petsc-3.5.2 2014-09-08
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MatResidual

Default routine to calculate the residual.

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatResidual(Mat mat,Vec b,Vec x,Vec r)
Collective on Mat and Vec

Input Parameters

mat - the matrix
b - the right-hand-side
x - the approximate solution

Output Parameter

r -location to store the residual

Keywords

MG, default, multigrid, 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