 
      SUBROUTINE SGEDI(A,LDA,N,IPVT,DET,WORK,JOB)
C***BEGIN PROLOGUE  SGEDI
C***DATE WRITTEN   780814   (YYMMDD)
C***REVISION DATE  820801   (YYMMDD)
C***CATEGORY NO.  D2A1,D3A1
C***KEYWORDS  DETERMINANT,FACTOR,INVERSE,LINEAR ALGEBRA,LINPACK,MATRIX
C***AUTHOR  MOLER, C. B., (U. OF NEW MEXICO)
C***PURPOSE  Computes the determinant and inverse of a matrix
C            using the factors computed by SGECO or SGEFA.
C***DESCRIPTION
C
C     SGEDI computes the determinant and inverse of a matrix
C     using the factors computed by SGECO or SGEFA.
C
C     On Entry
C
C        A       REAL(LDA, N)
C                the output from SGECO or SGEFA.
C
C        LDA     INTEGER
C                the leading dimension of the array  A .
C
C        N       INTEGER
C                the order of the matrix  A .
C
C        IPVT    INTEGER(N)
C                the pivot vector from SGECO or SGEFA.
C
C        WORK    REAL(N)
C                work vector.  Contents destroyed.
C
C        JOB     INTEGER
C                = 11   both determinant and inverse.
C                = 01   inverse only.
C                = 10   determinant only.
C
C     On Return
C
C        A       inverse of original matrix if requested.
C                Otherwise unchanged.
C
C        DET     REAL(2)
C                determinant of original matrix if requested.
C                Otherwise not referenced.
C                Determinant = DET(1) * 10.0**DET(2)
C                with  1.0 .LE. ABS(DET(1)) .LT. 10.0
C                or  DET(1) .EQ. 0.0 .
C
C     Error Condition
C
C        A division by zero will occur if the input factor contains
C        a zero on the diagonal and the inverse is requested.
C        It will not occur if the subroutines are called correctly
C        and if SGECO has set RCOND .GT. 0.0 or SGEFA has set
C        INFO .EQ. 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     BLAS SAXPY,SSCAL,SSWAP
C     Fortran ABS,MOD
C***REFERENCES  DONGARRA J.J., BUNCH J.R., MOLER C.B., STEWART G.W.,
C                 *LINPACK USERS  GUIDE*, SIAM, 1979.
C***ROUTINES CALLED  SAXPY,SSCAL,SSWAP
C***END PROLOGUE  SGEDI
 
 
