forked from OSchip/llvm-project
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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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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// const slice_array& operator=(const slice_array& sa) const;
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#include <valarray>
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#include <cassert>
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int main()
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{
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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, -6, -7, -8, -9, -10, -11, -12};
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std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
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const std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
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v1[std::slice(1, 5, 3)] = v2[std::slice(2, 5, 2)];
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assert(v1.size() == 16);
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assert(v1[ 0] == 0);
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assert(v1[ 1] == -3);
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assert(v1[ 2] == 2);
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assert(v1[ 3] == 3);
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assert(v1[ 4] == -5);
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assert(v1[ 5] == 5);
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assert(v1[ 6] == 6);
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assert(v1[ 7] == -7);
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assert(v1[ 8] == 8);
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assert(v1[ 9] == 9);
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assert(v1[10] == -9);
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assert(v1[11] == 11);
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assert(v1[12] == 12);
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assert(v1[13] == -11);
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assert(v1[14] == 14);
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assert(v1[15] == 15);
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}
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// Test return value of assignment.
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{
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int a1[] = {0, 1, 2};
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std::valarray<int> v1(a1, 3);
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std::slice_array<int> s1 = v1[std::slice(1, 1, 1)];
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std::slice_array<int> s2 = v1[std::slice(0, 1, 1)];
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std::slice_array<int> const & s3 = (s1 = s2);
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assert(&s1 == &s3);
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}
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}
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