petsc-3.14.6 2021-03-30
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
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| nsource | - number of source intervals
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| sourcex | - sorted coordinates of source cell boundaries (length nsource+1)
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| ntarget | - number of target intervals
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| targetx | - sorted coordinates of target cell boundaries (length ntarget+1)
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Output Arguments
| R | - reconstruction matrix, utarget = sum_s R[t*nsource+s] * usource[s]
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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