1 // Copyright (C) 2003, 2009 Free Software Foundation, Inc.
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
20 #include <testsuite_performance.h>
22 // based on libstdc++/5730, use --fast-math
26 using namespace __gnu_test;
29 resource_counter resource;
30 const int iterations = 2000;
32 typedef complex<double> complex_type;
35 for (int i = 0; i < 2048; ++i)
38 start_counters(time, resource);
39 for (int i = 0; i < iterations; ++i)
42 for (int j = 0; j < 2048; ++j)
46 *p *= complex_type(cos(t), sin(t));
50 stop_counters(time, resource);
51 report_performance(__FILE__, "norm", time, resource);
52 clear_counters(time, resource);
54 start_counters(time, resource);
55 for (int i = 0; i < iterations; ++i)
58 for (int j = 0; j < 2048; ++j)
60 // Shouldn't be slower than the above.
63 double u2 = ur * ur + ui * ui;
65 *p *= complex_type(cos(t), sin(t));
69 stop_counters(time, resource);
70 report_performance(__FILE__, "", time, resource);