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Diffstat (limited to 'libstdc++/std/valarray_array.h')
| -rw-r--r-- | libstdc++/std/valarray_array.h | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/libstdc++/std/valarray_array.h b/libstdc++/std/valarray_array.h new file mode 100644 index 00000000000..f711e52a165 --- /dev/null +++ b/libstdc++/std/valarray_array.h @@ -0,0 +1,346 @@ +// 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: |