Tools.h File Reference

Set of useful functions, in particular to convert data to/from string. More...

Defines
#define	EXTRACT_BIT(n, i)   ((n&(1<<i))?1:0)
Functions
template<typename T >
bool	isnan (const T &value)
template<typename T >
bool	isinf (const T &value)
template<typename T >
bool	isninf (const T &value)
std::pair< double, double >	stDev (const std::vector< double > &)
std::pair< long double, long double >	stDevLD (const std::vector< long double > &)
double	roundDecimal (double toRound, unsigned short places)
template<class T >
void	clearVectorOfPointers (std::vector< T * > &vec)
template<class T >
std::ostream &	operator<< (std::ostream &os, const std::vector< T > &v)
size_t	splitFrom (std::string s, std::string sep, std::vector< std::string > &v)
unsigned long	ones32 (register unsigned long x)
unsigned long	lzc (register unsigned long x)
unsigned long	tzc (register unsigned long x)
template<class T >
T	FromStringTo (const std::string &s)
template<class T >
std::string	ToStringFrom (const T &t)
template<class T >
std::string	ToStringFrom (const std::vector< T > &t)
std::string	dateToString ()
std::string	padSpaces (const std::string &toPad, const size_t &pads)
template<class T >
std::string	vecToString (const std::vector< T > &vec)

---

Detailed Description

Set of useful functions, in particular to convert data to/from string.

Author:

Sebastien Varrette <Sebastien.Varrette@imag.fr> Marek Ostaszewski <Marek.Ostaszewski@uni.lu>

Date:

Thu Dec 27 2007

Copyright (c) 2007 Sebastien Varrette, Marek Ostaszewski (see COPYING)

---

Define Documentation

#define EXTRACT_BIT	(	n,
		i		)	((n&(1<<i))?1:0)

---

Function Documentation

template<class T >

void clearVectorOfPointers

(

std::vector< T * > &

vec

)

[inline]

Manages clearing the vector of pointers (

Parameters:

vec).

For every element invokes destructor and then changes the pointer to NULL.

std::string dateToString

(

)

template<class T >

T FromStringTo

(

const std::string &

s

)

[inline]

FromStringTo convert a string to a value of type T Example : int i = FromStringTo<int>(s)

Parameters:

s

string to convert

Returns:

value of type T corresponding to the conversion of s to this type

template<typename T >

bool isinf

(

const T &

value

)

[inline]

template<typename T >

bool isnan

(

const T &

value

)

[inline]

template<typename T >

bool isninf

(

const T &

value

)

[inline]

unsigned long lzc

(

register unsigned long

x

)

[inline]

Count the number of leading zeroes in a 32-bit wide integer.

Code taken from the "Leading Zero Count" algorithm at http://aggregate.org/MAGIC/

Parameters:

x

the value to test.

Returns:

the number of leading zeroes in x.

unsigned long ones32

(

register unsigned long

x

)

[inline]

Count the number of bits that are set in a 32-bit wide integer.

Code taken from the "Population Count (Ones Count)" algorithm at http://aggregate.org/MAGIC/

Note: this solution appears to be faster even compared to the "Parallel Count" and "MIT HACKMEM Count" from: http://www-db.stanford.edu/~manku/bitcount/bitcount.html

Parameters:

x

the value to test.

Returns:

the number of bits that are set in x.

template<class T >

std::ostream& operator<<	(	std::ostream &	os,
		const std::vector< T > &	v
	)			[inline]

Helpful function to print directly the content of a vector in an output stream

std::string padSpaces	(	const std::string &	toPad,
		const size_t &	pads
	)

double roundDecimal	(	double	toRound,
		unsigned short	places
	)

size_t splitFrom	(	std::string	s,
		std::string	sep,
		std::vector< std::string > &	v
	)

Split the string s, using a list of separators specified in sep. The result is stored in the vector v.

Parameters:

	s	the string to split
	sep	list of separators to consider, " ." for instance to consider ' ' and '.' as separators
	v	the vectors containing the result of the split

Returns:

number of elements in v

std::pair<double,double> stDev

(

const std::vector< double > &

)

std::pair<long double,long double> stDevLD

(

const std::vector< long double > &

)

template<class T >

std::string ToStringFrom

(

const std::vector< T > &

t

)

[inline]

template<class T >

std::string ToStringFrom

(

const T &

t

)

[inline]

ToStringFrom convert any value v of type T to string Exemple: string s = ToStringFrom(14)

Parameters:

t

value to convert

Returns:

a string corresponding to v

unsigned long tzc

(

register unsigned long

x

)

[inline]

Count the number of trailing zeroes in a 32-bit wide integer.

Code taken from the "Trailing Zero Count" algorithm at http://aggregate.org/MAGIC/

Parameters:

x

the value to test.

Returns:

the number of trailing zeroes in x.

template<class T >

std::string vecToString

(

const std::vector< T > &

vec

)

[inline]