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zlange examples
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Man Page Details
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 Online html documentation available at 
            http://www.netlib.org/lapack/explore-html/ 

 Definition:
 ===========

       DOUBLE PRECISION FUNCTION ZLANGE( NORM, M, N, A, LDA, WORK )
 
      .. Scalar Arguments ..
       CHARACTER          NORM
       INTEGER            LDA, M, N
       ..
       .. Array Arguments ..
       DOUBLE PRECISION   WORK( * )
       COMPLEX*16         A( LDA, * )
       ..
  

 Purpose:
 =============

 ZLANGE  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 matrix A.


    ZLANGE = ( 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 consistent matrix norm.

 Arguments:
 ==========

  [in] NORM

          NORM is CHARACTER*1
          Specifies the value to be returned in ZLANGE as described
          above.

  [in] M

          M is INTEGER
          The number of rows of the matrix A.  M >= 0.  When M = 0,
          ZLANGE is set to zero.

  [in] N

          N is INTEGER
          The number of columns of the matrix A.  N >= 0.  When N = 0,
          ZLANGE is set to zero.

  [in] A

          A is COMPLEX*16 array, dimension (LDA,N)
          The m by n matrix A.

  [in] LDA

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

  [out] WORK

          WORK is DOUBLE PRECISION array, dimension (MAX(1,LWORK)),
          where LWORK >= M when NORM = 'I'; otherwise, WORK is not
          referenced.

 Authors:
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  Univ. of Tennessee 
  Univ. of California Berkeley 
  Univ. of Colorado Denver 
  NAG Ltd. 

 November 2011

