MatGetRowMinAbs#

Gets the minimum value (in absolute value) of each row of the matrix

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatGetRowMinAbs(Mat mat, Vec v, PetscInt idx[])

Logically Collective

Input Parameter#

  • mat - the matrix

Output Parameters#

  • v - the vector for storing the minimums

  • 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#

Matrices, Mat, MatGetDiagonal(), MatCreateSubMatrices(), MatCreateSubMatrix(), MatGetRowMax(), MatGetRowMaxAbs(), MatGetRowMin()

Level#

intermediate

Location#

src/mat/interface/matrix.c

Examples#

src/ksp/ksp/tutorials/ex72.c

Implementations#

MatGetRowMinAbs_MPIAIJ() in src/mat/impls/aij/mpi/mpiaij.c
MatGetRowMinAbs_SeqAIJ() in src/mat/impls/aij/seq/aij.c

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages