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      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 T& rhs);
     13 
     14 #include <complex>
     15 #include <cassert>
     16 
     17 template <class T>
     18 void
     19 test()
     20 {
     21     std::complex<T> c;
     22     assert(c.real() == 0);
     23     assert(c.imag() == 0);
     24     c -= 1.5;
     25     assert(c.real() == -1.5);
     26     assert(c.imag() == 0);
     27     c -= 1.5;
     28     assert(c.real() == -3);
     29     assert(c.imag() == 0);
     30     c -= -1.5;
     31     assert(c.real() == -1.5);
     32     assert(c.imag() == 0);
     33 }
     34 
     35 int main()
     36 {
     37     test<float>();
     38     test<double>();
     39     test<long double>();
     40 }
     41