DGBDI man page on IRIX

DGBDI man page on IRIX

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DGBDI(3F)							     DGBDI(3F)

NAME
     DGBDI   - DGBDI computes the determinant of a band matrix using the
     factors computed by DGBCO or DGBFA.  If the inverse is needed, use DGBSL
     N	times.

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

DESCRIPTION
     On Entry

     ABD DOUBLE PRECISION(LDA, N)
	the output from DGBCO or DGBFA.

     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 DGBCO or DGBFA.  On Return

     DET DOUBLE PRECISION(2)
	determinant of original matrix.
	Determinant = DET(1) * 10.0**DET(2)
	with  1.0 .LE. DABS(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 DABS

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