org.netlib.lapack
Class Dlapll

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

public class Dlapll
extends java.lang.Object

Following is the description from the original
Fortran source.  For each array argument, the Java
version will include an integer offset parameter, so
the arguments may not match the description exactly.
Contact seymour@cs.utk.edu with any questions.

* .. * * Purpose * ======= * * Given two column vectors X and Y, let * * A = ( X Y ). * * The subroutine first computes the QR factorization of A = Q*R, * and then computes the SVD of the 2-by-2 upper triangular matrix R. * The smaller singular value of R is returned in SSMIN, which is used * as the measurement of the linear dependency of the vectors X and Y. * * Arguments * ========= * * N (input) INTEGER * The length of the vectors X and Y. * * X (input/output) DOUBLE PRECISION array, * dimension (1+(N-1)*INCX) * On entry, X contains the N-vector X. * On exit, X is overwritten. * * INCX (input) INTEGER * The increment between successive elements of X. INCX > 0. * * Y (input/output) DOUBLE PRECISION array, * dimension (1+(N-1)*INCY) * On entry, Y contains the N-vector Y. * On exit, Y is overwritten. * * INCY (input) INTEGER * The increment between successive elements of Y. INCY > 0. * * SSMIN (output) DOUBLE PRECISION * The smallest singular value of the N-by-2 matrix A = ( X Y ). * * ===================================================================== * * .. Parameters ..


Constructor Summary
Dlapll()
           
 
Method Summary
static void dlapll(int n, double[] x, int _x_offset, int incx, double[] y, int _y_offset, int incy, doubleW ssmin)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Dlapll

public Dlapll()
Method Detail

dlapll

public static void dlapll(int n,
                          double[] x,
                          int _x_offset,
                          int incx,
                          double[] y,
                          int _y_offset,
                          int incy,
                          doubleW ssmin)