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## org.netlib.lapack
Class DLACON

    java.lang.Object
      org.netlib.lapack.DLACON

    public class DLACON

extends java.lang.Object

    DLACON is a simplified interface to the JLAPACK routine dlacon.
    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
     *  =======
     *
     *  DLACON estimates the 1-norm of a square, real matrix A.
     *  Reverse communication is used for evaluating matrix-vector products.

     *
     *  Arguments
     *  =========
     *
     *  N      (input) INTEGER
     *         The order of the matrix.  N >= 1.
     *
     *  V      (workspace) DOUBLE PRECISION array, dimension (N)
     *         On the final return, V = A*W,  where  EST = norm(V)/norm(W)
     *         (W is not returned).
     *
     *  X      (input/output) DOUBLE PRECISION array, dimension (N)
     *         On an intermediate return, X should be overwritten by
     *               A * X,   if KASE=1,
     *               A' * X,  if KASE=2,
     *         and DLACON must be re-called with all the other parameters
     *         unchanged.
     *
     *  ISGN   (workspace) INTEGER array, dimension (N)
     *
     *  EST    (input/output) DOUBLE PRECISION
     *         On entry with KASE = 1 or 2 and JUMP = 3, EST should be
     *         unchanged from the previous call to DLACON.
     *         On exit, EST is an estimate (a lower bound) for norm(A).
     *
     *  KASE   (input/output) INTEGER
     *         On the initial call to DLACON, KASE should be 0.
     *         On an intermediate return, KASE will be 1 or 2, indicating
     *         whether X should be overwritten by A * X  or A' * X.
     *         On the final return from DLACON, KASE will again be 0.
     *
     *  Further Details
     *  ======= =======
     *
     *  Contributed by Nick Higham, University of Manchester.
     *  Originally named SONEST, dated March 16, 1988.
     *
     *  Reference: N.J. Higham, "FORTRAN codes for estimating the one-norm of
     *  a real or complex matrix, with applications to condition estimation",
     *  ACM Trans. Math. Soft., vol. 14, no. 4, pp. 381-396, December 1988.
     *
     *  =====================================================================
     *
     *     .. Parameters ..

Constructor Summary
`DLACON()`

Method Summary
`static void` | `DLACON(int n, double[] v, double[] x, int[] isgn, doubleW est, intW kase)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### DLACON

    public DLACON()

Method Detail

### DLACON

    public static void DLACON(int n,
                              double[] v,
                              double[] x,
                              int[] isgn,
                              doubleW est,
                              intW kase)

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