org.netlib.lapack
Class Ssycon

java.lang.Object
  extended by org.netlib.lapack.Ssycon

public class Ssycon
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 * ======= * * SSYCON estimates the reciprocal of the condition number (in the * 1-norm) of a real symmetric matrix A using the factorization * A = U*D*U**T or A = L*D*L**T computed by SSYTRF. * * An estimate is obtained for norm(inv(A)), and the reciprocal of the * condition number is computed as RCOND = 1 / (ANORM * norm(inv(A))). * * Arguments * ========= * * UPLO (input) CHARACTER*1 * Specifies whether the details of the factorization are stored * as an upper or lower triangular matrix. * = 'U': Upper triangular, form is A = U*D*U**T; * = 'L': Lower triangular, form is A = L*D*L**T. * * N (input) INTEGER * The order of the matrix A. N >= 0. * * A (input) REAL array, dimension (LDA,N) * The block diagonal matrix D and the multipliers used to * obtain the factor U or L as computed by SSYTRF. * * LDA (input) INTEGER * The leading dimension of the array A. LDA >= max(1,N). * * IPIV (input) INTEGER array, dimension (N) * Details of the interchanges and the block structure of D * as determined by SSYTRF. * * ANORM (input) REAL * The 1-norm of the original matrix A. * * RCOND (output) REAL * The reciprocal of the condition number of the matrix A, * computed as RCOND = 1/(ANORM * AINVNM), where AINVNM is an * estimate of the 1-norm of inv(A) computed in this routine. * * WORK (workspace) REAL array, dimension (2*N) * * IWORK (workspace) INTEGER array, dimension (N) * * INFO (output) INTEGER * = 0: successful exit * < 0: if INFO = -i, the i-th argument had an illegal value * * ===================================================================== * * .. Parameters ..


Constructor Summary
Ssycon()
           
 
Method Summary
static void ssycon(java.lang.String uplo, int n, float[] a, int _a_offset, int lda, int[] ipiv, int _ipiv_offset, float anorm, floatW rcond, float[] work, int _work_offset, int[] iwork, int _iwork_offset, intW info)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Ssycon

public Ssycon()
Method Detail

ssycon

public static void ssycon(java.lang.String uplo,
                          int n,
                          float[] a,
                          int _a_offset,
                          int lda,
                          int[] ipiv,
                          int _ipiv_offset,
                          float anorm,
                          floatW rcond,
                          float[] work,
                          int _work_offset,
                          int[] iwork,
                          int _iwork_offset,
                          intW info)