org.netlib.lapack
Class Sgttrs

java.lang.Object
  extended by org.netlib.lapack.Sgttrs

public class Sgttrs
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 * ======= * * SGTTRS solves one of the systems of equations * A*X = B or A'*X = B, * with a tridiagonal matrix A using the LU factorization computed * by SGTTRF. * * Arguments * ========= * * TRANS (input) CHARACTER * Specifies the form of the system of equations. * = 'N': A * X = B (No transpose) * = 'T': A'* X = B (Transpose) * = 'C': A'* X = B (Conjugate transpose = Transpose) * * N (input) INTEGER * The order of the matrix A. * * NRHS (input) INTEGER * The number of right hand sides, i.e., the number of columns * of the matrix B. NRHS >= 0. * * DL (input) REAL array, dimension (N-1) * The (n-1) multipliers that define the matrix L from the * LU factorization of A. * * D (input) REAL array, dimension (N) * The n diagonal elements of the upper triangular matrix U from * the LU factorization of A. * * DU (input) REAL array, dimension (N-1) * The (n-1) elements of the first super-diagonal of U. * * DU2 (input) REAL array, dimension (N-2) * The (n-2) elements of the second super-diagonal of U. * * IPIV (input) INTEGER array, dimension (N) * The pivot indices; for 1 <= i <= n, row i of the matrix was * interchanged with row IPIV(i). IPIV(i) will always be either * i or i+1; IPIV(i) = i indicates a row interchange was not * required. * * B (input/output) REAL array, dimension (LDB,NRHS) * On entry, the matrix of right hand side vectors B. * On exit, B is overwritten by the solution vectors X. * * LDB (input) INTEGER * The leading dimension of the array B. LDB >= max(1,N). * * INFO (output) INTEGER * = 0: successful exit * < 0: if INFO = -i, the i-th argument had an illegal value * * ===================================================================== * * .. Local Scalars ..


Constructor Summary
Sgttrs()
           
 
Method Summary
static void sgttrs(java.lang.String trans, int n, int nrhs, float[] dl, int _dl_offset, float[] d, int _d_offset, float[] du, int _du_offset, float[] du2, int _du2_offset, int[] ipiv, int _ipiv_offset, float[] b, int _b_offset, int ldb, intW info)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Sgttrs

public Sgttrs()
Method Detail

sgttrs

public static void sgttrs(java.lang.String trans,
                          int n,
                          int nrhs,
                          float[] dl,
                          int _dl_offset,
                          float[] d,
                          int _d_offset,
                          float[] du,
                          int _du_offset,
                          float[] du2,
                          int _du2_offset,
                          int[] ipiv,
                          int _ipiv_offset,
                          float[] b,
                          int _b_offset,
                          int ldb,
                          intW info)