grid< T > Class Template Reference

A n-dimensional grid of arbitrary type to hold, densities, fields, boundary values etc. Unlike C-arrays the grid size specifies the maximum index of the elements. This means that the grid contains one element more in each direction than the equivalent C-array. Elements are from (0,0,...,0) to (size[0], size[1], ... , size[n]). The implementation is mostly independent on the dimension of the system because it makes use of the dimensionality dependent Position and GridPosition classes. More...

#include <numeric.h>

List of all members.

Public Member Functions
	grid ()
	Default constructor.
	grid (GridPosition size_)
	Construct with size.
	grid (const grid &agrid)
const GridPosition &	Size () const
	The n-dimensional size of the grid.
void	Resize (const GridPosition &asize)
	Resizes the grid. Makes use of the resize method of valarray to free/reallocate the memory.
const grid &	operator= (const std::valarray< T > arr)
	assignment operator. Copies the elements of one array into the other. This operator only works when the two grids are of equal size.
const grid &	operator= (const T val)
const grid &	operator+= (const std::valarray< T > arr)
	operators for addition, subtraction, multiplication and division. Only the += -= *= and /= operators are defined for efficiency reasons. Uses the according operators of the valarray. Work element-wise. These operators only work when the two grids are of equal size.
const grid &	operator+= (const grid &arr)
const grid &	operator-= (const std::valarray< T > arr)
const grid &	operator-= (const grid &arr)
const grid &	operator*= (const T val)
const grid &	operator/= (const T val)
T &	operator[] (const GridPosition &i)
T	operator[] (const GridPosition &i) const
T	operator() (const Position &X) const
grid< Position >	derive (Position ddx)
void	apply (T fkt())

Protected Attributes
T *	G
	Holds the values in a one dimensional valarray.
GridPosition	size
	The n-dimensional size of the grid.
int	gsize

---

Detailed Description

template<class T>
class grid< T >

A n-dimensional grid of arbitrary type to hold, densities, fields, boundary values etc. Unlike C-arrays the grid size specifies the maximum index of the elements. This means that the grid contains one element more in each direction than the equivalent C-array. Elements are from (0,0,...,0) to (size[0], size[1], ... , size[n]). The implementation is mostly independent on the dimension of the system because it makes use of the dimensionality dependent Position and GridPosition classes.

Todo:

Write iterators for n–dimensional grid, getting rid of macros in the loops. This results in unreadable code.

---

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

• numeric.h