PCMGMatResidualDefault#
Default routine to calculate the residual.
Synopsis#
#include "petscksp.h" 
PetscErrorCode PCMGMatResidualDefault(Mat mat, Mat b, Mat x, Mat r)
Collective
Input Parameters#
- mat - the matrix 
- b - the right-hand side 
- x - the approximate solution 
Output Parameter#
- r - location to store the residual 
See Also#
KSP: Linear System Solvers, PCMG, PCMGSetMatResidual(), PCMGResidualDefault()
Level#
developer
Location#
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages