1// Copyright (C) 2003 Free Software Foundation, Inc.
2//
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 2, or (at your option)
7// any later version.
8
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.
13
14// You should have received a copy of the GNU General Public License along
15// with this library; see the file COPYING.  If not, write to the Free
16// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
17// USA.
18
19// As a special exception, you may use this file as part of a free software
20// library without restriction.  Specifically, if other files instantiate
21// templates or use macros or inline functions from this file, or you compile
22// this file and link it with other files to produce an executable, this
23// file does not by itself cause the resulting executable to be covered by
24// the GNU General Public License.  This exception does not however
25// invalidate any other reasons why the executable file might be covered by
26// the GNU General Public License.
27
28#include <fstream>
29#include <sstream>
30#include <testsuite_performance.h>
31
32// Based on libstdc++/8761 poor fstream performance (converted to float)
33void test_insertion(int p = 6)
34{
35  using namespace std;
36  using namespace __gnu_test;
37
38  const char* filename = "tmp_perf_float.txt";
39  const int iterations = 10000000;
40
41  ostringstream oss;
42  oss << "precision " << p;
43
44  {
45    time_counter time;
46    resource_counter resource;
47
48    ofstream out(filename);
49    out.precision(p);
50    start_counters(time, resource);
51    for (int i = 0; i < iterations; ++i)
52      {
53	float f = i * 3.14159265358979323846;
54	out << f << '\n';
55      }
56    stop_counters(time, resource);
57    report_performance(__FILE__, oss.str(), time, resource);
58  }
59
60  unlink(filename);
61};
62
63int main()
64{
65  test_insertion(6);
66  test_insertion(12);
67  return 0;
68}
69