PETSc version 3.15.5
PCMGMatResidualDefault
Default routine to calculate the residual. 
Synopsis
#include "petscksp.h" 
PetscErrorCode  PCMGMatResidualDefault(Mat mat,Mat b,Mat x,Mat r)
Collective on Mat
Input Parameters
|  | mat | - the matrix | 
|  | b | - the right-hand-side | 
|  | x | - the approximate solution | 
Output Parameter
|  | r | - location to store the residual | 
See Also
 PCMGSetMatResidual()
Level
developer
Location
src/ksp/pc/impls/mg/mgfunc.c
Index of all PC routines
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Index of all manual pages