#include "Utilities.h"
#include <sstream>
#include <algorithm>
#include <ctype.h>
#include <time.h>
#include <math.h>

Functions
vector< string >	getTokens (string source, char separator)

bool	isBlank (char *buffer, int n)

void	formatGPStime (char buffer, int bufferSize, char fmtYtoM, char *fmtSec, int week, double tow)

void	formatLocalTime (char buffer, int bufferSize, char fmt)

int	getGPSweek (int year, int month, int day, int hour, int min, float sec)

int	getGPSweek (double secs)

double	getGPStow (int year, int month, int day, int hour, int min, float sec)

double	getGPStow (double secs)

void	setWeekTow (int year, int month, int day, int hour, int min, double sec, int &week, double &tow)

double	getSecsGPSEphe (int year, int month, int day, int hour, int min, float sec)

double	getSecsGPSEphe (int week, double tow)

string	strToUpper (string strToConvert)

int	getTwosComplement (unsigned int number, unsigned int nbits)

int	getSigned (unsigned int number, int nbits)

unsigned int	reverseWord (unsigned int wordToReverse, int nBits)

unsigned int	getBits (unsigned int *stream, int bitpos, int len)

Detailed Description

Contains the implementation of routines used in several places.

Function Documentation

void formatGPStime	(	char *	buffer,
		int	bufferSize,
		char *	fmtYtoM,
		char *	fmtSec,
		int	week,
		double	tow
	)

formatGPStime format a GPS time point giving text GPS calendar data using time formats provided.

Parameters

buffer	the text buffer where calendar data are placed
bufferSize	of the text buffer in bytes
fmtYtoM	the format to be used for year, month, day, hour and minute (all int), as per strftime
fmtSec	the format to be used for seconds (a double), as per sprintf
week	the GPS week from 6/1/1980
tow	the GPS time of week, or seconds from the beginning of the week

void formatLocalTime	(	char *	buffer,
		int	bufferSize,
		char *	fmt
	)

formatLocalTime gives text calendar data of local time using the format provided (as per strftime).

Parameters

buffer	the text buffer where calendar data are placed
bufferSize	of the text buffer in bytes
fmt	the format to be used for conversion, as per strftime

double getGPStow	(	int	year,
		int	month,
		int	day,
		int	hour,
		int	min,
		float	sec
	)

getGPStow compute the Time Of Week (seconds from the begeing of week at Sunday 00:00h ) for a given GPS date and time

Parameters

year	of the date
month	of the date
day	of the date
hour	of the date
min	of the date
sec	second of the date

Returns: the TOW for the given date

double getGPStow ( double secs )

getGPStow compute the Time Of Week (seconds from the begeing of week at Sunday 00:00h ) for a given instant

Parameters

secs	seconds from of the GPS ephemeris (6/1/1980 00:00:0.0)

Returns: the TOW for the given instant

int getGPSweek	(	int	year,
		int	month,
		int	day,
		int	hour,
		int	min,
		float	sec
	)

getGPSweek compute number of weeks from the GPS ephemeris (6/1/1980) to a given GPS date and time

Parameters

year	of the date
month	of the date
day	of the date
hour	of the date
min	of the date
sec	second of the date

Returns: the weeks from 6/1/1980 to the given date

int getGPSweek ( double secs )

getGPSweek compute number of weeks from the GPS ephemeris (6/1/1980) to a given instant in seconds

Parameters

secs	seconds from of the GPS ephemeris (6/1/1980 00:00:0.0)

Returns: the weeks from 6/1/1980 to the given instant

double getSecsGPSEphe	(	int	year,
		int	month,
		int	day,
		int	hour,
		int	min,
		float	sec
	)

getSecsGPSEphe computes time instant in seconds from the GPS ephemeris (6/1/1980) to a given date and time

Parameters

year	of the date
month	of the date
day	of the date
hour	of the date
min	of the date
sec	second of the date

Returns: the seconds from 0h of 6/1/1980 to the given date

double getSecsGPSEphe	(	int	week,
		double	tow
	)

getSecsGPSEphe compute instant in seconds from the GPS ephemeris (6/1/1980) to a given date stated in GPS week and tow

Parameters

week	the GPS week number (continuous, without roll over)
tow	the time of week

Returns: the seconds from 0h of 6/1/1980 to the given date stated in GPS week and tow

int getSigned	(	unsigned int	number,
		int	nbits
	)

getSigned converts a signed representation from a given number of bits to standard 32 bits signed representation (two's complement). Number is an integer containing a bit stream of nbits length which represents a nbits signed integer, that is:

if the most significant bit is 0, the number is positive. Its value in a 32 bits representation is the same.
if the most significant bit is 1, the number is negative and must be converted to standard negative number of 32 bits

Parameters

number	the 32 bits pattern with the number to be interpreted
nbits	the number of significative bits in the pattern

Returns: the value of the number (its 32 bits representation)

vector<string> getTokens	(	string	source,
		char	separator
	)

getTokens gets tokens from a string separated by the given separator

Parameters

source	a string to be split into tokens
separator	the character used to separate tokens

Returns: a vector of strings containing the extracted tokens

int getTwosComplement	(	unsigned int	number,
		unsigned int	nbits
	)

getTwosComplement converts a two's complement representation from a given number of bits to 32 bits. Number is an integer containing a bit stream of nbits length which represents a nbits integer in two's complement, that is:

if number is in the range 0 to 2^(nbits-1) is positive. Its value in a 32 bits representation is the same.
if number is in the range 2^(nbits-1) to 2^(nbits)-1, is negative and must be converted subtracting 2^(nbits)

Parameters

number	the 32 bits pattern with the number to be interpreted
nbits	the number of significative bits in the pattern

Returns: the value of the number (its 32 bits representation)

bool isBlank	(	char *	buffer,
		int	n
	)

isBlank checks if in the given char buffer all chars are blanks

Parameters

buffer	the array of chars to check
n	the length to check

Returns: true if all n chars are blanks, false otherwise

void setWeekTow	(	int	year,
		int	month,
		int	day,
		int	hour,
		int	min,
		double	sec,
		int &	week,
		double &	tow
	)

setWeekTow compute GPS week and tow for a given GPS date and time

Parameters

year	of the date
month	of the date
day	of the date
hour	of the date
min	of the date
sec	second of the date
week	GPS week to be computed
tow	GPS tow to be computed

string strToUpper ( string strToConvert )

strToUpper converts the characters in the given string to upper case

Parameters

strToConvert the string to convert to upper case

Returns: the converted string

Functions

Detailed Description

Function Documentation