Computation time

[daveduke777]

Hello. Thank you for this library. It is quite easy to use.
Your benchmarks shows that it takes 0.2sec to access spline 10^7 times.
But it takes 100 seconds in my case. I build a spline and include it as a member to my class.
Then in another method I access this spline about 10^7 times.
Please suggest an algorithm optimization.

[rob-p]

The time required to access the spline depends on the # of points that have been interpolated. How many control points are in the spline you're accessing? (Note: despite this, the 3-4 order of magnitude difference is still very surprising).

[ttk592]

Could you provide a small working example? What output do you get when running examples/bench with the same number of grid points as in your project?