TESTING/LIN/cpot01.f(3)    Library Functions Manual    TESTING/LIN/cpot01.f(3)

NAME
       TESTING/LIN/cpot01.f

SYNOPSIS
   Functions/Subroutines
       subroutine cpot01 (uplo, n, a, lda, afac, ldafac, rwork, resid)
           CPOT01

Function/Subroutine Documentation
   subroutine cpot01 (character uplo, integer n, complex, dimension( lda, * )
       a, integer lda, complex, dimension( ldafac, * ) afac, integer ldafac,
       real, dimension( * ) rwork, real resid)
       CPOT01

       Purpose:


            CPOT01 reconstructs a Hermitian positive definite matrix  A  from
            its L*L' or U'*U factorization and computes the residual
               norm( L*L' - A ) / ( N * norm(A) * EPS ) or
               norm( U'*U - A ) / ( N * norm(A) * EPS ),
            where 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)
                     On entry, the factor L or U from the L * L**H or U**H * U
                     factorization of A.
                     Overwritten with the reconstructed matrix, and then with
                     the difference L * L**H - A (or U**H * U - A).

           LDAFAC

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

           RWORK

                     RWORK is REAL array, dimension (N)

           RESID

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

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Definition at line 105 of file cpot01.f.

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

LAPACK                          Version 3.12.0         TESTING/LIN/cpot01.f(3)