org.netlib.lapack
Class Sptts2

java.lang.Object
  org.netlib.lapack.Sptts2

public class Sptts2
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
 *  =======
 *
 *  SPTTS2 solves a tridiagonal system of the form
 *     A * X = B
 *  using the L*D*L' factorization of A computed by SPTTRF.  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) REAL array, dimension (N)
 *          The n diagonal elements of the diagonal matrix D from the
 *          L*D*L' factorization of A.
 *
 *  E       (input) REAL 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) REAL 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

Sptts2()

Method Summary

static void

sptts2(int n, int nrhs, float[] d, int _d_offset, float[] e, int _e_offset, float[] 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

Sptts2

public Sptts2()

Method Detail

sptts2

public static void sptts2(int n,
                          int nrhs,
                          float[] d,
                          int _d_offset,
                          float[] e,
                          int _e_offset,
                          float[] b,
                          int _b_offset,
                          int ldb)