petsc-3.5.2 2014-09-08
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PetscDTLegendreEval

evaluate Legendre polynomial at points

Synopsis

#include "petscdt.h" 
PetscErrorCode PetscDTLegendreEval(PetscInt npoints,const PetscReal *points,PetscInt ndegree,const PetscInt *degrees,PetscReal *B,PetscReal *D,PetscReal *D2)
Not Collective

Input Arguments

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 Arguments

B - row-oriented basis evaluation matrix B[point*ndegree + degree] (dimension npoints*ndegrees, 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
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages