org.netlib.lapack
Class DLAR2V

java.lang.Object
  org.netlib.lapack.DLAR2V

public class DLAR2V
extends java.lang.Object

DLAR2V is a simplified interface to the JLAPACK routine dlar2v.
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
 *  =======
 *
 *  DLAR2V applies a vector of real plane rotations from both sides to
 *  a sequence of 2-by-2 real symmetric matrices, defined by the elements
 *  of the vectors x, y and z. For i = 1,2,...,n
 *
 *     ( x(i)  z(i) ) := (  c(i)  s(i) ) ( x(i)  z(i) ) ( c(i) -s(i) )
 *     ( z(i)  y(i) )    ( -s(i)  c(i) ) ( z(i)  y(i) ) ( s(i)  c(i) )
 *
 *  Arguments
 *  =========
 *
 *  N       (input) INTEGER
 *          The number of plane rotations to be applied.
 *
 *  X       (input/output) DOUBLE PRECISION array,
 *                         dimension (1+(N-1)*INCX)
 *          The vector x.
 *
 *  Y       (input/output) DOUBLE PRECISION array,
 *                         dimension (1+(N-1)*INCX)
 *          The vector y.
 *
 *  Z       (input/output) DOUBLE PRECISION array,
 *                         dimension (1+(N-1)*INCX)
 *          The vector z.
 *
 *  INCX    (input) INTEGER
 *          The increment between elements of X, Y and Z. INCX > 0.
 *
 *  C       (input) DOUBLE PRECISION array, dimension (1+(N-1)*INCC)
 *          The cosines of the plane rotations.
 *
 *  S       (input) DOUBLE PRECISION array, dimension (1+(N-1)*INCC)
 *          The sines of the plane rotations.
 *
 *  INCC    (input) INTEGER
 *          The increment between elements of C and S. INCC > 0.
 *
 *  =====================================================================
 *
 *     .. Local Scalars ..

Constructor Summary

DLAR2V()

Method Summary

static void

DLAR2V(int n, double[] x, double[] y, double[] z, int incx, double[] c, double[] s, int incc)

Methods inherited from class java.lang.Object

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

Constructor Detail

DLAR2V

public DLAR2V()

Method Detail

DLAR2V

public static void DLAR2V(int n,
                          double[] x,
                          double[] y,
                          double[] z,
                          int incx,
                          double[] c,
                          double[] s,
                          int incc)