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1. ###Could I improve the design of the class someway?
2. ###Is there any better way to do the calculation in order to minimize the rounding errors?

1. Could I improve the design of the class someway?

2. Is there any better way to do the calculation in order to minimize the rounding errors?

I have to write a collection of methods for performing linear, bilinear and trilinear interpolation. I have also to write some tests to show that interpolation is exact fot polynomials (which should be the case using these interpolation methods).

I have to write a collection of methods for performing linear, bilinear and trilinear interpolation. I have also to write some tests to show that interpolation is exact for polynomials (which should be the case using these interpolation methods).

Thanks folks!