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76 lines
1.6 KiB
C++
76 lines
1.6 KiB
C++
// Copyright (C) 2018-2019 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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#include <valarray>
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#include <testsuite_hooks.h>
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void
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test01()
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{
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// PR libstdc++/87641
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std::valarray<int> v1(3);
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v1[0] = 1;
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v1[1] = 2;
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v1[2] = 3;
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std::valarray< std::valarray<int> > v2(v1, 3);
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std::valarray<int> v3 = v2.sum();
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VERIFY( v3.size() == v1.size() );
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VERIFY( v3[0] == 3 );
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VERIFY( v3[1] == 6 );
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VERIFY( v3[2] == 9 );
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}
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struct X
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{
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X() : val(1) { }
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X& operator+=(const X& x) { val += x.val; return *this; }
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bool operator==(const X& x) { return val == x.val; }
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int val;
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};
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void
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test02()
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{
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std::valarray<X> v1(1);
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VERIFY( v1.sum() == v1[0] );
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std::valarray<X> v2(2);
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VERIFY( v2.sum().val == 2 );
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}
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struct Y
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{
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X& operator+=(const Y&) { throw 1; }
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};
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void
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test03()
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{
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std::valarray<Y> v1(1);
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(void) v1.sum(); // no addition performed for a single element
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}
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int
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main()
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{
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test01();
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test02();
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test03();
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}
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