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Class org.netlib.lapack.Dgttrs

java.lang.Object
   |
   +----org.netlib.lapack.Dgttrs

public class Dgttrs

extends 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
 *  =======
 *
 *  DGTTRS 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 DGTTRF.
 *
 *  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.  N >= 0.
 *
 *  NRHS    (input) INTEGER
 *          The number of right hand sides, i.e., the number of columns
 *          of the matrix B.  NRHS >= 0.
 *
 *  DL      (input) DOUBLE PRECISION array, dimension (N-1)
 *          The (n-1) multipliers that define the matrix L from the
 *          LU factorization of A.
 *
 *  D       (input) DOUBLE PRECISION array, dimension (N)
 *          The n diagonal elements of the upper triangular matrix U from
 *          the LU factorization of A.
 *
 *  DU      (input) DOUBLE PRECISION array, dimension (N-1)
 *          The (n-1) elements of the first superdiagonal of U.
 *
 *  DU2     (input) DOUBLE PRECISION array, dimension (N-2)
 *          The (n-2) elements of the second superdiagonal 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) DOUBLE PRECISION array, dimension (LDB,NRHS)
 *          On entry, the right hand side matrix B.
 *          On exit, B is overwritten by 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 ..

Dgttrs()

dgttrs(String, int, int, double[], int, double[], int, double[], int, double[], int, int[], int, double[], int, int, intW)

 public Dgttrs()

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

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