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Class org.netlib.lapack.Dopgtr

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

public class Dopgtr

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
 *  =======
 *
 *  DOPGTR generates a real orthogonal matrix Q which is defined as the
 *  product of n-1 elementary reflectors H(i) of order n, as returned by
 *  DSPTRD using packed storage:
 *
 *  if UPLO = 'U', Q = H(n-1) . . . H(2) H(1),
 *
 *  if UPLO = 'L', Q = H(1) H(2) . . . H(n-1).
 *
 *  Arguments
 *  =========
 *
 *  UPLO    (input) CHARACTER*1
 *          = 'U': Upper triangular packed storage used in previous
 *                 call to DSPTRD;
 *          = 'L': Lower triangular packed storage used in previous
 *                 call to DSPTRD.
 *
 *  N       (input) INTEGER
 *          The order of the matrix Q. N >= 0.
 *
 *  AP      (input) DOUBLE PRECISION array, dimension (N*(N+1)/2)
 *          The vectors which define the elementary reflectors, as
 *          returned by DSPTRD.
 *
 *  TAU     (input) DOUBLE PRECISION array, dimension (N-1)
 *          TAU(i) must contain the scalar factor of the elementary
 *          reflector H(i), as returned by DSPTRD.
 *
 *  Q       (output) DOUBLE PRECISION array, dimension (LDQ,N)
 *          The N-by-N orthogonal matrix Q.
 *
 *  LDQ     (input) INTEGER
 *          The leading dimension of the array Q. LDQ >= max(1,N).
 *
 *  WORK    (workspace) DOUBLE PRECISION array, dimension (N-1)
 *
 *  INFO    (output) INTEGER
 *          = 0:  successful exit
 *          < 0:  if INFO = -i, the i-th argument had an illegal value
 *
 *  =====================================================================
 *
 *     .. Parameters ..

Dopgtr()

dopgtr(String, int, double[], int, double[], int, double[], int, int, double[], int, intW)

 public Dopgtr()

 public static void dopgtr(String uplo,
                           int n,
                           double ap[],
                           int _ap_offset,
                           double tau[],
                           int _tau_offset,
                           double q[],
                           int _q_offset,
                           int ldq,
                           double work[],
                           int _work_offset,
                           intW info)

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