org.netlib.lapack
Class Spbtrs

java.lang.Object
  org.netlib.lapack.Spbtrs

public class Spbtrs
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
 *  =======
 *
 *  SPBTRS solves a system of linear equations A*X = B with a symmetric
 *  positive definite band matrix A using the Cholesky factorization
 *  A = U**T*U or A = L*L**T computed by SPBTRF.
 *
 *  Arguments
 *  =========
 *
 *  UPLO    (input) CHARACTER*1
 *          = 'U':  Upper triangular factor stored in AB;
 *          = 'L':  Lower triangular factor stored in AB.
 *
 *  N       (input) INTEGER
 *          The order of the matrix A.  N >= 0.
 *
 *  KD      (input) INTEGER
 *          The number of superdiagonals of the matrix A if UPLO = 'U',
 *          or the number of subdiagonals if UPLO = 'L'.  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 triangular factor U or L from the Cholesky factorization

 *          A = U**T*U or A = L*L**T of the band matrix A, stored in the

 *          first KD+1 rows of the array.  The j-th column of U or L is
 *          stored in the j-th column of the array AB as follows:
 *          if UPLO ='U', AB(kd+1+i-j,j) = U(i,j) for max(1,j-kd)<=i<=j;

 *          if UPLO ='L', AB(1+i-j,j)    = L(i,j) for j<=i<=min(n,j+kd).

 *
 *  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, 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
 *
 *  =====================================================================
 *
 *     .. Local Scalars ..

Constructor Summary

Spbtrs()

Method Summary

static void

spbtrs(java.lang.String uplo, 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

Spbtrs

public Spbtrs()

Method Detail

spbtrs

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