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SGBDI(3F)							     SGBDI(3F)

NAME
     SGBDI   - SGBDI computes the determinant of a band matrix using the
     factors computed by SBGCO or SGBFA.  If the inverse is needed, use SGBSL
     N	times.

SYNOPSYS
      SUBROUTINE SGBDI(ABD,LDA,N,ML,MU,IPVT,DET)

DESCRIPTION
     On Entry

     ABD REAL(LDA, N)
	the output from SBGCO or SGBFA.

     LDA INTEGER
	the leading dimension of the array  ABD .

     N INTEGER
	the order of the original matrix.

     ML INTEGER
	number of diagonals below the main diagonal.

     MU INTEGER
	number of diagonals above the main diagonal.

     IPVT INTEGER(N)
	the pivot vector from SBGCO or SGBFA.  On Return

     DET REAL(2)
	determinant of original matrix.
	Determinant = DET(1) * 10.0**DET(2)
	with  1.0 .LE. ABS(DET(1)) .LT. 10.0
	or  DET(1) = 0.0 .  LINPACK.  This version dated 08/14/78 .  Cleve
     Moler, University of New Mexico, Argonne National Lab.  Subroutines and
     Functions Fortran ABS

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