pragma GCC system_header
    00037
    00038 #include <bits/slice_array.h>
    00039
    00040 _GLIBCXX_BEGIN_NAMESPACE(std)
    00041
    00042   //
    00043   // Implementing a loosened valarray return value is tricky.
    00044   // First we need to meet 26.3.1/3: we should not add more than
    00045   // two levels of template nesting. Therefore we resort to template
    00046   // template to "flatten" loosened return value types.
    00047   // At some point we use partial specialization to remove one level
    00048   // template nesting due to _Expr<>
    00049   //
    00050
    00051   // This class is NOT defined. It doesn't need to.
    00052   template<typename _Tp1, typename _Tp2> class _Constant;
    00053
    00054   // Implementations of unary functions applied to valarray<>s.
    00055   // I use hard-coded object functions here instead of a generic
    00056   // approach like pointers to function:
    00057   //    1) correctness: some functions take references, others values.
    00058   //       we can't deduce the correct type afterwards.
    00059   //    2) efficiency -- object functions can be easily inlined
    00060   //    3) be Koenig-lookup-friendly
    00061
    00062   struct _Abs
    00063   {
    00064     template<typename _Tp>
    00065       _Tp operator()(const _Tp& __t) const
    00066       { return abs(__t); }
    00067   };
    00068
    00069   struct _Cos
    00070   {
    00071     template<typename _Tp>
    00072       _Tp operator()(const _Tp& __t) const
    00073       { return cos(__t); }
    00074   };
    00075
    00076   struct _Acos
    00077   {
    00078     template<typename _Tp>
    00079       _Tp operator()(const _Tp& __t) const
    00080       { return acos(__t); }
    00081   };
    00082
    00083   struct _Cosh
    00084   {
    00085     template<typename _Tp>
    00086       _Tp operator()(const _Tp& __t) const
    00087       { return cosh(__t); }
    00088   };
    00089
    00090   struct _Sin
    00091   {
    00092     template<typename _Tp>
    00093       _Tp operator()(const _Tp& __t) const
    00094       { return sin(__t); }
    00095   };
    00096
    00097   struct _Asin
    00098   {
    00099     template<typename _Tp>
    00100       _Tp operator()(const _Tp& __t) const
    00101       { return asin(__t); }
    00102   };
    00103
    00104   struct _Sinh
    00105   {
    00106     template<typename _Tp>
    00107       _Tp operator()(const _Tp& __t) const
    00108       { return sinh(__t); }
    00109   };
    00110
    00111   struct _Tan
    00112   {
    00113     template<typename _Tp>
    00114       _Tp operator()(const _Tp& __t) const
    00115       { return tan(__t); }
    00116   };
    00117
    00118   struct _Atan
    00119   {
    00120     template<typename _Tp>
    00121       _Tp operator()(const _Tp& __t) const
    00122       { return atan(__t); }
    00123   };
    00124
    00125   struct _Tanh
    00126   {
    00127     template<typename _Tp>
    00128       _Tp operator()(const _Tp& __t) const
    00129       { return tanh(__t); }
    00130   };
    00131
    00132   struct _Exp
    00133   {
    00134     template<typename _Tp>
    00135       _Tp operator()(const _Tp& __t) const
    00136       { return exp(__t); }
    00137   };
    00138
    00139   struct _Log
    00140   {
    00141     template<typename _Tp>
    00142       _Tp operator()(const _Tp& __t) const
    00143       { return log(__t); }
    00144   };
    00145
    00146   struct _Log10
    00147   {
    00148     template<typename _Tp>
    00149       _Tp operator()(const _Tp& __t) const
    00150       { return log10(__t); }
    00151   };
    00152
    00153   struct _Sqrt
    00154   {
    00155     template<typename _Tp>
    00156       _Tp operator()(const _Tp& __t) const
    00157       { return sqrt(__t); }
    00158   };
    00159
    00160   // In the past, we used to tailor operator applications semantics
    00161   // to the specialization of standard function objects (i.e. plus<>, etc.)
    00162   // That is incorrect.  Therefore we provide our own surrogates.
