SPBDI(3F)							     SPBDI(3F)

NAME    [Toc]    [Back]

     SPBDI   - SPBDI computes the determinant of a real	symmetric positive
     definite band matrix using	the factors computed by	SPBCO or SPBFA.	 If
     the inverse is needed, use	SPBSL  N  times.

SYNOPSYS    [Toc]    [Back]

      SUBROUTINE SPBDI(ABD,LDA,N,M,DET)

DESCRIPTION    [Toc]    [Back]

     On	Entry

     ABD REAL(LDA, N)
	the output from	SPBCO or SPBFA.

     LDA INTEGER
	the leading dimension of the array  ABD	.

     N INTEGER
	the order of the matrix	 A .

     M INTEGER
	the number of diagonals	above the main diagonal.  On Return

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


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