TESTING/LIN/chet01.f(3)    Library Functions Manual    TESTING/LIN/chet01.f(3)

NAME
       TESTING/LIN/chet01.f

SYNOPSIS
   Functions/Subroutines
       subroutine chet01 (uplo, n, a, lda, afac, ldafac, ipiv, c, ldc, rwork,
           resid)
           CHET01

Function/Subroutine Documentation
   subroutine chet01 (character uplo, integer n, complex, dimension( lda, * )
       a, integer lda, complex, dimension( ldafac, * ) afac, integer ldafac,
       integer, dimension( * ) ipiv, complex, dimension( ldc, * ) c, integer
       ldc, real, dimension( * ) rwork, real resid)
       CHET01

       Purpose:


            CHET01 reconstructs a Hermitian indefinite 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, EPS is the machine epsilon,
            L' is the conjugate transpose of L, and U' is the conjugate transpose
            of U.

       Parameters
           UPLO

                     UPLO is CHARACTER*1
                     Specifies whether the upper or lower triangular part of the
                     Hermitian 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 COMPLEX array, dimension (LDA,N)
                     The original Hermitian matrix A.

           LDA

                     LDA is INTEGER
                     The leading dimension of the array A.  LDA >= max(1,N)

           AFAC

                     AFAC is COMPLEX array, dimension (LDAFAC,N)
                     The factored form of the matrix A.  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 CHETRF.

           LDAFAC

                     LDAFAC is INTEGER
                     The leading dimension of the array AFAC.  LDAFAC >= max(1,N).

           IPIV

                     IPIV is INTEGER array, dimension (N)
                     The pivot indices from CHETRF.

           C

                     C is COMPLEX array, dimension (LDC,N)

           LDC

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

           RWORK

                     RWORK is REAL array, dimension (N)

           RESID

                     RESID is REAL
                     If UPLO = 'L', norm(L*D*L' - A) / ( N * norm(A) * EPS )
                     If UPLO = 'U', norm(U*D*U' - A) / ( N * norm(A) * EPS )

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Definition at line 124 of file chet01.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

LAPACK                          Version 3.12.0         TESTING/LIN/chet01.f(3)