org.netlib.lapack
Class Dptts2

java.lang.Object
  org.netlib.lapack.Dptts2

public class Dptts2
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
 *  =======
 *
 *  DPTTS2 solves a tridiagonal system of the form
 *     A * X = B
 *  using the L*D*L' factorization of A computed by DPTTRF.  D is a
 *  diagonal matrix specified in the vector D, L is a unit bidiagonal
 *  matrix whose subdiagonal is specified in the vector E, and X and B
 *  are N by NRHS matrices.
 *
 *  Arguments
 *  =========
 *
 *  N       (input) INTEGER
 *          The order of the tridiagonal matrix A.  N >= 0.
 *
 *  NRHS    (input) INTEGER
 *          The number of right hand sides, i.e., the number of columns
 *          of the matrix B.  NRHS >= 0.
 *
 *  D       (input) DOUBLE PRECISION array, dimension (N)
 *          The n diagonal elements of the diagonal matrix D from the
 *          L*D*L' factorization of A.
 *
 *  E       (input) DOUBLE PRECISION array, dimension (N-1)
 *          The (n-1) subdiagonal elements of the unit bidiagonal factor

 *          L from the L*D*L' factorization of A.  E can also be regarded
 *          as the superdiagonal of the unit bidiagonal factor U from the
 *          factorization A = U'*D*U.
 *
 *  B       (input/output) DOUBLE PRECISION array, dimension (LDB,NRHS)
 *          On entry, the right hand side vectors B for the system of
 *          linear equations.
 *          On exit, the solution vectors, X.
 *
 *  LDB     (input) INTEGER
 *          The leading dimension of the array B.  LDB >= max(1,N).
 *
 *  =====================================================================
 *
 *     .. Local Scalars ..

Constructor Summary

Dptts2()

Method Summary

static void

dptts2(int n, int nrhs, double[] d, int _d_offset, double[] e, int _e_offset, double[] b, int _b_offset, int ldb)

Methods inherited from class java.lang.Object

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

Constructor Detail

Dptts2

public Dptts2()

Method Detail

dptts2

public static void dptts2(int n,
                          int nrhs,
                          double[] d,
                          int _d_offset,
                          double[] e,
                          int _e_offset,
                          double[] b,
                          int _b_offset,
                          int ldb)