Basix
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Indexing. More...
Functions | |
constexpr int | idx (int p) |
Compute trivial indexing in a 1D array (for completeness). | |
constexpr int | idx (int p, int q) |
constexpr int | idx (int p, int q, int r) |
Compute indexing in a 3D tetrahedral array compressed into a 1D array. | |
Indexing.
Compute trivial indexing in a 1D array (for completeness).
p | Index in x |
Compute indexing in a 2D triangular array compressed into a 1D array. This can be used to find the index of a derivative returned by FiniteElement::tabulate(). For instance to find d2N/dx2, use FiniteElement::tabulate(2, points)[idx(2, 0)];
p | Index in x |
q | Index in y |