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Class org.netlib.lapack.Dorgqr

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

public class Dorgqr

extends 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
 *  =======
 *
 *  DORGQR 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/output) DOUBLE PRECISION array, dimension (LWORK)
 *          On exit, if INFO = 0, WORK(1) returns the optimal LWORK.
 *
 *  LWORK   (input) INTEGER
 *          The dimension of the array WORK. LWORK >= max(1,N).
 *          For optimum performance LWORK >= N*NB, where NB is the
 *          optimal blocksize.
 *
 *  INFO    (output) INTEGER
 *          = 0:  successful exit
 *          < 0:  if INFO = -i, the i-th argument has an illegal value
 *
 *  =====================================================================
 *
 *     .. Parameters ..

Dorgqr()

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

 public Dorgqr()

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

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