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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:
|
