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## org.netlib.lapack
Class Dorgrq

    java.lang.Object
      org.netlib.lapack.Dorgrq

    public class Dorgrq

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
     *  =======
     *
     *  DORGRQ generates an M-by-N real matrix Q with orthonormal rows,
     *  which is defined as the last M rows of a product of K elementary
     *  reflectors of order N
     *
     *        Q  =  H(1) H(2) . . . H(k)
     *
     *  as returned by DGERQF.
     *
     *  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 (m-k+i)-th row must contain the vector which
     *          defines the elementary reflector H(i), for i = 1,2,...,k, as

     *          returned by DGERQF in the last 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 DGERQF.
     *
     *  WORK    (workspace/output) DOUBLE PRECISION array, dimension (MAX(1,L
     *          On exit, if INFO = 0, WORK(1) returns the optimal LWORK.
     *
     *  LWORK   (input) INTEGER
     *          The dimension of the array WORK. LWORK >= max(1,M).
     *          For optimum performance LWORK >= M*NB, where NB is the
     *          optimal blocksize.
     *
     *          If LWORK = -1, then a workspace query is assumed; the routine
     *          only calculates the optimal size of the WORK array, returns
     *          this value as the first entry of the WORK array, and no error
     *          message related to LWORK is issued by XERBLA.
     *
     *  INFO    (output) INTEGER
     *          = 0:  successful exit
     *          < 0:  if INFO = -i, the i-th argument has an illegal value
     *
     *  =====================================================================
     *
     *     .. Parameters ..

Constructor Summary
`Dorgrq()`

Method Summary
`static void` | `dorgrq(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)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### Dorgrq

    public Dorgrq()

Method Detail

### dorgrq

    public static void dorgrq(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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