Public Member Functions | Private Attributes | Friends | List of all members
PLMD::VectorGeneric< n > Class Template Reference


Class implementing fixed size vectors of doubles More...

#include <Vector.h>

Public Member Functions

 VectorGeneric (double, double)
 Create it with preassigned components. More...
 
 VectorGeneric (double, double, double)
 
 VectorGeneric (double, double, double, double)
 
 VectorGeneric ()
 create it null More...
 
void zero ()
 set it to zero More...
 
double & operator[] (unsigned i)
 array-like access [i] More...
 
const double & operator[] (unsigned i) const
 array-like access [i] More...
 
double & operator() (unsigned i)
 parenthesis access (i) More...
 
const double & operator() (unsigned i) const
 parenthesis access (i) More...
 
VectorGenericoperator+= (const VectorGeneric &b)
 increment More...
 
VectorGenericoperator-= (const VectorGeneric &b)
 decrement More...
 
VectorGenericoperator*= (double s)
 multiply More...
 
VectorGenericoperator/= (double s)
 divide More...
 
VectorGeneric operator+ () const
 sign + More...
 
VectorGeneric operator- () const
 sign - More...
 
double modulo2 () const
 compute the squared modulo More...
 
double modulo () const
 Compute the modulo. More...
 
template<>
 VectorGeneric (double x0, double x1)
 
template<>
 VectorGeneric (double x0, double x1, double x2)
 
template<>
 VectorGeneric (double x0, double x1, double x2, double x3)
 

Private Attributes

double d [n]
 

Friends

template<unsigned m>
VectorGeneric< m > operator+ (const VectorGeneric< m > &, const VectorGeneric< m > &)
 return v1+v2 More...
 
template<unsigned m>
VectorGeneric< m > operator- (const VectorGeneric< m > &, const VectorGeneric< m > &)
 return v1-v2 More...
 
template<unsigned m>
VectorGeneric< m > operator* (double, const VectorGeneric< m > &)
 return s*v More...
 
template<unsigned m>
VectorGeneric< m > operator* (const VectorGeneric< m > &, double)
 return v*s More...
 
template<unsigned m>
VectorGeneric< m > operator/ (const VectorGeneric< m > &, double)
 return v/s More...
 
template<unsigned m>
VectorGeneric< m > delta (const VectorGeneric< m > &v1, const VectorGeneric< m > &v2)
 return v2-v1 More...
 
template<unsigned m>
double dotProduct (const VectorGeneric< m > &, const VectorGeneric< m > &)
 return v1 .scalar. v2 More...
 
VectorGeneric< 3 > crossProduct (const VectorGeneric< 3 > &, const VectorGeneric< 3 > &)
 return v1 .vector. More...
 
template<unsigned m>
double modulo2 (const VectorGeneric< m > &)
 friend version of modulo2 (to simplify some syntax) More...
 
template<unsigned m>
double modulo (const VectorGeneric< m > &)
 friend version of modulo (to simplify some syntax) More...
 
template<unsigned m>
std::ostream & operator<< (std::ostream &os, const VectorGeneric< m > &)
 << operator. More...
 

Detailed Description

template<unsigned n>
class PLMD::VectorGeneric< n >


Class implementing fixed size vectors of doubles

Template Parameters
nThe number of elements of the vector.

This class implements a vector of doubles with size fixed at compile time. It is useful for small fixed size objects (e.g. 3d vectors) as it does not waste space to store the vector size. Moreover, as the compiler knows the size, it can be completely opimized inline. All the methods are inlined for better optimization and all the loops are explicitly unrolled using PLMD::LoopUnroller class. Vector elements are initialized to zero by default. Notice that this means that constructor is a bit slow. This point might change in future if we find performance issues. Accepts both [] and () syntax for access. Several functions are declared as friends even if not necessary so as to properly appear in Doxygen documentation.

Aliases are defined to simplify common declarations (Vector, Vector2d, Vector3d, Vector4d). Also notice that some operations are only available for 3 dimensional vectors.

Example of usage

#include "Vector.h"

using namespace PLMD;

int main(){
  VectorGeneric<3> v1;
  v1[0]=3.0;
// use equivalently () and [] syntax:
  v1(1)=5.0;
// initialize with components
  VectorGeneric<3> v2=VectorGeneric<3>(1.0,2.0,3.0);
  VectorGeneric<3> v3=crossProduct(v1,v2);
  double d=dotProduct(v1,v2);
  v3+=v1;
  v2=v1+2.0*v3;
}

Constructor & Destructor Documentation

◆ VectorGeneric() [1/7]

template<unsigned n>
PLMD::VectorGeneric< n >::VectorGeneric ( double  ,
double   
)

Create it with preassigned components.

