petsc-3.8.4 2018-03-24
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PetscDTReconstructPoly

 create matrix representing polynomial reconstruction using cell intervals and evaluation at target intervals

Synopsis

#include "petscdt.h" 
PetscErrorCode PetscDTReconstructPoly(PetscInt degree,PetscInt nsource,const PetscReal *sourcex,PetscInt ntarget,const PetscReal *targetx,PetscReal *R)
Not Collective

Input Arguments

degree - degree of reconstruction polynomial
nsource - number of source intervals
sourcex - sorted coordinates of source cell boundaries (length nsource+1)
ntarget - number of target intervals
targetx - sorted coordinates of target cell boundaries (length ntarget+1)

Output Arguments

R -reconstruction matrix, utarget = sum_s R[t*nsource+s] * usource[s]

See Also

PetscDTLegendreEval()

Level:advanced
Location:src/dm/dt/interface/dt.c
Index of all DT routines
Table of Contents for all manual pages
Index of all manual pages