A Vec<D, T><D,T> is a D-component vector with elements of type T. More...

#include <Vec.h>

Public Member Functions
Constructors
	Vec ()
	Default constructor.

	Vec (const Vec< D, T > &v)
	Copy constructor.

	Vec (T const *v)
	Constructor from a C-array.

	Vec (T s)
	Constructor, initialize all elements to a common scalar value.

Assignment and Initialization
Vec< D, T > &	operator= (const Vec< D, T > &v)
	Copy assignment.

Vec< D, T > &	operator= (T s)
	Assignment all elements to the same scalar T value.

Vec< D, T > &	setToZero ()
	Set all elements to zero.

Arithmetic Assignment
void	operator+= (const Vec< D, T > &dv)
	Add vector dv to this vector.

void	operator-= (const Vec< D, T > &dv)
	Subtract vector dv from this vector.

void	operator+= (T s)
	Add a common scalar to all components.

void	operator-= (T s)
	Subtract a common scalar from all components.

void	operator*= (T s)
	Multiply this vector by scalar s.

Array Subscript
const T &	operator[] (int i) const
	Return one Cartesian element by value.

T &	operator[] (int i)
	Return one element of the vector by references.

Vec<D, T> valued functions (assigned to invoking object)
Vec< D, T > &	add (const Vec< D, T > &v1, const Vec< D, T > &v2)
	Add vectors v1 and v2.

Vec< D, T > &	subtract (const Vec< D, T > &v1, const Vec< D, T > &v2)
	Subtract vector v2 from v1.

Vec< D, T > &	multiply (const Vec< D, T > &v, T s)
	Multiply a vector v by a scalar s.

Vec< D, T > &	negate (const Vec< D, T > &v)
	Return negative of vector v.

Vec< D, T > &	negate ()
	Negate all elements of this vector.

template<class Archive >
void	serialize (Archive &ar, const unsigned int version)
	Serialize to/from an archive.

Detailed Description

template<int D, typename T>
class Pscf::Vec< D, T >

A Vec<D, T><D,T> is a D-component vector with elements of type T.

The elements of a Vec<D, T> can be accessed using subscript operator, as for a built in array.

The arithmetic assignment operators +=, -=, and *= are overloaded to allow vector-vector addition and subtraction and vector-scalar multiplication.

All other unary and binary mathematical operations are implemented as methods or free functions. Operations that yield a Vec<D, T>, such as addition, are implemented by methods that assign the result to the invoking Vec object, and return this object by reference. For example,

Vec<3, double> a, b, c;
 
a[0] = 0.0
a[1] = 1.0
a[2] = 2.0
 
b[0] =  0.5
b[1] = -0.5
b[2] = -1.5
 
// Set a = a + b
a += b
 
// Set b = b*2
b *= 2.0;
 
// Set c = a + b
c.add(a, b);

This syntax for functions that yield a vector makes the allocation of a temporary Vec<D, T> object explicit, by requiring that the invoking function be a member of an object that will hold the result.

For efficiency, all member functions are declared inline.

Definition at line 65 of file Vec.h.

Constructor & Destructor Documentation

◆ Vec() [1/4]

template<int D, typename T >

Pscf::Vec< D, T >::Vec ( )

inline

Default constructor.

Definition at line 317 of file Vec.h.

◆ Vec() [2/4]

template<int D, typename T >

Pscf::Vec< D, T >::Vec ( const Vec< D, T > & v )

inline

Copy constructor.

Parameters

v	Vec<D, T> to be copied

Definition at line 324 of file Vec.h.

◆ Vec() [3/4]

template<int D, typename T >

Pscf::Vec< D, T >::Vec ( T const * v )

inlineexplicit

Constructor from a C-array.

Parameters

v	array to be copied

Definition at line 335 of file Vec.h.

◆ Vec() [4/4]

template<int D, typename T >

Pscf::Vec< D, T >::Vec ( T s )

inlineexplicit

Constructor, initialize all elements to a common scalar value.

Parameters

s	initial value for all elements.

Definition at line 346 of file Vec.h.

Member Function Documentation

◆ operator=() [1/2]

template<int D, typename T >

Vec< D, T > & Pscf::Vec< D, T >::operator= ( const Vec< D, T > & v )

inline

Copy assignment.

Parameters

v	Vec<D, T> to assign.

Returns: this object, after modification

Definition at line 357 of file Vec.h.

◆ operator=() [2/2]

template<int D, typename T >

Vec< D, T > & Pscf::Vec< D, T >::operator= ( T s )

inline

Assignment all elements to the same scalar T value.

Parameters

s	scalar value

Returns: this object, after modification

Definition at line 369 of file Vec.h.

◆ setToZero()

template<int D, typename T >

Vec< D, T > & Pscf::Vec< D, T >::setToZero ( )

inline

Set all elements to zero.

Returns: this object, after modification

Definition at line 381 of file Vec.h.

References Util::setToZero().

◆ operator+=() [1/2]

template<int D, typename T >

void Pscf::Vec< D, T >::operator+= ( const Vec< D, T > & dv )

inline

Add vector dv to this vector.

Upon return, *this = this + dv.

Parameters

dv	vector increment (input)

Definition at line 393 of file Vec.h.

◆ operator-=() [1/2]

template<int D, typename T >

void Pscf::Vec< D, T >::operator-= ( const Vec< D, T > & dv )

inline

Subtract vector dv from this vector.

Upon return, *this = this + dv.

Parameters

dv	vector increment (input)

Definition at line 404 of file Vec.h.

◆ operator+=() [2/2]

template<int D, typename T >

void Pscf::Vec< D, T >::operator+= ( T s )

inline

Add a common scalar to all components.

Parameters

s	scalar additive constant (input)

Definition at line 415 of file Vec.h.

◆ operator-=() [2/2]

template<int D, typename T >

void Pscf::Vec< D, T >::operator-= ( T s )

inline

Subtract a common scalar from all components.

Parameters

s	scalar subtractive constant (input)

Definition at line 426 of file Vec.h.

◆ operator*=()

template<int D, typename T >

void Pscf::Vec< D, T >::operator*= ( T s )

inline

Multiply this vector by scalar s.

Upon return, *this = (*this)*s.

Parameters

s	scalar multiplier

Definition at line 437 of file Vec.h.

◆ operator[]() [1/2]

template<int D, typename T >

const T & Pscf::Vec< D, T >::operator[] ( int i ) const

inline

Return one Cartesian element by value.

Parameters

i	element index

Returns: element i of the vector

Definition at line 448 of file Vec.h.

◆ operator[]() [2/2]

template<int D, typename T >

T & Pscf::Vec< D, T >::operator[] ( int i )

inline

Return one element of the vector by references.

Parameters

i	element index

Returns: element i of this vector

Definition at line 459 of file Vec.h.

◆ add()

template<int D, typename T >

Vec< D, T > & Pscf::Vec< D, T >::add	(	const Vec< D, T > &	v1,
		const Vec< D, T > &	v2 )

inline

Add vectors v1 and v2.

Upon return, *this = v1 + v2.

Parameters

v1	vector (input)
v2	vector (input)

Returns: modified invoking vector

Definition at line 473 of file Vec.h.

Referenced by Pscf::operator+().

◆ subtract()

template<int D, typename T >

Vec< D, T > & Pscf::Vec< D, T >::subtract	(	const Vec< D, T > &	v1,
		const Vec< D, T > &	v2 )

inline

Subtract vector v2 from v1.

Upon return, *this = v1 - v2.

Parameters

v1	vector (input)
v2	vector (input)

Returns: modified invoking vector

Definition at line 490 of file Vec.h.

◆ multiply()

template<int D, typename T >

Vec< D, T > & Pscf::Vec< D, T >::multiply	(	const Vec< D, T > &	v,
		T	s )

inline

Multiply a vector v by a scalar s.

Upon return, *this = v*s.

Parameters

v	vector input
s	scalar input

Returns: modified invoking vector

Definition at line 505 of file Vec.h.

Referenced by Pscf::Prdc::UnitCellBase< D >::ksq().

◆ negate() [1/2]

template<int D, typename T >

Vec< D, T > & Pscf::Vec< D, T >::negate ( const Vec< D, T > & v )

inline

Return negative of vector v.

Upon return, *this = -v;

Parameters

v	vector input

Returns: modified invoking vector

Definition at line 520 of file Vec.h.

Referenced by Pscf::Rpc::FourthOrderParameter< D >::computePrefactor(), Pscf::Rpg::FourthOrderParameter< D >::computePrefactor(), Pscf::Prdc::Basis< D >::isValid(), and Pscf::Prdc::readBasisData().

◆ negate() [2/2]

template<int D, typename T >

Vec< D, T > & Pscf::Vec< D, T >::negate ( )

inline

Negate all elements of this vector.

Upon return, all elements of this have been negated (reversed)

Returns: this object, after modification

Definition at line 535 of file Vec.h.

◆ serialize()

template<int D, typename T >

template<class Archive >

void Pscf::Vec< D, T >::serialize	(	Archive &	ar,
		const unsigned int	version )

inline

Serialize to/from an archive.

Implementation uses syntax of Boost::serialize.

Parameters

ar	archive
version	archive version id

Definition at line 549 of file Vec.h.

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

Vec.h

Public Member Functions

Vec<D, T> valued functions (assigned to invoking object)

Detailed Description

Constructor & Destructor Documentation

◆ Vec() [1/4]

◆ Vec() [2/4]

◆ Vec() [3/4]

◆ Vec() [4/4]

Member Function Documentation

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ setToZero()

◆ operator+=() [1/2]

◆ operator-=() [1/2]

◆ operator+=() [2/2]

◆ operator-=() [2/2]

◆ operator*=()

◆ operator[]() [1/2]

◆ operator[]() [2/2]

◆ add()

◆ subtract()

◆ multiply()

◆ negate() [1/2]

◆ negate() [2/2]

◆ serialize()