ADAS Subroutine matinl

      SUBROUTINE MATINL(A,N,B,M,DETERM)
       IMPLICIT REAL*8(A-H,O-Z)
C-----------------------------------------------------------------------
C     PURPOSE: MATRIX INVERSION WITH ACCOMPANYING SOLUTION
C              OF LINEAR EQUATIONS
C
C VERSION  : 1.1
C DATE     : 18-03-1999
C MODIFIED : ???
C
C VERSION  : 1.2
C DATE     : 16-05-2007
C MODIFIED : Allan Whiteford
C             - Updated comments as part of subroutine documentation
C               procedure.
C
C----------------------------------------------------------------------
      INTEGER             M,           N
      REAL*8              A(160,160),  B(160),      DETERM