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1 // Copyright (C) 2020 Free Software Foundation, Inc.
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2 //
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3 // This file is part of the GNU ISO C++ Library. This library is free
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4 // software; you can redistribute it and/or modify it under the
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5 // terms of the GNU General Public License as published by the
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6 // Free Software Foundation; either version 3, or (at your option)
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7 // any later version.
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8
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9 // This library is distributed in the hope that it will be useful,
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10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 // GNU General Public License for more details.
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13
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14 // You should have received a copy of the GNU General Public License along
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15 // with this library; see the file COPYING3. If not see
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16 // <http://www.gnu.org/licenses/>.
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17
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18 // { dg-options "-std=gnu++2a" }
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19 // { dg-do compile { target c++2a } }
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20
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21 #include <functional>
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22 #include <numeric>
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23
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24 constexpr bool
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25 test01()
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26 {
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27 int x[3] = {1,2,3};
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28 int y[3];
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29 std::transform_inclusive_scan(x, x+3, y, std::plus{}, std::negate{}, 0);
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30 return y[0] == -1 && y[1] == -3 && y[2] == -6;
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31 }
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32
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33 static_assert(test01());
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34
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35 constexpr bool
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36 test02()
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37 {
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38 int x[3] = {1,2,3};
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39 int y[3];
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40 std::transform_inclusive_scan(x, x+3, y, std::plus{}, std::negate{});
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41 return y[0] == -1 && y[1] == -3 && y[2] == -6;
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42 }
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43
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44 static_assert(test02());
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