mersenne-twister.cpp File Reference

#include <stdio.h>
#include "mersenne-twister.h"

Include dependency graph for mersenne-twister.cpp:

Go to the source code of this file.

Macros
#define	M32(x)   (0x80000000 & x)
#define	L31(x)   (0x7FFFFFFF & x)
#define	ODD(x)   (x & 1)
#define	MD_UINT32_MAX   std::numeric_limits<uint32_t>::max()
#define	UNROLL

Functions
static void	generate_numbers ()
void	seed (uint32_t value)
uint32_t	rand_u32 ()
int	mt_rand ()
void	mt_srand (unsigned value)
float	randf_cc ()
float	randf_co ()
float	randf_oo ()
double	randd_cc ()
double	randd_co ()
double	randd_oo ()
uint64_t	rand_u64 ()

Variables
static const unsigned	SIZE = 624
static const unsigned	PERIOD = 397
static const unsigned	DIFF = SIZE - PERIOD
static uint32_t	MT [SIZE]
static unsigned	index = 0

Macro Definition Documentation

#define L31

(

x

)

(0x7FFFFFFF & x)

Definition at line 39 of file mersenne-twister.cpp.

Referenced by generate_numbers().

#define M32

(

x

)

(0x80000000 & x)

Definition at line 38 of file mersenne-twister.cpp.

Referenced by generate_numbers().

#define MD_UINT32_MAX   std::numeric_limits<uint32_t>::max()

Definition at line 42 of file mersenne-twister.cpp.

Referenced by randd_cc(), randd_co(), randd_oo(), randf_cc(), randf_co(), and randf_oo().

#define ODD

(

x

)

(x & 1)

Definition at line 40 of file mersenne-twister.cpp.

Referenced by generate_numbers().

#define UNROLL

Value:

y = M32(MT[i]) | L31(MT[i+1]); \
  MT[i] = MT[i-DIFF] ^ (y>>1) ^ MATRIX[ODD(y)]; \
  ++i;

Referenced by generate_numbers().

Function Documentation

static void generate_numbers ( )

inlinestatic

Definition at line 44 of file mersenne-twister.cpp.

References DIFF, L31, M32, MT, ODD, PERIOD, SIZE, and UNROLL.

Referenced by rand_u32().

int mt_rand

(

)

Definition at line 168 of file mersenne-twister.cpp.

References rand_u32().

Referenced by QgsPointSample::addSamplePoints(), and QgsTransectSample::createSample().

void mt_srand

(

unsigned

value

)

Definition at line 188 of file mersenne-twister.cpp.

References seed().

Referenced by QgsPointSample::createRandomPoints(), and QgsTransectSample::createSample().

uint32_t rand_u32

(

)

Definition at line 149 of file mersenne-twister.cpp.

References generate_numbers(), index, MT, and SIZE.

Referenced by mt_rand(), rand_u64(), randd_cc(), randd_co(), randd_oo(), randf_cc(), randf_co(), and randf_oo().

uint64_t rand_u64

(

)

Definition at line 223 of file mersenne-twister.cpp.

References rand_u32().

double randd_cc

(

)

Definition at line 208 of file mersenne-twister.cpp.

References MD_UINT32_MAX, and rand_u32().

double randd_co

(

)

Definition at line 213 of file mersenne-twister.cpp.

References MD_UINT32_MAX, and rand_u32().

double randd_oo

(

)

Definition at line 218 of file mersenne-twister.cpp.

References MD_UINT32_MAX, and rand_u32().

float randf_cc

(

)

Definition at line 193 of file mersenne-twister.cpp.

References MD_UINT32_MAX, and rand_u32().

float randf_co

(

)

Definition at line 198 of file mersenne-twister.cpp.

References MD_UINT32_MAX, and rand_u32().

float randf_oo

(

)

Definition at line 203 of file mersenne-twister.cpp.

References MD_UINT32_MAX, and rand_u32().

void seed

(

uint32_t

value

)

Definition at line 108 of file mersenne-twister.cpp.

References index, MT, and SIZE.

Referenced by mt_srand().

