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RADD.FOR
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1985-11-29
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60 lines
C
C ..................................................................
C
C SUBROUTINE RADD
C
C PURPOSE
C ADD ROW OF ONE MATRIX TO ROW OF ANOTHER MATRIX
C
C USAGE
C CALL RADD(A,IRA,R,IRR,N,M,MS,L)
C
C DESCRIPTION OF PARAMETERS
C A - NAME OF INPUT MATRIX
C IRA - ROW IN MATRIX A TO BE ADDED TO ROW IRR OF MATRIX R
C R - NAME OF OUTPUT MATRIX
C IRR - ROW IN MATRIX R WHERE SUMMATION IS DEVELOPED
C N - NUMBER OF ROWS IN A
C M - NUMBER OF COLUMNS IN A AND R
C MS - ONE DIGIT NUMBER FOR STORAGE MODE OF MATRIX A
C 0 - GENERAL
C 1 - SYMMETRIC
C 2 - DIAGONAL
C L - NUMBER OF ROWS IN R
C
C REMARKS
C MATRIX R MUST BE A GENERAL MATRIX
C MATRIX R CANNOT BE IN THE SAME LOCATION AS MATRIX A UNLESS
C A IS GENERAL
C
C SUBROUTINES AND FUNCTION SUBPROGRAMS REQUIRED
C LOC
C
C METHOD
C EACH ELEMENT OF ROW IRA OF MATRIX A IS ADDED TO
C CORRESPONDING ELEMENT OF ROW IRR OF MATRIX R
C
C ..................................................................
C
SUBROUTINE RADD(A,IRA,R,IRR,N,M,MS,L)
DIMENSION A(1),R(1)
C
IR=IRR-L
DO 2 J=1,M
IR=IR+L
C
C LOCATE INPUT ELEMENT FOR ANY MATRIX STORAGE MODE
C
CALL LOC(IRA,J,IA,N,M,MS)
C
C TEST FOR ZERO ELEMENT IN DIAGONAL MATRIX
C
IF(IA) 1,2,1
C
C ADD ELEMENTS
C
1 R(IR)=R(IR)+A(IA)
2 CONTINUE
RETURN
END