cspline_interp Class Template Reference

#include <interp.h>

Inheritance diagram for cspline_interp:

base_interp

Detailed Description

template<class vec_t>
class cspline_interp< vec_t >

Cubic spline interpolation (GSL).

Definition at line 254 of file interp.h.


Public Member Functions

 cspline_interp (bool periodic=false)
 Create a base interpolation object with natural or periodic boundary conditions.
virtual ~cspline_interp ()
virtual int alloc (size_t size)
 Allocate memory, assuming x and y have size size.
virtual int init (const vec_t &xa, const vec_t &ya, size_t size)
 Initialize interpolation routine.
virtual int free ()
 Free allocated memory.
virtual int interp (const vec_t &x_array, const vec_t &y_array, size_t size, double x, double &y)
 Give the value of the function $ y(x=x_0) $ .
virtual int deriv (const vec_t &x_array, const vec_t &y_array, size_t size, double x, double &dydx)
 Give the value of the derivative $ y^{\prime}(x=x_0) $ .
virtual int deriv2 (const vec_t &x_array, const vec_t &y_array, size_t size, double x, double &d2ydx2)
 Give the value of the second derivative $ y^{\prime \prime}(x=x_0) $ .
virtual int integ (const vec_t &x_array, const vec_t &y_array, size_t size, double a, double b, double &result)
 Give the value of the integral $ \int_a^{b}y(x)~dx $ .

Protected Member Functions

void coeff_calc (const double c_array[], double dy, double dx, size_t index, double *b, double *c2, double *d)
 Compute coefficients for cubic spline interpolation.
double integ_eval (double ai, double bi, double ci, double di, double xi, double a, double b)
 An internal function to assist in computing the integral.

Protected Attributes

bool peri
 True for periodic boundary conditions.
Storage for cubic spline interpolation
double * c
double * g
double * diag
double * offdiag

Member Function Documentation

virtual int init ( const vec_t &  xa,
const vec_t &  ya,
size_t  size 
) [inline, virtual]

Initialize interpolation routine.

Periodic boundary conditions

Natural boundary conditions

Reimplemented from base_interp.

Definition at line 339 of file interp.h.


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

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