mnist-utils.c File Reference

Utitlies for handling the MNIST files. More...

#include <stdlib.h>
#include <string.h>
#include "mnist-utils.h"

Go to the source code of this file.

Functions
uint32_t	flipBytes (uint32_t n)
void	readImageFileHeader (FILE *imageFile, MNIST_ImageFileHeader *ifh)
void	readLabelFileHeader (FILE *imageFile, MNIST_LabelFileHeader *lfh)
FILE *	openMNISTImageFile (char *fileName)
	Read MNIST IMAGE file header. More...
FILE *	openMNISTLabelFile (char *fileName)
	Read MNIST label file header. More...
MNIST_Image	getImage (FILE *imageFile)
	Returns the next image in given MNIST image file. More...
MNIST_Label	getLabel (FILE *labelFile)
	Returns the next label in given MNIST label file. More...
int	getStandardDigitPixel (int num, int pixelId)

Detailed Description

Utitlies for handling the MNIST files.

See also

http://yann.lecun.com/exdb/mnist/

Author

Matt Lind

Date

July 2015

Definition in file mnist-utils.c.

Function Documentation

uint32_t flipBytes

(

uint32_t

n

)

Reverse byte order in 32bit numbers MNIST files contain all numbers in reversed byte order, and hence must be reversed before using

Definition at line 22 of file mnist-utils.c.

MNIST_Image getImage

(

FILE *

imageFile

)

Returns the next image in given MNIST image file.

Returns the next image in the given MNIST image file

Definition at line 139 of file mnist-utils.c.

MNIST_Label getLabel

(

FILE *

labelFile

)

Returns the next label in given MNIST label file.

Returns the next label in the given MNIST label file

Definition at line 159 of file mnist-utils.c.

int getStandardDigitPixel	(	int	num,
		int	pixelId
	)

Definition at line 178 of file mnist-utils.c.

FILE* openMNISTImageFile

(

char *

fileName

)

Read MNIST IMAGE file header.

Open MNIST image file and read header info by reading the header info, the read pointer is moved to the position of the 1st IMAGE

Definition at line 93 of file mnist-utils.c.

FILE* openMNISTLabelFile

(

char *

fileName

)

Read MNIST label file header.

Open MNIST label file and read header info by reading the header info, the read pointer is moved to the position of the 1st LABEL

Definition at line 117 of file mnist-utils.c.

void readImageFileHeader	(	FILE *	imageFile,
		MNIST_ImageFileHeader *	ifh
	)

Read MNIST image file header

See also

http://yann.lecun.com/exdb/mnist/ for definition details

Definition at line 43 of file mnist-utils.c.

void readLabelFileHeader	(	FILE *	imageFile,
		MNIST_LabelFileHeader *	lfh
	)

Read MNIST label file header

See also

http://yann.lecun.com/exdb/mnist/ for definition details

Definition at line 71 of file mnist-utils.c.