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
20int main()
21{
22    {
23        typedef int T;
24        T a1[] = {1,  2,  3,  4,  5};
25        T a2[] = {4,  5,  6,  7,  8};
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