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Class org.netlib.lapack.DORGL2

java.lang.Object
   |
   +----org.netlib.lapack.DORGL2

public class DORGL2

extends Object

DORGL2 is a simplified interface to the JLAPACK routine dorgl2.
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
 *  =======
 *
 *  DORGL2 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 DGELQF.
 *
 *  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) DOUBLE PRECISION 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 DGELQF 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) DOUBLE PRECISION array, dimension (K)
 *          TAU(i) must contain the scalar factor of the elementary
 *          reflector H(i), as returned by DGELQF.
 *
 *  WORK    (workspace) DOUBLE PRECISION array, dimension (M)
 *
 *  INFO    (output) INTEGER
 *          = 0: successful exit
 *          < 0: if INFO = -i, the i-th argument has an illegal value
 *
 *  =====================================================================
 *
 *     .. Parameters ..

DORGL2()

DORGL2(int, int, int, double[][], double[], double[], intW)

 public DORGL2()

 public static void DORGL2(int m,
                           int n,
                           int k,
                           double a[][],
                           double tau[],
                           double work[],
                           intW info)

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