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## org.netlib.lapack
Class Ssbgst

    java.lang.Object
      org.netlib.lapack.Ssbgst

    public class Ssbgst

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
     *  =======
     *
     *  SSBGST reduces a real symmetric-definite banded generalized
     *  eigenproblem  A*x = lambda*B*x  to standard form  C*y = lambda*y,
     *  such that C has the same bandwidth as A.
     *
     *  B must have been previously factorized as S**T*S by SPBSTF, using a
     *  split Cholesky factorization. A is overwritten by C = X**T*A*X, where
     *  X = S**(-1)*Q and Q is an orthogonal matrix chosen to preserve the
     *  bandwidth of A.
     *
     *  Arguments
     *  =========
     *
     *  VECT    (input) CHARACTER*1
     *          = 'N':  do not form the transformation matrix X;
     *          = 'V':  form X.
     *
     *  UPLO    (input) CHARACTER*1
     *          = 'U':  Upper triangle of A is stored;
     *          = 'L':  Lower triangle of A is stored.
     *
     *  N       (input) INTEGER
     *          The order of the matrices A and B.  N >= 0.
     *
     *  KA      (input) INTEGER
     *          The number of superdiagonals of the matrix A if UPLO = 'U',
     *          or the number of subdiagonals if UPLO = 'L'.  KA >= 0.
     *
     *  KB      (input) INTEGER
     *          The number of superdiagonals of the matrix B if UPLO = 'U',
     *          or the number of subdiagonals if UPLO = 'L'.  KA >= KB >= 0.

     *
     *  AB      (input/output) REAL array, dimension (LDAB,N)
     *          On entry, the upper or lower triangle of the symmetric band
     *          matrix A, stored in the first ka+1 rows of the array.  The
     *          j-th column of A is stored in the j-th column of the array AB
     *          as follows:
     *          if UPLO = 'U', AB(ka+1+i-j,j) = A(i,j) for max(1,j-ka)<=i<=j;
     *          if UPLO = 'L', AB(1+i-j,j)    = A(i,j) for j<=i<=min(n,j+ka).
     *
     *          On exit, the transformed matrix X**T*A*X, stored in the same

     *          format as A.
     *
     *  LDAB    (input) INTEGER
     *          The leading dimension of the array AB.  LDAB >= KA+1.
     *
     *  BB      (input) REAL array, dimension (LDBB,N)
     *          The banded factor S from the split Cholesky factorization of

     *          B, as returned by SPBSTF, stored in the first KB+1 rows of
     *          the array.
     *
     *  LDBB    (input) INTEGER
     *          The leading dimension of the array BB.  LDBB >= KB+1.
     *
     *  X       (output) REAL array, dimension (LDX,N)
     *          If VECT = 'V', the n-by-n matrix X.
     *          If VECT = 'N', the array X is not referenced.
     *
     *  LDX     (input) INTEGER
     *          The leading dimension of the array X.
     *          LDX >= max(1,N) if VECT = 'V'; LDX >= 1 otherwise.
     *
     *  WORK    (workspace) REAL array, dimension (2*N)
     *
     *  INFO    (output) INTEGER
     *          = 0:  successful exit
     *          < 0:  if INFO = -i, the i-th argument had an illegal value.
     *
     *  =====================================================================
     *
     *     .. Parameters ..

Constructor Summary
`Ssbgst()`

Method Summary
`static void` | `ssbgst(java.lang.String vect, java.lang.String uplo, int n, int ka, int kb, float[] ab, int _ab_offset, int ldab, float[] bb, int _bb_offset, int ldbb, float[] x, int _x_offset, int ldx, float[] work, int _work_offset, intW info)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### Ssbgst

    public Ssbgst()

Method Detail

### ssbgst

    public static void ssbgst(java.lang.String vect,
                              java.lang.String uplo,
                              int n,
                              int ka,
                              int kb,
                              float[] ab,
                              int _ab_offset,
                              int ldab,
                              float[] bb,
                              int _bb_offset,
                              int ldbb,
                              float[] x,
                              int _x_offset,
                              int ldx,
                              float[] work,
                              int _work_offset,
                              intW info)

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