gnu/dist/gcc4/libstdc++-v3/include/bits/valarray_array.h

   1 // The template and inlines for the -*- C++ -*- internal _Array helper class.
   2
   3 // Copyright (C) 1997, 1998, 1999, 2000, 2003, 2004, 2005
   4 //  Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 // As a special exception, you may use this file as part of a free software
  23 // library without restriction.  Specifically, if other files instantiate
  24 // templates or use macros or inline functions from this file, or you compile
  25 // this file and link it with other files to produce an executable, this
  26 // file does not by itself cause the resulting executable to be covered by
  27 // the GNU General Public License.  This exception does not however
  28 // invalidate any other reasons why the executable file might be covered by
  29 // the GNU General Public License.
  30
  31 // Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>
  32
  33 /** @file valarray_array.h
  34  *  This is an internal header file, included by other library headers.
  35  *  You should not attempt to use it directly.
  36  */
  37
  38 #ifndef _VALARRAY_ARRAY_H
  39 #define _VALARRAY_ARRAY_H 1
  40
  41 #pragma GCC system_header
  42
  43 #include <bits/c++config.h>
  44 #include <bits/cpp_type_traits.h>
  45 #include <cstdlib>
  46 #include <cstring>
  47 #include <new>
  48
  49 namespace std
  50 {
  51   //
  52   // Helper functions on raw pointers
  53   //
  54
  55   // We get memory by the old fashion way
  56   inline void*
  57   __valarray_get_memory(size_t __n)
  58   { return operator new(__n); }
  59
  60   template<typename _Tp>
  61     inline _Tp*__restrict__
  62     __valarray_get_storage(size_t __n)
  63     {
  64       return static_cast<_Tp*__restrict__>
  65         (std::__valarray_get_memory(__n * sizeof(_Tp)));
  66     }
  67
  68   // Return memory to the system
  69   inline void
  70   __valarray_release_memory(void* __p)
  71   { operator delete(__p); }
  72
  73   // Turn a raw-memory into an array of _Tp filled with _Tp()
  74   // This is required in 'valarray<T> v(n);'
  75   template<typename _Tp, bool>
  76     struct _Array_default_ctor
  77     {
  78       // Please note that this isn't exception safe.  But
  79       // valarrays aren't required to be exception safe.
  80       inline static void
  81       _S_do_it(_Tp* __restrict__ __b, _Tp* __restrict__ __e)
  82       {
  83         while (__b != __e)
  84           new(__b++) _Tp();
  85       }
  86     };
  87
  88   template<typename _Tp>
  89     struct _Array_default_ctor<_Tp, true>
  90     {
  91       // For fundamental types, it suffices to say 'memset()'
  92       inline static void
  93       _S_do_it(_Tp* __restrict__ __b, _Tp* __restrict__ __e)
  94       { std::memset(__b, 0, (__e - __b) * sizeof(_Tp)); }
  95     };
  96
  97   template<typename _Tp>
  98     inline void
  99     __valarray_default_construct(_Tp* __restrict__ __b, _Tp* __restrict__ __e)
 100     {
 101       _Array_default_ctor<_Tp, __is_fundamental<_Tp>::__value>::
 102         _S_do_it(__b, __e);
 103     }
 104
 105   // Turn a raw-memory into an array of _Tp filled with __t
 106   // This is the required in valarray<T> v(n, t).  Also
 107   // used in valarray<>::resize().
 108   template<typename _Tp, bool>
 109     struct _Array_init_ctor
 110     {
 111       // Please note that this isn't exception safe.  But
 112       // valarrays aren't required to be exception safe.
