abs_valarray.pass.cpp revision 06086258d3d8c48a916ec51c33e1ad8f46821b81 
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// template<class T>
15//   valarray<T>
16//   abs(const valarray<T>& x);
17
18#include <valarray>
19#include <cassert>
20
21int main()
22{
23    {
24        typedef double T;
25        T a1[] = {1.5,  -2.5,  3.4,  -4.5,  -5.0};
26        T a3[] = {1.5,   2.5,  3.4,   4.5,   5.0};
27        const unsigned N = sizeof(a1)/sizeof(a1[0]);
28        std::valarray<T> v1(a1, N);
29        std::valarray<T> v3 = abs(v1);
30        assert(v3.size() == v1.size());
31        for (int i = 0; i < v3.size(); ++i)
32            assert(v3[i] == a3[i]);
33    }
34}
35