centos man page for zlangt

zlangt.f(3)							      LAPACK							       zlangt.f(3)

NAME
       zlangt.f -

SYNOPSIS
   Functions/Subroutines
       DOUBLE PRECISION function zlangt (NORM, N, DL, D, DU)
	   ZLANGT returns the value of the 1-norm, Frobenius norm, infinity-norm, or the largest absolute value of any element of a general
	   tridiagonal matrix.

Function/Subroutine Documentation
   DOUBLE PRECISION function zlangt (characterNORM, integerN, complex*16, dimension( * )DL, complex*16, dimension( * )D, complex*16, dimension( *
       )DU)
       ZLANGT returns the value of the 1-norm, Frobenius norm, infinity-norm, or the largest absolute value of any element of a general
       tridiagonal matrix.

       Purpose:

	    ZLANGT  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 tridiagonal matrix A.

       Returns:
	   ZLANGT

	       ZLANGT = ( 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 ZLANGT as described
		     above.

	   N

		     N is INTEGER
		     The order of the matrix A.  N >= 0.  When N = 0, ZLANGT is
		     set to zero.

	   DL

		     DL is COMPLEX*16 array, dimension (N-1)
		     The (n-1) sub-diagonal elements of A.

	   D

		     D is COMPLEX*16 array, dimension (N)
		     The diagonal elements of A.

	   DU

		     DU is COMPLEX*16 array, dimension (N-1)
		     The (n-1) super-diagonal elements of A.

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   September 2012

       Definition at line 107 of file zlangt.f.

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

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