f5256e16df
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103516 91177308-0d34-0410-b5e6-96231b3b80d8
78 lines
2.3 KiB
C++
78 lines
2.3 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 distributed under the University of Illinois Open Source
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// License. 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 indirect_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,
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12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
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24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
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36, 37, 38, 39, 40};
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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, 6, 7, 8, 9, 10, 11, 12,
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13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24};
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const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
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std::size_t s[N2] = { 3, 4, 5, 7, 8, 9, 11, 12, 13, 15, 16, 17,
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22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
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std::valarray<int> v1(a1, N1);
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std::valarray<int> v2(a2, N2);
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std::valarray<std::size_t> ia(s, N2);
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v1[ia] *= v2;
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assert(v1.size() == 41);
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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] == 8);
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assert(v1[ 5] == 15);
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assert(v1[ 6] == 6);
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assert(v1[ 7] == 28);
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assert(v1[ 8] == 40);
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assert(v1[ 9] == 54);
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assert(v1[10] == 10);
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assert(v1[11] == 77);
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assert(v1[12] == 96);
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assert(v1[13] == 117);
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assert(v1[14] == 14);
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assert(v1[15] == 150);
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assert(v1[16] == 176);
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assert(v1[17] == 204);
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assert(v1[18] == 18);
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assert(v1[19] == 19);
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assert(v1[20] == 20);
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assert(v1[21] == 21);
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assert(v1[22] == 286);
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assert(v1[23] == 322);
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assert(v1[24] == 360);
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assert(v1[25] == 25);
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assert(v1[26] == 416);
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assert(v1[27] == 459);
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assert(v1[28] == 504);
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assert(v1[29] == 29);
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assert(v1[30] == 570);
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assert(v1[31] == 620);
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assert(v1[32] == 672);
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assert(v1[33] == 33);
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assert(v1[34] == 748);
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assert(v1[35] == 805);
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assert(v1[36] == 864);
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assert(v1[37] == 37);
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assert(v1[38] == 38);
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assert(v1[39] == 39);
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assert(v1[40] == 40);
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}
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