petsc-3.15.0 2021-03-30
MatGetRowMaxAbs
Gets the maximum value (in absolute value) of each row of the matrix
Synopsis
#include "petscmat.h"
PetscErrorCode MatGetRowMaxAbs(Mat mat,Vec v,PetscInt idx[])
Logically Collective on Mat
Input Parameters
Output Parameter
| v | - the vector for storing the maximums
|
| idx | - the indices of the column found for each row (or NULL if not needed)
|
Notes
if a row is completely empty or has only 0.0 values then the idx[] value for that
row is 0 (the first column).
This code is only implemented for a couple of matrix formats.
See Also
MatGetDiagonal(), MatCreateSubMatrices(), MatCreateSubMatrix(), MatGetRowMax(), MatGetRowMin()
Level
intermediate
Location
src/mat/interface/matrix.c
Examples
src/ksp/ksp/tutorials/ex72.c.html
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages