Package gov.nih.mipav.model.structures.jama

Class SVD

  • All Implemented Interfaces:
    java.io.Serializable
    public class SVD
extends java.lang.Object
implements java.io.Serializable
    See Also:
    Serialized Form

    • Constructor Summary

      Constructors 
      Constructor Description
      SVD()  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      private void ddrvbd​(int nsizes, int[] mm, int[] nn, int ntypes, boolean[] dotype, int[] iseed, double thresh, double[][] A, int lda, double[][] U, int ldu, double[][] VT, int ldvt, double[][] ASAV, double[][] USAV, double[][] VTSAV, double[] s, double[] ssav, double[] e, double[] work, int lwork, int[] iwork, int[] info)  
      void ddrvbd_test()
      This routine is an extraction from the FORTRAN program version 3.4.1 DCHKEE of the code needed to drive ddrvbd in order to run ddrvbd in order to test the singular value decomposition driver dgesvd.
      private void derred()  
      void dgesvd​(char jobu, char jobvt, int m, int n, double[][] A, int lda, double[] s, double[][] U, int ldu, double[][] VT, int ldvt, double[] work, int lwork, int[] info)  
      private void dort03​(char rc, int mu, int mv, int n, int k, double[][] U, int ldu, double[][] V, int ldv, double[] work, int lwork, double[] result, int[] info)  
      void xlaenv​(int ispec, int nvalue)
      This is a port of version 3.1 LAPACK auxiliary routine XLAENV.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • SVD

        public SVD()

    • Method Detail

      • ddrvbd_test

        public void ddrvbd_test()
        This routine is an extraction from the FORTRAN program version 3.4.1 DCHKEE of the code needed to drive ddrvbd in order to run ddrvbd in order to test the singular value decomposition driver dgesvd. Numerical values were obtained from the svd.in datafile. Original DCHKEE created by Univ. of Tennessee, Univ. of California Berkeley, University of Colorado Denver, and NAG Ltd., April, 2012

      • derred

        private void derred()

      • ddrvbd

        private void ddrvbd​(int nsizes,
                    int[] mm,
                    int[] nn,
                    int ntypes,
                    boolean[] dotype,
                    int[] iseed,
                    double thresh,
                    double[][] A,
                    int lda,
                    double[][] U,
                    int ldu,
                    double[][] VT,
                    int ldvt,
                    double[][] ASAV,
                    double[][] USAV,
                    double[][] VTSAV,
                    double[] s,
                    double[] ssav,
                    double[] e,
                    double[] work,
                    int lwork,
                    int[] iwork,
                    int[] info)

      • dort03

        private void dort03​(char rc,
                    int mu,
                    int mv,
                    int n,
                    int k,
                    double[][] U,
                    int ldu,
                    double[][] V,
                    int ldv,
                    double[] work,
                    int lwork,
                    double[] result,
                    int[] info)

      • dgesvd

        public void dgesvd​(char jobu,
                   char jobvt,
                   int m,
                   int n,
                   double[][] A,
                   int lda,
                   double[] s,
                   double[][] U,
                   int ldu,
                   double[][] VT,
                   int ldvt,
                   double[] work,
                   int lwork,
                   int[] info)

      • xlaenv

        public void xlaenv​(int ispec,
                   int nvalue)
        This is a port of version 3.1 LAPACK auxiliary routine XLAENV. Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. November 2006 .. Scalar Arguments .. INTEGER ISPEC, NVALUE .. Purpose ======= XLAENV sets certain machine- and problem-dependent quantities which will later be retrieved by ILAENV. Arguments ========= ISPEC (input) INTEGER Specifies the parameter to be set in the COMMON array IPARMS. = 1: the optimal blocksize; if this value is 1, an unblocked algorithm will give the best performance. = 2: the minimum block size for which the block routine should be used; if the usable block size is less than this value, an unblocked routine should be used. = 3: the crossover point (in a block routine, for N less than this value, an unblocked routine should be used) = 4: the number of shifts, used in the nonsymmetric eigenvalue routines = 5: the minimum column dimension for blocking to be used; rectangular blocks must have dimension at least k by m, where k is given by ILAENV(2,...) and m by ILAENV(5,...) = 6: the crossover point for the SVD (when reducing an m by n matrix to bidiagonal form, if max(m,n)/min(m,n) exceeds this value, a QR factorization is used first to reduce the matrix to a triangular form) = 7: the number of processors = 8: another crossover point, for the multishift QR and QZ methods for nonsymmetric eigenvalue problems. = 9: maximum size of the subproblems at the bottom of the computation tree in the divide-and-conquer algorithm (used by xGELSD and xGESDD) =10: ieee NaN arithmetic can be trusted not to trap =11: infinity arithmetic can be trusted not to trap NVALUE (input) INTEGER The value of the parameter specified by ISPEC.