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
Input Parameter#
mat - the matrix
Output Parameters#
v - the vector for storing the maximums
idx - the indices of the column found for each row (or
NULLif 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#
Matrices, Mat, MatGetDiagonal(), MatCreateSubMatrices(), MatCreateSubMatrix(), MatGetRowSum(), MatGetRowMin(), MatGetRowMinAbs()
Level#
intermediate
Location#
Examples#
Implementations#
MatGetRowMaxAbs_MPIAIJ() in src/mat/impls/aij/mpi/mpiaij.c
MatGetRowMaxAbs_SeqAIJ() in src/mat/impls/aij/seq/aij.c
MatGetRowMaxAbs_MPIBAIJ() in src/mat/impls/baij/mpi/mpibaij.c
MatGetRowMaxAbs_SeqBAIJ() in src/mat/impls/baij/seq/baij.c
MatGetRowMaxAbs_SeqDense() in src/mat/impls/dense/seq/dense.c
MatGetRowMaxAbs_MPISBAIJ() in src/mat/impls/sbaij/mpi/mpisbaij.c
MatGetRowMaxAbs_SeqSBAIJ() in src/mat/impls/sbaij/seq/sbaij2.c
Index of all Mat routines
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Index of all manual pages