347 lines
11 KiB
C++
347 lines
11 KiB
C++
// The template and inlines for the -*- C++ -*- internal _Array helper class.
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// Copyright (C) 1997-1999 Cygnus Solutions
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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// Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>
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#ifndef __VALARRAY_ARRAY__
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#define __VALARRAY_ARRAY__
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#include <cstdlib>
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#include <cstring>
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extern "C++" {
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//
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// Helper functions on raw pointers
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//
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// fill plain array __a[<__n>] with __t
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template<typename _Tp>
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inline void
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__valarray_fill (_Tp* __restrict__ __a, size_t __n, const _Tp& __t)
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{ while (__n--) *__a++ = __t; }
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// fill strided array __a[<__n-1 : __s>] with __t
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template<typename _Tp>
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inline void
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__valarray_fill (_Tp* __restrict__ __a, size_t __n,
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size_t __s, const _Tp& __t)
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{ for (size_t __i=0; __i<__n; ++__i, __a+=__s) *__a = __t; }
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// fill indirect array __a[__i[<__n>]] with __i
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template<typename _Tp>
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inline void
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__valarray_fill(_Tp* __restrict__ __a, const size_t* __restrict__ __i,
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size_t __n, const _Tp& __t)
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{ for (size_t __j=0; __j<__n; ++__j, ++__i) __a[*__i] = __t; }
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// copy plain array __a[<__n>] in __b[<__n>]
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template<typename _Tp>
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inline void
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__valarray_copy (const _Tp* __restrict__ __a, size_t __n,
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_Tp* __restrict__ __b)
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{ memcpy (__b, __a, __n * sizeof(_Tp)); }
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// copy strided array __a[<__n : __s>] in plain __b[<__n>]
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template<typename _Tp>
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inline void
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__valarray_copy (const _Tp* __restrict__ __a, size_t __n, size_t __s,
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_Tp* __restrict__ __b)
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{ for (size_t __i=0; __i<__n; ++__i, ++__b, __a += __s) *__b = *__a; }
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// copy plain __a[<__n>] in strided __b[<__n : __s>]
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template<typename _Tp>
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inline void
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__valarray_copy (const _Tp* __restrict__ __a, _Tp* __restrict__ __b,
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size_t __n, size_t __s)
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{ for (size_t __i=0; __i<__n; ++__i, ++__a, __b+=__s) *__b = *__a; }
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// copy indexed __a[__i[<__n>]] in plain __b[<__n>]
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template<typename _Tp>
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inline void
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__valarray_copy (const _Tp* __restrict__ __a,
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const size_t* __restrict__ __i,
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_Tp* __restrict__ __b, size_t __n)
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{ for (size_t __j=0; __j<__n; ++__j, ++__b, ++__i) *__b = __a[*__i]; }
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// copy plain __a[<__n>] in indexed __b[__i[<__n>]]
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template<typename _Tp>
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inline void
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__valarray_copy (const _Tp* __restrict__ __a, size_t __n,
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_Tp* __restrict__ __b, const size_t* __restrict__ __i)
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{ for (size_t __j=0; __j<__n; ++__j, ++__a, ++__i) __b[*__i] = *__a; }
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//
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// Helper class _Array, first layer of valarray abstraction.
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// All operations on valarray should be forwarded to this class
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// whenever possible. -- gdr
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//
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template<typename _Tp> struct _Array {
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explicit _Array (size_t);
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explicit _Array (_Tp* const __restrict__);
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explicit _Array (const valarray<_Tp>&);
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_Array (const _Tp* __restrict__, size_t);
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void free_data() const;
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_Tp* begin () const;
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_Tp* const __restrict__ _M_data;
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};
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template<typename _Tp>
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inline void
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__valarray_fill (_Array<_Tp> __a, size_t __n, const _Tp& __t)
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{ __valarray_fill (__a._M_data, __n, __t); }
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template<typename _Tp>
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inline void
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__valarray_fill (_Array<_Tp> __a, size_t __n, size_t __s, const _Tp& __t)
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{ __valarray_fill (__a._M_data, __n, __s, __t); }
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template<typename _Tp>
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inline void
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__valarray_fill (_Array<_Tp> __a, _Array<size_t> __i,
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size_t __n, const _Tp& __t)
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{ __valarray_fill (__a._M_data, __i._M_data, __n, __t); }
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template<typename _Tp>
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inline void
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__valarray_copy (_Array<_Tp> __a, size_t __n, _Array<_Tp> __b)
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{ __valarray_copy (__a._M_data, __n, __b._M_data); }
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template<typename _Tp>
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inline void
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__valarray_copy (_Array<_Tp> __a, size_t __n, size_t __s, _Array<_Tp> __b)
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{ __valarray_copy(__a._M_data, __n, __s, __b._M_data); }
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template<typename _Tp>
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inline void
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__valarray_copy (_Array<_Tp> __a, _Array<_Tp> __b, size_t __n, size_t __s)
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{ __valarray_copy (__a._M_data, __b._M_data, __n, __s); }
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template<typename _Tp>
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inline void
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__valarray_copy (_Array<_Tp> __a, _Array<size_t> __i,
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_Array<_Tp> __b, size_t __n)
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{ __valarray_copy (__a._M_data, __i._M_data, __b._M_data, __n); }
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template<typename _Tp>
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inline void
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__valarray_copy (_Array<_Tp> __a, size_t __n, _Array<_Tp> __b,
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_Array<size_t> __i)
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{ __valarray_copy (__a._M_data, __n, __b._M_data, __i._M_data); }
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template<typename _Tp>
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inline
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_Array<_Tp>::_Array (size_t __n) : _M_data (new _Tp[__n]) {}
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template<typename _Tp>
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inline
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_Array<_Tp>::_Array (_Tp* const __restrict__ __p) : _M_data (__p) {}
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template<typename _Tp>
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inline _Array<_Tp>::_Array (const valarray<_Tp>& __v)
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: _M_data (__v._M_data) {}
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template<typename _Tp>
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inline
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_Array<_Tp>::_Array (const _Tp* __restrict__ __b, size_t __s)
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: _M_data (new _Tp[__s]) { __valarray_copy (__b, __s, _M_data); }
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template<typename _Tp>
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inline void
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_Array<_Tp>::free_data() const { delete[] _M_data; }
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template<typename _Tp>
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inline _Tp*
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_Array<_Tp>::begin () const
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{ return _M_data; }
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#define _DEFINE_ARRAY_FUNCTION(_Op, _Name) \
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template<typename _Tp> \
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inline void \
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_Array_augmented_##_Name (_Array<_Tp> __a, size_t __n, const _Tp& __t) \
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{ \
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for (_Tp* __p=__a._M_data; __p<__a._M_data+__n; ++__p) \
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*__p _Op##= __t; \
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} \
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\
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template<typename _Tp> \
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inline void \
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_Array_augmented_##_Name (_Array<_Tp> __a, size_t __n, _Array<_Tp> __b) \
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{ \
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_Tp* __p (__a._M_data); \
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for (_Tp* __q=__b._M_data; __q<__b._M_data+__n; ++__p, ++__q) \
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*__p _Op##= *__q; \
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} \
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\
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template<typename _Tp, class _Dom> \
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void \
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_Array_augmented_##_Name (_Array<_Tp> __a, \
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const _Expr<_Dom,_Tp>& __e, size_t __n) \
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{ \
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_Tp* __p (__a._M_data); \
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for (size_t __i=0; __i<__n; ++__i, ++__p) *__p _Op##= __e[__i]; \
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} \
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\
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template<typename _Tp> \
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inline void \
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_Array_augmented_##_Name (_Array<_Tp> __a, size_t __n, size_t __s, \
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_Array<_Tp> __b) \
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{ \
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_Tp* __q (__b._M_data); \
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for (_Tp* __p=__a._M_data; __p<__a._M_data+__s*__n; __p+=__s, ++__q) \
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*__p _Op##= *__q; \
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} \
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\
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template<typename _Tp> \
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inline void \
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_Array_augmented_##_Name (_Array<_Tp> __a, _Array<_Tp> __b, \
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size_t __n, size_t __s) \
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{ \
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_Tp* __q (__b._M_data); \
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for (_Tp* __p=__a._M_data; __p<__a._M_data+__n; ++__p, __q+=__s) \
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*__p _Op##= *__q; \
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} \
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\
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template<typename _Tp, class _Dom> \
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void \
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_Array_augmented_##_Name (_Array<_Tp> __a, size_t __s, \
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const _Expr<_Dom,_Tp>& __e, size_t __n) \
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{ \
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_Tp* __p (__a._M_data); \
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for (size_t __i=0; __i<__n; ++__i, __p+=__s) *__p _Op##= __e[__i]; \
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} \
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\
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template<typename _Tp> \
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inline void \
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_Array_augmented_##_Name (_Array<_Tp> __a, _Array<size_t> __i, \
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_Array<_Tp> __b, size_t __n) \
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{ \
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_Tp* __q (__b._M_data); \
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for (size_t* __j=__i._M_data; __j<__i._M_data+__n; ++__j, ++__q) \
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__a._M_data[*__j] _Op##= *__q; \
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} \
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\
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template<typename _Tp> \
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inline void \
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_Array_augmented_##_Name (_Array<_Tp> __a, size_t __n, \
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_Array<_Tp> __b, _Array<size_t> __i) \
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{ \
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_Tp* __p (__a._M_data); \
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for (size_t* __j=__i._M_data; __j<__i._M_data+__n; ++__j, ++__p) \
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*__p _Op##= __b._M_data[*__j]; \
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} \
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\
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template<typename _Tp, class _Dom> \
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void \
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_Array_augmented_##_Name (_Array<_Tp> __a, _Array<size_t> __i, \
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const _Expr<_Dom, _Tp>& __e, size_t __n) \
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{ \
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size_t* __j (__i._M_data); \
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for (size_t __k=0; __k<__n; ++__k, ++__j) \
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__a._M_data[*__j] _Op##= __e[__k]; \
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} \
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\
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template<typename _Tp> \
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void \
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_Array_augmented_##_Name (_Array<_Tp> __a, _Array<bool> __m, \
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_Array<_Tp> __b, size_t __n) \
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{ \
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bool* ok (__m._M_data); \
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_Tp* __p (__a._M_data); \
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for (_Tp* __q=__b._M_data; __q<__b._M_data+__n; ++__q, ++ok, ++__p) { \
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while (! *ok) { \
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++ok; \
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++__p; \
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} \
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*__p _Op##= *__q; \
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} \
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} \
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\
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template<typename _Tp> \
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void \
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_Array_augmented_##_Name (_Array<_Tp> __a, size_t __n, \
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_Array<_Tp> __b, _Array<bool> __m) \
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{ \
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bool* ok (__m._M_data); \
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_Tp* __q (__b._M_data); \
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for (_Tp* __p=__a._M_data; __p<__a._M_data+__n; ++__p, ++ok, ++__q) { \
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while (! *ok) { \
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++ok; \
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++__q; \
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} \
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*__p _Op##= *__q; \
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} \
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} \
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\
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template<typename _Tp, class _Dom> \
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void \
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_Array_augmented_##_Name (_Array<_Tp> __a, _Array<bool> __m, \
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const _Expr<_Dom, _Tp>& __e, size_t __n) \
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{ \
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bool* ok(__m._M_data); \
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_Tp* __p (__a._M_data); \
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for (size_t __i=0; __i<__n; ++__i, ++ok, ++__p) { \
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while (! *ok) { \
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++ok; \
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++__p; \
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} \
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*__p _Op##= __e[__i]; \
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} \
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}
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_DEFINE_ARRAY_FUNCTION(+, plus)
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_DEFINE_ARRAY_FUNCTION(-, minus)
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_DEFINE_ARRAY_FUNCTION(*, multiplies)
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_DEFINE_ARRAY_FUNCTION(/, divides)
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_DEFINE_ARRAY_FUNCTION(%, modulus)
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_DEFINE_ARRAY_FUNCTION(^, xor)
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_DEFINE_ARRAY_FUNCTION(|, or)
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_DEFINE_ARRAY_FUNCTION(&, and)
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_DEFINE_ARRAY_FUNCTION(<<, shift_left)
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_DEFINE_ARRAY_FUNCTION(>>, shift_right)
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#undef _DEFINE_ARRAY_FUNCTION
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} // extern "C++"
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#ifdef _G_NO_VALARRAY_TEMPLATE_EXPORT
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# define export
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# include <std/valarray_array.tcc>
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#endif
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#endif // __VALARRAY_ARRAY__
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// Local Variables:
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// mode:c++
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// End:
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