PETSc version 3.17.5
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MatGetTrace
Gets the trace of a matrix. The sum of the diagonal entries.
Synopsis
#include "petscmat.h"
PetscErrorCode
MatGetTrace
(
Mat
mat,
PetscScalar
*trace)
Collective on
Mat
Input Parameters
mat
- the matrix
Output Parameter
trace
- the sum of the diagonal entries
Level
advanced
Location
src/mat/interface/matrix.c
Index of all Mat routines
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Index of all manual pages