petsc-3.13.6 2020-09-29
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