petsc-3.8.4 2018-03-24
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PCMGGetRestriction

 Gets the function to be used to restrict vector from level l to l-1.

Synopsis

#include "petscksp.h" 
PetscErrorCode  PCMGGetRestriction(PC pc,PetscInt l,Mat *mat)
Logically Collective on PC and Mat

Input Parameters

pc - the multigrid context
l - the level (0 is coarsest) to supply [Do not supply 0]

Output Parameter

mat -the restriction matrix

Keywords

MG, get, multigrid, restriction, level

See Also

PCMGGetInterpolation(), PCMGSetRestriction(), PCMGGetRScale()

Level:advanced
Location:src/ksp/pc/impls/mg/mgfunc.c
Index of all PCMG routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/snes/examples/tutorials/ex12.c.html