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 value_type& x); 15 16 #include <valarray> 17 #include <cassert> 18 #include <cstddef> 19 main()20 int main() 21 { 22 { 23 typedef int T; 24 T a1[] = { 1, 2, 3, 4, 5}; 25 T a2[] = {-2, -1, 0, 1, 2}; 26 const unsigned N = sizeof(a1)/sizeof(a1[0]); 27 std::valarray<T> v1(a1, N); 28 std::valarray<T> v2(a2, N); 29 v1 -= 3; 30 assert(v1.size() == v2.size()); 31 for (std::size_t i = 0; i < v1.size(); ++i) 32 assert(v1[i] == v2[i]); 33 } 34 } 35