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Class org.netlib.lapack.DLASCL

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

public class DLASCL

extends Object

DLASCL is a simplified interface to the JLAPACK routine dlascl.
This interface converts Java-style 2D row-major arrays into
the 1D column-major linearized arrays expected by the lower
level JLAPACK routines.  Using this interface also allows you
to omit offset and leading dimension arguments.  However, because
of these conversions, these routines will be slower than the low
level ones.  Following is the description from the original Fortran
source.  Contact seymour@cs.utk.edu with any questions.

 *     ..
 *
 *  Purpose
 *  =======
 *
 *  DLASCL multiplies the M by N real matrix A by the real scalar
 *  CTO/CFROM.  This is done without over/underflow as long as the final
 *  result CTO*A(I,J)/CFROM does not over/underflow. TYPE specifies that
 *  A may be full, upper triangular, lower triangular, upper Hessenberg,
 *  or banded.
 *
 *  Arguments
 *  =========
 *
 *  TYPE    (input) CHARACTER*1
 *          TYPE indices the storage type of the input matrix.
 *          = 'G':  A is a full matrix.
 *          = 'L':  A is a lower triangular matrix.
 *          = 'U':  A is an upper triangular matrix.
 *          = 'H':  A is an upper Hessenberg matrix.
 *          = 'B':  A is a symmetric band matrix with lower bandwidth KL
 *                  and upper bandwidth KU and with the only the lower
 *                  half stored.
 *          = 'Q':  A is a symmetric band matrix with lower bandwidth KL
 *                  and upper bandwidth KU and with the only the upper
 *                  half stored.
 *          = 'Z':  A is a band matrix with lower bandwidth KL and upper
 *                  bandwidth KU.
 *
 *  KL      (input) INTEGER
 *          The lower bandwidth of A.  Referenced only if TYPE = 'B',
 *          'Q' or 'Z'.
 *
 *  KU      (input) INTEGER
 *          The upper bandwidth of A.  Referenced only if TYPE = 'B',
 *          'Q' or 'Z'.
 *
 *  CFROM   (input) DOUBLE PRECISION
 *  CTO     (input) DOUBLE PRECISION
 *          The matrix A is multiplied by CTO/CFROM. A(I,J) is computed
 *          without over/underflow if the final result CTO*A(I,J)/CFROM
 *          can be represented without over/underflow.  CFROM must be
 *          nonzero.
 *
 *  M       (input) INTEGER
 *          The number of rows of the matrix A.  M >= 0.
 *
 *  N       (input) INTEGER
 *          The number of columns of the matrix A.  N >= 0.
 *
 *  A       (input/output) DOUBLE PRECISION array, dimension (LDA,M)
 *          The matrix to be multiplied by CTO/CFROM.  See TYPE for the
 *          storage type.
 *
 *  LDA     (input) INTEGER
 *          The leading dimension of the array A.  LDA >= max(1,M).
 *
 *  INFO    (output) INTEGER
 *          0  - successful exit
 *          <0 - if INFO = -i, the i-th argument had an illegal value.
 *
 *  =====================================================================
 *
 *     .. Parameters ..

DLASCL()

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

 public DLASCL()

 public static void DLASCL(String type,
                           int kl,
                           int ku,
                           double cfrom,
                           double cto,
                           int m,
                           int n,
                           double a[][],
                           intW info)

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