SUBROUTINE MSUB (NA,NB,NC,M,N,A,B,C) C C *****PARAMETERS: INTEGER NA,NB,NC,M,N DOUBLE PRECISION A(NA,N),B(NB,N),C(NC,N) C C *****LOCAL VARIABLES: INTEGER I,J C C *****SUBROUTINES CALLED: C NONE C C ------------------------------------------------------------------ C C *****PURPOSE: C THIS SUBROUTINE COMPUTES THE MATRIX DIFFERENCE A-B AND STORES C THE RESULT IN THE ARRAY C. ALL MATRICES ARE M X N. THE C DIFFERENCE MAY BE OVERWRITTEN INTO A BY DESIGNATING THE C ARRAY C TO BE A. C C *****PARAMETER DESCRIPTION: C ON INPUT: C NA,NB,NC ROW DIMENSIONS OF THE ARRAYS CONTAINING A,B, C AND C, RESPECTIVELY, AS DECLARED IN THE C CALLING PROGRAM DIMENSION STATEMENT; C C M NUMBER OF ROWS OF THE MATRICES A,B, AND C; C C N NUMBER OF COLUMNS OF THE MATRICES A,B, AND C; C C A AN M X N MATRIX; C C B AN M X N MATRIX. C C ON OUTPUT: C C C AN M X N ARRAY CONTAINING A-B. C C *****HISTORY: C WRITTEN BY ALAN J. LAUB (ELEC. SYS. LAB., M.I.T., RM. 35-331, C CAMBRIDGE, MA 02139, PH.: (617)-253-2125), SEPTEMBER 1977. C MOST RECENT VERSION: SEP. 21, 1977. C C ------------------------------------------------------------------ C DO 20 J=1,N DO 10 I=1,M C(I,J)=A(I,J)-B(I,J) 10 CONTINUE 20 CONTINUE RETURN C C LAST LINE OF MSUB C END