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.