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
Input Parameter#
mat - the matrix
Output Parameters#
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#
Matrices, Mat, MatGetDiagonal(), MatCreateSubMatrices(), MatCreateSubMatrix(), MatGetRowMaxAbs(), MatGetRowMin(), MatGetRowMinAbs()
Level#
intermediate
Location#
Implementations#
MatGetRowMax_MPIAIJ in src/mat/impls/aij/mpi/mpiaij.c
MatGetRowMax_SeqAIJ in src/mat/impls/aij/seq/aij.c
MatGetRowMax_SeqDense in src/mat/impls/dense/seq/dense.c
Index of all Mat routines
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Index of all manual pages