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 mask_array 13 14 // void operator-=(const valarray<value_type>& v) 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 int a2[] = {1, 2, 3, 4, 5}; 24 const std::size_t N2 = sizeof(a2)/sizeof(a2[0]); 25 bool b[N1] = {true, false, false, true, true, false, 26 false, true, false, false, false, true}; 27 std::valarray<int> v1(a1, N1); 28 std::valarray<int> v2(a2, N2); 29 assert(N2 == std::count(b, b+N1, true)); 30 std::valarray<bool> vb(b, N1); 31 v1[vb] -= v2; 32 assert(v1.size() == 16); 33 assert(v1[ 0] == -1); 34 assert(v1[ 1] == 1); 35 assert(v1[ 2] == 2); 36 assert(v1[ 3] == 1); 37 assert(v1[ 4] == 1); 38 assert(v1[ 5] == 5); 39 assert(v1[ 6] == 6); 40 assert(v1[ 7] == 3); 41 assert(v1[ 8] == 8); 42 assert(v1[ 9] == 9); 43 assert(v1[10] == 10); 44 assert(v1[11] == 6); 45 assert(v1[12] == 12); 46 assert(v1[13] == 13); 47 assert(v1[14] == 14); 48 assert(v1[15] == 15); 49 } 50
