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Class org.netlib.lapack.DORG2R

java.lang.Object
   |
   +----org.netlib.lapack.DORG2R

public class DORG2R

extends Object

DORG2R is a simplified interface to the JLAPACK routine dorg2r.
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
 *  =======
 *
 *  DORG2R generates an m by n real matrix Q with orthonormal columns,
 *  which is defined as the first n columns of a product of k elementary
 *  reflectors of order m
 *
 *        Q  =  H(1) H(2) . . . H(k)
 *
 *  as returned by DGEQRF.
 *
 *  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. M >= N >= 0.
 *
 *  K       (input) INTEGER
 *          The number of elementary reflectors whose product defines the
 *          matrix Q. N >= K >= 0.
 *
 *  A       (input/output) DOUBLE PRECISION array, dimension (LDA,N)
 *          On entry, the i-th column must contain the vector which
 *          defines the elementary reflector H(i), for i = 1,2,...,k, as
 *          returned by DGEQRF in the first k columns 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 DGEQRF.
 *
 *  WORK    (workspace) DOUBLE PRECISION array, dimension (N)
 *
 *  INFO    (output) INTEGER
 *          = 0: successful exit
 *          < 0: if INFO = -i, the i-th argument has an illegal value
 *
 *  =====================================================================
 *
 *     .. Parameters ..

DORG2R()

DORG2R(int, int, int, double[][], double[], double[], intW)

 public DORG2R()

 public static void DORG2R(int m,
                           int n,
                           int k,
                           double a[][],
                           double tau[],
                           double work[],
                           intW info)

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