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A set of subroutines is described for combining pmrs of sparse matrices in special cases m which one of the matrices may be regarded as full, and/or a vector, and/or an elementary matrLx. Tests show that in many cases the new routines are faster than an earlier set of more general-purpose routines. Also, a new (faster) routine is given for multiplying twoâ€¦ (More)

DESCRIPTION Eight FORTRAN subroutines are presented for multiplying and adding pairs of sparse matrices in special cases, that is, in which one of the pair is full and/or a vector or an elementary matrix. Also, a new subroutine for multiplication of two sparse matrices is presented. A detailed description of the individual subroutines and input thereto isâ€¦ (More)

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