SUBROUTINE DPBDI(ABD,LDA,N,M,DET)
C***BEGIN PROLOGUE  DPBDI
C***DATE WRITTEN   780814   (YYMMDD)
C***REVISION DATE  820801   (YYMMDD)
C***CATEGORY NO.  D3B2
C***KEYWORDS  BANDED,DETERMINANT,DOUBLE PRECISION,FACTOR,INVERSE,
C             LINEAR ALGEBRA,LINPACK,MATRIX,POSITIVE DEFINITE
C***AUTHOR  MOLER, C. B., (U. OF NEW MEXICO)
C***PURPOSE  Computes the determinant of a d.p. SYMMETRIC POSITIVE
C            DEFINITE BAND matrix using factors of DPBCO or DPBFA.
C            Use DPBSL N times for inverse.
C***DESCRIPTION
C
C     DPBDI computes the determinant
C     of a double precision symmetric positive definite band matrix
C     using the factors computed by DPBCO or DPBFA.
C     If the inverse is needed, use DPBSL  N  times.
C
C     On Entry
C
C        ABD     DOUBLE PRECISION(LDA, N)
C                the output from DPBCO or DPBFA.
C
C        LDA     INTEGER
C                the leading dimension of the array  ABD .
C
C        N       INTEGER
C                the order of the matrix  A .
C
C        M       INTEGER
C                the number of diagonals above the main diagonal.
C
C     On Return
C
C        DET     DOUBLE PRECISION(2)
C                determinant of original matrix in the form
C                DETERMINANT = DET(1) * 10.0**DET(2)
C                with  1.0 .LE. DET(1) .LT. 10.0
C                or  DET(1) .EQ. 0.0 .
C
C     LINPACK.  This version dated 08/14/78 .
C     Cleve Moler, University of New Mexico, Argonne National Lab.
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  DPBDI