PETSc version 3.17.5
Fix/Edit manual page

MatGetColumnSumsRealPart

 Gets the sums of the real part of each column of a sparse or dense matrix.

Synopsis

#include "petscmat.h"  
PetscErrorCode MatGetColumnSumsRealPart(Mat A,PetscReal sums[])

Input Parameter

A - the matrix

Output Parameter

sums - an array as large as the TOTAL number of columns in the matrix

Notes

Each process has ALL the column sums after the call. Because of the way this is computed each process gets all the values, if each process wants only some of the values it should extract the ones it wants from the array.

See Also

MatGetColumnSumsImaginaryPart(), VecSum(), MatGetColumnMeans(), MatGetColumnNorms(), MatGetColumnReductions()

Level

intermediate

Location

src/mat/utils/getcolv.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages