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Class org.netlib.lapack.DLARFX

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

public class DLARFX

extends Object

DLARFX is a simplified interface to the JLAPACK routine dlarfx.
This interface converts Java-style 2D row-major arrays into
the 1D column-major linearized arrays expected by the lower
level JLAPACK routines.  Using this interface also allows you
to omit offset and leading dimension arguments.  However, because
of these conversions, these routines will be slower than the low
level ones.  Following is the description from the original Fortran
source.  Contact seymour@cs.utk.edu with any questions.

 *     ..
 *
 *  Purpose
 *  =======
 *
 *  DLARFX applies a real elementary reflector H to a real m by n
 *  matrix C, from either the left or the right. H is represented in the
 *  form
 *
 *        H = I - tau * v * v'
 *
 *  where tau is a real scalar and v is a real vector.
 *
 *  If tau = 0, then H is taken to be the unit matrix
 *
 *  This version uses inline code if H has order < 11.
 *
 *  Arguments
 *  =========
 *
 *  SIDE    (input) CHARACTER*1
 *          = 'L': form  H * C
 *          = 'R': form  C * H
 *
 *  M       (input) INTEGER
 *          The number of rows of the matrix C.
 *
 *  N       (input) INTEGER
 *          The number of columns of the matrix C.
 *
 *  V       (input) DOUBLE PRECISION array, dimension (M) if SIDE = 'L'
 *                                     or (N) if SIDE = 'R'
 *          The vector v in the representation of H.
 *
 *  TAU     (input) DOUBLE PRECISION
 *          The value tau in the representation of H.
 *
 *  C       (input/output) DOUBLE PRECISION array, dimension (LDC,N)
 *          On entry, the m by n matrix C.
 *          On exit, C is overwritten by the matrix H * C if SIDE = 'L',
 *          or C * H if SIDE = 'R'.
 *
 *  LDC     (input) INTEGER
 *          The leading dimension of the array C. LDA >= (1,M).
 *
 *  WORK    (workspace) DOUBLE PRECISION array, dimension
 *                      (N) if SIDE = 'L'
 *                      or (M) if SIDE = 'R'
 *          WORK is not referenced if H has order < 11.
 *
 *  =====================================================================
 *
 *     .. Parameters ..

DLARFX()

DLARFX(String, int, int, double[], double, double[][], double[])

 public DLARFX()

 public static void DLARFX(String side,
                           int m,
                           int n,
                           double v[],
                           double tau,
                           double c[][],
                           double work[])

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