    00163
    00164   struct __unary_plus
    00165   {
    00166     template<typename _Tp>
    00167       _Tp operator()(const _Tp& __t) const
    00168       { return +__t; }
    00169   };
    00170
    00171   struct __negate
    00172   {
    00173     template<typename _Tp>
    00174       _Tp operator()(const _Tp& __t) const
    00175       { return -__t; }
    00176   };
    00177
    00178   struct __bitwise_not
    00179   {
    00180     template<typename _Tp>
    00181       _Tp operator()(const _Tp& __t) const
    00182       { return ~__t; }
    00183   };
    00184
    00185   struct __plus
    00186   {
    00187     template<typename _Tp>
    00188       _Tp operator()(const _Tp& __x, const _Tp& __y) const
    00189       { return __x + __y; }
    00190   };
    00191
    00192   struct __minus
    00193   {
    00194     template<typename _Tp>
    00195       _Tp operator()(const _Tp& __x, const _Tp& __y) const
    00196       { return __x - __y; }
    00197   };
    00198
    00199   struct __multiplies
    00200   {
    00201     template<typename _Tp>
    00202       _Tp operator()(const _Tp& __x, const _Tp& __y) const
    00203       { return __x * __y; }
    00204   };
    00205
    00206   struct __divides
    00207   {
    00208     template<typename _Tp>
    00209       _Tp operator()(const _Tp& __x, const _Tp& __y) const
    00210       { return __x / __y; }
    00211   };
    00212
    00213   struct __modulus
    00214   {
    00215     template<typename _Tp>
    00216       _Tp operator()(const _Tp& __x, const _Tp& __y) const
    00217       { return __x % __y; }
    00218   };
    00219
    00220   struct __bitwise_xor
    00221   {
    00222     template<typename _Tp>
    00223       _Tp operator()(const _Tp& __x, const _Tp& __y) const
    00224       { return __x ^ __y; }
    00225   };
    00226
    00227   struct __bitwise_and
    00228   {
    00229     template<typename _Tp>
    00230       _Tp operator()(const _Tp& __x, const _Tp& __y) const
    00231       { return __x & __y; }
    00232   };
    00233
    00234   struct __bitwise_or
    00235   {
    00236     template<typename _Tp>
    00237       _Tp operator()(const _Tp& __x, const _Tp& __y) const
    00238       { return __x | __y; }
    00239   };
    00240
    00241   struct __shift_left
    00242   {
    00243     template<typename _Tp>
    00244       _Tp operator()(const _Tp& __x, const _Tp& __y) const
    00245       { return __x << __y; }
    00246   };
    00247
    00248   struct __shift_right
    00249   {
    00250     template<typename _Tp>
    00251       _Tp operator()(const _Tp& __x, const _Tp& __y) const
    00252       { return __x >> __y; }
    00253   };
    00254
    00255   struct __logical_and
    00256   {
    00257     template<typename _Tp>
    00258       bool operator()(const _Tp& __x, const _Tp& __y) const
    00259       { return __x && __y; }
    00260   };
    00261
    00262   struct __logical_or
    00263   {
    00264     template<typename _Tp>
    00265       bool operator()(const _Tp& __x, const _Tp& __y) const
    00266       { return __x || __y; }
    00267   };
    00268
    00269   struct __logical_not
    00270   {
    00271     template<typename _Tp>
    00272       bool operator()(const _Tp& __x) const
    00273       { return !__x; }
    00274   };
    00275
    00276   struct __equal_to
    00277   {
    00278     template<typename _Tp>
    00279       bool operator()(const _Tp& __x, const _Tp& __y) const
    00280       { return __x == __y; }
    00281   };
    00282
    00283   struct __not_equal_to
    00284   {
    00285     template<typename _Tp>
    00286       bool operator()(const _Tp& __x, const _Tp& __y) const
    00287       { return __x != __y; }
    00288   };
    00289
    00290   struct __less
    00291   {
    00292     template<typename _Tp>
    00293       bool operator()(const _Tp& __x, const _Tp& __y) const
    00294       { return __x < __y; }
    00295   };
    00296
    00297   struct __greater
    00298   {
    00299     template<typename _Tp>
    00300       bool operator()(const _Tp& __x, const _Tp& __y) const
    00301       { return __x > __y; }
    00302   };
    00303
    00304   struct __less_equal
    00305   {
    00306     template<typename _Tp>
    00307       bool operator()(const _Tp& __x, const _Tp& __y) const
    00308       { return __x <= __y; }
    00309   };
    00310
    00311   struct __greater_equal
    00312   {
    00313     template<typename _Tp>
    00314       bool operator()(const _Tp& __x, const _Tp& __y) const
    00315       { return __x >= __y; }
    00316   };
    00317
    00318   // The few binary functions we miss.
    00319   struct _Atan2
    00320   {
    00321     template<typename _Tp>
    00322       _Tp operator()(const _Tp& __x, const _Tp& __y) const
    00323       { return atan2(__x, __y); }
    00324   };
    00325
    00326   struct _Pow
    00327   {
    00328     template<typename _Tp>
    00329       _Tp operator()(const _Tp& __x, const _Tp& __y) const
    00330       { return pow(__x, __y); }
    00331   };
    00332
    00333
    00334   // We need these bits in order to recover the return type of
    00335   // some functions/operators now that we're no longer using
    00336   // function templates.
    00337   template<typename, typename _Tp>
    00338     struct __fun
    00339     {
    00340       typedef _Tp result_type;
    00341     };
    00342
    00343   // several specializations for relational operators.
    00344   template<typename _Tp>
    00345     struct __fun<__logical_not, _Tp>
    00346     {
    00347       typedef bool result_type;
    00348     };
    00349
    00350   template<typename _Tp>
    00351     struct __fun<__logical_and, _Tp>
    00352     {
    00353       typedef bool result_type;
    00354     };
    00355
    00356   template<typename _Tp>
    00357     struct __fun<__logical_or, _Tp>
    00358     {
    00359       typedef bool result_type;
    00360     };
    00361
    00362   template<typename _Tp>
    00363     struct __fun<__less, _Tp>
    00364     {
    00365       typedef bool result_type;
    00366     };
    00367
    00368   template<typename _Tp>
    00369     struct __fun<__greater, _Tp>
    00370     {
    00371       typedef bool result_type;
    00372     };
    00373
    00374   template<typename _Tp>
    00375     struct __fun<__less_equal, _Tp>
    00376     {
    00377       typedef bool result_type;
    00378     };
    00379
    00380   template<typename _Tp>
    00381     struct __fun<__greater_equal, _Tp>
    00382     {
    00383       typedef bool result_type;
    00384     };
    00385
    00386   template<typename _Tp>
    00387     struct __fun<__equal_to, _Tp>
    00388     {
    00389       typedef bool result_type;
    00390     };
    00391
    00392   template<typename _Tp>
    00393     struct __fun<__not_equal_to, _Tp>
    00394     {
    00395       typedef bool result_type;
    00396     };
    00397
    00398   //
    00399   // Apply function taking a value/const reference closure
    00400   //
    00401
    00402   template<typename _Dom, typename _Arg>
    00403     class _FunBase
    00404     {
    00405     public:
    00406       typedef typename _Dom::value_type value_type;
    00407
    00408       _FunBase(const _Dom& __e, value_type __f(_Arg))
    00409       : _M_expr(__e), _M_func(__f) {}
    00410
    00411       value_type operator[](size_t __i) const
    00412       { return _M_func (_M_expr[__i]); }
    00413
    00414       size_t size() const { return _M_expr.size ();}
    00415
    00416     private:
    00417       const _Dom& _M_expr;
    00418       value_type (*_M_func)(_Arg);
    00419     };
    00420
    00421   template<class _Dom>
    00422     struct _ValFunClos<_Expr,_Dom> : _FunBase<_Dom, typename _Dom::value_type>
    00423     {
    00424       typedef _FunBase<_Dom, typename _Dom::value_type> _Base;
    00425       typedef typename _Base::value_type value_type;
    00426       typedef value_type _Tp;
    00427
    00428       _ValFunClos(const _Dom& __e, _Tp __f(_Tp)) : _Base(__e, __f) {}
    00429     };
    00430
    00431   template<typename _Tp>
    00432     struct _ValFunClos<_ValArray,_Tp> : _FunBase<valarray<_Tp>, _Tp>
    00433     {
    00434       typedef _FunBase<valarray<_Tp>, _Tp> _Base;
    00435       typedef _Tp value_type;
    00436
    00437       _ValFunClos(const valarray<_Tp>& __v, _Tp __f(_Tp)) : _Base(__v, __f) {}
    00438     };
    00439
    00440   template<class _Dom>
    00441     struct _RefFunClos<_Expr, _Dom>
    00442     : _FunBase<_Dom, const typename _Dom::value_type&>
    00443     {
    00444       typedef _FunBase<_Dom, const typename _Dom::value_type&> _Base;
    00445       typedef typename _Base::value_type value_type;
    00446       typedef value_type _Tp;
    00447
    00448       _RefFunClos(const _Dom& __e, _Tp __f(const _Tp&))
    00449       : _Base(__e, __f) {}
    00450     };
    00451
    00452   template<typename _Tp>
    00453     struct _RefFunClos<_ValArray, _Tp>
    00454     : _FunBase<valarray<_Tp>, const _Tp&>
    00455     {
    00456       typedef _FunBase<valarray<_Tp>, const _Tp&> _Base;
    00457       typedef _Tp value_type;
    00458
    00459       _RefFunClos(const valarray<_Tp>& __v, _Tp __f(const _Tp&))
    00460       : _Base(__v, __f) {}
    00461     };
    00462
    00463   //
    00464   // Unary expression closure.
    00465   //
    00466
    00467   template<class _Oper, class _Arg>
    00468     class _UnBase
    00469     {
    00470     public:
    00471       typedef typename _Arg::value_type _Vt;
    00472       typedef typename __fun<_Oper, _Vt>::result_type value_type;
    00473
    00474       _UnBase(const _Arg& __e) : _M_expr(__e) {}
    00475
    00476       value_type operator[](size_t __i) const
    00477       { return _Oper()(_M_expr[__i]); }
    00478
    00479       size_t size() const { return _M_expr.size(); }
    00480
    00481     private:
    00482       const _Arg& _M_expr;
    00483     };
    00484
    00485   template<class _Oper, class _Dom>
    00486     struct _UnClos<_Oper, _Expr, _Dom>
    00487     : _UnBase<_Oper, _Dom>
    00488     {
    00489       typedef _Dom _Arg;
    00490       typedef _UnBase<_Oper, _Dom> _Base;
    00491       typedef typename _Base::value_type value_type;
    00492
    00493       _UnClos(const _Arg& __e) : _Base(__e) {}
    00494     };
    00495
    00496   template<class _Oper, typename _Tp>
    00497     struct _UnClos<_Oper, _ValArray, _Tp>
    00498     : _UnBase<_Oper, valarray<_Tp> >
    00499     {
    00500       typedef valarray<_Tp> _Arg;
    00501       typedef _UnBase<_Oper, valarray<_Tp> > _Base;
    00502       typedef typename _Base::value_type value_type;
    00503
    00504       _UnClos(const _Arg& __e) : _Base(__e) {}
    00505     };
    00506
    00507
    00508   //
    00509   // Binary expression closure.
