org.netlib.lapack
Class Sorgl2

java.lang.Object
  org.netlib.lapack.Sorgl2

public class Sorgl2
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
 *  =======
 *
 *  SORGL2 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 SGELQF.
 *
 *  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) REAL 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 SGELQF 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) REAL array, dimension (K)
 *          TAU(i) must contain the scalar factor of the elementary
 *          reflector H(i), as returned by SGELQF.
 *
 *  WORK    (workspace) REAL array, dimension (M)
 *
 *  INFO    (output) INTEGER
 *          = 0: successful exit
 *          < 0: if INFO = -i, the i-th argument has an illegal value
 *
 *  =====================================================================
 *
 *     .. Parameters ..

Constructor Summary

Sorgl2()

Method Summary

static void

sorgl2(int m, int n, int k, float[] a, int _a_offset, int lda, float[] tau, int _tau_offset, float[] 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

Sorgl2

public Sorgl2()

Method Detail

sorgl2

public static void sorgl2(int m,
                          int n,
                          int k,
                          float[] a,
                          int _a_offset,
                          int lda,
                          float[] tau,
                          int _tau_offset,
                          float[] work,
                          int _work_offset,
                          intW info)