 113       inline static void
 114       _S_do_it(_Tp* __restrict__ __b, _Tp* __restrict__ __e, const _Tp __t)
 115       {
 116         while (__b != __e)
 117           new(__b++) _Tp(__t);
 118       }
 119     };
 120
 121   template<typename _Tp>
 122     struct _Array_init_ctor<_Tp, true>
 123     {
 124       inline static void
 125       _S_do_it(_Tp* __restrict__ __b, _Tp* __restrict__ __e,  const _Tp __t)
 126       {
 127         while (__b != __e)
 128           *__b++ = __t;
 129       }
 130     };
 131
 132   template<typename _Tp>
 133     inline void
 134     __valarray_fill_construct(_Tp* __restrict__ __b, _Tp* __restrict__ __e,
 135                               const _Tp __t)
 136     {
 137       _Array_init_ctor<_Tp, __is_fundamental<_Tp>::__value>::
 138         _S_do_it(__b, __e, __t);
 139     }
 140
 141   //
 142   // copy-construct raw array [__o, *) from plain array [__b, __e)
 143   // We can't just say 'memcpy()'
 144   //
 145   template<typename _Tp, bool>
 146     struct _Array_copy_ctor
 147     {
 148       // Please note that this isn't exception safe.  But
 149       // valarrays aren't required to be exception safe.
 150       inline static void
 151       _S_do_it(const _Tp* __restrict__ __b, const _Tp* __restrict__ __e,
 152                _Tp* __restrict__ __o)
 153       {
 154         while (__b != __e)
 155           new(__o++) _Tp(*__b++);
 156       }
 157     };
 158
 159   template<typename _Tp>
 160     struct _Array_copy_ctor<_Tp, true>
 161     {
 162       inline static void
 163       _S_do_it(const _Tp* __restrict__ __b, const _Tp* __restrict__ __e,
 164                _Tp* __restrict__ __o)
 165       { std::memcpy(__o, __b, (__e - __b)*sizeof(_Tp)); }
 166     };
 167
 168   template<typename _Tp>
 169     inline void
 170     __valarray_copy_construct(const _Tp* __restrict__ __b,
 171                               const _Tp* __restrict__ __e,
 172                               _Tp* __restrict__ __o)
 173     {
 174       _Array_copy_ctor<_Tp, __is_fundamental<_Tp>::__value>::
 175         _S_do_it(__b, __e, __o);
 176     }
 177
 178   // copy-construct raw array [__o, *) from strided array __a[<__n : __s>]
 179   template<typename _Tp>
 180     inline void
 181     __valarray_copy_construct (const _Tp* __restrict__ __a, size_t __n,
 182                                size_t __s, _Tp* __restrict__ __o)
 183     {
 184       if (__is_fundamental<_Tp>::__value)
 185         while (__n--)
 186           {
 187             *__o++ = *__a;
 188             __a += __s;
 189           }
 190       else
 191         while (__n--)
 192           {
 193             new(__o++) _Tp(*__a);
 194             __a += __s;
 195           }
 196     }
 197
 198   // copy-construct raw array [__o, *) from indexed array __a[__i[<__n>]]
 199   template<typename _Tp>
 200     inline void
 201     __valarray_copy_construct (const _Tp* __restrict__ __a,
 202                                const size_t* __restrict__ __i,
 203                                _Tp* __restrict__ __o, size_t __n)
 204     {
 205       if (__is_fundamental<_Tp>::__value)
 206         while (__n--)
 207           *__o++ = __a[*__i++];
 208       else
 209         while (__n--)
 210           new (__o++) _Tp(__a[*__i++]);
 211     }
 212
 213   // Do the necessary cleanup when we're done with arrays.
 214   template<typename _Tp>
 215     inline void
 216     __valarray_destroy_elements(_Tp* __restrict__ __b, _Tp* __restrict__ __e)
 217     {
 218       if (!__is_fundamental<_Tp>::__value)
 219         while (__b != __e)
 220           {
 221             __b->~_Tp();
 222             ++__b;
 223           }
 224     }
 225
 226   // Fill a plain array __a[<__n>] with __t
 227   template<typename _Tp>
 228     inline void
 229     __valarray_fill(_Tp* __restrict__ __a, size_t __n, const _Tp& __t)
 230     {
 231       while (__n--)
 232         *__a++ = __t;
 233     }
 234
 235   // fill strided array __a[<__n-1 : __s>] with __t
 236   template<typename _Tp>
 237     inline void
 238     __valarray_fill(_Tp* __restrict__ __a, size_t __n,
 239                     size_t __s, const _Tp& __t)
 240     {
 241       for (size_t __i = 0; __i < __n; ++__i, __a += __s)
 242         *__a = __t;
 243     }
 244
 245   // fill indir   ect array __a[__i[<__n>]] with __i
 246   template<typename _Tp>
 247     inline void
 248     __valarray_fill(_Tp* __restrict__ __a, const size_t* __restrict__ __i,
 249                     size_t __n, const _Tp& __t)
 250     {
 251       for (size_t __j = 0; __j < __n; ++__j, ++__i)
 252         __a[*__i] = __t;
 253     }
 254
 255   // copy plain array __a[<__n>] in __b[<__n>]
 256   // For non-fundamental types, it is wrong to say 'memcpy()'
 257   template<typename _Tp, bool>
 258     struct _Array_copier
 259     {
 260       inline static void
 261       _S_do_it(const _Tp* __restrict__ __a, size_t __n, _Tp* __restrict__ __b)
 262       {
 263         while(__n--)
 264           *__b++ = *__a++;
 265       }
 266     };
 267
 268   template<typename _Tp>
 269     struct _Array_copier<_Tp, true>
 270     {
 271       inline static void
 272       _S_do_it(const _Tp* __restrict__ __a, size_t __n, _Tp* __restrict__ __b)
 273       { std::memcpy (__b, __a, __n * sizeof (_Tp)); }
 274     };
 275
 276   // Copy a plain array __a[<__n>] into a play array __b[<>]
 277   template<typename _Tp>
 278     inline void
 279     __valarray_copy(const _Tp* __restrict__ __a, size_t __n,
 280                     _Tp* __restrict__ __b)
 281     {
 282       _Array_copier<_Tp, __is_fundamental<_Tp>::__value>::
 283         _S_do_it(__a, __n, __b);
 284     }
 285
 286   // Copy strided array __a[<__n : __s>] in plain __b[<__n>]
 287   template<typename _Tp>
 288     inline void
 289     __valarray_copy(const _Tp* __restrict__ __a, size_t __n, size_t __s,
 290                     _Tp* __restrict__ __b)
 291     {
 292       for (size_t __i = 0; __i < __n; ++__i, ++__b, __a += __s)
 293         *__b = *__a;
 294     }
 295
 296   // Copy a plain array  __a[<__n>] into a strided array __b[<__n : __s>]
 297   template<typename _Tp>
 298     inline void
 299     __valarray_copy(const _Tp* __restrict__ __a, _Tp* __restrict__ __b,
 300                     size_t __n, size_t __s)
 301     {
 302       for (size_t __i = 0; __i < __n; ++__i, ++__a, __b += __s)
 303         *__b = *__a;
 304     }
 305
 306   // Copy strided array __src[<__n : __s1>] into another
 307   // strided array __dst[< : __s2>].  Their sizes must match.
 308   template<typename _Tp>
 309     inline void
 310     __valarray_copy(const _Tp* __restrict__ __src, size_t __n, size_t __s1,
 311                     _Tp* __restrict__ __dst, size_t __s2)
 312     {
 313       for (size_t __i = 0; __i < __n; ++__i)
 314         __dst[__i * __s2] = __src[__i * __s1];
 315     }
 316
 317   // Copy an indexed array __a[__i[<__n>]] in plain array __b[<__n>]
 318   template<typename _Tp>
 319     inline void
 320     __valarray_copy(const _Tp* __restrict__ __a,
 321                     const size_t* __restrict__ __i,
 322                     _Tp* __restrict__ __b, size_t __n)
 323     {
 324       for (size_t __j = 0; __j < __n; ++__j, ++__b, ++__i)
 325         *__b = __a[*__i];
 326     }
 327
 328   // Copy a plain array __a[<__n>] in an indexed array __b[__i[<__n>]]
 329   template<typename _Tp>
 330     inline void
 331     __valarray_copy(const _Tp* __restrict__ __a, size_t __n,
 332                     _Tp* __restrict__ __b, const size_t* __restrict__ __i)
 333     {
 334       for (size_t __j = 0; __j < __n; ++__j, ++__a, ++__i)
 335         __b[*__i] = *__a;
 336     }
 337
 338   // Copy the __n first elements of an indexed array __src[<__i>] into
 339   // another indexed array __dst[<__j>].
