petsc-3.7.5 2017-01-01
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MatGetRowMax

 Gets the maximum value (of the real part) of each row of the matrix

Synopsis

#include "petscmat.h" 
PetscErrorCode MatGetRowMax(Mat mat,Vec v,PetscInt idx[])
Logically Collective on Mat and Vec

Input Parameters

mat -the matrix

Output Parameter

v - the vector for storing the maximums
idx - the indices of the column found for each row (optional)

Notes: The result of this call are the same as if one converted the matrix to dense format and found the minimum value in each row (i.e. the implicit zeros are counted as zeros).

This code is only implemented for a couple of matrix formats.

See Also

MatGetDiagonal(), MatGetSubMatrices(), MatGetSubmatrix(), MatGetRowMaxAbs(), MatGetRowMin()

Level:intermediate
Location:src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages