79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
// 2004-01-03 Jerry Quinn <jlquinn@optonline.net>
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// Copyright (C) 2004-2016 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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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// PR 3247
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// This is DR-253. Test for accessible assignment-operators.
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#include <valarray>
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#include <testsuite_hooks.h>
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bool check_array(std::valarray<double>& a, double b[])
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{
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for (unsigned int i=0; i < a.size(); i++)
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if (a[i] != b[i]) return false;
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return true;
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}
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int main()
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{
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std::valarray<double> val_d(10); // 0 1 2 3 4 5 6 7 8 9
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std::valarray<double> val_d1(10); // 10 9 8 7 6 5 4 3 2 1
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for (int i=0; i< 10; i++) { val_d[i] = 10; val_d1[i] = i; }
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std::valarray<double> val_c(val_d);
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std::valarray<double> val_f(val_d);
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std::valarray<double> val_g(val_d);
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std::slice slc(1, 3, 3); // 1 4 7
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val_d[slc] = val_d1[slc];
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double ans1[10] = {10, 1, 10, 10, 4, 10, 10, 7, 10, 10};
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VERIFY(check_array(val_d, ans1));
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std::valarray<std::size_t> val_size(2);
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std::valarray<std::size_t> val_stride(2);
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val_size[0] = 2; val_size[1] = 3;
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val_stride[0] = 4; val_stride[1] = 1;
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std::gslice gslc(1, val_size, val_stride);
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val_c[gslc] = val_d1[gslc];
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double ans2[10] = {10, 1, 2, 3, 10, 5, 6, 7, 10, 10};
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VERIFY(check_array(val_c, ans2));
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std::valarray<bool> val_b(false, 10);
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val_b[2] = val_b[6] = val_b[9] = true;
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val_f[val_b] = val_d1[val_b];
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double ans3[10] = {10, 10, 2, 10, 10, 10, 6, 10, 10, 9};
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VERIFY(check_array(val_f, ans3));
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size_t addr[] = {1, 2, 3, 4, 5};
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size_t addr1[] = {2, 7, 1, 9, 4};
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std::valarray<std::size_t> val_indirect(addr, 5);
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std::valarray<std::size_t> val_indirect1(addr1, 5);
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val_g[val_indirect] = val_d1[val_indirect1];
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double ans4[10] = {10, 2, 7, 1, 9, 4, 10, 10, 10, 10};
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VERIFY(check_array(val_g, ans4));
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return 0;
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}
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