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LAPACK version 3.0
clanhe(3)

PURPOSE
  CLANHE - 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

SYNTAX
  REAL FUNCTION CLANHE( NORM, UPLO, N, A, LDA, WORK )

      CHARACTER NORM, UPLO

      INTEGER	LDA, N

      REAL	WORK( * )

      COMPLEX	A( LDA, * )

DESCRIPTION
  CLANHE 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
  CLANHE returns the value

     CLANHE = ( 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 CLANHE as described above.

  UPLO	  (input) CHARACTER*1
	  Specifies whether the upper or lower triangular part of the
	  hermitian matrix A is to be referenced.  = '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, CLANHE is set to
	  zero.

  A	  (input) COMPLEX array, dimension (LDA,N)
	  The hermitian matrix A.  If UPLO = 'U', the leading 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
	  referenced.  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 triangular 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) REAL array, dimension (LWORK),
	  where LWORK >= N when NORM = 'I' or '1' or 'O'; otherwise, WORK is
	  not referenced.