PETSc version 3.16.6
MatGetColumnNorms
Gets the norms of each column of a sparse or dense matrix.
Synopsis
#include "petscmat.h"
PetscErrorCode MatGetColumnNorms(Mat A,NormType type,PetscReal norms[])
Input Parameters
Output Parameter
| norms | - an array as large as the TOTAL number of columns in the matrix
|
Notes
Each process has ALL the column norms after the call. Because of the way this is computed each process gets all the values,
if each process wants only some of the values it should extract the ones it wants from the array.
See Also
NormType, MatNorm()
Level
intermediate
Location
src/mat/utils/getcolv.c
Examples
src/mat/tutorials/ex10.c.html
Index of all Mat routines
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