org.netlib.lapack
Class Dpocon

java.lang.Object
  org.netlib.lapack.Dpocon

public class Dpocon
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
 *  =======
 *
 *  DPOCON estimates the reciprocal of the condition number (in the
 *  1-norm) of a real symmetric positive definite matrix using the
 *  Cholesky factorization A = U**T*U or A = L*L**T computed by DPOTRF.
 *
 *  An estimate is obtained for norm(inv(A)), and the reciprocal of the
 *  condition number is computed as RCOND = 1 / (ANORM * norm(inv(A))).
 *
 *  Arguments
 *  =========
 *
 *  UPLO    (input) CHARACTER*1
 *          = 'U':  Upper triangle of A is stored;
 *          = 'L':  Lower triangle of A is stored.
 *
 *  N       (input) INTEGER
 *          The order of the matrix A.  N >= 0.
 *
 *  A       (input) DOUBLE PRECISION array, dimension (LDA,N)
 *          The triangular factor U or L from the Cholesky factorization

 *          A = U**T*U or A = L*L**T, as computed by DPOTRF.
 *
 *  LDA     (input) INTEGER
 *          The leading dimension of the array A.  LDA >= max(1,N).
 *
 *  ANORM   (input) DOUBLE PRECISION
 *          The 1-norm (or infinity-norm) of the symmetric matrix A.
 *
 *  RCOND   (output) DOUBLE PRECISION
 *          The reciprocal of the condition number of the matrix A,
 *          computed as RCOND = 1/(ANORM * AINVNM), where AINVNM is an
 *          estimate of the 1-norm of inv(A) computed in this routine.
 *
 *  WORK    (workspace) DOUBLE PRECISION array, dimension (3*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

Dpocon()

Method Summary

static void

dpocon(java.lang.String uplo, int n, double[] a, int _a_offset, int lda, double anorm, doubleW rcond, double[] work, int _work_offset, int[] iwork, int _iwork_offset, intW info)

Methods inherited from class java.lang.Object

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

Constructor Detail

Dpocon

public Dpocon()

Method Detail

dpocon

public static void dpocon(java.lang.String uplo,
                          int n,
                          double[] a,
                          int _a_offset,
                          int lda,
                          double anorm,
                          doubleW rcond,
                          double[] work,
                          int _work_offset,
                          int[] iwork,
                          int _iwork_offset,
                          intW info)