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NAME
     zlanhe - return the value of the one norm, or the  Frobenius
     norm,  or the infinity norm, or the element of largest abso-
     lute value of a complex hermitian matrix A

SYNOPSIS
     DOUBLE PRECISION FUNCTION ZLANHE( NORM,  UPLO,  N,  A,  LDA,
               WORK )

     CHARACTER NORM, UPLO

     INTEGER LDA, N

     DOUBLE PRECISION WORK( * )

     COMPLEX*16 A( LDA, * )



     #include <sunperf.h>

     double zlanhe(char norm, char  uplo,  int  n,  doublecomplex
               *za, int lda) ;

PURPOSE
     ZLANHE  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.


DESCRIPTION
     ZLANHE returns the value

        ZLANHE = ( max(abs(A(i,j))), NORM = 'M' or 'm'
                 (
                 ( norm1(A),         NORM = '1', 'O' or 'o'
                 (
                 ( normI(A),         NORM = 'I' or 'i'
                 (
                 ( 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.


ARGUMENTS
     NORM      (input) CHARACTER*1
               Specifies the value to be returned  in  ZLANHE  as
               described above.

     UPLO      (input) CHARACTER*1
               Specifies whether the upper  or  lower  triangular
               part  of  the  hermitian  matrix A is to be refer-
               enced.  = 'U':  Upper  triangular  part  of  A  is
               referenced
               = 'L':  Lower triangular part of A is referenced

     N         (input) INTEGER
               The order of the matrix A.  N >= 0.  When N  =  0,
               ZLANHE is set to zero.

     A         (input) COMPLEX*16 array, dimension (LDA,N)
               The hermitian matrix A.  If UPLO = 'U', the  lead-
               ing n by n upper triangular part of A contains the
               upper triangular part of the  matrix  A,  and  the
               strictly  lower triangular part of A is not refer-
               enced.  If UPLO = 'L', the leading n  by  n  lower
               triangular part of A contains the lower triangular
               part of the matrix A, and the strictly upper  tri-
               angular part of A is not referenced. Note that the
               imaginary parts of the diagonal elements need  not
               be set and are assumed to be zero.

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

     WORK      (workspace)  DOUBLE  PRECISION  array,   dimension
               (LWORK),
               where LWORK >= N when NORM = 'I' or  '1'  or  'O';
               otherwise, WORK is not referenced.

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