org.netlib.lapack
Class SLACON

java.lang.Object
  extended by org.netlib.lapack.SLACON

public class SLACON
extends java.lang.Object

SLACON is a simplified interface to the JLAPACK routine slacon.
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 * ======= * * SLACON 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) REAL array, dimension (N) * On the final return, V = A*W, where EST = norm(V)/norm(W) * (W is not returned). * * X (input/output) REAL array, dimension (N) * On an intermediate return, X should be overwritten by * A * X, if KASE=1, * A' * X, if KASE=2, * and SLACON must be re-called with all the other parameters * unchanged. * * ISGN (workspace) INTEGER array, dimension (N) * * EST (output) REAL * An estimate (a lower bound) for norm(A). * * KASE (input/output) INTEGER * On the initial call to SLACON, 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 SLACON, 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
SLACON()
           
 
Method Summary
static void SLACON(int n, float[] v, float[] x, int[] isgn, floatW est, intW kase)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

SLACON

public SLACON()
Method Detail

SLACON

public static void SLACON(int n,
                          float[] v,
                          float[] x,
                          int[] isgn,
                          floatW est,
                          intW kase)