Hello,
I need to calculate an integral of the following type:
\int f(x)*B(i,k)(x) dx,
where B(i,k) is a basis spline of the degree k with a De Boor point i.
I took a look at gls numerical integration functions, and I've already
used the gsl basis splines. But I have no idea, if the construction of
the above-mentioned integral is possible with the gsl functions.
The computation of the b-spline functions requires a
gsl_bspline_workspace. I know, that it is possible to calculate the
values of all allocated b-splines at the point x with the function
gsl_bspline_eval, but is there some way to extract the i-th b-spline as
a function from the bspline_workspace, so that I could use it for the
integration?
Could somebody please help me with this problem?
Yours faithfully,
Iryna.
