PetscDTLegendreEval

evaluate Legendre polynomials at points

Synopsis

#include "petscdt.h" 
PetscErrorCode PetscDTLegendreEval(PetscInt npoints, const PetscReal *points, PetscInt ndegree, const PetscInt *degrees, PeOp PetscReal B[], PeOp PetscReal D[], PeOp PetscReal D2[])

Not Collective

Input Parameters

• npoints - number of spatial points to evaluate at

• points - array of locations to evaluate at

• ndegree - number of basis degrees to evaluate

• degrees - sorted array of degrees to evaluate

Output Parameters

• B - row-oriented basis evaluation matrix B[pointndegree + degree] (dimension npointsndegrees, allocated by caller) (or NULL)

• D - row-oriented derivative evaluation matrix (or NULL)

• D2 - row-oriented second derivative evaluation matrix (or NULL)

See Also

PetscDTGaussQuadrature()

Level

intermediate

Location

src/dm/dt/interface/dt.c

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Index of all DT routines
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Index of all manual pages