petsc-3.6.1 2015-08-06
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MatIsSymmetric

 Test whether a matrix is symmetric

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatIsSymmetric(Mat A,PetscReal tol,PetscBool  *flg)
Collective on Mat

Input Parameter

A - the matrix to test
tol - difference between value and its transpose less than this amount counts as equal (use 0.0 for exact transpose)

Output Parameters

flg -the result

Notes: For real numbers MatIsSymmetric() and MatIsHermitian() return identical results

See Also

MatTranspose(), MatIsTranspose(), MatIsHermitian(), MatIsStructurallySymmetric(), MatSetOption(), MatIsSymmetricKnown()

Level:intermediate
Location:src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages