valarray_array.tcc
Go to the documentation of this file.
// The template and inlines for the -*- C++ -*- internal _Array helper class.
// Copyright (C) 1997-2013 Free Software Foundation, Inc.
//
// 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 3, 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.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file bits/valarray_array.tcc
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @headername{valarray}
*/
// Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>
#ifndef _VALARRAY_ARRAY_TCC
#define _VALARRAY_ARRAY_TCC 1
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename _Tp>
void
__valarray_fill(_Array<_Tp> __a, size_t __n, _Array<bool> __m,
const _Tp& __t)
{
_Tp* __p = __a._M_data;
bool* __ok (__m._M_data);
for (size_t __i=0; __i < __n; ++__i, ++__ok, ++__p)
{
while (!*__ok)
{
++__ok;
++__p;
}
*__p = __t;
}
}
// Copy n elements of a into consecutive elements of b. When m is
// false, the corresponding element of a is skipped. m must contain
// at least n true elements. a must contain at least n elements and
// enough elements to match up with m through the nth true element
// of m. I.e. if n is 10, m has 15 elements with 5 false followed
// by 10 true, a must have 15 elements.
template<typename _Tp>
void
__valarray_copy(_Array<_Tp> __a, _Array<bool> __m, _Array<_Tp> __b,
size_t __n)
{
_Tp* __p (__a._M_data);
bool* __ok (__m._M_data);
for (_Tp* __q = __b._M_data; __q < __b._M_data + __n;
++__q, ++__ok, ++__p)
{
while (! *__ok)
{
++__ok;
++__p;
}
*__q = *__p;
}
}
// Copy n consecutive elements from a into elements of b. Elements
// of b are skipped if the corresponding element of m is false. m
// must contain at least n true elements. b must have at least as
// many elements as the index of the nth true element of m. I.e. if
// m has 15 elements with 5 false followed by 10 true, b must have
// at least 15 elements.
template<typename _Tp>
void
__valarray_copy(_Array<_Tp> __a, size_t __n, _Array<_Tp> __b,
_Array<bool> __m)
{
_Tp* __q (__b._M_data);
bool* __ok (__m._M_data);
for (_Tp* __p = __a._M_data; __p < __a._M_data+__n;
++__p, ++__ok, ++__q)
{
while (! *__ok)
{
++__ok;
++__q;
}
*__q = *__p;
}
}
// Copy n elements from a into elements of b. Elements of a are
// skipped if the corresponding element of m is false. Elements of
// b are skipped if the corresponding element of k is false. m and
// k must contain at least n true elements. a and b must have at
// least as many elements as the index of the nth true element of m.
template<typename _Tp>
void
__valarray_copy(_Array<_Tp> __a, _Array<bool> __m, size_t __n,
_Array<_Tp> __b, _Array<bool> __k)
{
_Tp* __p (__a._M_data);
_Tp* __q (__b._M_data);
bool* __srcok (__m._M_data);
bool* __dstok (__k._M_data);
for (size_t __i = 0; __i < __n;
++__srcok, ++__p, ++__dstok, ++__q, ++__i)
{
while (! *__srcok)
{
++__srcok;
++__p;
}
while (! *__dstok)
{
++__dstok;
++__q;
}
*__q = *__p;
}
}
// Copy n consecutive elements of e into consecutive elements of a.
// I.e. a[i] = e[i].
template<typename _Tp, class _Dom>
void
__valarray_copy(const _Expr<_Dom, _Tp>& __e, size_t __n, _Array<_Tp> __a)
{
_Tp* __p (__a._M_data);
for (size_t __i = 0; __i < __n; ++__i, ++__p)
*__p = __e[__i];
}
// Copy n consecutive elements of e into elements of a using stride
// s. I.e., a[0] = e[0], a[s] = e[1], a[2*s] = e[2].
template<typename _Tp, class _Dom>
void
__valarray_copy(const _Expr<_Dom, _Tp>& __e, size_t __n,
_Array<_Tp> __a, size_t __s)
{
_Tp* __p (__a._M_data);
for (size_t __i = 0; __i < __n; ++__i, __p += __s)
*__p = __e[__i];
}
// Copy n consecutive elements of e into elements of a indexed by
// contents of i. I.e., a[i[0]] = e[0].
template<typename _Tp, class _Dom>
void
__valarray_copy(const _Expr<_Dom, _Tp>& __e, size_t __n,
_Array<_Tp> __a, _Array<size_t> __i)
{
size_t* __j (__i._M_data);
for (size_t __k = 0; __k < __n; ++__k, ++__j)
__a._M_data[*__j] = __e[__k];
}
// Copy n elements of e indexed by contents of f into elements of a
// indexed by contents of i. I.e., a[i[0]] = e[f[0]].
template<typename _Tp>
void
__valarray_copy(_Array<_Tp> __e, _Array<size_t> __f,
size_t __n,
_Array<_Tp> __a, _Array<size_t> __i)
{
size_t* __g (__f._M_data);
size_t* __j (__i._M_data);
for (size_t __k = 0; __k < __n; ++__k, ++__j, ++__g)
__a._M_data[*__j] = __e._M_data[*__g];
}
// Copy n consecutive elements of e into elements of a. Elements of
// a are skipped if the corresponding element of m is false. m must
// have at least n true elements and a must have at least as many
// elements as the index of the nth true element of m. I.e. if m
// has 5 false followed by 10 true elements and n == 10, a must have
// at least 15 elements.
template<typename _Tp, class _Dom>
void
__valarray_copy(const _Expr<_Dom, _Tp>& __e, size_t __n,
_Array<_Tp> __a, _Array<bool> __m)
{
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 = __e[__i];
}
}
template<typename _Tp, class _Dom>
void
__valarray_copy_construct(const _Expr<_Dom, _Tp>& __e, size_t __n,
_Array<_Tp> __a)
{
_Tp* __p (__a._M_data);
for (size_t __i = 0; __i < __n; ++__i, ++__p)
new (__p) _Tp(__e[__i]);
}
template<typename _Tp>
void
__valarray_copy_construct(_Array<_Tp> __a, _Array<bool> __m,
_Array<_Tp> __b, size_t __n)
{
_Tp* __p (__a._M_data);
bool* __ok (__m._M_data);
for (_Tp* __q = __b._M_data; __q < __b._M_data+__n; ++__q, ++__ok, ++__p)
{
while (! *__ok)
{
++__ok;
++__p;
}
new (__q) _Tp(*__p);
}
}
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
#endif /* _VALARRAY_ARRAY_TCC */