org.netlib.lapack
Class Dorg2r

java.lang.Object
  org.netlib.lapack.Dorg2r

public class Dorg2r
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
 *  =======
 *
 *  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 ..

Constructor Summary

Dorg2r()

Method Summary

static void

dorg2r(int m, int n, int k, double[] a, int _a_offset, int lda, double[] tau, int _tau_offset, double[] work, int _work_offset, intW info)

Methods inherited from class java.lang.Object

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

Constructor Detail

Dorg2r

public Dorg2r()

Method Detail

dorg2r

public static void dorg2r(int m,
                          int n,
                          int k,
                          double[] a,
                          int _a_offset,
                          int lda,
                          double[] tau,
                          int _tau_offset,
                          double[] work,
                          int _work_offset,
                          intW info)