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Class org.netlib.lapack.DLARFB

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

public class DLARFB

extends Object

DLARFB is a simplified interface to the JLAPACK routine dlarfb.
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
 *  =======
 *
 *  DLARFB applies a real block reflector H or its transpose H' to a
 *  real m by n matrix C, from either the left or the right.
 *
 *  Arguments
 *  =========
 *
 *  SIDE    (input) CHARACTER*1
 *          = 'L': apply H or H' from the Left
 *          = 'R': apply H or H' from the Right
 *
 *  TRANS   (input) CHARACTER*1
 *          = 'N': apply H (No transpose)
 *          = 'T': apply H' (Transpose)
 *
 *  DIRECT  (input) CHARACTER*1
 *          Indicates how H is formed from a product of elementary
 *          reflectors
 *          = 'F': H = H(1) H(2) . . . H(k) (Forward)
 *          = 'B': H = H(k) . . . H(2) H(1) (Backward)
 *
 *  STOREV  (input) CHARACTER*1
 *          Indicates how the vectors which define the elementary
 *          reflectors are stored:
 *          = 'C': Columnwise
 *          = 'R': Rowwise
 *
 *  M       (input) INTEGER
 *          The number of rows of the matrix C.
 *
 *  N       (input) INTEGER
 *          The number of columns of the matrix C.
 *
 *  K       (input) INTEGER
 *          The order of the matrix T (= the number of elementary
 *          reflectors whose product defines the block reflector).
 *
 *  V       (input) DOUBLE PRECISION array, dimension
 *                                (LDV,K) if STOREV = 'C'
 *                                (LDV,M) if STOREV = 'R' and SIDE = 'L'
 *                                (LDV,N) if STOREV = 'R' and SIDE = 'R'
 *          The matrix V. See further details.
 *
 *  LDV     (input) INTEGER
 *          The leading dimension of the array V.
 *          If STOREV = 'C' and SIDE = 'L', LDV >= max(1,M);
 *          if STOREV = 'C' and SIDE = 'R', LDV >= max(1,N);
 *          if STOREV = 'R', LDV >= K.
 *
 *  T       (input) DOUBLE PRECISION array, dimension (LDT,K)
 *          The triangular k by k matrix T in the representation of the
 *          block reflector.
 *
 *  LDT     (input) INTEGER
 *          The leading dimension of the array T. LDT >= K.
 *
 *  C       (input/output) DOUBLE PRECISION array, dimension (LDC,N)
 *          On entry, the m by n matrix C.
 *          On exit, C is overwritten by H*C or H'*C or C*H or C*H'.
 *
 *  LDC     (input) INTEGER
 *          The leading dimension of the array C. LDA >= max(1,M).
 *
 *  WORK    (workspace) DOUBLE PRECISION array, dimension (LDWORK,K)
 *
 *  LDWORK  (input) INTEGER
 *          The leading dimension of the array WORK.
 *          If SIDE = 'L', LDWORK >= max(1,N);
 *          if SIDE = 'R', LDWORK >= max(1,M).
 *
 *  =====================================================================
 *
 *     .. Parameters ..

DLARFB()

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

 public DLARFB()

 public static void DLARFB(String side,
                           String trans,
                           String direct,
                           String storev,
                           int m,
                           int n,
                           int k,
                           double v[][],
                           double t[][],
                           double c[][],
                           double work[][])

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