 
      SUBROUTINE DGBDI(ABD,LDA,N,ML,MU,IPVT,DET)
C***BEGIN PROLOGUE  DGBDI
C***DATE WRITTEN   780814   (YYMMDD)
C***REVISION DATE  820801   (YYMMDD)
C***CATEGORY NO.  D3A2
C***KEYWORDS  BANDED,DETERMINANT,DOUBLE PRECISION,FACTOR,INVERSE,
C             LINEAR ALGEBRA,LINPACK,MATRIX
C***AUTHOR  MOLER, C. B., (U. OF NEW MEXICO)
C***PURPOSE  Computes the determinant of a BAND matrix using factors
C            computed by DGBCO or DGBFA. Use DGBSL N times for the
C            inverse.
C***DESCRIPTION
C
C     DGBDI computes the determinant of a band matrix
C     using the factors computed by DGBCO or DGBFA.
C     If the inverse is needed, use DGBSL  N  times.
C
C     On Entry
C
C        ABD     DOUBLE PRECISION(LDA, N)
C                the output from DGBCO or DGBFA.
C
C        LDA     INTEGER
C                the leading dimension of the array  ABD .
C
C        N       INTEGER
C                the order of the original matrix.
C
C        ML      INTEGER
C                number of diagonals below the main diagonal.
C
C        MU      INTEGER
C                number of diagonals above the main diagonal.
C
C        IPVT    INTEGER(N)
C                the pivot vector from DGBCO or DGBFA.
C
C     On Return
C
C        DET     DOUBLE PRECISION(2)
C                determinant of original matrix.
C                Determinant = DET(1) * 10.0**DET(2)
C                with  1.0 .LE. DABS(DET(1)) .LT. 10.0
C                or  DET(1) = 0.0 .
C
C     LINPACK.  This version dated 08/14/78 .
C     Cleve Moler, University of New Mexico, Argonne National Lab.
C
C     Subroutines and Functions
C
C     Fortran DABS
C***REFERENCES  DONGARRA J.J., BUNCH J.R., MOLER C.B., STEWART G.W.,
C                 *LINPACK USERS  GUIDE*, SIAM, 1979.
C***ROUTINES CALLED  (NONE)
C***END PROLOGUE  DGBDI
 
 
