org.netlib.lapack
Class Slarfb

java.lang.Object
  org.netlib.lapack.Slarfb

public class Slarfb
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
 *  =======
 *
 *  SLARFB 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) REAL 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) REAL 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) REAL 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) REAL 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 ..

Constructor Summary

Slarfb()

Method Summary

static void

slarfb(java.lang.String side, java.lang.String trans, java.lang.String direct, java.lang.String storev, int m, int n, int k, float[] v, int _v_offset, int ldv, float[] t, int _t_offset, int ldt, float[] c, int _c_offset, int Ldc, float[] work, int _work_offset, int ldwork)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Slarfb

public Slarfb()

Method Detail

slarfb

public static void slarfb(java.lang.String side,
                          java.lang.String trans,
                          java.lang.String direct,
                          java.lang.String storev,
                          int m,
                          int n,
                          int k,
                          float[] v,
                          int _v_offset,
                          int ldv,
                          float[] t,
                          int _t_offset,
                          int ldt,
                          float[] c,
                          int _c_offset,
                          int Ldc,
                          float[] work,
                          int _work_offset,
                          int ldwork)