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 // <complex>
11 
12 // complex& operator-=(const complex& rhs);
13 
14 #include <complex>
15 #include <cassert>
16 
17 template <class T>
18 void
test()19 test()
20 {
21     std::complex<T> c;
22     const std::complex<T> c2(1.5, 2.5);
23     assert(c.real() == 0);
24     assert(c.imag() == 0);
25     c -= c2;
26     assert(c.real() == -1.5);
27     assert(c.imag() == -2.5);
28     c -= c2;
29     assert(c.real() == -3);
30     assert(c.imag() == -5);
31 
32     std::complex<T> c3;
33 
34     c3 = c;
35     std::complex<int> ic (1,1);
36     c3 -= ic;
37     assert(c3.real() == -4);
38     assert(c3.imag() == -6);
39 
40     c3 = c;
41     std::complex<float> fc (1,1);
42     c3 -= fc;
43     assert(c3.real() == -4);
44     assert(c3.imag() == -6);
45 }
46 
main()47 int main()
48 {
49     test<float>();
50     test<double>();
51     test<long double>();
52 }
53