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a5544970 | 1 | // Copyright (C) 2004-2019 Free Software Foundation, Inc. |
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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 | |
748086b7 | 6 | // Free Software Foundation; either version 3, or (at your option) |
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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 | |
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15 | // with this library; see the file COPYING3. If not see |
16 | // <http://www.gnu.org/licenses/>. | |
60af005f | 17 | |
c7c2e831 | 18 | #include <unistd.h> |
60af005f | 19 | #include <fstream> |
070ce57b | 20 | #include <sstream> |
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21 | #include <testsuite_performance.h> |
22 | ||
070ce57b | 23 | void test_extraction(int p = 6) |
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24 | { |
25 | using namespace std; | |
26 | using namespace __gnu_test; | |
27 | ||
070ce57b | 28 | const char* filename = "tmp_perf_float.txt"; |
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29 | const int iterations = 10000000; |
30 | ||
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31 | ostringstream oss; |
32 | oss << "precision " << p; | |
33 | ||
34 | // Construct data. | |
60af005f | 35 | { |
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36 | ofstream out(filename); |
37 | out.precision(p); | |
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38 | for (int i = 0; i < iterations; ++i) |
39 | { | |
40 | float f = i * 3.14159265358979323846; | |
070ce57b | 41 | out << f << '\n'; |
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42 | } |
43 | } | |
44 | ||
45 | { | |
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46 | time_counter time; |
47 | resource_counter resource; | |
48 | ||
49 | ifstream in(filename); | |
50 | in.precision(p); | |
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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); | |
070ce57b | 56 | report_performance(__FILE__, oss.str(), time, resource); |
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57 | } |
58 | ||
070ce57b | 59 | unlink(filename); |
60af005f | 60 | }; |
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61 | |
62 | int main() | |
63 | { | |
64 | test_extraction(6); | |
65 | test_extraction(12); | |
66 | return 0; | |
67 | } |