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SPBDI

       SUBROUTINE SPBDI(ABD,LDA,N,M,DET)
       INTEGER LDA,N,M
       REAL ABD(LDA,1)
       REAL DET(2)
 C
 C     SPBDI COMPUTES THE DETERMINANT
 C     OF A REAL SYMMETRIC POSITIVE DEFINITE BAND MATRIX
 C     USING THE FACTORS COMPUTED BY SPBCO OR SPBFA.
 C     IF THE INVERSE IS NEEDED, USE SPBSL  N  TIMES.
 C
 C     ON ENTRY
 C
 C        ABD     REAL(LDA, N)
 C                THE OUTPUT FROM SPBCO OR SPBFA.
 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     REAL(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
 C     SUBROUTINES AND FUNCTIONS
 C
 C