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zlange(3) [debian man page]

zlange.f(3)							      LAPACK							       zlange.f(3)

NAME

       zlange.f -

SYNOPSIS

   Functions/Subroutines
       DOUBLE PRECISION function zlange (NORM, M, N, A, LDA, WORK)
	   ZLANGE

Function/Subroutine Documentation
   DOUBLE PRECISION function zlange (characterNORM, integerM, integerN, complex*16, dimension( lda, * )A, integerLDA, double precision, dimension(
       * )WORK)
       ZLANGE

       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.

       Returns:
	   ZLANGE

	       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.

       Parameters:
	   NORM

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

	   M

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

	   N

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

	   A

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

	   LDA

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

	   WORK

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

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   November 2011

       Definition at line 116 of file zlange.f.

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

Version 3.4.1							  Sun May 26 2013						       zlange.f(3)

Check Out this Related Man Page

ZLANGE(l)								 )								 ZLANGE(l)

NAME

       ZLANGE  - return the value of the one norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a com-
       plex matrix A

SYNOPSIS

       DOUBLE PRECISION FUNCTION ZLANGE( NORM, M, N, A, LDA, WORK )

	   CHARACTER	NORM

	   INTEGER	LDA, M, N

	   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  com-
       plex matrix A.

DESCRIPTION

       ZLANGE returns the value

	  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  matrix norm.

ARGUMENTS

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

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

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

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

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

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

LAPACK version 3.0						   15 June 2000 							 ZLANGE(l)
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