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
|
/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkNormalVariateGeneratorTest1.cxx
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
#include "itkFixedArray.h"
#include "itkNormalVariateGenerator.h"
int itkNormalVariateGeneratorTest1( int, char * [] )
{
typedef itk::Statistics::NormalVariateGenerator NormalGeneratorType;
NormalGeneratorType::Pointer normalGenerator = NormalGeneratorType::New();
normalGenerator->Initialize( 101 );
std::cout << normalGenerator->GetNameOfClass() << std::endl;
normalGenerator->Print( std::cout );
const unsigned int numberOfSamples = 1000;
double sum = 0.0;
double sum2 = 0.0;
for( unsigned int i=0; i<numberOfSamples; i++ )
{
const double value = normalGenerator->GetVariate();
sum += value;
sum2 += value * value;
}
const double average = sum / numberOfSamples;
std::cout << "Average = " << average << std::endl;
const double variance = sum2 / numberOfSamples - sum * sum;
std::cout << "Variance = " << variance << std::endl;
//
// FIXME: Add here numerical verification (regression testing)
//
std::cerr << "[PASSED]" << std::endl;
return EXIT_SUCCESS;
}
|