Only available for sizes 2, 3 and 4

◆ VectorGeneric() [2/7]

template<unsigned n>
PLMD::VectorGeneric< n >::VectorGeneric ( double  ,
double  ,
double   
)

◆ VectorGeneric() [3/7]

template<unsigned n>
PLMD::VectorGeneric< n >::VectorGeneric ( double  ,
double  ,
double  ,
double   
)

◆ VectorGeneric() [4/7]

template<unsigned n>
PLMD::VectorGeneric< n >::VectorGeneric ( )

create it null

◆ VectorGeneric() [5/7]

template<>
PLMD::VectorGeneric< 2 >::VectorGeneric ( double  x0,
double  x1 
)
inline

◆ VectorGeneric() [6/7]

template<>
PLMD::VectorGeneric< 3 >::VectorGeneric ( double  x0,
double  x1,
double  x2 
)
inline

◆ VectorGeneric() [7/7]

template<>
PLMD::VectorGeneric< 4 >::VectorGeneric ( double  x0,
double  x1,
double  x2,
double  x3 
)
inline

Member Function Documentation

◆ modulo()

template<unsigned n>
double PLMD::VectorGeneric< n >::modulo ( ) const

Compute the modulo.

Shortcut for sqrt(v.modulo2())

◆ modulo2()

template<unsigned n>
double PLMD::VectorGeneric< n >::modulo2 ( ) const

compute the squared modulo

◆ operator()() [1/2]

template<unsigned n>
double & PLMD::VectorGeneric< n >::operator() ( unsigned  i)

parenthesis access (i)

◆ operator()() [2/2]

template<unsigned n>
const double & PLMD::VectorGeneric< n >::operator() ( unsigned  i) const

parenthesis access (i)

◆ operator*=()

template<unsigned n>
VectorGeneric< n > & PLMD::VectorGeneric< n >::operator*= ( double  s)

multiply

◆ operator+()

template<unsigned n>
VectorGeneric< n > PLMD::VectorGeneric< n >::operator+ ( ) const

sign +

◆ operator+=()

template<unsigned n>
VectorGeneric< n > & PLMD::VectorGeneric< n >::operator+= ( const VectorGeneric< n > &  b)

increment

◆ operator-()

template<unsigned n>
VectorGeneric< n > PLMD::VectorGeneric< n >::operator- ( ) const

sign -

◆ operator-=()

template<unsigned n>
VectorGeneric< n > & PLMD::VectorGeneric< n >::operator-= ( const VectorGeneric< n > &  b)

decrement

◆ operator/=()

template<unsigned n>
VectorGeneric< n > & PLMD::VectorGeneric< n >::operator/= ( double  s)

divide

◆ operator[]() [1/2]

template<unsigned n>
double & PLMD::VectorGeneric< n >::operator[] ( unsigned  i)

array-like access [i]

◆ operator[]() [2/2]

template<unsigned n>
const double & PLMD::VectorGeneric< n >::operator[] ( unsigned  i) const

array-like access [i]

◆ zero()

template<unsigned n>
void PLMD::VectorGeneric< n >::zero ( )

set it to zero

Friends And Related Function Documentation

◆ crossProduct

template<unsigned n>
VectorGeneric<3> crossProduct ( const VectorGeneric< 3 > &  v1,
const VectorGeneric< 3 > &  v2 
)
friend

return v1 .vector.

v2 Only available for size 3

◆ delta

template<unsigned n>
template<unsigned m>
VectorGeneric<m> delta ( const VectorGeneric< m > &  v1,
const VectorGeneric< m > &  v2 
)
friend

return v2-v1

◆ dotProduct

template<unsigned n>
template<unsigned m>
double dotProduct ( const VectorGeneric< m > &  ,
const VectorGeneric< m > &   
)
friend

return v1 .scalar. v2

◆ modulo

template<unsigned n>
template<unsigned m>
double modulo ( const VectorGeneric< m > &  )
friend

friend version of modulo (to simplify some syntax)

◆ modulo2

template<unsigned n>
template<unsigned m>
double modulo2 ( const VectorGeneric< m > &  )
friend

friend version of modulo2 (to simplify some syntax)

◆ operator* [1/2]

template<unsigned n>
template<unsigned m>
VectorGeneric<m> operator* ( double  ,
const VectorGeneric< m > &   
)
friend

return s*v

◆ operator* [2/2]

template<unsigned n>
template<unsigned m>
VectorGeneric<m> operator* ( const VectorGeneric< m > &  ,
double   
)
friend

return v*s

◆ operator+

template<unsigned n>
template<unsigned m>
VectorGeneric<m> operator+ ( const VectorGeneric< m > &  ,
const VectorGeneric< m > &   
)
friend

return v1+v2

◆ operator-

template<unsigned n>
template<unsigned m>
VectorGeneric<m> operator- ( const VectorGeneric< m > &  ,
const VectorGeneric< m > &   
)
friend

return v1-v2

◆ operator/

template<unsigned n>
template<unsigned m>
VectorGeneric<m> operator/ ( const VectorGeneric< m > &  ,
double   
)
friend

return v/s

◆ operator<<

template<unsigned n>
template<unsigned m>
std::ostream& operator<< ( std::ostream &  os,
const VectorGeneric< m > &   
)
friend

<< operator.

Allows printing vector v with std::cout<<v;

Member Data Documentation

◆ d

template<unsigned n>
double PLMD::VectorGeneric< n >::d[n]
private

The documentation for this class was generated from the following file: