org.netlib.lapack
Class SGECON

java.lang.Object
  org.netlib.lapack.SGECON

public class SGECON
extends java.lang.Object

SGECON is a simplified interface to the JLAPACK routine sgecon.
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
 *  =======
 *
 *  SGECON estimates the reciprocal of the condition number of a general

 *  real matrix A, in either the 1-norm or the infinity-norm, using
 *  the LU factorization computed by SGETRF.
 *
 *  An estimate is obtained for norm(inv(A)), and the reciprocal of the
 *  condition number is computed as
 *     RCOND = 1 / ( norm(A) * norm(inv(A)) ).
 *
 *  Arguments
 *  =========
 *
 *  NORM    (input) CHARACTER*1
 *          Specifies whether the 1-norm condition number or the
 *          infinity-norm condition number is required:
 *          = '1' or 'O':  1-norm;
 *          = 'I':         Infinity-norm.
 *
 *  N       (input) INTEGER
 *          The order of the matrix A.  N >= 0.
 *
 *  A       (input) REAL array, dimension (LDA,N)
 *          The factors L and U from the factorization A = P*L*U
 *          as computed by SGETRF.
 *
 *  LDA     (input) INTEGER
 *          The leading dimension of the array A.  LDA >= max(1,N).
 *
 *  ANORM   (input) REAL
 *          If NORM = '1' or 'O', the 1-norm of the original matrix A.
 *          If NORM = 'I', the infinity-norm of the original matrix A.
 *
 *  RCOND   (output) REAL
 *          The reciprocal of the condition number of the matrix A,
 *          computed as RCOND = 1/(norm(A) * norm(inv(A))).
 *
 *  WORK    (workspace) REAL array, dimension (4*N)
 *
 *  IWORK   (workspace) INTEGER array, dimension (N)
 *
 *  INFO    (output) INTEGER
 *          = 0:  successful exit
 *          < 0:  if INFO = -i, the i-th argument had an illegal value
 *
 *  =====================================================================
 *
 *     .. Parameters ..

Constructor Summary

SGECON()

Method Summary

static void

SGECON(java.lang.String norm, int n, float[][] a, float anorm, floatW rcond, float[] work, int[] iwork, intW info)

Methods inherited from class java.lang.Object

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

Constructor Detail

SGECON

public SGECON()

Method Detail

SGECON

public static void SGECON(java.lang.String norm,
                          int n,
                          float[][] a,
                          float anorm,
                          floatW rcond,
                          float[] work,
                          int[] iwork,
                          intW info)