mnist-utils.c File Reference

Utitlies for handling the MNIST files. More...

#include <stdio.h>
#include <stdlib.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...

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 23 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 140 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 160 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 94 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 118 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 44 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 72 of file mnist-utils.c.