Overview | Package | Class | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## org.netlib.lapack
Class Ssygst

    java.lang.Object
      org.netlib.lapack.Ssygst

    public class Ssygst

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
     *  =======
     *
     *  SSYGST reduces a real symmetric-definite generalized eigenproblem
     *  to standard form.
     *
     *  If ITYPE = 1, the problem is A*x = lambda*B*x,
     *  and A is overwritten by inv(U**T)*A*inv(U) or inv(L)*A*inv(L**T)
     *
     *  If ITYPE = 2 or 3, the problem is A*B*x = lambda*x or
     *  B*A*x = lambda*x, and A is overwritten by U*A*U**T or L**T*A*L.
     *
     *  B must have been previously factorized as U**T*U or L*L**T by SPOTRF.
     *
     *  Arguments
     *  =========
     *
     *  ITYPE   (input) INTEGER
     *          = 1: compute inv(U**T)*A*inv(U) or inv(L)*A*inv(L**T);
     *          = 2 or 3: compute U*A*U**T or L**T*A*L.
     *
     *  UPLO    (input) CHARACTER*1
     *          = 'U':  Upper triangle of A is stored and B is factored as
     *                  U**T*U;
     *          = 'L':  Lower triangle of A is stored and B is factored as
     *                  L*L**T.
     *
     *  N       (input) INTEGER
     *          The order of the matrices A and B.  N >= 0.
     *
     *  A       (input/output) REAL array, dimension (LDA,N)
     *          On entry, the symmetric matrix A.  If UPLO = 'U', the leading
     *          N-by-N upper triangular part of A contains the upper
     *          triangular part of the matrix A, and the strictly lower
     *          triangular part of A is not referenced.  If UPLO = 'L', the
     *          leading N-by-N lower triangular part of A contains the lower

     *          triangular part of the matrix A, and the strictly upper
     *          triangular part of A is not referenced.
     *
     *          On exit, if INFO = 0, the transformed matrix, stored in the
     *          same format as A.
     *
     *  LDA     (input) INTEGER
     *          The leading dimension of the array A.  LDA >= max(1,N).
     *
     *  B       (input) REAL array, dimension (LDB,N)
     *          The triangular factor from the Cholesky factorization of B,
     *          as returned by SPOTRF.
     *
     *  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
     *
     *  =====================================================================
     *
     *     .. Parameters ..

Constructor Summary
`Ssygst()`

Method Summary
`static void` | `ssygst(int itype, java.lang.String uplo, int n, float[] a, int _a_offset, int lda, 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

### Ssygst

    public Ssygst()

Method Detail

### ssygst

    public static void ssygst(int itype,
                              java.lang.String uplo,
                              int n,
                              float[] a,
                              int _a_offset,
                              int lda,
                              float[] b,
                              int _b_offset,
                              int ldb,
                              intW info)

Overview | Package | Class | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD