PetscGaussLobattoLegendreIntegrate#

Compute the L2 integral of a function on the GLL points

Synopsis#

#include "petscdt.h" 
PetscErrorCode PetscGaussLobattoLegendreIntegrate(PetscInt n, PetscReal *nodes, PetscReal *weights, const PetscReal *f, PetscReal *in)

Not Collective

Input Parameters#

  • n - the number of GLL nodes

  • nodes - the GLL nodes

  • weights - the GLL weights

  • f - the function values at the nodes

Output Parameter#

  • in - the value of the integral

See Also#

PetscDTGaussLobattoLegendreQuadrature()

Level#

beginner

Location#

src/dm/dt/interface/dt.c

Examples#

src/ksp/ksp/tutorials/ex68.c
src/ksp/ksp/tutorials/ex69.c

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