File: RINT.FT of Tape: Various/ETH/eth11-1
(Source file text)
C .................................................................. C C SUBROUTINE RINT C C PURPOSE C INTERCHANGE TWO ROWS OF A MATRIX C C USAGE C CALL RINT(A,N,M,LA,LB) C C DESCRIPTION OF PARAMETERS C A - NAME OF MATRIX C N - NUMBER OF ROWS IN A C M - NUMBER OF COLUMNS IN A C LA - ROW TO BE INTERCHANGED WITH ROW LB C LB - ROW TO BE INTERCHANGED WITH ROW LA C C REMARKS C MATRIX A MUST BE A GENERAL MATRIX C C SUBROUTINES AND FUNCTION SUBPROGRAMS REQUIRED C NONE C C METHOD C EACH ELEMENT OF ROW LA IS INTERCHANGED WITH CORRESPONDING C ELEMENT OF ROW LB C C .................................................................. C SUBROUTINE RINT(A,N,M,LA,LB) DIMENSION A(1) C LAJ=LA-N LBJ=LB-N DO 3 J=1,M C C LOCATE ELEMENTS IN BOTH ROWS C LAJ=LAJ+N LBJ=LBJ+N C C INTERCHANGE ELEMENTS C SAVE=A(LAJ) A(LAJ)=A(LBJ) 3 A(LBJ)=SAVE RETURN END C