PETSc version 3.15.5
MatResidual
Default routine to calculate the residual. 
Synopsis
#include "petscmat.h" 
PetscErrorCode MatResidual(Mat mat,Vec b,Vec x,Vec 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
 PCMGSetResidual()
Level
developer
Location
src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages