org.netlib.lapack
Class Dgbtrs

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

public class Dgbtrs
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 * ======= * * DGBTRS solves a system of linear equations * A * X = B or A' * X = B * with a general band matrix A using the LU factorization computed * by DGBTRF. * * Arguments * ========= * * TRANS (input) CHARACTER*1 * 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. N >= 0. * * KL (input) INTEGER * The number of subdiagonals within the band of A. KL >= 0. * * KU (input) INTEGER * The number of superdiagonals within the band of A. KU >= 0. * * NRHS (input) INTEGER * The number of right hand sides, i.e., the number of columns * of the matrix B. NRHS >= 0. * * AB (input) DOUBLE PRECISION array, dimension (LDAB,N) * Details of the LU factorization of the band matrix A, as * computed by DGBTRF. U is stored as an upper triangular band * matrix with KL+KU superdiagonals in rows 1 to KL+KU+1, and * the multipliers used during the factorization are stored in * rows KL+KU+2 to 2*KL+KU+1. * * LDAB (input) INTEGER * The leading dimension of the array AB. LDAB >= 2*KL+KU+1. * * IPIV (input) INTEGER array, dimension (N) * The pivot indices; for 1 <= i <= N, row i of the matrix was * interchanged with row IPIV(i). * * B (input/output) DOUBLE PRECISION array, dimension (LDB,NRHS) * On entry, the right hand side matrix B. * On exit, the solution matrix 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 * * ===================================================================== * * .. Parameters ..


Constructor Summary
Dgbtrs()
           
 
Method Summary
static void dgbtrs(java.lang.String trans, int n, int kl, int ku, int nrhs, double[] ab, int _ab_offset, int ldab, int[] ipiv, int _ipiv_offset, double[] 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

Dgbtrs

public Dgbtrs()
Method Detail

dgbtrs

public static void dgbtrs(java.lang.String trans,
                          int n,
                          int kl,
                          int ku,
                          int nrhs,
                          double[] ab,
                          int _ab_offset,
                          int ldab,
                          int[] ipiv,
                          int _ipiv_offset,
                          double[] b,
                          int _b_offset,
                          int ldb,
                          intW info)