ADAS Subroutine b4matv

      SUBROUTINE B4MATV(A,N,B,M,DETERM)                                
       IMPLICIT REAL*8 (A-H,O-Z)                                        
C-----------------------------------------------------------------------
C
C  ************** FORTRAN77 SUBROUTINE: B4MATV ************************
C
C  VERSION:  1.0
C
C  PURPOSE:
C     MATRIX INVERSION WITH ACCOMPANYING SOLUTION OF LINEAR EQUATIONS   
C
C  THIS SUBROUTINE IS NOT YET PROPERLY DOCUMENTED
C
C-----------------------------------------------------------------------
C
C UNIX-IDL CONVERSION:
C
C VERSION: 1.1                          DATE: 05-03-98
C MODIFIED: RICHARD MARTIN
C               - RENAMED FROM V2MATIV.FOR V1.1
C
C-----------------------------------------------------------------------
C-----------------------------------------------------------------------
C
      INTEGER             M,           N
      REAL*8              A(NREPDM,NREPDM),         B(NREPDM),   DETERM