1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <valarray> 11 12 // template<class T> class valarray; 13 14 // valarray operator[](const valarray<bool>& vb) const; 15 16 #include <valarray> 17 #include <cassert> 18 19 int main() 20 { 21 int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}; 22 const std::size_t N1 = sizeof(a1)/sizeof(a1[0]); 23 bool b[N1] = {true, false, false, true, true, false, 24 false, true, false, false, false, true}; 25 std::valarray<int> v1(a1, N1); 26 std::valarray<bool> vb(b, N1); 27 std::valarray<int> v2(v1[vb]); 28 assert(v2.size() == 5); 29 assert(v2[ 0] == 0); 30 assert(v2[ 1] == 3); 31 assert(v2[ 2] == 4); 32 assert(v2[ 3] == 7); 33 assert(v2[ 4] == 11); 34 } 35
