1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*!
* \file
* \brief Timer classes test program
* \author Thomas Eriksson, Tony Ottosson, Tobias Ringstrom and Adam Piatyszek
*
* -------------------------------------------------------------------------
*
* IT++ - C++ library of mathematical, signal processing, speech processing,
* and communications classes and functions
*
* Copyright (C) 1995-2008 (see AUTHORS file for a list of contributors)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* -------------------------------------------------------------------------
*/
#include <itpp/itbase.h>
using namespace std;
using namespace itpp;
int main()
{
const double period = 2.0;
const double relative_error = 0.05;
CPU_Timer t1;
Real_Timer t2;
t1.start();
while (t1.get_time() < period) ;
t1.stop();
tic();
t2.start();
while (t2.get_time() < period) ;
t2.stop();
double t3 = toc();
if (fabs(t1.get_time() - period) <= relative_error * period)
cout << "CPU_Timer is OK" << endl;
else
cout << "CPU_Timer difference: " << fabs(t1.get_time() - period)
<< " > " << relative_error * period << endl;
if (fabs(t2.get_time() - period) <= relative_error * period)
cout << "Real_Timer is OK" << endl;
else
cout << "Real_Timer difference: " << fabs(t1.get_time() - period)
<< " > " << relative_error * period << endl;
if (t3 >= t2.get_time())
cout << "tic() and toc() are OK" << endl;
return 0;
}
|
