org.netlib.lapack
Class Slarf

java.lang.Object
  org.netlib.lapack.Slarf

public class Slarf
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
 *  =======
 *
 *  SLARF 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.
 *
 *  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) REAL array, dimension
 *                     (1 + (M-1)*abs(INCV)) if SIDE = 'L'
 *                  or (1 + (N-1)*abs(INCV)) if SIDE = 'R'
 *          The vector v in the representation of H. V is not used if
 *          TAU = 0.
 *
 *  INCV    (input) INTEGER
 *          The increment between elements of v. INCV <> 0.
 *
 *  TAU     (input) REAL
 *          The value tau in the representation of H.
 *
 *  C       (input/output) REAL 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. LDC >= max(1,M).
 *
 *  WORK    (workspace) REAL array, dimension
 *                         (N) if SIDE = 'L'
 *                      or (M) if SIDE = 'R'
 *
 *  =====================================================================
 *
 *     .. Parameters ..

Constructor Summary

Slarf()

Method Summary

static void

slarf(java.lang.String side, int m, int n, float[] v, int _v_offset, int incv, float tau, float[] c, int _c_offset, int Ldc, float[] work, int _work_offset)

Methods inherited from class java.lang.Object

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

Constructor Detail

Slarf

public Slarf()

Method Detail

slarf

public static void slarf(java.lang.String side,
                         int m,
                         int n,
                         float[] v,
                         int _v_offset,
                         int incv,
                         float tau,
                         float[] c,
                         int _c_offset,
                         int Ldc,
                         float[] work,
                         int _work_offset)