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- // The template and inlines for the -*- C++ -*- internal _Array helper 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 __VALARRAY_ARRAY__
- #define __VALARRAY_ARRAY__
-
- #include <cstdlib>
- #include <cstring>
-
- extern "C++" {
-
- //
- // Helper functions on raw pointers
- //
-
- // fill plain array __a[<__n>] with __t
- template<typename _Tp>
- inline void
- __valarray_fill (_Tp* __restrict__ __a, size_t __n, const _Tp& __t)
- { while (__n--) *__a++ = __t; }
-
- // fill strided array __a[<__n-1 : __s>] with __t
- template<typename _Tp>
- inline void
- __valarray_fill (_Tp* __restrict__ __a, size_t __n,
- size_t __s, const _Tp& __t)
- { for (size_t __i=0; __i<__n; ++__i, __a+=__s) *__a = __t; }
-
- // fill indirect array __a[__i[<__n>]] with __i
- template<typename _Tp>
- inline void
- __valarray_fill(_Tp* __restrict__ __a, const size_t* __restrict__ __i,
- size_t __n, const _Tp& __t)
- { for (size_t __j=0; __j<__n; ++__j, ++__i) __a[*__i] = __t; }
-
- // copy plain array __a[<__n>] in __b[<__n>]
- template<typename _Tp>
- inline void
- __valarray_copy (const _Tp* __restrict__ __a, size_t __n,
- _Tp* __restrict__ __b)
- { memcpy (__b, __a, __n * sizeof(_Tp)); }
-
- // copy strided array __a[<__n : __s>] in plain __b[<__n>]
- template<typename _Tp>
- inline void
- __valarray_copy (const _Tp* __restrict__ __a, size_t __n, size_t __s,
- _Tp* __restrict__ __b)
- { for (size_t __i=0; __i<__n; ++__i, ++__b, __a += __s) *__b = *__a; }
-
- // copy plain __a[<__n>] in strided __b[<__n : __s>]
- template<typename _Tp>
- inline void
- __valarray_copy (const _Tp* __restrict__ __a, _Tp* __restrict__ __b,
- size_t __n, size_t __s)
- { for (size_t __i=0; __i<__n; ++__i, ++__a, __b+=__s) *__b = *__a; }
-
- // copy indexed __a[__i[<__n>]] in plain __b[<__n>]
- template<typename _Tp>
- inline void
- __valarray_copy (const _Tp* __restrict__ __a,
- const size_t* __restrict__ __i,
- _Tp* __restrict__ __b, size_t __n)
- { for (size_t __j=0; __j<__n; ++__j, ++__b, ++__i) *__b = __a[*__i]; }
-
- // copy plain __a[<__n>] in indexed __b[__i[<__n>]]
- template<typename _Tp>
- inline void
- __valarray_copy (const _Tp* __restrict__ __a, size_t __n,
- _Tp* __restrict__ __b, const size_t* __restrict__ __i)
- { for (size_t __j=0; __j<__n; ++__j, ++__a, ++__i) __b[*__i] = *__a; }
-
- //
- // Helper class _Array, first layer of valarray abstraction.
- // All operations on valarray should be forwarded to this class
- // whenever possible. -- gdr
- //
-
- template<typename _Tp> struct _Array {
-
- explicit _Array (size_t);
- explicit _Array (_Tp* const __restrict__);
- explicit _Array (const valarray<_Tp>&);
- _Array (const _Tp* __restrict__, size_t);
-
- void free_data() const;
- _Tp* begin () const;
-
- _Tp* const __restrict__ _M_data;
- };
-
- template<typename _Tp>
- inline void
- __valarray_fill (_Array<_Tp> __a, size_t __n, const _Tp& __t)
- { __valarray_fill (__a._M_data, __n, __t); }
-
- template<typename _Tp>
- inline void
- __valarray_fill (_Array<_Tp> __a, size_t __n, size_t __s, const _Tp& __t)
- { __valarray_fill (__a._M_data, __n, __s, __t); }
-
- template<typename _Tp>
- inline void
- __valarray_fill (_Array<_Tp> __a, _Array<size_t> __i,
- size_t __n, const _Tp& __t)
- { __valarray_fill (__a._M_data, __i._M_data, __n, __t); }
-
- template<typename _Tp>
- inline void
- __valarray_copy (_Array<_Tp> __a, size_t __n, _Array<_Tp> __b)
- { __valarray_copy (__a._M_data, __n, __b._M_data); }
-
- template<typename _Tp>
- inline void
- __valarray_copy (_Array<_Tp> __a, size_t __n, size_t __s, _Array<_Tp> __b)
- { __valarray_copy(__a._M_data, __n, __s, __b._M_data); }
-
- template<typename _Tp>
- inline void
- __valarray_copy (_Array<_Tp> __a, _Array<_Tp> __b, size_t __n, size_t __s)
- { __valarray_copy (__a._M_data, __b._M_data, __n, __s); }
-
- template<typename _Tp>
- inline void
- __valarray_copy (_Array<_Tp> __a, _Array<size_t> __i,
- _Array<_Tp> __b, size_t __n)
- { __valarray_copy (__a._M_data, __i._M_data, __b._M_data, __n); }
-
- template<typename _Tp>
- inline void
- __valarray_copy (_Array<_Tp> __a, size_t __n, _Array<_Tp> __b,
- _Array<size_t> __i)
- { __valarray_copy (__a._M_data, __n, __b._M_data, __i._M_data); }
-
- template<typename _Tp>
- inline
- _Array<_Tp>::_Array (size_t __n) : _M_data (new _Tp[__n]) {}
-
- template<typename _Tp>
- inline
- _Array<_Tp>::_Array (_Tp* const __restrict__ __p) : _M_data (__p) {}
-
- template<typename _Tp>
- inline _Array<_Tp>::_Array (const valarray<_Tp>& __v)
- : _M_data (__v._M_data) {}
-
- template<typename _Tp>
- inline
- _Array<_Tp>::_Array (const _Tp* __restrict__ __b, size_t __s)
- : _M_data (new _Tp[__s]) { __valarray_copy (__b, __s, _M_data); }
-
- template<typename _Tp>
- inline void
- _Array<_Tp>::free_data() const { delete[] _M_data; }
-
- template<typename _Tp>
- inline _Tp*
- _Array<_Tp>::begin () const
- { return _M_data; }
-
- #define _DEFINE_ARRAY_FUNCTION(_Op, _Name) \
- template<typename _Tp> \
- inline void \
- _Array_augmented_##_Name (_Array<_Tp> __a, size_t __n, const _Tp& __t) \
- { \
- for (_Tp* __p=__a._M_data; __p<__a._M_data+__n; ++__p) \
- *__p _Op##= __t; \
- } \
- \
- template<typename _Tp> \
- inline void \
- _Array_augmented_##_Name (_Array<_Tp> __a, size_t __n, _Array<_Tp> __b) \
- { \
- _Tp* __p (__a._M_data); \
- for (_Tp* __q=__b._M_data; __q<__b._M_data+__n; ++__p, ++__q) \
- *__p _Op##= *__q; \
- } \
- \
- template<typename _Tp, class _Dom> \
- void \
- _Array_augmented_##_Name (_Array<_Tp> __a, \
- const _Expr<_Dom,_Tp>& __e, size_t __n) \
- { \
- _Tp* __p (__a._M_data); \
- for (size_t __i=0; __i<__n; ++__i, ++__p) *__p _Op##= __e[__i]; \
- } \
- \
- template<typename _Tp> \
- inline void \
- _Array_augmented_##_Name (_Array<_Tp> __a, size_t __n, size_t __s, \
- _Array<_Tp> __b) \
- { \
- _Tp* __q (__b._M_data); \
- for (_Tp* __p=__a._M_data; __p<__a._M_data+__s*__n; __p+=__s, ++__q) \
- *__p _Op##= *__q; \
- } \
- \
- template<typename _Tp> \
- inline void \
- _Array_augmented_##_Name (_Array<_Tp> __a, _Array<_Tp> __b, \
- size_t __n, size_t __s) \
- { \
- _Tp* __q (__b._M_data); \
- for (_Tp* __p=__a._M_data; __p<__a._M_data+__n; ++__p, __q+=__s) \
- *__p _Op##= *__q; \
- } \
- \
- template<typename _Tp, class _Dom> \
- void \
- _Array_augmented_##_Name (_Array<_Tp> __a, size_t __s, \
- const _Expr<_Dom,_Tp>& __e, size_t __n) \
- { \
- _Tp* __p (__a._M_data); \
- for (size_t __i=0; __i<__n; ++__i, __p+=__s) *__p _Op##= __e[__i]; \
- } \
- \
- template<typename _Tp> \
- inline void \
- _Array_augmented_##_Name (_Array<_Tp> __a, _Array<size_t> __i, \
- _Array<_Tp> __b, size_t __n) \
- { \
- _Tp* __q (__b._M_data); \
- for (size_t* __j=__i._M_data; __j<__i._M_data+__n; ++__j, ++__q) \
- __a._M_data[*__j] _Op##= *__q; \
- } \
- \
- template<typename _Tp> \
- inline void \
- _Array_augmented_##_Name (_Array<_Tp> __a, size_t __n, \
- _Array<_Tp> __b, _Array<size_t> __i) \
- { \
- _Tp* __p (__a._M_data); \
- for (size_t* __j=__i._M_data; __j<__i._M_data+__n; ++__j, ++__p) \
- *__p _Op##= __b._M_data[*__j]; \
- } \
- \
- template<typename _Tp, class _Dom> \
- void \
- _Array_augmented_##_Name (_Array<_Tp> __a, _Array<size_t> __i, \
- const _Expr<_Dom, _Tp>& __e, size_t __n) \
- { \
- size_t* __j (__i._M_data); \
- for (size_t __k=0; __k<__n; ++__k, ++__j) \
- __a._M_data[*__j] _Op##= __e[__k]; \
- } \
- \
- template<typename _Tp> \
- void \
- _Array_augmented_##_Name (_Array<_Tp> __a, _Array<bool> __m, \
- _Array<_Tp> __b, size_t __n) \
- { \
- bool* ok (__m._M_data); \
- _Tp* __p (__a._M_data); \
- for (_Tp* __q=__b._M_data; __q<__b._M_data+__n; ++__q, ++ok, ++__p) { \
- while (! *ok) { \
- ++ok; \
- ++__p; \
- } \
- *__p _Op##= *__q; \
- } \
- } \
- \
- template<typename _Tp> \
- void \
- _Array_augmented_##_Name (_Array<_Tp> __a, size_t __n, \
- _Array<_Tp> __b, _Array<bool> __m) \
- { \
- bool* ok (__m._M_data); \
- _Tp* __q (__b._M_data); \
- for (_Tp* __p=__a._M_data; __p<__a._M_data+__n; ++__p, ++ok, ++__q) { \
- while (! *ok) { \
- ++ok; \
- ++__q; \
- } \
- *__p _Op##= *__q; \
- } \
- } \
- \
- template<typename _Tp, class _Dom> \
- void \
- _Array_augmented_##_Name (_Array<_Tp> __a, _Array<bool> __m, \
- const _Expr<_Dom, _Tp>& __e, size_t __n) \
- { \
- bool* ok(__m._M_data); \
- _Tp* __p (__a._M_data); \
- for (size_t __i=0; __i<__n; ++__i, ++ok, ++__p) { \
- while (! *ok) { \
- ++ok; \
- ++__p; \
- } \
- *__p _Op##= __e[__i]; \
- } \
- }
-
- _DEFINE_ARRAY_FUNCTION(+, plus)
- _DEFINE_ARRAY_FUNCTION(-, minus)
- _DEFINE_ARRAY_FUNCTION(*, multiplies)
- _DEFINE_ARRAY_FUNCTION(/, divides)
- _DEFINE_ARRAY_FUNCTION(%, modulus)
- _DEFINE_ARRAY_FUNCTION(^, xor)
- _DEFINE_ARRAY_FUNCTION(|, or)
- _DEFINE_ARRAY_FUNCTION(&, and)
- _DEFINE_ARRAY_FUNCTION(<<, shift_left)
- _DEFINE_ARRAY_FUNCTION(>>, shift_right)
-
- #undef _DEFINE_ARRAY_FUNCTION
-
- } // extern "C++"
-
- #ifdef _G_NO_VALARRAY_TEMPLATE_EXPORT
- # define export
- # include <std/valarray_array.tcc>
- #endif
-
- #endif // __VALARRAY_ARRAY__
-
- // Local Variables:
- // mode:c++
- // End:
-