    00510   //
    00511
    00512   template<class _Oper, class _FirstArg, class _SecondArg>
    00513     class _BinBase
    00514     {
    00515     public:
    00516       typedef typename _FirstArg::value_type _Vt;
    00517       typedef typename __fun<_Oper, _Vt>::result_type value_type;
    00518
    00519       _BinBase(const _FirstArg& __e1, const _SecondArg& __e2)
    00520       : _M_expr1(__e1), _M_expr2(__e2) {}
    00521
    00522       value_type operator[](size_t __i) const
    00523       { return _Oper()(_M_expr1[__i], _M_expr2[__i]); }
    00524
    00525       size_t size() const { return _M_expr1.size(); }
    00526
    00527     private:
    00528       const _FirstArg& _M_expr1;
    00529       const _SecondArg& _M_expr2;
    00530     };
    00531
    00532
    00533   template<class _Oper, class _Clos>
    00534     class _BinBase2
    00535     {
    00536     public:
    00537       typedef typename _Clos::value_type _Vt;
    00538       typedef typename __fun<_Oper, _Vt>::result_type value_type;
    00539
    00540       _BinBase2(const _Clos& __e, const _Vt& __t)
    00541       : _M_expr1(__e), _M_expr2(__t) {}
    00542
    00543       value_type operator[](size_t __i) const
    00544       { return _Oper()(_M_expr1[__i], _M_expr2); }
    00545
    00546       size_t size() const { return _M_expr1.size(); }
    00547
    00548     private:
    00549       const _Clos& _M_expr1;
    00550       const _Vt& _M_expr2;
    00551     };
    00552
    00553   template<class _Oper, class _Clos>
    00554     class _BinBase1
    00555     {
    00556     public:
    00557       typedef typename _Clos::value_type _Vt;
    00558       typedef typename __fun<_Oper, _Vt>::result_type value_type;
    00559
    00560       _BinBase1(const _Vt& __t, const _Clos& __e)
    00561       : _M_expr1(__t), _M_expr2(__e) {}
    00562
    00563       value_type operator[](size_t __i) const
    00564       { return _Oper()(_M_expr1, _M_expr2[__i]); }
    00565
    00566       size_t size() const { return _M_expr2.size(); }
    00567
    00568     private:
    00569       const _Vt& _M_expr1;
    00570       const _Clos& _M_expr2;
    00571     };
    00572
    00573   template<class _Oper, class _Dom1, class _Dom2>
    00574     struct _BinClos<_Oper, _Expr, _Expr, _Dom1, _Dom2>
    00575     : _BinBase<_Oper, _Dom1, _Dom2>
    00576     {
    00577       typedef _BinBase<_Oper, _Dom1, _Dom2> _Base;
    00578       typedef typename _Base::value_type value_type;
    00579
    00580       _BinClos(const _Dom1& __e1, const _Dom2& __e2) : _Base(__e1, __e2) {}
    00581     };
    00582
    00583   template<class _Oper, typename _Tp>
    00584     struct _BinClos<_Oper,_ValArray, _ValArray, _Tp, _Tp>
    00585     : _BinBase<_Oper, valarray<_Tp>, valarray<_Tp> >
    00586     {
    00587       typedef _BinBase<_Oper, valarray<_Tp>, valarray<_Tp> > _Base;
    00588       typedef typename _Base::value_type value_type;
    00589
    00590       _BinClos(const valarray<_Tp>& __v, const valarray<_Tp>& __w)
    00591       : _Base(__v, __w) {}
    00592     };
    00593
    00594   template<class _Oper, class _Dom>
    00595     struct _BinClos<_Oper, _Expr, _ValArray, _Dom, typename _Dom::value_type>
    00596     : _BinBase<_Oper, _Dom, valarray<typename _Dom::value_type> >
    00597     {
    00598       typedef typename _Dom::value_type _Tp;
    00599       typedef _BinBase<_Oper,_Dom,valarray<_Tp> > _Base;
    00600       typedef typename _Base::value_type value_type;
    00601
    00602       _BinClos(const _Dom& __e1, const valarray<_Tp>& __e2)
    00603       : _Base(__e1, __e2) {}
    00604     };
    00605
    00606   template<class _Oper, class _Dom>
    00607     struct _BinClos<_Oper, _ValArray, _Expr, typename _Dom::value_type, _Dom>
    00608     : _BinBase<_Oper, valarray<typename _Dom::value_type>,_Dom>
    00609     {
    00610       typedef typename _Dom::value_type _Tp;
    00611       typedef _BinBase<_Oper, valarray<_Tp>, _Dom> _Base;
    00612       typedef typename _Base::value_type value_type;
    00613
    00614       _BinClos(const valarray<_Tp>& __e1, const _Dom& __e2)
