PetscGaussLobattoLegendreElementLaplacianCreate#

computes the Laplacian for a single 1d GLL element

Synopsis#

Not Collective

Input Parameters#

  • n - the number of GLL nodes

  • nodes - the GLL nodes

  • weights - the GLL weights

Output Parameter#

  • AA - the stiffness element

Notes#

Destroy this with PetscGaussLobattoLegendreElementLaplacianDestroy()

You can access entries in this array with AA[i][j] but in memory it is stored in contiguous memory, row-oriented (the array is symmetric)

See Also#

PetscDTGaussLobattoLegendreQuadrature(), PetscGaussLobattoLegendreElementLaplacianDestroy()

Level#

beginner

Location#

src/dm/dt/interface/dt.c

Examples#

src/tao/unconstrained/tutorials/spectraladjointassimilation.c
src/tao/unconstrained/tutorials/burgers_spectral.c
src/ksp/ksp/tutorials/ex68.c
src/ksp/ksp/tutorials/ex69.c
src/ts/tutorials/ex50.c


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