dspt013

!>
!> DSPT01 reconstructs a symmetric indefinite packed matrix A from its
!> block L*D*L' or U*D*U' factorization and computes the residual
!>      norm( C - A ) / ( N * norm(A) * EPS ),
!> where C is the reconstructed matrix and EPS is the machine epsilon.
!> 

UPLO

!>          UPLO is CHARACTER*1
!>          Specifies whether the upper or lower triangular part of the
!>          symmetric matrix A is stored:
!>          = 'U':  Upper triangular
!>          = 'L':  Lower triangular
!> 

N

!>          N is INTEGER
!>          The number of rows and columns of the matrix A.  N >= 0.
!> 

A

!>          A is DOUBLE PRECISION array, dimension (N*(N+1)/2)
!>          The original symmetric matrix A, stored as a packed
!>          triangular matrix.
!> 

AFAC

!>          AFAC is DOUBLE PRECISION array, dimension (N*(N+1)/2)
!>          The factored form of the matrix A, stored as a packed
!>          triangular matrix.  AFAC contains the block diagonal matrix D
!>          and the multipliers used to obtain the factor L or U from the
!>          block L*D*L' or U*D*U' factorization as computed by DSPTRF.
!> 

IPIV

!>          IPIV is INTEGER array, dimension (N)
!>          The pivot indices from DSPTRF.
!> 

C

!>          C is DOUBLE PRECISION array, dimension (LDC,N)
!> 

LDC

!>          LDC is INTEGER
!>          The leading dimension of the array C.  LDC >= max(1,N).
!> 

RWORK

!>          RWORK is DOUBLE PRECISION array, dimension (N)
!> 

RESID

!>          RESID is DOUBLE PRECISION
!>          If UPLO = 'L', norm(L*D*L' - A) / ( N * norm(A) * EPS )
!>          If UPLO = 'U', norm(U*D*U' - A) / ( N * norm(A) * EPS )
!> 

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