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Class org.netlib.lapack.Dlasq4

java.lang.Object
   |
   +----org.netlib.lapack.Dlasq4

public class Dlasq4

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
 *     =======
 *
 *     DLASQ4 estimates TAU, the smallest eigenvalue of a matrix. This
 *     routine improves the input value of SUP which is an upper bound
 *     for the smallest eigenvalue for this matrix .
 *
 *     Arguments
 *     =========
 *
 *  N       (input) INTEGER
 *          On entry, N specifies the number of rows and columns
 *          in the matrix. N must be at least 0.
 *
 *  Q       (input) DOUBLE PRECISION array, dimension (N)
 *          Q array
 *
 *  E       (input) DOUBLE PRECISION array, dimension (N)
 *          E array
 *
 *  TAU     (output) DOUBLE PRECISION
 *          Estimate of the shift
 *
 *  SUP     (input/output) DOUBLE PRECISION
 *          Upper bound for the smallest singular value
 *
 *  =====================================================================
 *
 *     .. Parameters ..

Dlasq4()

dlasq4(int, double[], int, double[], int, doubleW, doubleW)

 public Dlasq4()

 public static void dlasq4(int n,
                           double q[],
                           int _q_offset,
                           double e[],
                           int _e_offset,
                           doubleW tau,
                           doubleW sup)

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