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double | sgpp::combigrid::expUniformNakBspline (double const &x, size_t const °ree, size_t i, std::vector< double > const &points) |
| Nodal Not-a-Knot B spline basis always constant on level 0 degree 1 : hats from level 1 onwards degree 3 : polynomials on level 1, Not-a-Knot B-splines from level 2 onwards degree 5 : polynomials on level 1,2, Not-a-KNot B-Splines from level 3 onwards. More...
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double | sgpp::combigrid::LagrangePolynomial (double const &x, std::vector< double > const &xValues, size_t const &k) |
| evaluates the Lagrange polynomial given by its index and the knot sequence it is defined on in x More...
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size_t | sgpp::combigrid::log2 (size_t n) |
| log 2 for size_t types More...
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double | sgpp::combigrid::nonUniformBSpline (double const &x, size_t const °, size_t const &index, std::vector< double > const &xi) |
| evaluates a Bspline given by its degree, index and the knot sequence it is defined on in x More...
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