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decuslib20-02
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decus/20-0026/rcut.doc
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SUBROUTINE RCUT
PURPOSE
PARTITION A MATRIX BETWEEN SPECIFIED ROWS TO FORM TWO
RESULTANT MATRICES
USAGE
CALL RCUT (A,L,R,S,N,M,MS)
DESCRIPTION OF PARAMETERS
A - NAME OF INPUT MATRIX
L - ROW OF A ABOVE WHICH PARTITIONING TAKES PLACE
R - NAME OF MATRIX TO BE FORMED FROM UPPER PORTION OF A
S - NAME OF MATRIX TO BE FORMED FROM LOWER PORTION OF A
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
MATRIX R CANNOT BE IN SAME LOCATION AS MATRIX A
MATRIX S CANNOT BE IN SAME LOCATION AS MATRIX A
MATRIX R CANNOT BE IN SAME LOCATION AS MATRIX S
MATRIX R AND MATRIX S ARE ALWAYS GENERAL MATRICES
SUBROUTINES AND FUNCTION SUBPROGRAMS REQUIRED
LOC
METHOD
ELEMENTS OF MATRIX A ABOVE ROW L ARE MOVED TO FORM MATRIX R
OF L-1 ROWS AND M COLUMNS. ELEMENTS OF MATRIX A IN ROW L
AND BELOW ARE MOVED TO FORM MATRIX S OF N-L+1 ROWS AND M
COLUMNS