MatGetTrace

Gets the trace of a matrix. The sum of the diagonal entries.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatGetTrace(Mat mat, PetscScalar *trace)

Collective

Input Parameter

• mat - the matrix

Output Parameter

• trace - the sum of the diagonal entries

See Also

Matrices, Mat

Level

advanced

Location

src/mat/interface/matrix.c

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Index of all Mat routines
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Index of all manual pages