org.netlib.lapack
Class Slaqge

java.lang.Object
  org.netlib.lapack.Slaqge

public class Slaqge
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
 *  =======
 *
 *  SLAQGE equilibrates a general M by N matrix A using the row and
 *  scaling factors in the vectors R and C.
 *
 *  Arguments
 *  =========
 *
 *  M       (input) INTEGER
 *          The number of rows of the matrix A.  M >= 0.
 *
 *  N       (input) INTEGER
 *          The number of columns of the matrix A.  N >= 0.
 *
 *  A       (input/output) REAL array, dimension (LDA,N)
 *          On entry, the M by N matrix A.
 *          On exit, the equilibrated matrix.  See EQUED for the form of

 *          the equilibrated matrix.
 *
 *  LDA     (input) INTEGER
 *          The leading dimension of the array A.  LDA >= max(M,1).
 *
 *  R       (input) REAL array, dimension (M)
 *          The row scale factors for A.
 *
 *  C       (input) REAL array, dimension (N)
 *          The column scale factors for A.
 *
 *  ROWCND  (input) REAL
 *          Ratio of the smallest R(i) to the largest R(i).
 *
 *  COLCND  (input) REAL
 *          Ratio of the smallest C(i) to the largest C(i).
 *
 *  AMAX    (input) REAL
 *          Absolute value of largest matrix entry.
 *
 *  EQUED   (output) CHARACTER*1
 *          Specifies the form of equilibration that was done.
 *          = 'N':  No equilibration
 *          = 'R':  Row equilibration, i.e., A has been premultiplied by

 *                  diag(R).
 *          = 'C':  Column equilibration, i.e., A has been postmultiplied
 *                  by diag(C).
 *          = 'B':  Both row and column equilibration, i.e., A has been
 *                  replaced by diag(R) * A * diag(C).
 *
 *  Internal Parameters
 *  ===================
 *
 *  THRESH is a threshold value used to decide if row or column scaling
 *  should be done based on the ratio of the row or column scaling
 *  factors.  If ROWCND < THRESH, row scaling is done, and if
 *  COLCND < THRESH, column scaling is done.
 *
 *  LARGE and SMALL are threshold values used to decide if row scaling
 *  should be done based on the absolute size of the largest matrix
 *  element.  If AMAX > LARGE or AMAX < SMALL, row scaling is done.
 *
 *  =====================================================================
 *
 *     .. Parameters ..

Constructor Summary

Slaqge()

Method Summary

static void

slaqge(int m, int n, float[] a, int _a_offset, int lda, float[] r, int _r_offset, float[] c, int _c_offset, float rowcnd, float colcnd, float amax, StringW equed)

Methods inherited from class java.lang.Object

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

Constructor Detail

Slaqge

public Slaqge()

Method Detail

slaqge

public static void slaqge(int m,
                          int n,
                          float[] a,
                          int _a_offset,
                          int lda,
                          float[] r,
                          int _r_offset,
                          float[] c,
                          int _c_offset,
                          float rowcnd,
                          float colcnd,
                          float amax,
                          StringW equed)