org.netlib.lapack
Class SORGL2

java.lang.Object
  org.netlib.lapack.SORGL2

public class SORGL2
extends java.lang.Object

SORGL2 is a simplified interface to the JLAPACK routine sorgl2.
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
 *  =======
 *
 *  SORGL2 generates an m by n real matrix Q with orthonormal rows,
 *  which is defined as the first m rows of a product of k elementary
 *  reflectors of order n
 *
 *        Q  =  H(k) . . . H(2) H(1)
 *
 *  as returned by SGELQF.
 *
 *  Arguments
 *  =========
 *
 *  M       (input) INTEGER
 *          The number of rows of the matrix Q. M >= 0.
 *
 *  N       (input) INTEGER
 *          The number of columns of the matrix Q. N >= M.
 *
 *  K       (input) INTEGER
 *          The number of elementary reflectors whose product defines the
 *          matrix Q. M >= K >= 0.
 *
 *  A       (input/output) REAL array, dimension (LDA,N)
 *          On entry, the i-th row must contain the vector which defines

 *          the elementary reflector H(i), for i = 1,2,...,k, as returned
 *          by SGELQF in the first k rows of its array argument A.
 *          On exit, the m-by-n matrix Q.
 *
 *  LDA     (input) INTEGER
 *          The first dimension of the array A. LDA >= max(1,M).
 *
 *  TAU     (input) REAL array, dimension (K)
 *          TAU(i) must contain the scalar factor of the elementary
 *          reflector H(i), as returned by SGELQF.
 *
 *  WORK    (workspace) REAL array, dimension (M)
 *
 *  INFO    (output) INTEGER
 *          = 0: successful exit
 *          < 0: if INFO = -i, the i-th argument has an illegal value
 *
 *  =====================================================================
 *
 *     .. Parameters ..

Constructor Summary

SORGL2()

Method Summary

static void

SORGL2(int m, int n, int k, float[][] a, float[] tau, float[] work, intW info)

Methods inherited from class java.lang.Object

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

Constructor Detail

SORGL2

public SORGL2()

Method Detail

SORGL2

public static void SORGL2(int m,
                          int n,
                          int k,
                          float[][] a,
                          float[] tau,
                          float[] work,
                          intW info)