Convenience Functions

Helper functions that help inspect and debug ndpolator structures. More...

Functions
void	ndp_table_print (ndp_table *table)
	Prints ndp_table information.
void	ndp_hypercube_print (ndp_hypercube *hc, const char *prefix)
	Prints ndp_hypercube information for debugging.
int	ndp_idx2pos (ndp_axes *axes, int vdim, int *index, int *pos)
	Converts array of indices to integer position in flattened array.
int	ndp_pos2idx (ndp_axes *axes, int vdim, int pos, int *idx)
	Converts integer position to array of per-axis indices.

Detailed Description

Helper functions that help inspect and debug ndpolator structures.

These functions are used to validate and inspect ndpolator structures.

Function Documentation

ndp_table_print()

void ndp_table_print

(

ndp_table *

table

)

Prints ndp_table information.

Parameters

table

ndp_table instance to print

Prints basic information about the ndp_table instance, including vertex (function value) dimension, number of axes, axis lengths, number of basic vertices, and number of undefined vertices.

ndp_hypercube_print()

void ndp_hypercube_print	(	ndp_hypercube *	hc,
		const char *	prefix )

Prints ndp_hypercube information for debugging.

Parameters

hc	ndp_hypercube instance to print
prefix	String to prefix each printed line with (can be NULL)

Prints basic information about the ndp_hypercube instance, including dimension, vertex dimension (function value length), whether the hypercube is fully defined, and all vertex function values.

ndp_idx2pos()

int ndp_idx2pos ( ndp_axes * axes, int vdim, int * index, int * pos )

extern

Converts array of indices to integer position in flattened array.

Parameters

	axes	ndp_axes structure with all axis definitions
	vdim	Vertex dimension (function value length)
	index	Array of per-axis indices
[out]	pos	Integer position in the flattened array

Returns

ndp_status code

For efficiency, all ndpolator arrays are flattened (1-dimensional), where axes are stacked in the usual C order (last axis runs first, i.e. last dimension is stride-1). Referring to grid elements can be done either by position in the 1-dimensional array, or per-axis indices. This function converts index representation to position.

ndp_pos2idx()

int ndp_pos2idx ( ndp_axes * axes, int vdim, int pos, int * idx )

extern

Converts integer position to array of per-axis indices.

Parameters

	axes	ndp_axes structure with all axis definitions
	vdim	Function value length (number of values per grid point)
	pos	Integer position in flattened array
[out]	idx	Array of per-axis indices (must be pre-allocated)

Returns

ndp_status code

For efficiency, all ndpolator arrays are flattened (1-dimensional), where axes are stacked in the usual C order (last axis runs first, i.e. last dimension is stride-1). Referring to grid elements can be done either by position in the 1-dimensional array, or per-axis indices. This function converts position representation to index.