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SUBROUTINE RSUM

PURPOSE
   SUM ELEMENTS OF EACH ROW TO FORM COLUMN VECTOR

USAGE
   CALL RSUM (A,R,N,M,MS)

DESCRIPTION OF PARAMETERS
   A - NAME OF INPUT MATRIX
   R - NAME OF VECTOR OF LENGTH N
   N - NUMBER OF ROWS IN A
   M - NUMBER OF COLUMNS IN A
   MS  - ONE DIGIT NUMBER FOR STORAGE MODE OF MATRIX A
	  0 - GENERAL
	  1 - SYMMETRIC
	  2 - DIAGONAL

REMARKS
   VECTOR R CANNOT BE IN THE SAME LOCATION AS MATRIX A
   UNLESS A IS GENERAL

SUBROUTINES AND FUNCTION SUBPROGRAMS REQUIRED
   LOC

METHOD
   ELEMENTS ARE SUMMED ACROSS EACH ROW INTO A CORRESPONDING
   ELEMENT OF OUTPUT COLUMN VECTOR R