Variable Documentation

const unsigned DIFF = SIZE - PERIOD

static

Definition at line 33 of file mersenne-twister.cpp.

Referenced by generate_numbers().

unsigned index = 0

static

Definition at line 36 of file mersenne-twister.cpp.

Referenced by QgsVectorLayerFeatureIterator::FetchJoinInfo::addJoinedAttributesCached(), QgsVectorLayerFeatureIterator::FetchJoinInfo::addJoinedAttributesDirect(), QgsVectorFileWriter::addRendererAttributes(), QgsInterpolator::addVerticesToCache(), QgsGeometry::adjacentVertices(), QgsAttributeTableModel::attributeValueChanged(), QgsRasterDataProvider::block(), QgsSymbolV2::changeSymbolLayer(), QgsGeometry::closestSegmentWithContext(), QgsGeometry::closestVertex(), QgsAttributeEditor::createWidgetFromDef(), QgsSymbolV2::deleteSymbolLayer(), QgsLegendModel::dropMimeData(), QgsAttributeAction::expandAction(), QgsAttributeTableModel::feature(), QgsAttributeTableModel::featureAdded(), QgsExpressionItemSearchProxy::filterAcceptsRow(), QgsComposerTextTable::getHeaderLabels(), QgsComposerMultiFrame::handleFrameRemoval(), QgsExpressionHighlighter::highlightBlock(), QgsAttributeTableModel::idToIndex(), QgsAttributeTableModel::idToIndexList(), QgsAttributeDialog::init(), QgsTINInterpolator::insertData(), QgsOverlayAnalyzer::intersection(), QgsSingleBandGrayRendererWidget::max(), QgsRasterRendererWidget::max(), QgsVectorDataProvider::maximumValue(), QgsVectorLayer::maximumValue(), QgsSingleBandGrayRendererWidget::min(), QgsRasterRendererWidget::min(), QgsVectorDataProvider::minimumValue(), QgsVectorLayer::minimumValue(), QgsFeatureListView::mouseMoveEvent(), QgsFeatureListView::mousePressEvent(), QgsRubberBand::movePoint(), QgsRasterFormatSaveOptionsWidget::on_mProfileDeleteButton_clicked(), QgsVectorLayer::prepareLabelingAndDiagrams(), QgsGml::QgsGml(), rand_u32(), QgsVectorLayer::readSymbology(), QgsRasterBlock::readValue(), QgsComposerAttributeTable::readXML(), QgsRubberBand::removePoint(), QgsAttributeTableView::repaintRequested(), QgsFeatureListView::repaintRequested(), QgsExpression::replaceExpressionText(), seed(), QgsSingleBandGrayRendererWidget::selectedBand(), QgsRasterRendererWidget::selectedBand(), QgsFeatureSelectionModel::selectFeatures(), QgsAttributeTableView::selectRow(), QgsLinearlyInterpolatedDiagramRenderer::setClassificationAttribute(), QgsRasterBlock::setColor(), QgsPalettedRendererWidget::setFromRenderer(), QgsSingleBandGrayRendererWidget::setMax(), QgsRasterRendererWidget::setMax(), QgsSingleBandGrayRendererWidget::setMin(), QgsRasterRendererWidget::setMin(), QgsScaleComboBox::showPopup(), QgsGeometry::transform(), QgsGeometry::translate(), QgsVectorLayerUndoCommandAddAttribute::undo(), QgsVectorLayer::uniqueValues(), QgsBlendModeComboBox::updateModes(), QgsRasterBlock::writeValue(), QgsCubicRasterResampler::xDerivativeMatrix(), and QgsCubicRasterResampler::yDerivativeMatrix().

uint32_t MT[SIZE]

static

Definition at line 35 of file mersenne-twister.cpp.

Referenced by generate_numbers(), rand_u32(), and seed().

const unsigned PERIOD = 397

static

Definition at line 32 of file mersenne-twister.cpp.

Referenced by generate_numbers().

const unsigned SIZE = 624

static

Definition at line 31 of file mersenne-twister.cpp.

Referenced by generate_numbers(), rand_u32(), and seed().