petsc-3.11.4 2019-09-28

PetscGLL

the locations, from [-1,1] and weights of the Gauss-Lobatto-Legendre nodes of a given size

typedef struct {
  PetscInt  n;
  PetscReal *nodes;
  PetscReal *weights;
} PetscGLL;

These values are usful in implementing spectral methods based on the Gauss-Lobatto-Legendre nodes

The array nodes[] contains the vertices of each node The array weights[] are the integration weights

The mass matrix for the element corresponds to the diagonal matrix whose entries are the weights[]

This may eventually get merged into a more abstract or general object for managing integration schemes or discretization schemes.

References: XXXX

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