Data Structures
struct	mirml_nr_itpl_t_
	Interpolation structure. More...

Typedefs
typedef struct mirml_nr_itpl_t_	mirml_nr_itpl_t
	Interpolation structure.

Functions
mirkl_error_t *	mirml_nr_itpl_init_cspline (mirml_nr_itpl_t itpl, double x, double y, double y2, int n, double yp1, double ypn)
	Initialization of cubic spline interpolation.

void	mirml_nr_itpl_free_cspline (mirml_nr_itpl_t *itpl)
	Free resources, which were possibly allocated for cubic spline interpolation.

mirkl_error_t *	mirml_nr_itpl_cspline (mirml_nr_itpl_t itpl, double x, double y)
	Interpolation using cubic spline.

Detailed Description

Function Documentation

mirkl_error_t * mirml_nr_itpl_cspline	(	mirml_nr_itpl_t *	itpl,
		double	x,
		double *	y
	)

Interpolation using cubic spline.

Parameters

[in]	itpl	Pointer to interpolation structure.
[in]	x	Value of argument, in which interpolation should be calculated.
[out]	y	Calculated interpolated value on output.

Note: Before calling this function the itpl structure should be initialized using mirml_nr_itpl_init_cspline().

void mirml_nr_itpl_free_cspline ( mirml_nr_itpl_t * itpl )

Free resources, which were possibly allocated for cubic spline interpolation.

Note: mirml_nr_itpl_init_cspline can allocated memory internally if its y2 argument was NULL.

mirkl_error_t * mirml_nr_itpl_init_cspline	(	mirml_nr_itpl_t *	itpl,
		double *	x,
		double *	y,
		double *	y2,
		int	n,
		double	yp1,
		double	ypn
	)

Initialization of cubic spline interpolation.

Parameters

[in]	itpl	Pointer to interpolation structure.
[in]	x	Array of argument values.
[in]	y	Array of function values.
[in]	y2	Preallocated array for second derivatives. The function can automatically allocate the required memory for these values if this argument is NULL.
[in]	n	Number of values in x, y and y2 (if y2 is not NULL).
[in]	yp1,ypn	First derivatives of the tabulated function in the first and last points, respectively. If yp1 and/or ypn are equal to 1.0e99 or larger, the routine is signaled to set the corresponding boundary condition for a natural spline, with zero second derivative on that boundary.