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50 lines
1.4 KiB
C++
50 lines
1.4 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 mask_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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int main()
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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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const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
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int a2[] = {1, 2, 3, 4, 5};
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const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
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bool b[N1] = {true, false, false, true, true, false,
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false, true, false, false, false, true};
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std::valarray<int> v1(a1, N1);
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std::valarray<int> v2(a2, N2);
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assert(N2 == std::count(b, b+N1, true));
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std::valarray<bool> vb(b, N1);
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v1[vb] <<= 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] == 12);
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assert(v1[ 4] == 32);
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assert(v1[ 5] == 5);
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assert(v1[ 6] == 6);
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assert(v1[ 7] == 112);
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assert(v1[ 8] == 8);
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assert(v1[ 9] == 9);
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assert(v1[10] == 10);
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assert(v1[11] == 352);
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assert(v1[12] == 12);
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assert(v1[13] == 13);
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assert(v1[14] == 14);
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assert(v1[15] == 15);
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}
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