PetscDTJacobiEval

evaluate Jacobi polynomials for the weight function \((1.+x)^{\alpha} (1.-x)^{\beta}\) at a set of points at points

Synopsis

#include "petscdt.h" 
PetscErrorCode PetscDTJacobiEval(PetscInt npoints, PetscReal alpha, PetscReal beta, const PetscReal *points, PetscInt ndegree, const PetscInt *degrees, PetscReal *B, PetscReal *D, PetscReal *D2)

Not Collective

Input Parameters

• npoints - number of spatial points to evaluate at

• alpha - the left exponent > -1

• beta - the right exponent > -1

• 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(), PetscDTLegendreEval()

Level

intermediate

Location

src/dm/dt/interface/dt.c

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Index of all manual pages