 340   template<typename _Tp>
 341     inline void
 342     __valarray_copy(const _Tp* __restrict__ __src, size_t __n,
 343                     const size_t* __restrict__ __i,
 344                     _Tp* __restrict__ __dst, const size_t* __restrict__ __j)
 345     {
 346       for (size_t __k = 0; __k < __n; ++__k)
 347         __dst[*__j++] = __src[*__i++];
 348     }
 349
 350   //
 351   // Compute the sum of elements in range [__f, __l)
 352   // This is a naive algorithm.  It suffers from cancelling.
 353   // In the future try to specialize
 354   // for _Tp = float, double, long double using a more accurate
 355   // algorithm.
 356   //
 357   template<typename _Tp>
 358     inline _Tp
 359     __valarray_sum(const _Tp* __restrict__ __f, const _Tp* __restrict__ __l)
 360     {
 361       _Tp __r = _Tp();
 362       while (__f != __l)
 363         __r += *__f++;
 364       return __r;
 365     }
 366
 367   // Compute the product of all elements in range [__f, __l)
 368   template<typename _Tp>
 369     inline _Tp
 370     __valarray_product(const _Tp* __restrict__ __f,
 371                        const _Tp* __restrict__ __l)
 372     {
 373       _Tp __r = _Tp(1);
 374       while (__f != __l)
 375         __r = __r * *__f++;
 376       return __r;
 377     }
 378
 379   // Compute the min/max of an array-expression
 380   template<typename _Ta>
 381     inline typename _Ta::value_type
 382     __valarray_min(const _Ta& __a)
 383     {
 384       size_t __s = __a.size();
 385       typedef typename _Ta::value_type _Value_type;
 386       _Value_type __r = __s == 0 ? _Value_type() : __a[0];
 387       for (size_t __i = 1; __i < __s; ++__i)
 388         {
 389           _Value_type __t = __a[__i];
 390           if (__t < __r)
 391             __r = __t;
 392         }
 393       return __r;
 394     }
 395
 396   template<typename _Ta>
 397     inline typename _Ta::value_type
 398     __valarray_max(const _Ta& __a)
 399     {
 400       size_t __s = __a.size();
 401       typedef typename _Ta::value_type _Value_type;
 402       _Value_type __r = __s == 0 ? _Value_type() : __a[0];
 403       for (size_t __i = 1; __i < __s; ++__i)
 404         {
 405           _Value_type __t = __a[__i];
 406           if (__t > __r)
 407             __r = __t;
 408         }
 409       return __r;
 410     }
 411
 412   //
 413   // Helper class _Array, first layer of valarray abstraction.
 414   // All operations on valarray should be forwarded to this class
 415   // whenever possible. -- gdr
 416   //
 417
 418   template<typename _Tp>
 419     struct _Array
 420     {
 421       explicit _Array(size_t);
 422       explicit _Array(_Tp* const __restrict__);
 423       explicit _Array(const valarray<_Tp>&);
 424       _Array(const _Tp* __restrict__, size_t);
 425
 426       _Tp* begin() const;
 427
 428       _Tp* const __restrict__ _M_data;
 429     };
 430
 431   template<typename _Tp>
 432     inline void
 433     __valarray_fill (_Array<_Tp> __a, size_t __n, const _Tp& __t)
 434     { std::__valarray_fill(__a._M_data, __n, __t); }
 435
 436   template<typename _Tp>
 437     inline void
 438     __valarray_fill(_Array<_Tp> __a, size_t __n, size_t __s, const _Tp& __t)
 439     { std::__valarray_fill(__a._M_data, __n, __s, __t); }
 440
 441   template<typename _Tp>
 442     inline void
 443     __valarray_fill(_Array<_Tp> __a, _Array<size_t> __i,
 444                     size_t __n, const _Tp& __t)
 445     { std::__valarray_fill(__a._M_data, __i._M_data, __n, __t); }
 446
 447   // Copy a plain array __a[<__n>] into a play array __b[<>]
 448   template<typename _Tp>
 449     inline void
 450     __valarray_copy(_Array<_Tp> __a, size_t __n, _Array<_Tp> __b)
 451     { std::__valarray_copy(__a._M_data, __n, __b._M_data); }
 452
 453   // Copy strided array __a[<__n : __s>] in plain __b[<__n>]
 454   template<typename _Tp>
 455     inline void
 456     __valarray_copy(_Array<_Tp> __a, size_t __n, size_t __s, _Array<_Tp> __b)
 457     { std::__valarray_copy(__a._M_data, __n, __s, __b._M_data); }
 458
 459   // Copy a plain array  __a[<__n>] into a strided array __b[<__n : __s>]
 460   template<typename _Tp>
 461     inline void
 462     __valarray_copy(_Array<_Tp> __a, _Array<_Tp> __b, size_t __n, size_t __s)
 463     { __valarray_copy(__a._M_data, __b._M_data, __n, __s); }
 464
 465   // Copy strided array __src[<__n : __s1>] into another
 466   // strided array __dst[< : __s2>].  Their sizes must match.
 467   template<typename _Tp>
 468     inline void
 469     __valarray_copy(_Array<_Tp> __a, size_t __n, size_t __s1,
 470                     _Array<_Tp> __b, size_t __s2)
 471     { std::__valarray_copy(__a._M_data, __n, __s1, __b._M_data, __s2); }
 472
 473   // Copy an indexed array __a[__i[<__n>]] in plain array __b[<__n>]
 474   template<typename _Tp>
 475     inline void
 476     __valarray_copy(_Array<_Tp> __a, _Array<size_t> __i,
 477                     _Array<_Tp> __b, size_t __n)
 478     { std::__valarray_copy(__a._M_data, __i._M_data, __b._M_data, __n); }
 479
 480   // Copy a plain array __a[<__n>] in an indexed array __b[__i[<__n>]]
 481   template<typename _Tp>
 482     inline void
 483     __valarray_copy(_Array<_Tp> __a, size_t __n, _Array<_Tp> __b,
 484                     _Array<size_t> __i)
 485     { std::__valarray_copy(__a._M_data, __n, __b._M_data, __i._M_data); }
 486
 487   // Copy the __n first elements of an indexed array __src[<__i>] into
 488   // another indexed array __dst[<__j>].
 489   template<typename _Tp>
 490     inline void
 491     __valarray_copy(_Array<_Tp> __src, size_t __n, _Array<size_t> __i,
 492                     _Array<_Tp> __dst, _Array<size_t> __j)
 493     {
 494       std::__valarray_copy(__src._M_data, __n, __i._M_data,
 495                     __dst._M_data, __j._M_data);
 496     }
 497
 498   template<typename _Tp>
 499     inline
 500     _Array<_Tp>::_Array(size_t __n)
 501     : _M_data(__valarray_get_storage<_Tp>(__n))
 502     { std::__valarray_default_construct(_M_data, _M_data + __n); }
 503
 504   template<typename _Tp>
 505     inline
 506     _Array<_Tp>::_Array(_Tp* const __restrict__ __p)
 507     : _M_data (__p) {}
 508
 509   template<typename _Tp>
 510     inline
 511     _Array<_Tp>::_Array(const valarray<_Tp>& __v)
 512     : _M_data (__v._M_data) {}
 513
 514   template<typename _Tp>
 515     inline
 516     _Array<_Tp>::_Array(const _Tp* __restrict__ __b, size_t __s)
 517     : _M_data(__valarray_get_storage<_Tp>(__s))
 518     { std::__valarray_copy_construct(__b, __s, _M_data); }
 519
 520   template<typename _Tp>
 521     inline _Tp*
 522     _Array<_Tp>::begin () const
 523     { return _M_data; }
 524
 525 #define _DEFINE_ARRAY_FUNCTION(_Op, _Name)                              \
 526   template<typename _Tp>                                                \
 527     inline void                                                         \
 528     _Array_augmented_##_Name(_Array<_Tp> __a, size_t __n, const _Tp& __t) \
 529     {                                                                   \
 530       for (_Tp* __p = __a._M_data; __p < __a._M_data + __n; ++__p)      \
 531         *__p _Op##= __t;                                                \
 532     }                                                                   \
 533                                                                         \
 534   template<typename _Tp>                                                \
 535     inline void                                                         \
 536     _Array_augmented_##_Name(_Array<_Tp> __a, size_t __n, _Array<_Tp> __b) \
 537     {                                                                   \
 538       _Tp* __p = __a._M_data;                                           \
 539       for (_Tp* __q = __b._M_data; __q < __b._M_data + __n; ++__p, ++__q) \
 540         *__p _Op##= *__q;                                               \
 541     }                                                                   \
 542                                                                         \
 543   template<typename _Tp, class _Dom>                                    \
 544     void                                                                \
 545     _Array_augmented_##_Name(_Array<_Tp> __a,                           \
 546                              const _Expr<_Dom, _Tp>& __e, size_t __n)   \
 547     {                                                                   \
 548       _Tp* __p(__a._M_data);                                            \
 549       for (size_t __i = 0; __i < __n; ++__i, ++__p)                     \
 550         *__p _Op##= __e[__i];                                           \
 551     }                                                                   \
 552                                                                         \
 553   template<typename _Tp>                                                \
 554     inline void                                                         \
 555     _Array_augmented_##_Name(_Array<_Tp> __a, size_t __n, size_t __s,   \
 556                              _Array<_Tp> __b)                           \
 557     {                                                                   \
 558       _Tp* __q(__b._M_data);                                            \
 559       for (_Tp* __p = __a._M_data; __p < __a._M_data + __s * __n;       \
 560            __p += __s, ++__q)                                           \
 561         *__p _Op##= *__q;                                               \
 562     }                                                                   \
 563                                                                         \
 564   template<typename _Tp>                                                \
 565     inline void                                                         \
 566     _Array_augmented_##_Name(_Array<_Tp> __a, _Array<_Tp> __b,          \
 567                              size_t __n, size_t __s)                    \
 568     {                                                                   \
 569       _Tp* __q(__b._M_data);                                            \
 570       for (_Tp* __p = __a._M_data; __p < __a._M_data + __n;             \
 571            ++__p, __q += __s)                                           \
 572         *__p _Op##= *__q;                                               \
 573     }                                                                   \
 574                                                                         \
 575   template<typename _Tp, class _Dom>                                    \
 576     void                                                                \
 577     _Array_augmented_##_Name(_Array<_Tp> __a, size_t __s,               \
 578                              const _Expr<_Dom, _Tp>& __e, size_t __n)   \
 579     {                                                                   \
 580       _Tp* __p(__a._M_data);                                            \
 581       for (size_t __i = 0; __i < __n; ++__i, __p += __s)                \
 582         *__p _Op##= __e[__i];                                           \
 583     }                                                                   \
 584                                                                         \
 585   template<typename _Tp>                                                \
 586     inline void                                                         \
 587     _Array_augmented_##_Name(_Array<_Tp> __a, _Array<size_t> __i,       \
 588                              _Array<_Tp> __b, size_t __n)               \
 589     {                                                                   \
 590       _Tp* __q(__b._M_data);                                            \
 591       for (size_t* __j = __i._M_data; __j < __i._M_data + __n;          \
 592            ++__j, ++__q)                                                \
 593         __a._M_data[*__j] _Op##= *__q;                                  \
 594     }                                                                   \
 595                                                                         \
 596   template<typename _Tp>                                                \
 597     inline void                                                         \
 598     _Array_augmented_##_Name(_Array<_Tp> __a, size_t __n,               \
 599                              _Array<_Tp> __b, _Array<size_t> __i)       \
 600     {                                                                   \
 601       _Tp* __p(__a._M_data);                                            \
 602       for (size_t* __j = __i._M_data; __j<__i._M_data + __n;            \
 603            ++__j, ++__p)                                                \
 604         *__p _Op##= __b._M_data[*__j];                                  \
 605     }                                                                   \
 606                                                                         \
 607   template<typename _Tp, class _Dom>                                    \
 608     void                                                                \
 609     _Array_augmented_##_Name(_Array<_Tp> __a, _Array<size_t> __i,       \
 610                              const _Expr<_Dom, _Tp>& __e, size_t __n)   \
 611     {                                                                   \
 612       size_t* __j(__i._M_data);                                         \
 613       for (size_t __k = 0; __k<__n; ++__k, ++__j)                       \
 614         __a._M_data[*__j] _Op##= __e[__k];                              \
 615     }                                                                   \
 616                                                                         \
 617   template<typename _Tp>                                                \
 618     void                                                                \
 619     _Array_augmented_##_Name(_Array<_Tp> __a, _Array<bool> __m,         \
 620                              _Array<_Tp> __b, size_t __n)               \
 621     {                                                                   \
 622       bool* __ok(__m._M_data);                                          \
 623       _Tp* __p(__a._M_data);                                            \
 624       for (_Tp* __q = __b._M_data; __q < __b._M_data + __n;             \
 625            ++__q, ++__ok, ++__p)                                        \
 626         {                                                               \
 627           while (! *__ok)                                               \
 628             {                                                           \
 629               ++__ok;                                                   \
 630               ++__p;                                                    \
 631             }                                                           \
 632           *__p _Op##= *__q;                                             \
 633         }                                                               \
 634     }                                                                   \
 635                                                                         \
 636   template<typename _Tp>                                                \
 637     void                                                                \
 638     _Array_augmented_##_Name(_Array<_Tp> __a, size_t __n,               \
 639                              _Array<_Tp> __b, _Array<bool> __m)         \
 640     {                                                                   \
 641       bool* __ok(__m._M_data);                                          \
 642       _Tp* __q(__b._M_data);                                            \
 643       for (_Tp* __p = __a._M_data; __p < __a._M_data + __n;             \
 644            ++__p, ++__ok, ++__q)                                        \
 645         {                                                               \
 646           while (! *__ok)                                               \
 647             {                                                           \
 648               ++__ok;                                                   \
 649               ++__q;                                                    \
 650             }                                                           \
 651           *__p _Op##= *__q;                                             \
 652         }                                                               \
 653     }                                                                   \
 654                                                                         \
 655   template<typename _Tp, class _Dom>                                    \
 656     void                                                                \
 657     _Array_augmented_##_Name(_Array<_Tp> __a, _Array<bool> __m,         \
 658                              const _Expr<_Dom, _Tp>& __e, size_t __n)   \
 659     {                                                                   \
 660       bool* __ok(__m._M_data);                                          \
 661       _Tp* __p(__a._M_data);                                            \
 662       for (size_t __i = 0; __i < __n; ++__i, ++__ok, ++__p)             \
 663         {                                                               \
 664           while (! *__ok)                                               \
 665             {                                                           \
 666               ++__ok;                                                   \
 667               ++__p;                                                    \
 668             }                                                           \
 669           *__p _Op##= __e[__i];                                         \
 670         }                                                               \
 671     }
 672
 673    _DEFINE_ARRAY_FUNCTION(+, __plus)
 674    _DEFINE_ARRAY_FUNCTION(-, __minus)
 675    _DEFINE_ARRAY_FUNCTION(*, __multiplies)
 676    _DEFINE_ARRAY_FUNCTION(/, __divides)
 677    _DEFINE_ARRAY_FUNCTION(%, __modulus)
 678    _DEFINE_ARRAY_FUNCTION(^, __bitwise_xor)
 679    _DEFINE_ARRAY_FUNCTION(|, __bitwise_or)
 680    _DEFINE_ARRAY_FUNCTION(&, __bitwise_and)
 681    _DEFINE_ARRAY_FUNCTION(<<, __shift_left)
 682    _DEFINE_ARRAY_FUNCTION(>>, __shift_right)
 683
 684 #undef _DEFINE_VALARRAY_FUNCTION
 685 } // namespace std
 686
 687 #ifndef _GLIBCXX_EXPORT_TEMPLATE
 688 # include <bits/valarray_array.tcc>
 689 #endif
 690
 691 #endif /* _ARRAY_H */