org.netlib.lapack
Class Sormr3

java.lang.Object
  org.netlib.lapack.Sormr3

public class Sormr3
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
 *  =======
 *
 *  SORMR3 overwrites the general real m by n matrix C with
 *
 *        Q * C  if SIDE = 'L' and TRANS = 'N', or
 *
 *        Q'* C  if SIDE = 'L' and TRANS = 'T', or
 *
 *        C * Q  if SIDE = 'R' and TRANS = 'N', or
 *
 *        C * Q' if SIDE = 'R' and TRANS = 'T',
 *
 *  where Q is a real orthogonal matrix defined as the product of k
 *  elementary reflectors
 *
 *        Q = H(1) H(2) . . . H(k)
 *
 *  as returned by STZRZF. Q is of order m if SIDE = 'L' and of order n
 *  if SIDE = 'R'.
 *
 *  Arguments
 *  =========
 *
 *  SIDE    (input) CHARACTER*1
 *          = 'L': apply Q or Q' from the Left
 *          = 'R': apply Q or Q' from the Right
 *
 *  TRANS   (input) CHARACTER*1
 *          = 'N': apply Q  (No transpose)
 *          = 'T': apply Q' (Transpose)
 *
 *  M       (input) INTEGER
 *          The number of rows of the matrix C. M >= 0.
 *
 *  N       (input) INTEGER
 *          The number of columns of the matrix C. N >= 0.
 *
 *  K       (input) INTEGER
 *          The number of elementary reflectors whose product defines
 *          the matrix Q.
 *          If SIDE = 'L', M >= K >= 0;
 *          if SIDE = 'R', N >= K >= 0.
 *
 *  L       (input) INTEGER
 *          The number of columns of the matrix A containing
 *          the meaningful part of the Householder reflectors.
 *          If SIDE = 'L', M >= L >= 0, if SIDE = 'R', N >= L >= 0.
 *
 *  A       (input) REAL array, dimension
 *                               (LDA,M) if SIDE = 'L',
 *                               (LDA,N) if SIDE = 'R'
 *          The i-th row must contain the vector which defines the
 *          elementary reflector H(i), for i = 1,2,...,k, as returned by

 *          STZRZF in the last k rows of its array argument A.
 *          A is modified by the routine but restored on exit.
 *
 *  LDA     (input) INTEGER
 *          The leading dimension of the array A. LDA >= max(1,K).
 *
 *  TAU     (input) REAL array, dimension (K)
 *          TAU(i) must contain the scalar factor of the elementary
 *          reflector H(i), as returned by STZRZF.
 *
 *  C       (input/output) REAL array, dimension (LDC,N)
 *          On entry, the m-by-n matrix C.
 *          On exit, C is overwritten by Q*C or Q'*C or C*Q' or C*Q.
 *
 *  LDC     (input) INTEGER
 *          The leading dimension of the array C. LDC >= max(1,M).
 *
 *  WORK    (workspace) REAL array, dimension
 *                                   (N) if SIDE = 'L',
 *                                   (M) if SIDE = 'R'
 *
 *  INFO    (output) INTEGER
 *          = 0: successful exit
 *          < 0: if INFO = -i, the i-th argument had an illegal value
 *
 *  Further Details
 *  ===============
 *
 *  Based on contributions by
 *    A. Petitet, Computer Science Dept., Univ. of Tenn., Knoxville, USA

 *
 *  =====================================================================
 *
 *     .. Local Scalars ..

Constructor Summary

Sormr3()

Method Summary

static void

sormr3(java.lang.String side, java.lang.String trans, int m, int n, int k, int l, float[] a, int _a_offset, int lda, float[] tau, int _tau_offset, float[] c, int _c_offset, int Ldc, float[] work, int _work_offset, intW info)

Methods inherited from class java.lang.Object

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

Constructor Detail

Sormr3

public Sormr3()

Method Detail

sormr3

public static void sormr3(java.lang.String side,
                          java.lang.String trans,
                          int m,
                          int n,
                          int k,
                          int l,
                          float[] a,
                          int _a_offset,
                          int lda,
                          float[] tau,
                          int _tau_offset,
                          float[] c,
                          int _c_offset,
                          int Ldc,
                          float[] work,
                          int _work_offset,
                          intW info)