    00615       : _Base(__e1, __e2) {}
    00616     };
    00617
    00618   template<class _Oper, class _Dom>
    00619     struct _BinClos<_Oper, _Expr, _Constant, _Dom, typename _Dom::value_type>
    00620     : _BinBase2<_Oper, _Dom>
    00621     {
    00622       typedef typename _Dom::value_type _Tp;
    00623       typedef _BinBase2<_Oper,_Dom> _Base;
    00624       typedef typename _Base::value_type value_type;
    00625
    00626       _BinClos(const _Dom& __e1, const _Tp& __e2) : _Base(__e1, __e2) {}
    00627     };
    00628
    00629   template<class _Oper, class _Dom>
    00630     struct _BinClos<_Oper, _Constant, _Expr, typename _Dom::value_type, _Dom>
    00631     : _BinBase1<_Oper, _Dom>
    00632     {
    00633       typedef typename _Dom::value_type _Tp;
    00634       typedef _BinBase1<_Oper, _Dom> _Base;
    00635       typedef typename _Base::value_type value_type;
    00636
    00637       _BinClos(const _Tp& __e1, const _Dom& __e2) : _Base(__e1, __e2) {}
    00638     };
    00639
    00640   template<class _Oper, typename _Tp>
    00641     struct _BinClos<_Oper, _ValArray, _Constant, _Tp, _Tp>
    00642     : _BinBase2<_Oper, valarray<_Tp> >
    00643     {
    00644       typedef _BinBase2<_Oper,valarray<_Tp> > _Base;
    00645       typedef typename _Base::value_type value_type;
    00646
    00647       _BinClos(const valarray<_Tp>& __v, const _Tp& __t) : _Base(__v, __t) {}
    00648     };
    00649
    00650   template<class _Oper, typename _Tp>
    00651     struct _BinClos<_Oper, _Constant, _ValArray, _Tp, _Tp>
    00652     : _BinBase1<_Oper, valarray<_Tp> >
    00653     {
    00654       typedef _BinBase1<_Oper, valarray<_Tp> > _Base;
    00655       typedef typename _Base::value_type value_type;
    00656
    00657       _BinClos(const _Tp& __t, const valarray<_Tp>& __v) : _Base(__t, __v) {}
    00658     };
    00659
    00660     //
    00661     // slice_array closure.
    00662     //
    00663   template<typename _Dom>
    00664     class _SBase
    00665     {
    00666     public:
    00667       typedef typename _Dom::value_type value_type;
    00668
    00669       _SBase (const _Dom& __e, const slice& __s)
    00670       : _M_expr (__e), _M_slice (__s) {}
    00671
    00672       value_type
    00673       operator[] (size_t __i) const
    00674       { return _M_expr[_M_slice.start () + __i * _M_slice.stride ()]; }
    00675
    00676       size_t
    00677       size() const
    00678       { return _M_slice.size (); }
    00679
    00680     private:
    00681       const _Dom& _M_expr;
    00682       const slice& _M_slice;
    00683     };
    00684
    00685   template<typename _Tp>
    00686     class _SBase<_Array<_Tp> >
    00687     {
    00688     public:
    00689       typedef _Tp value_type;
    00690
    00691       _SBase (_Array<_Tp> __a, const slice& __s)
    00692       : _M_array (__a._M_data+__s.start()), _M_size (__s.size()),
    00693     _M_stride (__s.stride()) {}
    00694
    00695       value_type
    00696       operator[] (size_t __i) const
    00697       { return _M_array._M_data[__i * _M_stride]; }
    00698
    00699       size_t
    00700       size() const
    00701       { return _M_size; }
    00702
    00703     private:
    00704       const _Array<_Tp> _M_array;
    00705       const size_t _M_size;
    00706       const size_t _M_stride;
    00707     };
    00708
    00709   template<class _Dom>
    00710     struct _SClos<_Expr, _Dom>
    00711     : _SBase<_Dom>
    00712     {
    00713       typedef _SBase<_Dom> _Base;
    00714       typedef typename _Base::value_type value_type;
    00715
    00716       _SClos (const _Dom& __e, const slice& __s) : _Base (__e, __s) {}
    00717     };
    00718
    00719   template<typename _Tp>
    00720     struct _SClos<_ValArray, _Tp>
    00721     : _SBase<_Array<_Tp> >
    00722     {
    00723       typedef  _SBase<_Array<_Tp> > _Base;
    00724       typedef _Tp value_type;
    00725
    00726       _SClos (_Array<_Tp> __a, const slice& __s) : _Base (__a, __s) {}
    00727     };
    00728
    00729 _GLIBCXX_END_NAMESPACE
    00730
    00731 #endif /* _CPP_VALARRAY_BEFORE_H */