org.netlib.lapack
Class Stbtrs

java.lang.Object
  org.netlib.lapack.Stbtrs

public class Stbtrs
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
 *  =======
 *
 *  STBTRS solves a triangular system of the form
 *
 *     A * X = B  or  A**T * X = B,
 *
 *  where A is a triangular band matrix of order N, and B is an
 *  N-by NRHS matrix.  A check is made to verify that A is nonsingular.
 *
 *  Arguments
 *  =========
 *
 *  UPLO    (input) CHARACTER*1
 *          = 'U':  A is upper triangular;
 *          = 'L':  A is lower triangular.
 *
 *  TRANS   (input) CHARACTER*1
 *          Specifies the form the system of equations:
 *          = 'N':  A * X = B  (No transpose)
 *          = 'T':  A**T * X = B  (Transpose)
 *          = 'C':  A**H * X = B  (Conjugate transpose = Transpose)
 *
 *  DIAG    (input) CHARACTER*1
 *          = 'N':  A is non-unit triangular;
 *          = 'U':  A is unit triangular.
 *
 *  N       (input) INTEGER
 *          The order of the matrix A.  N >= 0.
 *
 *  KD      (input) INTEGER
 *          The number of superdiagonals or subdiagonals of the
 *          triangular band matrix A.  KD >= 0.
 *
 *  NRHS    (input) INTEGER
 *          The number of right hand sides, i.e., the number of columns
 *          of the matrix B.  NRHS >= 0.
 *
 *  AB      (input) REAL array, dimension (LDAB,N)
 *          The upper or lower triangular band matrix A, stored in the
 *          first kd+1 rows of AB.  The j-th column of A is stored
 *          in the j-th column of the array AB as follows:
 *          if UPLO = 'U', AB(kd+1+i-j,j) = A(i,j) for max(1,j-kd)<=i<=j;
 *          if UPLO = 'L', AB(1+i-j,j)    = A(i,j) for j<=i<=min(n,j+kd).
 *          If DIAG = 'U', the diagonal elements of A are not referenced

 *          and are assumed to be 1.
 *
 *  LDAB    (input) INTEGER
 *          The leading dimension of the array AB.  LDAB >= KD+1.
 *
 *  B       (input/output) REAL array, dimension (LDB,NRHS)
 *          On entry, the right hand side matrix B.
 *          On exit, if INFO = 0, 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
 *          > 0:  if INFO = i, the i-th diagonal element of A is zero,
 *                indicating that the matrix is singular and the
 *                solutions X have not been computed.
 *
 *  =====================================================================
 *
 *     .. Parameters ..

Constructor Summary

Stbtrs()

Method Summary

static void

stbtrs(java.lang.String uplo, java.lang.String trans, java.lang.String diag, int n, int kd, int nrhs, float[] ab, int _ab_offset, int ldab, 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

Stbtrs

public Stbtrs()

Method Detail

stbtrs

public static void stbtrs(java.lang.String uplo,
                          java.lang.String trans,
                          java.lang.String diag,
                          int n,
                          int kd,
                          int nrhs,
                          float[] ab,
                          int _ab_offset,
                          int ldab,
                          float[] b,
                          int _b_offset,
                          int ldb,
                          intW info)