Collecting a Sparse Symmetric Matrix

In the BzzMath library, the BzzMatrixSparseSyinitietricLocked class can be used to collect a sparse symmetric matrix. 

Objects in the BzzMatrixSparseSymmetricLocked class collect the data for a sparse symmetric matrix as follows. 

The BzzVectorInt r, BzzVectorInt c, and BzzVector 1 contain the index row, the index column, and the left-hand side matrix coefficients, respectively. For instance, the matrix 

BzzVector d(5,l.,2.,3.,4.,5.) whereas only the nonzero coefficients are provided for the left matrix. 

Note that data for the left-hand side matrix can be provided without any specific order the only requirement being to preserve the consistency of element positions and the corresponding coefficient values. 

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