62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <valarray>
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// template <class T> class slice_array
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// void operator=(const valarray<value_type>& v) const;
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#include <valarray>
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#include <cassert>
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#include "test_macros.h"
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int main(int, char**)
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{
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int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
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int a2[] = {-1, -2, -3, -4, -5};
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std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
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std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
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std::slice_array<int> s1 = v1[std::slice(1, 5, 3)];
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s1 = v2;
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assert(v1.size() == 16);
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assert(v1[ 0] == 0);
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assert(v1[ 1] == -1);
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assert(v1[ 2] == 2);
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assert(v1[ 3] == 3);
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assert(v1[ 4] == -2);
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assert(v1[ 5] == 5);
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assert(v1[ 6] == 6);
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assert(v1[ 7] == -3);
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assert(v1[ 8] == 8);
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assert(v1[ 9] == 9);
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assert(v1[10] == -4);
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assert(v1[11] == 11);
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assert(v1[12] == 12);
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assert(v1[13] == -5);
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assert(v1[14] == 14);
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assert(v1[15] == 15);
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ASSERT_SAME_TYPE(decltype(s1 = v2), void);
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// The initializer list constructor is disabled in C++03 mode.
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#if TEST_STD_VER > 03
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std::valarray<double> m = { 0, 0, 0 };
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std::slice_array<double> s2 = m[std::slice(0, 3, 1)];
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s2 = { 1, 2, 3 };
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assert(m[0] == 1);
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assert(m[1] == 2);
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assert(m[2] == 3);
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ASSERT_SAME_TYPE(decltype(s2 = {1, 2, 3}), void);
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#endif // TEST_STD_VER > 03
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return 0;
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}
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