SRC/cpocon.f(3)            Library Functions Manual            SRC/cpocon.f(3)

NAME
       SRC/cpocon.f

SYNOPSIS
   Functions/Subroutines
       subroutine cpocon (uplo, n, a, lda, anorm, rcond, work, rwork, info)
           CPOCON

Function/Subroutine Documentation
   subroutine cpocon (character uplo, integer n, complex, dimension( lda, * )
       a, integer lda, real anorm, real rcond, complex, dimension( * ) work,
       real, dimension( * ) rwork, integer info)
       CPOCON

       Purpose:


           !>
           !> CPOCON estimates the reciprocal of the condition number (in the
           !> 1-norm) of a complex Hermitian positive definite matrix using the
           !> Cholesky factorization A = U**H*U or A = L*L**H computed by CPOTRF.
           !>
           !> An estimate is obtained for norm(inv(A)), and the reciprocal of the
           !> condition number is computed as RCOND = 1 / (ANORM * norm(inv(A))).
           !>

       Parameters
           UPLO

           !>          UPLO is CHARACTER*1
           !>          = 'U':  Upper triangle of A is stored;
           !>          = 'L':  Lower triangle of A is stored.
           !>

           N

           !>          N is INTEGER
           !>          The order of the matrix A.  N >= 0.
           !>

           A

           !>          A is COMPLEX array, dimension (LDA,N)
           !>          The triangular factor U or L from the Cholesky factorization
           !>          A = U**H*U or A = L*L**H, as computed by CPOTRF.
           !>

           LDA

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

           ANORM

           !>          ANORM is REAL
           !>          The 1-norm (or infinity-norm) of the Hermitian matrix A.
           !>

           RCOND

           !>          RCOND is REAL
           !>          The reciprocal of the condition number of the matrix A,
           !>          computed as RCOND = 1/(ANORM * AINVNM), where AINVNM is an
           !>          estimate of the 1-norm of inv(A) computed in this routine.
           !>

           WORK

           !>          WORK is COMPLEX array, dimension (2*N)
           !>

           RWORK

           !>          RWORK is REAL array, dimension (N)
           !>

           INFO

           !>          INFO is INTEGER
           !>          = 0:  successful exit
           !>          < 0:  if INFO = -i, the i-th argument had an illegal value
           !>

       Author
           Univ. of Tennessee


           Univ. of California Berkeley


           Univ. of Colorado Denver


           NAG Ltd.

       Definition at line 119 of file cpocon.f.

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

LAPACK                          Version 3.12.0                 SRC/cpocon.f(3)