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Included SFMT RNG

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This commit is contained in:
Max-Wilhelm Bruker 2010-09-15 21:48:52 +02:00
parent d7b3764bba
commit 7e9879c0ea
7 changed files with 85 additions and 7 deletions
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31
common/rng_abstract.cpp
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@ -1,4 +1,33 @@
#include "rng_abstract.h"
#include "rng_qt.h"
#include "rng_sfmt.h"
#include <QDebug>
RNG_Abstract *rng = new RNG_Qt;
RNG_Abstract *rng = new RNG_SFMT;
QVector<int> RNG_Abstract::makeNumbersVector(int n, int min, int max)
{
const int bins = max - min + 1;
QVector<int> result(bins);
for (int i = 0; i < n; ++i) {
int number = getNumber(min, max);
if ((number < min) || (number > max))
qDebug() << "getNumber(" << min << "," << max << ") returned " << number;
else
result[number - min]++;
}
return result;
}
double RNG_Abstract::testRandom(const QVector<int> &numbers) const
{
int n = 0;
for (int i = 0; i < numbers.size(); ++i)
n += numbers[i];
double expected = (double) n / (double) numbers.size();
double chisq = 0;
for (int i = 0; i < numbers.size(); ++i)
chisq += ((double) numbers[i] - expected) * ((double) numbers[i] - expected) / expected;
return chisq;
}

3
common/rng_abstract.h
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@ -2,12 +2,15 @@
#define RNG_ABSTRACT_H
#include <QObject>
#include <QVector>
class RNG_Abstract : public QObject {
Q_OBJECT
public:
RNG_Abstract(QObject *parent = 0) : QObject(parent) { }
virtual unsigned int getNumber(unsigned int min, unsigned int max) = 0;
QVector<int> makeNumbersVector(int n, int min, int max);
double testRandom(const QVector<int> &numbers) const;
};
extern RNG_Abstract *rng;

1
common/rng_qt.cpp
View file

@ -6,7 +6,6 @@ RNG_Qt::RNG_Qt(QObject *parent)
: RNG_Abstract(parent)
{
int seed = QDateTime::currentDateTime().toTime_t();
qDebug(QString("qsrand(%1)").arg(seed).toLatin1());
qsrand(seed);
}