org.netlib.lapack
Class DLANST

java.lang.Object
  org.netlib.lapack.DLANST

public class DLANST
extends java.lang.Object

DLANST is a simplified interface to the JLAPACK routine dlanst.
This interface converts Java-style 2D row-major arrays into
the 1D column-major linearized arrays expected by the lower
level JLAPACK routines.  Using this interface also allows you
to omit offset and leading dimension arguments.  However, because
of these conversions, these routines will be slower than the low
level ones.  Following is the description from the original Fortran
source.  Contact seymour@cs.utk.edu with any questions.

 *     ..
 *
 *  Purpose
 *  =======
 *
 *  DLANST  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 symmetric tridiagonal matrix A.
 *
 *  Description
 *  ===========
 *
 *  DLANST returns the value
 *
 *     DLANST = ( 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 DLANST as described
 *          above.
 *
 *  N       (input) INTEGER
 *          The order of the matrix A.  N >= 0.  When N = 0, DLANST is
 *          set to zero.
 *
 *  D       (input) DOUBLE PRECISION array, dimension (N)
 *          The diagonal elements of A.
 *
 *  E       (input) DOUBLE PRECISION array, dimension (N-1)
 *          The (n-1) sub-diagonal or super-diagonal elements of A.
 *
 *  =====================================================================
 *
 *     .. Parameters ..

Constructor Summary

DLANST()

Method Summary

static double

DLANST(java.lang.String norm, int n, double[] d, double[] e)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DLANST

public DLANST()

Method Detail

DLANST

public static double DLANST(java.lang.String norm,
                            int n,
                            double[] d,
                            double[] e)