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245 lines
7.1 KiB
C++
245 lines
7.1 KiB
C++
// The template and inlines for the -*- C++ -*- internal _Array helper class.
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// Copyright (C) 1997-2020 Free Software Foundation, Inc.
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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 3, 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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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file bits/valarray_array.tcc
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* This is an internal header file, included by other library headers.
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* Do not attempt to use it directly. @headername{valarray}
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*/
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// Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>
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#ifndef _VALARRAY_ARRAY_TCC
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#define _VALARRAY_ARRAY_TCC 1
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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template<typename _Tp>
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void
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__valarray_fill(_Array<_Tp> __a, size_t __n, _Array<bool> __m,
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const _Tp& __t)
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{
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_Tp* __p = __a._M_data;
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bool* __ok (__m._M_data);
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for (size_t __i=0; __i < __n; ++__i, ++__ok, ++__p)
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{
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while (!*__ok)
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{
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++__ok;
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++__p;
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}
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*__p = __t;
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}
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}
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// Copy n elements of a into consecutive elements of b. When m is
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// false, the corresponding element of a is skipped. m must contain
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// at least n true elements. a must contain at least n elements and
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// enough elements to match up with m through the nth true element
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// of m. I.e. if n is 10, m has 15 elements with 5 false followed
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// by 10 true, a must have 15 elements.
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template<typename _Tp>
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void
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__valarray_copy(_Array<_Tp> __a, _Array<bool> __m, _Array<_Tp> __b,
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size_t __n)
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{
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_Tp* __p (__a._M_data);
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bool* __ok (__m._M_data);
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for (_Tp* __q = __b._M_data; __q < __b._M_data + __n;
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++__q, ++__ok, ++__p)
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{
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while (! *__ok)
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{
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++__ok;
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++__p;
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}
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*__q = *__p;
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}
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}
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// Copy n consecutive elements from a into elements of b. Elements
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// of b are skipped if the corresponding element of m is false. m
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// must contain at least n true elements. b must have at least as
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// many elements as the index of the nth true element of m. I.e. if
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// m has 15 elements with 5 false followed by 10 true, b must have
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// at least 15 elements.
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template<typename _Tp>
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void
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__valarray_copy(_Array<_Tp> __a, size_t __n, _Array<_Tp> __b,
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_Array<bool> __m)
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{
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_Tp* __q (__b._M_data);
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bool* __ok (__m._M_data);
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for (_Tp* __p = __a._M_data; __p < __a._M_data+__n;
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++__p, ++__ok, ++__q)
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{
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while (! *__ok)
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{
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++__ok;
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++__q;
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}
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*__q = *__p;
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}
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}
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// Copy n elements from a into elements of b. Elements of a are
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// skipped if the corresponding element of m is false. Elements of
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// b are skipped if the corresponding element of k is false. m and
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// k must contain at least n true elements. a and b must have at
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// least as many elements as the index of the nth true element of m.
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template<typename _Tp>
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void
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__valarray_copy(_Array<_Tp> __a, _Array<bool> __m, size_t __n,
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_Array<_Tp> __b, _Array<bool> __k)
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{
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_Tp* __p (__a._M_data);
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_Tp* __q (__b._M_data);
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bool* __srcok (__m._M_data);
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bool* __dstok (__k._M_data);
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for (size_t __i = 0; __i < __n;
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++__srcok, ++__p, ++__dstok, ++__q, ++__i)
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{
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while (! *__srcok)
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{
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++__srcok;
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++__p;
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}
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while (! *__dstok)
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{
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++__dstok;
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++__q;
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}
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*__q = *__p;
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}
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}
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// Copy n consecutive elements of e into consecutive elements of a.
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// I.e. a[i] = e[i].
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template<typename _Tp, class _Dom>
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void
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__valarray_copy(const _Expr<_Dom, _Tp>& __e, size_t __n, _Array<_Tp> __a)
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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)
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*__p = __e[__i];
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}
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// Copy n consecutive elements of e into elements of a using stride
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// s. I.e., a[0] = e[0], a[s] = e[1], a[2*s] = e[2].
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template<typename _Tp, class _Dom>
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void
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__valarray_copy(const _Expr<_Dom, _Tp>& __e, size_t __n,
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_Array<_Tp> __a, size_t __s)
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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)
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*__p = __e[__i];
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}
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// Copy n consecutive elements of e into elements of a indexed by
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// contents of i. I.e., a[i[0]] = e[0].
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template<typename _Tp, class _Dom>
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void
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__valarray_copy(const _Expr<_Dom, _Tp>& __e, size_t __n,
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_Array<_Tp> __a, _Array<size_t> __i)
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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] = __e[__k];
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}
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// Copy n elements of e indexed by contents of f into elements of a
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// indexed by contents of i. I.e., a[i[0]] = e[f[0]].
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template<typename _Tp>
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void
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__valarray_copy(_Array<_Tp> __e, _Array<size_t> __f,
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size_t __n,
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_Array<_Tp> __a, _Array<size_t> __i)
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{
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size_t* __g (__f._M_data);
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size_t* __j (__i._M_data);
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for (size_t __k = 0; __k < __n; ++__k, ++__j, ++__g)
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__a._M_data[*__j] = __e._M_data[*__g];
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}
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// Copy n consecutive elements of e into elements of a. Elements of
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// a are skipped if the corresponding element of m is false. m must
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// have at least n true elements and a must have at least as many
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// elements as the index of the nth true element of m. I.e. if m
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// has 5 false followed by 10 true elements and n == 10, a must have
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// at least 15 elements.
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template<typename _Tp, class _Dom>
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void
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__valarray_copy(const _Expr<_Dom, _Tp>& __e, size_t __n,
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_Array<_Tp> __a, _Array<bool> __m)
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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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{
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while (! *__ok)
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{
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++__ok;
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++__p;
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}
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*__p = __e[__i];
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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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__valarray_copy_construct(const _Expr<_Dom, _Tp>& __e, size_t __n,
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_Array<_Tp> __a)
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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)
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new (__p) _Tp(__e[__i]);
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}
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template<typename _Tp>
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void
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__valarray_copy_construct(_Array<_Tp> __a, _Array<bool> __m,
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_Array<_Tp> __b, size_t __n)
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{
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_Tp* __p (__a._M_data);
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bool* __ok (__m._M_data);
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for (_Tp* __q = __b._M_data; __q < __b._M_data+__n; ++__q, ++__ok, ++__p)
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{
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while (! *__ok)
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{
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++__ok;
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++__p;
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}
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new (__q) _Tp(*__p);
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}
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}
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_GLIBCXX_END_NAMESPACE_VERSION
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} // namespace
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#endif /* _VALARRAY_ARRAY_TCC */
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