.TH ZLANHP l "15 June 2000" "LAPACK version 3.0" ")"
.SH NAME
ZLANHP - return the value of the one norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a complex hermitian matrix A, supplied in packed form
.SH SYNOPSIS
.TP 17
DOUBLE PRECISION
FUNCTION ZLANHP( NORM, UPLO, N, AP, WORK )
.TP 17
.ti +4
CHARACTER
NORM, UPLO
.TP 17
.ti +4
INTEGER
N
.TP 17
.ti +4
DOUBLE
PRECISION WORK( * )
.TP 17
.ti +4
COMPLEX*16
AP( * )
.SH PURPOSE
ZLANHP returns the value of the one norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a complex hermitian matrix A, supplied in packed form. 
.SH DESCRIPTION
ZLANHP returns the value
.br

   ZLANHP = ( max(abs(A(i,j))), NORM = 'M' or 'm'
.br
            (
.br
            ( norm1(A),         NORM = '1', 'O' or 'o'
.br
            (
.br
            ( normI(A),         NORM = 'I' or 'i'
.br
            (
.br
            ( normF(A),         NORM = 'F', 'f', 'E' or 'e'

where  norm1  denotes the  one norm of a matrix (maximum column sum),
normI  denotes the  infinity norm  of a matrix  (maximum row sum) and
normF  denotes the  Frobenius norm of a matrix (square root of sum of
squares).  Note that  max(abs(A(i,j)))  is not a  matrix norm.

.SH ARGUMENTS
.TP 8
NORM    (input) CHARACTER*1
Specifies the value to be returned in ZLANHP as described
above.
.TP 8
UPLO    (input) CHARACTER*1
Specifies whether the upper or lower triangular part of the
hermitian matrix A is supplied.
= 'U':  Upper triangular part of A is supplied
.br
= 'L':  Lower triangular part of A is supplied
.TP 8
N       (input) INTEGER
The order of the matrix A.  N >= 0.  When N = 0, ZLANHP is
set to zero.
.TP 8
AP      (input) COMPLEX*16 array, dimension (N*(N+1)/2)
The upper or lower triangle of the hermitian matrix A, packed
columnwise in a linear array.  The j-th column of A is stored
in the array AP as follows:
if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j;
if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n.
Note that the  imaginary parts of the diagonal elements need
not be set and are assumed to be zero.
.TP 8
WORK    (workspace) DOUBLE PRECISION array, dimension (LWORK),
where LWORK >= N when NORM = 'I' or '1' or 'O'; otherwise,
WORK is not referenced.