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slange.f(3)				      LAPACK				      slange.f(3)

NAME
       slange.f -

SYNOPSIS
   Functions/Subroutines
       REAL function slange (NORM, M, N, A, LDA, WORK)
	   SLANGE returns the value of the 1-norm, Frobenius norm, infinity-norm, or the largest
	   absolute value of any element of a general rectangular matrix.

Function/Subroutine Documentation
   REAL function slange (characterNORM, integerM, integerN, real, dimension( lda, * )A,
       integerLDA, real, dimension( * )WORK)
       SLANGE returns the value of the 1-norm, Frobenius norm, infinity-norm, or the largest
       absolute value of any element of a general rectangular matrix.

       Purpose:

	    SLANGE  returns the value of the one norm,	or the Frobenius norm, or
	    the  infinity norm,  or the  element of  largest absolute value  of a
	    real matrix A.

       Returns:
	   SLANGE

	       SLANGE = ( 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 SLANGE as described
		     above.

	   M

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

	   N

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

	   A

		     A is REAL 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 REAL 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:
	   September 2012

       Definition at line 115 of file slange.f.

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

Version 3.4.2				 Tue Sep 25 2012			      slange.f(3)
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