org.netlib.lapack
Class SLAED6

java.lang.Object
  extended by org.netlib.lapack.SLAED6

public class SLAED6
extends java.lang.Object

SLAED6 is a simplified interface to the JLAPACK routine slaed6.
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 * ======= * * SLAED6 computes the positive or negative root (closest to the origin) * of * z(1) z(2) z(3) * f(x) = rho + --------- + ---------- + --------- * d(1)-x d(2)-x d(3)-x * * It is assumed that * * if ORGATI = .true. the root is between d(2) and d(3); * otherwise it is between d(1) and d(2) * * This routine will be called by SLAED4 when necessary. In most cases, * the root sought is the smallest in magnitude, though it might not be * in some extremely rare situations. * * Arguments * ========= * * KNITER (input) INTEGER * Refer to SLAED4 for its significance. * * ORGATI (input) LOGICAL * If ORGATI is true, the needed root is between d(2) and * d(3); otherwise it is between d(1) and d(2). See * SLAED4 for further details. * * RHO (input) REAL * Refer to the equation f(x) above. * * D (input) REAL array, dimension (3) * D satisfies d(1) < d(2) < d(3). * * Z (input) REAL array, dimension (3) * Each of the elements in z must be positive. * * FINIT (input) REAL * The value of f at 0. It is more accurate than the one * evaluated inside this routine (if someone wants to do * so). * * TAU (output) REAL * The root of the equation f(x). * * INFO (output) INTEGER * = 0: successful exit * > 0: if INFO = 1, failure to converge * * Further Details * =============== * * Based on contributions by * Ren-Cang Li, Computer Science Division, University of California * at Berkeley, USA * * ===================================================================== * * .. Parameters ..


Constructor Summary
SLAED6()
           
 
Method Summary
static void SLAED6(int kniter, boolean orgati, float rho, float[] d, float[] z, float finit, floatW tau, intW info)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

SLAED6

public SLAED6()
Method Detail

SLAED6

public static void SLAED6(int kniter,
                          boolean orgati,
                          float rho,
                          float[] d,
                          float[] z,
                          float finit,
                          floatW tau,
                          intW info)