1// Copyright (C) 2004, 2009 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 3, 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 COPYING3.  If not see
16// <http://www.gnu.org/licenses/>.
17
18
19#include <fstream>
20#include <sstream>
21#include <testsuite_performance.h>
22
23void test_extraction(int p = 6)
24{
25  using namespace std;
26  using namespace __gnu_test;
27
28  const char* filename = "tmp_perf_float.txt";
29  const int iterations = 10000000;
30
31  ostringstream oss;
32  oss << "precision " << p;
33
34  // Construct data.
35  {
36    ofstream out(filename);
37    out.precision(p);
38    for (int i = 0; i < iterations; ++i)
39      {
40	float f = i * 3.14159265358979323846;
41	out << f << '\n';
42      }
43  }
44
45  {
46    time_counter time;
47    resource_counter resource;
48
49    ifstream in(filename);
50    in.precision(p);
51    float f;
52    start_counters(time, resource);
53    for (int j, i = 0; i < iterations; ++i)
54      in >> f;
55    stop_counters(time, resource);
56    report_performance(__FILE__, oss.str(), time, resource);
57  }
58
59  unlink(filename);
60};
61
62int main()
63{
64  test_extraction(6);
65  test_extraction(12);
66  return 0;
67}
68