org.netlib.lapack
Class SLASQ5

java.lang.Object
  org.netlib.lapack.SLASQ5

public class SLASQ5
extends java.lang.Object

SLASQ5 is a simplified interface to the JLAPACK routine slasq5.
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
 *  =======
 *
 *  SLASQ5 computes one dqds transform in ping-pong form, one
 *  version for IEEE machines another for non IEEE machines.
 *
 *  Arguments
 *  =========
 *
 *  I0    (input) INTEGER
 *        First index.
 *
 *  N0    (input) INTEGER
 *        Last index.
 *
 *  Z     (input) REAL array, dimension ( 4*N )
 *        Z holds the qd array. EMIN is stored in Z(4*N0) to avoid
 *        an extra argument.
 *
 *  PP    (input) INTEGER
 *        PP=0 for ping, PP=1 for pong.
 *
 *  TAU   (input) REAL
 *        This is the shift.
 *
 *  DMIN  (output) REAL
 *        Minimum value of d.
 *
 *  DMIN1 (output) REAL
 *        Minimum value of d, excluding D( N0 ).
 *
 *  DMIN2 (output) REAL
 *        Minimum value of d, excluding D( N0 ) and D( N0-1 ).
 *
 *  DN    (output) REAL
 *        d(N0), the last value of d.
 *
 *  DNM1  (output) REAL
 *        d(N0-1).
 *
 *  DNM2  (output) REAL
 *        d(N0-2).
 *
 *  IEEE  (input) LOGICAL
 *        Flag for IEEE or non IEEE arithmetic.
 *
 *  =====================================================================
 *
 *     .. Parameter ..

Constructor Summary

SLASQ5()

Method Summary

static void

SLASQ5(int i0, int n0, float[] z, int pp, float tau, floatW dmin, floatW dmin1, floatW dmin2, floatW dn, floatW dnm1, floatW dnm2, boolean ieee)

Methods inherited from class java.lang.Object

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

Constructor Detail

SLASQ5

public SLASQ5()

Method Detail

SLASQ5

public static void SLASQ5(int i0,
                          int n0,
                          float[] z,
                          int pp,
                          float tau,
                          floatW dmin,
                          floatW dmin1,
                          floatW dmin2,
                          floatW dn,
                          floatW dnm1,
                          floatW dnm2,
                          boolean ieee)