utils.c File Reference

Utilitary tools. More...

#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include <time.h>
#include <unistd.h>
#include "utils.h"

Functions
int	stringToByteArray (char *s, byte a[], unsigned int len)
	Translates a string composed of "0"s or "1"s into a byte array.
int	fileExists (const char *filename)
	Checks the accessibility of a file for reading.
long long	timeval_diff (struct timeval *difference, struct timeval *end_time, struct timeval *start_time)
	Computes the difference between two time values.

---

Detailed Description

Utilitary tools.

Author:

Nicolas Paglieri & Olivier Benjamin

Version:

File Revision #6

Date:

24/06/2011

---

Function Documentation

int fileExists

(

const char *

filename

)

Checks the accessibility of a file for reading.

Parameters:

[in]

filename

Path of the file to test

Returns:

non-zero if the file is accessible, 0 otherwise

Referenced by main().

int stringToByteArray	(	char *	s,
		byte	a[],
		unsigned int	len
	)

Translates a string composed of "0"s or "1"s into a byte array.

Parameters:

[in]	s	Input string
[out]	a	Array to construct
[in]	len	Length of the string

Returns:

0 if the translation has been successful, non-zero otherwise

Referenced by main().

long long timeval_diff	(	struct timeval *	difference,
		struct timeval *	end_time,
		struct timeval *	start_time
	)

Computes the difference between two time values.

Parameters:

[out]	difference	Processed difference
[in]	end_time	End time
[in]	start_time	Start time

Returns:

time difference in microseconds